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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 75

post #741 of 38704
Quote:
Originally Posted by omega17 View Post

I did it just for lolz with one card, for comparison purposes. Bumping the core to 1125 yields a 5FPS increase.
499

Umm.. I've just been doing some quick tests to help out with a system monitoring tool (AIDA64) regarding memory clocks on the 7970, and noticed something rather odd.

My 7970 is evolving, it's getting better eh-smiley.gif
Compare this to the one above. Absolutely no changes made whatsoever.

499
post #742 of 38704
Anyone know if the card has error checking/correction on the memory like the 6000 series?

Running the Crysis benchmark, i get more performance every time i bump the memory but when i go over 1480 my min fps starts to go down while everything else goes up. This happend on my last card too, Any ideas why this is?
post #743 of 38704
Quote:
Originally Posted by CallsignVega View Post

In Battlefield 3 Karkand last night 64-player server using my Sony FW900@1920x1200 with two 7970's@1225/1600 with the game set at max everything I reached a maximum of 2870MB VRAM! I almost am maxing out the VRAM with that resolution.
So yes, there is a reason for 6GB cards and I look forward to them for my Eyefinity setup. With the regular 3GB 7970's on my Eyefinity, I can only run "medium" settings in BF3 as it is going over the VRAM limit any higher.

Damn nice system you have there CallsignVega! thumb.gif
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post #744 of 38704
I'm trying to justify why I would need two of these I been reading reviews like this one but I see great scaling only on 3Dmark 11 and BF3. I wish I saw more on other games.
 
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post #745 of 38704
hey guys, getting some strange behavior, while overclocoking the gpu, it will do 1170 with stock volts, im using crysis 2 to check stability, seems to be the most stressful game, using dx11 and high res texture pack. If i use stock volts im stable at 1170 core and 1725 memory, but if i raise the voltage to 1.3 it crashes, even at the same frequency, if anyone else has crysis 2 installed please check your OC, might not be as stable as you think. I was stable in EVERY game except for crysis 2. IM using MSI after burner.

im also using eyefininty 5760 x 1080 resolution
post #746 of 38704
Quote:
Originally Posted by HeliXpc View Post

hey guys, getting some strange behavior, while overclocoking the gpu, it will do 1170 with stock volts, im using crysis 2 to check stability, seems to be the most stressful game, using dx11 and high res texture pack. If i use stock volts im stable at 1170 core and 1725 memory, but if i raise the voltage to 1.3 it crashes, even at the same frequency, if anyone else has crysis 2 installed please check your OC, might not be as stable as you think. I was stable in EVERY game except for crysis 2. IM using MSI after burner.
im also using eyefininty 5760 x 1080 resolution

Happening to quite a few people. Thought to maybe raise the VRM temps a bit too much with lots of extra voltage, causing errors.

Try get the card cooler and check again.
post #747 of 38704
Thread Starter 
Quote:
Originally Posted by Focus182 View Post

Quote:
Originally Posted by HeliXpc View Post

hey guys, getting some strange behavior, while overclocoking the gpu, it will do 1170 with stock volts, im using crysis 2 to check stability, seems to be the most stressful game, using dx11 and high res texture pack. If i use stock volts im stable at 1170 core and 1725 memory, but if i raise the voltage to 1.3 it crashes, even at the same frequency, if anyone else has crysis 2 installed please check your OC, might not be as stable as you think. I was stable in EVERY game except for crysis 2. IM using MSI after burner.
im also using eyefininty 5760 x 1080 resolution

Happening to quite a few people. Thought to maybe raise the VRM temps a bit too much with lots of extra voltage, causing errors.

Try get the card cooler and check again.
It's not the VRM temps to blame...
Honestly, 1070 MHz is the universal sweetspot for stability.
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post #748 of 38704
I'm having all types of problems now..

i can use 1.180 as my voltage but 1.187 causes errors in OCCT. Cant believe others can get 1.3v and i can't even get 1.187.

black screened the first time i went to 1.187, sigh...
post #749 of 38704
Thread Starter 
Quote:
Originally Posted by Focus182 View Post

I'm having all types of problems now..

i can use 1.180 as my voltage but 1.187 causes errors in OCCT. Cant believe others can get 1.3v and i can't even get 1.187.

black screened the first time i went to 1.187, sigh...
What clock?
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post #750 of 38704
Quote:
Originally Posted by Evil Penguin View Post

What clock?

1150 on the core
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