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Safe 7970 VRAM voltage?

post #1 of 5
Thread Starter 
Mine can hit 2000 mhz but im pretty sure its not stable at 1.65v (stock 1.6), how far can I push VRAM voltage.

Reference 7970 MSI with Heatkiller 79x0 waterblock, 40 degrees under load, 1250 mhz GPU.
post #2 of 5
Thread Starter 
anyone?
post #3 of 5
I was wondering this as well. The stock voltage on mine is 1.5v, that's interesting that 1.6v is stock for you (that makes me feel better that I probably don't need to worry about the 1.6 range then). I honestly can't find much information on this subject if higher than 1.65 is reasonable or not.
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post #4 of 5
Quote:
Originally Posted by Klinkey View Post

Mine can hit 2000 mhz but im pretty sure its not stable at 1.65v (stock 1.6), how far can I push VRAM voltage.

Reference 7970 MSI with Heatkiller 79x0 waterblock, 40 degrees under load, 1250 mhz GPU.

1.65 is safe 24/7. The chips are usually specified for 1.6V +-0.05V.
You can go up to 1.7-1.75 and see where this gets you.

Test your O/C with something which uses a lot of video ram.

My Sapphire is stable @ 2000-2050MHz @ 1.63V in 3D Mark 2011, but will not pass the Firestorm test in 3D Mark 2013 at anything above 1850 MHz.
post #5 of 5
Quote:
Originally Posted by glina View Post

1.65 is safe 24/7. The chips are usually specified for 1.6V +-0.05V.
You can go up to 1.7-1.75 and see where this gets you.

Test your O/C with something which uses a lot of video ram.

My Sapphire is stable @ 2000-2050MHz @ 1.63V in 3D Mark 2011, but will not pass the Firestorm test in 3D Mark 2013 at anything above 1850 MHz.

Thanks, that's good info!
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Hard DriveOptical DriveOSPower
Intel 520 SSD 240GB Bluray / DVD combo Win 7 Home 64 Seasonic 550W modular 
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NZXT Vulcan 
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Athlon 64 FX-55 Clawhammer Or Athlon 64 X2 4200+ Manchester Asus A8N32 - SLI ATI Radeon X850 XT PE 
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Or MSI GeForce 210 4 x 1GB Corsair XMS 500MHz OCz Agility 2 LITE-ON DVD 
CoolingOSPowerCase
Antec Kuhler 920 Win 7 Home Premium OEM Antec High Current Pro NZXT Phantom 
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