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[Official] AMD R9 390/390X Owners Club - Page 376

post #3751 of 11905
Quote:
Originally Posted by gupsterg View Post

AUX Voltage = VDDCI , which AFAIK is the I/O bus voltage (between memory and GPU core), not the 8x IMC in the die.

Core Voltage = VDDC , which is the GPU core voltage and I think this also feeds the 8x IMC in the die.

Memory Voltage (MVDD) AFAIK only the 290 series MSI Lightning and Asus Matrix cards have, as they have an extra chip controlling it. Where as the standard voltage control chip (IR3567) on its own doesn't support software RAM voltage adjustment AFAIK.


Ah okay. Very helpful thank you so much. So if I am not mistaken I would think increasing the Aux voltage would help overclocking abilities especially the memory clock. Is there any concern for safety of the card when increasing it?
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post #3752 of 11905
Personally I wouldn't go over 1.05V ie +50mv in MSI AB, seen Sapphire 390/X roms have this.

The info I got from the Stilt states never to go over 1.10v ie +100mv in MSI AB.

MSI AB doesn't allow more, unless there is a command line switch that can be added to shortcut properties to increase it, just like the limit on GPU core voltage can be raised.

Other OC apps I don't know about as don't use them.

Recently an owner in the 290/X owners thread posted it helped attain better OCs on a poor clocking card, with myself I found it had no effect on my card's OC ability. SO I'm guessing depends case by case.
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The Stilt Machine
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XPS - i5 4690K
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Hard DriveCoolingCoolingCooling
Samsung Evo 840 ThermalRight Archon IB-E X2 + 2x TY143 ThermalRight TY-143 2x front case intake Arctic Cooling F12 + 2x F9 as rear case exhaust 
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Win 7 Pro x64 / Win 10 Pro x64 Asus MG279Q Cherry MX-Board 3.0 Cooler Master V850 
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SilverStone TJ06 Logitech G700S 
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post #3753 of 11905
greetings to all you overcllocker overlords, one of your humble peasants call for your aid.

Okay, jokes aside, i need your help. I'm planning to get my hands on an r9 390, and i'm wondering about three things. First of all, which of the cards are better for stock config clocking? I know the MSI one dominates in therms of hard overclocking, but i suspect there's a lot of voltage clocking involved there. I've broken one gpu on that, and don't want to risk it. So, which model will be the best?

And secondly, i've noticed that the sapphire version consumes as much as 370w of power in STOCK config? That's a huge difference from the MSI one who according to my sources use 275w.

Thidly, what increase in voltages can i expect to see from a stock configuration overclock?

I'd love to hear some answers. And i am aware they will be general, due to our old pal "silicone lottery", so don't worry about that.

Thanks in advance.
post #3754 of 11905
Quote:
Originally Posted by dartmaul15 View Post

greetings to all you overcllocker overlords, one of your humble peasants call for your aid.

Okay, jokes aside, i need your help. I'm planning to get my hands on an r9 390, and i'm wondering about three things. First of all, which of the cards are better for stock config clocking? I know the MSI one dominates in therms of hard overclocking, but i suspect there's a lot of voltage clocking involved there. I've broken one gpu on that, and don't want to risk it. So, which model will be the best?

And secondly, i've noticed that the sapphire version consumes as much as 370w of power in STOCK config? That's a huge difference from the MSI one who according to my sources use 275w.

Thidly, what increase in voltages can i expect to see from a stock configuration overclock?

I'd love to hear some answers. And i am aware they will be general, due to our old pal "silicone lottery", so don't worry about that.

Thanks in advance.

Well, there's no way the Sapphire consumes 370W at stock. I doubt the card can pull that much sustained wattage at all, even when overclocked. You'd need a beefier PCB for that kind of stuff. Now you might see spikes of power usage sometimes that go really high, but those are momentary and you shouldn't pay attention. I'd think all 390 cards will consume roughly the same amount of power, seeing as the core is unchanged. When variations in voltage and clocks are taken into account, of course.

Regarding overclocking at stock volts... Don't even factor that into your decision. It's 100% random. Some say the MSI cards tend to overclock better, but I'd say no. It's random as always, as is overclocking in general. You can expect something in the 1100-1150MHz range at stock volts, most cards do something like that.

Also, what do you mean about seeing an increase in voltages from a stock configuration overclock? The way I understand it is you want to know how far you can push your overvolt/overclock at with stock cooling? If so, the Sapphire cards arguably have the best cooler. Throw +100mV at it (The max Afterburner allows) and it's still ok. The MSI cooler is really good too, but MSI seems to have screwed up with their TIM application, so be aware of that, especially if, like me, you don't like tinkering with your shiny new card. XFX and Powercolor are fine choices too. I would just stay away from Gigabyte for the 300 series. That cooler of theirs seems awful and they're voltage locked, so... Yeah.
post #3755 of 11905
So , I pulled the trigger. I've purchased Two Alphacool nexxxos GPX blocks for my Msi Gaming 8gb 390x crossfire setup. Im doin' it! It's gonna take a while to get the stuff shipped from germany im sure, but I will be sure to report my findings! Can't wait. I didnt intend to watercool when i was planning my new system, and i ended up with cards there are no full blocks for. I have been watching this thread and scouring the internet for waterblocks to no avail. Even if this turns out badly, at least we can all learn from it. Regardless of the outcome, it will make for some GREAT information in the guide.
post #3756 of 11905
Quote:
Originally Posted by kubiks View Post

So , I pulled the trigger. I've purchased Two Alphacool nexxxos GPX blocks for my Msi Gaming 8gb 390x crossfire setup. Im doin' it! It's gonna take a while to get the stuff shipped from germany im sure, but I will be sure to report my findings! Can't wait. I didnt intend to watercool when i was planning my new system, and i ended up with cards there are no full blocks for. I have been watching this thread and scouring the internet for waterblocks to no avail. Even if this turns out badly, at least we can all learn from it. Regardless of the outcome, it will make for some GREAT information in the guide.

modmymods has them in stock though....
post #3757 of 11905
No R9 380 thread, just picked up two for $180 each and am crossfiring them after having a 660 TI for the past year (my cat spilled my fiance's coffee on computer and ruined a bunch of my parts, i had 2x 660 ti)

Arriving today, can't wait to post up some benchmarks.

Edit : rest of computer

i5-4690k
16 gb ddr3 ram
asus a97
500 gb SSD

I went the crossfire route due to my tremendous success with 2x 660 TI, and I won't be going past 1440p gaming. (probably won't upgrade monitor for a few months from 1080p-->1440p)
Edited by Josh81 - 11/1/15 at 1:16am
post #3758 of 11905
Quote:
Originally Posted by 6speed View Post

I've been saving up to get the MSI R9 390 hopefully here soon, pre Fallout 4 preferably. I didn't really think it would be an issue but after checking some PSU calc's some say my PSU might not be enough. I have a Corsair TX650, does anyone think this could be an issue? It does have 2x PCI 8-pin connectors so i'm good there, and my sig is up to date. Thanks in advance for any help.

I had the same psu for my FX8350 rig with an r9 290 and now I'm using a HX650w, It should be just fine.
post #3759 of 11905
Quote:
Originally Posted by kubiks View Post

So , I pulled the trigger. I've purchased Two Alphacool nexxxos GPX blocks for my Msi Gaming 8gb 390x crossfire setup. Im doin' it! It's gonna take a while to get the stuff shipped from germany im sure, but I will be sure to report my findings! Can't wait. I didnt intend to watercool when i was planning my new system, and i ended up with cards there are no full blocks for. I have been watching this thread and scouring the internet for waterblocks to no avail. Even if this turns out badly, at least we can all learn from it. Regardless of the outcome, it will make for some GREAT information in the guide.

Are you sure those blocks will fit the custom pcb desing of the MSI R9 390X? Its about a cm ( +- half inch) wider than the standard r9 290x pcb and the layout is very different. My kryographics r9 290x waterblock did not fit the MSI card. an i had to go for the XFX card.( with original pcb design) I'm glad I did though, so far I had it run 3D mark at 1225/1750 without any artifacts.

Just a warning, unless you know something I don't tongue.gif
post #3760 of 11905
Quote:
Just a warning, unless you know something I don't tongue.gif


They have a specification list probably he checked that
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