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post #12051 of 12066 (permalink) Old 02-25-2019, 06:57 AM
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Quote: Originally Posted by christoph View Post
I think it does not apply for the R9 video cards
That's what I thought too. But if so, why are we allowed to change it? With that said, changing it from the stock 1109mV down to 1050mV or up to 1200mV didn't seem to do anything, so it may just be there doing nothing. I was under the assumption that memory voltage is locked in these cards.
Quote: Originally Posted by BradleyW View Post
Try increasing it a tiny bit and check voltage in gpuz to see if the memory voltage has indeed changed. If there's no change, it'll either be locked or your in fact changing the cards minimum floor voltage like on the Vega.
There's the thing. There's no memory voltage sensor for the 390x. At first I thought it would change the auxiliary voltage, but that's not it (plus, the 1109mV stock value would be insane for that, it's exactly 1V stock). Also, as said above, changing it to 1050mV or 1200mV didn't seem to do anything for stability, so I guess it's just a placeholder. My memory still can't overclock worth s**t, so there's that. I was just curious.

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post #12052 of 12066 (permalink) Old 03-01-2019, 07:00 PM
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Quote: Originally Posted by tolis626 View Post
That's what I thought too. But if so, why are we allowed to change it? With that said, changing it from the stock 1109mV down to 1050mV or up to 1200mV didn't seem to do anything, so it may just be there doing nothing. I was under the assumption that memory voltage is locked in these cards.

There's the thing. There's no memory voltage sensor for the 390x. At first I thought it would change the auxiliary voltage, but that's not it (plus, the 1109mV stock value would be insane for that, it's exactly 1V stock). Also, as said above, changing it to 1050mV or 1200mV didn't seem to do anything for stability, so I guess it's just a placeholder. My memory still can't overclock worth s**t, so there's that. I was just curious.

yeah well, I can change the AUX voltage or VDDCI voltage in GPU-Z but can't OC the Vram much

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post #12053 of 12066 (permalink) Old 03-02-2019, 02:51 AM
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Quote: Originally Posted by tolis626 View Post
So, in case anyone sees this...

I sent the monitor in for RMA. There was no dead pixel, but rather dirt in the panel. They changed my panel instead of giving me a new monitor, which I'm kind of salty about, but we'll see, I don't have it in my hands yet. Bad thing is, the service guy told me that he could not reproduce the problem with the DP connection, so they said I should either try with another GPU or contact the manufacturer of my GPU. So I sent an email to MSI support and I'm waiting for the "screw you" response I'm expecting. The way this whole thing looks, I'll probably have to buy another GPU if I'm to enjoy this damn thing, provided it doesn't give me even more problems. Worst thing is that I don't wanna go NVidia and, apart from the rather expensive Radeon VII, there's nothing REALLY better than the 390x on the AMD side. I mean, +5-10% at best isn't reason enough for me to go 580 or 590. I was really hoping for Navi, but I doubt I'm gonna be able to wait 'til the summer for it. Unless money (or lack thereof) forces me to wait and not buy a VII. Sigh...

PS : Got a response from MSI. First message gave me some general crap about reinstalling drivers and cleaning ports on the card. After I explained that I've tried everything, the guy sent me a shady looking BIOS flashing folder, complete with ATIWinflash and some other stuff that I don't know anything about. I'd appreciate if anyone gave a look.
Hi, do you have tested to not use freesync, maybe your monitor going to black problem is caused by it. About the BIOS flashing folder the bios is the TV308MH.201 file.

Quote: Originally Posted by tolis626 View Post
Sorry to bother everyone again, but I was messing around with Wattman and I saw that there is an option to increase the memory voltage? Is that actually working or is it just a placeholder than does nothing?
Quote: Originally Posted by christoph View Post
I think it does not apply for the R9 video cards
Quote: Originally Posted by BradleyW View Post
Try increasing it a tiny bit and check voltage in gpuz to see if the memory voltage has indeed changed. If there's no change, it'll either be locked or your in fact changing the cards minimum floor voltage like on the Vega.
In 380, and polaris gpus, the wattman memory voltage is not the memory voltage and is the voltage floor for the core for per dpm memory clock. Maybe in the 390 is the same. In vega @gupsterg have tested that it is the dpm5 voltage.

About the memory voltage (mvddc), I think I know a way to know what voltage is using you gpu for it. I see info about it in two bios tables, ASIC_Init and VoltageObjectInfo tables. The ones I see into the TV308MH.201 bios file are:

ASIC_Init:
91 00 01 01 00 08 02 01 02 00 52 47 52 02 02 65 02 07 52 0D 55 00 02 52 0D 52 23 2C 25 02 01 3D 25 02 06 45 17 00 51 02 4A 25 6F 22 06 49 3E 00 01 05 00 C2 00 00 00 E0 5C 25 70 22 F9 04 52 39 02 0D 02 01 03 52 43 66 04 02 8C 02 2E 00 02 0D 02 01 00 52 43 02 05 02 04 00 E8 03 52 43 02 0D 02 06 03 52 43 02 0D 02 02 03 52 43 52 05 02 01 02 00 0E E5 02 08 52 0A 02 05 02 02 00 DC 05 52 43 02 01 02 01 0E E5 02 08 52 0B 0D 65 D0 05 02 5B

VoltageObjectInfo:
70 00 03 01 01 03 0E 00 08 96 60 00 00 00 00 00 FF 00 01 07 0C 00 0A 00 00 00 00 00 00 00 04 07 0C 00 0E 00 00 00 00 00 00 00 02 00 24 00 00 04 00 00 00 80 10 00 00 00 00 00 1E 05 00 80 00 00 46 05 00 00 10 00 DC 05 00 80 10 00 0E 06 06 03 22 00 0C 96 A6 00 00 00 00 00 D4 00 F0 00 D5 00 F0 00 D6 00 F0 00 D7 00 F0 00 D3 00 40 00 FF 00

In the first table DC 05 is 1500 so is 1.5v, so your gpu could be using 1.5v. I saw 390x bioses with 1.55v to this value so maybe that is why you are getting errors and other people not.

In the second table there are other voltage values related to the memory voltage. 1E 05 1.31v, 4605 1.35v, DC05 1.5v and 0E 06 1.55v. I think these voltages are the ones the memory can have. I think no other voltage can by aplied.

So I think that if you change the first table DC 05 (1.5v) value to 0E 06 (1.55v) you could have 1.55v for the memory.

As mvddc can't be monitored by any software there is no way to know if it is working without a multimeter, or testing and see if you get less erros. Anybody have tested this, so if you whant to do this do it in your own risk.
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post #12054 of 12066 (permalink) Old 03-15-2019, 05:47 PM
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Quote: Originally Posted by christoph View Post
yeah well, I can change the AUX voltage or VDDCI voltage in GPU-Z but can't OC the Vram much
Well, it definitely helps on my card. It's just that it won't overclock the memory much even if I go balls to the wall with the voltages. Oh well, outside benchmarks, I haven't seen any big gains from memory overclocking.
Quote: Originally Posted by mynm View Post
Hi, do you have tested to not use freesync, maybe your monitor going to black problem is caused by it. About the BIOS flashing folder the bios is the TV308MH.201 file.
Testing without Freesync was the first thing I tried. It makes no difference. Turns out it's directly related to my GPU voltage. If I go above +25mV in Afterburner (Above my stock 1.275V VID), it will start going black when it first transitions from 2D to 3D clocks. Sometimes it will come back, sometimes it won't. The higher I go, the worse the problem becomes. But if I limit the GPU to 1140MHz and +25mV it doesn't happen much, if at all. Weird, but hey, I'm missing like 10-20MHz from my previous 24/7 overclock.

Quote: Originally Posted by mynm View Post
In 380, and polaris gpus, the wattman memory voltage is not the memory voltage and is the voltage floor for the core for per dpm memory clock. Maybe in the 390 is the same. In vega @gupsterg have tested that it is the dpm5 voltage.

About the memory voltage (mvddc), I think I know a way to know what voltage is using you gpu for it. I see info about it in two bios tables, ASIC_Init and VoltageObjectInfo tables. The ones I see into the TV308MH.201 bios file are:

ASIC_Init:
91 00 01 01 00 08 02 01 02 00 52 47 52 02 02 65 02 07 52 0D 55 00 02 52 0D 52 23 2C 25 02 01 3D 25 02 06 45 17 00 51 02 4A 25 6F 22 06 49 3E 00 01 05 00 C2 00 00 00 E0 5C 25 70 22 F9 04 52 39 02 0D 02 01 03 52 43 66 04 02 8C 02 2E 00 02 0D 02 01 00 52 43 02 05 02 04 00 E8 03 52 43 02 0D 02 06 03 52 43 02 0D 02 02 03 52 43 52 05 02 01 02 00 0E E5 02 08 52 0A 02 05 02 02 00 DC 05 52 43 02 01 02 01 0E E5 02 08 52 0B 0D 65 D0 05 02 5B

VoltageObjectInfo:
70 00 03 01 01 03 0E 00 08 96 60 00 00 00 00 00 FF 00 01 07 0C 00 0A 00 00 00 00 00 00 00 04 07 0C 00 0E 00 00 00 00 00 00 00 02 00 24 00 00 04 00 00 00 80 10 00 00 00 00 00 1E 05 00 80 00 00 46 05 00 00 10 00 DC 05 00 80 10 00 0E 06 06 03 22 00 0C 96 A6 00 00 00 00 00 D4 00 F0 00 D5 00 F0 00 D6 00 F0 00 D7 00 F0 00 D3 00 40 00 FF 00

In the first table DC 05 is 1500 so is 1.5v, so your gpu could be using 1.5v. I saw 390x bioses with 1.55v to this value so maybe that is why you are getting errors and other people not.

In the second table there are other voltage values related to the memory voltage. 1E 05 1.31v, 4605 1.35v, DC05 1.5v and 0E 06 1.55v. I think these voltages are the ones the memory can have. I think no other voltage can by aplied.

So I think that if you change the first table DC 05 (1.5v) value to 0E 06 (1.55v) you could have 1.55v for the memory.

As mvddc can't be monitored by any software there is no way to know if it is working without a multimeter, or testing and see if you get less erros. Anybody have tested this, so if you whant to do this do it in your own risk.
Well, I really don't understand much about that Wattman memory voltage to be honest.

Doesn't seem to be doing much with the 390x though.

Regarding the different MVDDC values, that may actually be the culprit. Bad thing is, I have no idea about BIOS modding, especially "advanced" stuff like using Hex editors and such. I'd love to try going higher though. With that said, right now I can't afford this GPU dying on me, so I'd be pretty reluctant, but if I get another GPU, I could definitely see myself giving this a go for fun. The 390x has served me long and well, but it may have one last trick up its sleeve it seems.

Phanteks Enthoo Primo, Asus Maximus VII Formula, MSI R9 390x, Intel Core i7 4790k @ 4.8GHz cooled by a Corsair H110. Corsair Vengeance Pro 16gb @ 2400MHz CL10 1.6V, EVGA SuperNova 1300G2, Samsung 840 Evo 500GB
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post #12055 of 12066 (permalink) Old 03-16-2019, 03:56 AM
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Quote: Originally Posted by tolis626 View Post

Testing without Freesync was the first thing I tried. It makes no difference. Turns out it's directly related to my GPU voltage. If I go above +25mV in Afterburner (Above my stock 1.275V VID), it will start going black when it first transitions from 2D to 3D clocks. Sometimes it will come back, sometimes it won't. The higher I go, the worse the problem becomes. But if I limit the GPU to 1140MHz and +25mV it doesn't happen much, if at all. Weird, but hey, I'm missing like 10-20MHz from my previous 24/7 overclock.


Well, I really don't understand much about that Wattman memory voltage to be honest.

Doesn't seem to be doing much with the 390x though.

Regarding the different MVDDC values, that may actually be the culprit. Bad thing is, I have no idea about BIOS modding, especially "advanced" stuff like using Hex editors and such. I'd love to try going higher though. With that said, right now I can't afford this GPU dying on me, so I'd be pretty reluctant, but if I get another GPU, I could definitely see myself giving this a go for fun. The 390x has served me long and well, but it may have one last trick up its sleeve it seems.

Ok, weird, I have no idea of what can be causing the problem.




About the wattman memory voltage, if ti is working fot the 390 I don't have a 390 to test, maybe like BradleyW said, it could helpto solve your problem. Because as it is a lower limit to to the core voltage for a memory clock, it can help in transitions from 2D to 3D.


I did some test in the past with the wattman memory voltage for my 380 (now is broken, but not for testing this), and the weird thing about it is that with memory timings mod it can be lowered and not cause any problem. But without it lowering it can cause black screens. Also I have tested to lower it to my new 590, but I get black screens.


I don't know how to do a proper timing mod, I don't have these tecnical skills. But this is the mod I did for my 380 with H5GC4H24AJR memorys (some 390 have the same memoryes, so it coul work for them), for 1500 and 1625 strap, and was working ok with low wattman memory voltages. :


77713320000000006BBD572F40550F0E2892F7060048C50022 559D084C0D14205A8900A000000120100C20246F1E2912


And the values for it that I get with this Vento041 tool are:

Spoiler!



The stock timings for the 1500 strap are:



7771332000000000CE516A3D9055111230964909004AE60022 339D08740114206A8900A002003120150F292F94273116



And the values for if are:
Spoiler!



Maybe somebody with timings mod skills could test this and say why these timings can help to lower the wattman memory voltage.


As memory timings mod can cause the gpu to brick, is not recomende to do this if you don't have a dual bios gpu or advanced bios flashing skills.



As your 390 performance is excellent nowadays, don't put it in risk.
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post #12056 of 12066 (permalink) Old 03-18-2019, 08:00 AM
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Quote: Originally Posted by mynm View Post
Ok, weird, I have no idea of what can be causing the problem.
Well, I did search around the web when it turned out that my screen was ok and the GPU was causing the problem. The most plausible theory I found was a guy on the AMD forums (I think) that was saying that the DP output of this card is fed by the 0.95V rail and when pushing the core voltage you may get some voltage drop on that rail and cause instability in the display output. That would actually make a lot of sense, considering that the core is the major power hog on these cards. AUX voltage doesn't seem to affect it, or at least not as much. Or it could be BS and I wouldn't know the difference, I dunno. What sucks is that I had to dial my OC down, even if slightly, now that the card needs every last drop of performance it can muster. I could realistically run 1180/1625MHz while on 1080p 60Hz, but now that I use 1440p 144Hz I'm stuck at 1140/1575MHz. Wouldn't make a huge difference, but meh. Oh well...

And, by the way, I got myself a third DP cable. This time, it's a KabelDirekt DP 1.4 cable, so 8K certified and whatever, 5 star reviews all around Amazon.de. Still, same issue. The only thing that changed (but I can't pin it down to the cable change) is that now, when it loses signal it will stay black until I either turn the screen off and on again, or if I switch inputs and go back to DP. That's a minor inconvenience, though, so...

Quote: Originally Posted by mynm View Post
About the wattman memory voltage, if ti is working fot the 390 I don't have a 390 to test, maybe like BradleyW said, it could helpto solve your problem. Because as it is a lower limit to to the core voltage for a memory clock, it can help in transitions from 2D to 3D.


I did some test in the past with the wattman memory voltage for my 380 (now is broken, but not for testing this), and the weird thing about it is that with memory timings mod it can be lowered and not cause any problem. But without it lowering it can cause black screens. Also I have tested to lower it to my new 590, but I get black screens.


I don't know how to do a proper timing mod, I don't have these tecnical skills. But this is the mod I did for my 380 with H5GC4H24AJR memorys (some 390 have the same memoryes, so it coul work for them), for 1500 and 1625 strap, and was working ok with low wattman memory voltages. :


77713320000000006BBD572F40550F0E2892F7060048C50022 559D084C0D14205A8900A000000120100C20246F1E2912


And the values for it that I get with this Vento041 tool are:

Spoiler!



The stock timings for the 1500 strap are:



7771332000000000CE516A3D9055111230964909004AE60022 339D08740114206A8900A002003120150F292F94273116



And the values for if are:
Spoiler!



Maybe somebody with timings mod skills could test this and say why these timings can help to lower the wattman memory voltage.


As memory timings mod can cause the gpu to brick, is not recomende to do this if you don't have a dual bios gpu or advanced bios flashing skills.



As your 390 performance is excellent nowadays, don't put it in risk.
So let me get this straight. That "memory voltage" is actually how soon the GPU will ramp up depending on the voltage? So, if I'm overclocking, lower would actually be better? I'm a bit confused, sorry.

Well, I wouldn't call the 390x's performance excellent in 2019. It's on par with cards like the 580 and 1060 but can't overclock well and consume, like, all the power. I've seen my card do north of 340W, easy. That was overclocked balls to the wall, but still, damn. So yeah, I would love to see some more squeezed out of my card until I can get a new one, but it not having dual BIOS and me not having experience with BIOS modding kind of kills it for me.

Thanks for your input though bro! Much appreciated!

PS : Decreasing the memory voltage in Wattman seems to help a bit with my issue. I tried decreasing it from the stock 1109mV to 1000mV and I don't get black screens quite as much. I can run my 1160/1600MHz overclock at +55mV (about 1.24V actual voltage) and I barely get any black screens now. I may get one when initially starting a game, but that's it, it won't go off and on constantly like it used to at the same otherwise settings. Or it may be something else that's helping, but so far it seems to be working, so I'm ok with it. Glad to be able to squeeze these last few MHz out of this poor card.

Phanteks Enthoo Primo, Asus Maximus VII Formula, MSI R9 390x, Intel Core i7 4790k @ 4.8GHz cooled by a Corsair H110. Corsair Vengeance Pro 16gb @ 2400MHz CL10 1.6V, EVGA SuperNova 1300G2, Samsung 840 Evo 500GB

Last edited by tolis626; 03-19-2019 at 09:44 AM.
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post #12057 of 12066 (permalink) Old 03-20-2019, 03:55 AM
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Quote: Originally Posted by tolis626 View Post
Well, I did search around the web when it turned out that my screen was ok and the GPU was causing the problem. The most plausible theory I found was a guy on the AMD forums (I think) that was saying that the DP output of this card is fed by the 0.95V rail and when pushing the core voltage you may get some voltage drop on that rail and cause instability in the display output. That would actually make a lot of sense, considering that the core is the major power hog on these cards. AUX voltage doesn't seem to affect it, or at least not as much. Or it could be BS and I wouldn't know the difference, I dunno. What sucks is that I had to dial my OC down, even if slightly, now that the card needs every last drop of performance it can muster. I could realistically run 1180/1625MHz while on 1080p 60Hz, but now that I use 1440p 144Hz I'm stuck at 1140/1575MHz. Wouldn't make a huge difference, but meh. Oh well...

And, by the way, I got myself a third DP cable. This time, it's a KabelDirekt DP 1.4 cable, so 8K certified and whatever, 5 star reviews all around Amazon.de. Still, same issue. The only thing that changed (but I can't pin it down to the cable change) is that now, when it loses signal it will stay black until I either turn the screen off and on again, or if I switch inputs and go back to DP. That's a minor inconvenience, though, so...


So let me get this straight. That "memory voltage" is actually how soon the GPU will ramp up depending on the voltage? So, if I'm overclocking, lower would actually be better? I'm a bit confused, sorry.

Well, I wouldn't call the 390x's performance excellent in 2019. It's on par with cards like the 580 and 1060 but can't overclock well and consume, like, all the power. I've seen my card do north of 340W, easy. That was overclocked balls to the wall, but still, damn. So yeah, I would love to see some more squeezed out of my card until I can get a new one, but it not having dual BIOS and me not having experience with BIOS modding kind of kills it for me.

Thanks for your input though bro! Much appreciated!

PS : Decreasing the memory voltage in Wattman seems to help a bit with my issue. I tried decreasing it from the stock 1109mV to 1000mV and I don't get black screens quite as much. I can run my 1160/1600MHz overclock at +55mV (about 1.24V actual voltage) and I barely get any black screens now. I may get one when initially starting a game, but that's it, it won't go off and on constantly like it used to at the same otherwise settings. Or it may be something else that's helping, but so far it seems to be working, so I'm ok with it. Glad to be able to squeeze these last few MHz out of this poor card.

You are welcome . Nice to know that decreasing the wattman memory voltage is helping with the problem. So what is the voltage you see for memory voltage?. In hawaii gpus afaik, the core voltage is linked to the memory mhz. For example for these attached image of a 390 bios, the lower voltage for 1500mhz memory clock is the dpm3 voltage. So for these gpu wattman memory voltage I think it could be dpm3 voltage.


Maybe your gpu is power throttling and lowering wattman voltage the voltage could be going lower and help wit the 0.95V, but I don't know, I don't how is working 0.95V and DP.


About the 390 performance, I have a 590, it is near the 390. So a 2015 with near the same performance is nice. And I will be using it for years. I have a bad sample gpu, so it needs like 1.244v for 1545 mhz with is around a 212w power consumption, that is arond the stock power consumption of the 390, so it is not low aswell.
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post #12058 of 12066 (permalink) Old 03-20-2019, 12:40 PM
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Quote: Originally Posted by mynm View Post
You are welcome . Nice to know that decreasing the wattman memory voltage is helping with the problem. So what is the voltage you see for memory voltage?. In hawaii gpus afaik, the core voltage is linked to the memory mhz. For example for these attached image of a 390 bios, the lower voltage for 1500mhz memory clock is the dpm3 voltage. So for these gpu wattman memory voltage I think it could be dpm3 voltage.


Maybe your gpu is power throttling and lowering wattman voltage the voltage could be going lower and help wit the 0.95V, but I don't know, I don't how is working 0.95V and DP.


About the 390 performance, I have a 590, it is near the 390. So a 2015 with near the same performance is nice. And I will be using it for years. I have a bad sample gpu, so it needs like 1.244v for 1545 mhz with is around a 212w power consumption, that is arond the stock power consumption of the 390, so it is not low aswell.
In Hawaii GPUs the core voltage is directly tied to memory overclocking as far as I know too, so I think you're correct. I could never really overclock the memory reliably without added voltage. And to get over 1650MHz bench stable (game stable is no no on my poorly overclocking card) I had to crank the voltage up quite a bit. My highest bench clocks have been 1225MHz core and 1750MHz memory IIRC, but that was at +125mV using an Afterburner script (and +50mV aux voltage). I tried to game on that just for giggles, but it crashed withink 10 minutes. The temps weren't even THAT bad, it barely touched 80C with the fans at 100% and the side panel off, it hovered mostly around 77C on the core and 80C on the VRMs IIRC. Clocking the memory down to 1700MHz allowed me to play for a bit, but it crashed again after throwing millions of errors first. With memory at 1650Mhz it was ok. I guess if I had my rig under water, I could use these frequencies no problem, probably at lower volts too. But boy would I have to bypass some power limits first... The MSI Gaming 390x is great, but not having dual BIOS kills me a little bit on the inside. I don't want my first attemp at BIOS modding to be without a backup BIOS.

Regarding my issue, I really have no idea what's going on. But hey, as long as it works with a bit more performance on tap, I'm happy!

Well, 212W for the 390x is peanuts. Typical board power for these cards is 230W, so adding 50% we're sitting at 345W. I've ran out of power budget A LOT with this card, so yeah... With that said, if you don't push them, they can be quite efficient! I can get 1080MHz (so stock) with some stupid undervolt of like -50mV or -75mV. Like that, the card sips power like a British lady does tea. I think it barely topped 150W.

Phanteks Enthoo Primo, Asus Maximus VII Formula, MSI R9 390x, Intel Core i7 4790k @ 4.8GHz cooled by a Corsair H110. Corsair Vengeance Pro 16gb @ 2400MHz CL10 1.6V, EVGA SuperNova 1300G2, Samsung 840 Evo 500GB
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post #12059 of 12066 (permalink) Old 03-20-2019, 02:34 PM
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Quote: Originally Posted by tolis626 View Post
In Hawaii GPUs the core voltage is directly tied to memory overclocking as far as I know too, so I think you're correct. I could never really overclock the memory reliably without added voltage. And to get over 1650MHz bench stable (game stable is no no on my poorly overclocking card) I had to crank the voltage up quite a bit. My highest bench clocks have been 1225MHz core and 1750MHz memory IIRC, but that was at +125mV using an Afterburner script (and +50mV aux voltage). I tried to game on that just for giggles, but it crashed withink 10 minutes. The temps weren't even THAT bad, it barely touched 80C with the fans at 100% and the side panel off, it hovered mostly around 77C on the core and 80C on the VRMs IIRC. Clocking the memory down to 1700MHz allowed me to play for a bit, but it crashed again after throwing millions of errors first. With memory at 1650Mhz it was ok. I guess if I had my rig under water, I could use these frequencies no problem, probably at lower volts too. But boy would I have to bypass some power limits first... The MSI Gaming 390x is great, but not having dual BIOS kills me a little bit on the inside. I don't want my first attemp at BIOS modding to be without a backup BIOS.

Regarding my issue, I really have no idea what's going on. But hey, as long as it works with a bit more performance on tap, I'm happy!

Well, 212W for the 390x is peanuts. Typical board power for these cards is 230W, so adding 50% we're sitting at 345W. I've ran out of power budget A LOT with this card, so yeah... With that said, if you don't push them, they can be quite efficient! I can get 1080MHz (so stock) with some stupid undervolt of like -50mV or -75mV. Like that, the card sips power like a British lady does tea. I think it barely topped 150W.

I have to buy one dual bios 390 some day , to test the bios mods for it, specially the mvddc voltage one.



About the 212w it was with 1.238v, with 1.244v is 216w but while gaming. I don't have tested it with benchmarks, but I suppose it can go to 230w or more aswell, and the core is at 80º with 2050 rpm, it don't have vrm temp monitoring. 1545mhz is the stock boost clock with 1.212v, but it is not stable if you add + 30% power limit from 178w stock tdp. I was expecting some thing better. It seems reviewes are using high quallity samples.
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post #12060 of 12066 (permalink) Old 03-20-2019, 05:23 PM
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Quote: Originally Posted by mynm View Post
I have to buy one dual bios 390 some day , to test the bios mods for it, specially the mvddc voltage one.



About the 212w it was with 1.238v, with 1.244v is 216w but while gaming. I don't have tested it with benchmarks, but I suppose it can go to 230w or more aswell, and the core is at 80º with 2050 rpm, it don't have vrm temp monitoring. 1545mhz is the stock boost clock with 1.212v, but it is not stable if you add + 30% power limit from 178w stock tdp. I was expecting some thing better. It seems reviewes are using high quallity samples.
Meh, don't waste your time. These cards were terrific back in the day, but now you get midrange performance at best, with the power consumption, thermals and noise of an OC top of the line card. Funny for experiments if you can, like, maybe find one cheap and preferably water cool it, but that's about it. I have to commend AMD for how well this card has aged, though. I remember it's competition was really Kepler. I don't see anyone even mentioning 700 series cards from NVidia anymore... Seems I made the right choice back then.

Phanteks Enthoo Primo, Asus Maximus VII Formula, MSI R9 390x, Intel Core i7 4790k @ 4.8GHz cooled by a Corsair H110. Corsair Vengeance Pro 16gb @ 2400MHz CL10 1.6V, EVGA SuperNova 1300G2, Samsung 840 Evo 500GB
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