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  Topic Review (Newest First)
06-28-2019 07:41 AM
christoph
Quote: Originally Posted by hawker-gb View Post
Strange because R5 2400g works well on same Windows (igpu)
And it happen on two different PCs on win10.

What is solution in case of Windows?

there's a lot you can try, look in google about windows Black screens, and you'll find a lot
06-27-2019 11:55 PM
hawker-gb
Quote: Originally Posted by christoph View Post
is not the video card, is windows, lots of people are experiencing black screens
Strange because R5 2400g works well on same Windows (igpu)
And it happen on two different PCs on win10.

What is solution in case of Windows?
06-27-2019 10:10 PM
christoph
Quote: Originally Posted by hawker-gb View Post
Hello guys and girls

i have Sapphire R9 390 Nitro without backplate.
Suddenly and randomly my monitor blacks out and pc needs hard reset.
I suspect on GPU and did following:

-Use it in another pc and screen,same effect
-clean and replace thermal paste,same
-Change cables,try DP and HDMI,same effect
-There is no overheating,just randomly blacks out

Can i try anything else or its dead?
is not the video card, is windows, lots of people are experiencing black screens
06-27-2019 06:45 AM
hawker-gb Hello guys and girls

i have Sapphire R9 390 Nitro without backplate.
Suddenly and randomly my monitor blacks out and pc needs hard reset.
I suspect on GPU and did following:

-Use it in another pc and screen,same effect
-clean and replace thermal paste,same
-Change cables,try DP and HDMI,same effect
-There is no overheating,just randomly blacks out

Can i try anything else or its dead?
03-21-2019 07:13 PM
tolis626
Quote: Originally Posted by mynm View Post
Yes, maybe is a waste of time, but I have already wasted the time finding out how to do the mvddc mod, and I want to know if it is working. I bought a 380 ,before the 590 I have now, instead of a 290 a little bit more expensive, maybe a bad choice, and I have started doing bios modding to my 380 reading the hawaii bios mod thread, so is some thing I want to test, if I found a cheap 390.
Well then, I hope you do get to buy one! These are really great cards to push. I mean, treat them correctly and they can take some punishment. They are just... Old at this point. But I guess it's fine for tinkering, especially if you won't really mind that much if the card dies. Cheers!
03-21-2019 07:26 AM
mynm
Quote: Originally Posted by tolis626 View Post
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.

Yes, maybe is a waste of time, but I have already wasted the time finding out how to do the mvddc mod, and I want to know if it is working. I bought a 380 ,before the 590 I have now, instead of a 290 a little bit more expensive, maybe a bad choice, and I have started doing bios modding to my 380 reading the hawaii bios mod thread, so is some thing I want to test, if I found a cheap 390.
03-20-2019 06:23 PM
tolis626
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.
03-20-2019 03:34 PM
mynm
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.
03-20-2019 01:40 PM
tolis626
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.
03-20-2019 04:55 AM
mynm
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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