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Volt modding an HD 7970

post #1 of 5
10/19/12 at 1:43pm
Thread Starter 
So i've got a reference model MSI 7970. In CCC (with the power slider pushed all the way to +20%) i can only push the card to about 1050mhz and the memory to 1425. It seems most people can just max o.c. these cards. I know heat isn't an issue because it's in a Switch 810 with like 11 140mm fans lol. So my question is what is the best program to use to volt mod, what is the stock voltage, how what increments should i move the voltage up to, and what is the max safe voltage for this card?
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post #2 of 5
1/5/13 at 7:47am
The only program that I know of that allows its user to infinitely (not really but apparently enough) increase the voltage delivered to a graphics card is the MSI Afterburner Extreme. However, as far as I know, this program can only be aquired if the person who wants to do so contacts his or her local MSI rep. This method is officially promoted by MSI, but it has not worked for a lot of people yet, as far as I know at least. MSI usually only gives the MSI Afterburner Extreme to people who overclock graphics cards professionally. I know that this advice that I gave you is not very helpful. I myself use four MSI Radeon HD 7970s (these graphics cards are almost identical to the graphics card that you mentioned, they only have a BIOS in which they are slightly overclocked). I watercool them with an Aquaduct 720 XT (which is a radiator that cools passively, and actively with six 140mm fans). I myself would like to deliver a higher voltage to my graphics cards as I can do with the MSI Afterburner since I am quite sure that I could overclock them more since they are cooled well enough, but unfortunately MSI would probably not give the MSI Afterburner Extreme to me if I asked them for it.
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post #3 of 5
1/12/13 at 3:22pm
Thread Starter 
Appreciate the help. I'm using Afterburner 2.2 right now. The core clock is at 1075mhz and memory is at 1450. The core clock voltage is at 1100mv right now. The memory voltage is at 1650mv. I had to up the core clock voltage from 1080mv to avoid artifacts while playing Far Cry 3. Is that safe with the stock cooler? The avg. temps are around 86 celsius but never went over 90. I did download the new driver that supposedly improves Far Cry 3 performance but i didn't notice a difference. Thanks for your help man.
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post #4 of 5
1/15/13 at 5:15pm
I'd say anything under 90 is safe. New drivers really only reduce the FPS hit you take when applying any AA in FC3. I over-volt with TriXX but since you don't have a Sapphire card it might not work well for you. It tops about at 1381mV anyway. Sorry to hear about your bad luck with overclocking, mine is hardly any better =/

I believe stock volts for your card is 1.1v. I definitely wouldn't go over 1.3. If your card doesn't immediately fry itself at 1.3, it will eventually melt itself.
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(14 items)
  		  
CPUMotherboardGraphicsRAM
i5 3570K (4.5Ghz @ 1.2v) ASRock Z77 Extreme4 MSI R7970 TF 3GD5/OC 8GB G. Skill Ripjaws @1600Mhz 
Hard DriveHard DriveCoolingCooling
Samsung 840 Pro 256GB WD Caviar Blue 320GB Cooler Master Hyper 212 EVO 6 Xigmatek case fans 
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Windows 8 Pro 64bit Acer S231HL Corsair TX 850W Cooler Master Elite 430 
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JBL Creature III Linksys WMP600N Wireless Card 
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Gaming PC
(14 items)
  		  
CPUMotherboardGraphicsRAM
i5 3570K (4.5Ghz @ 1.2v) ASRock Z77 Extreme4 MSI R7970 TF 3GD5/OC 8GB G. Skill Ripjaws @1600Mhz 
Hard DriveHard DriveCoolingCooling
Samsung 840 Pro 256GB WD Caviar Blue 320GB Cooler Master Hyper 212 EVO 6 Xigmatek case fans 
OSMonitorPowerCase
Windows 8 Pro 64bit Acer S231HL Corsair TX 850W Cooler Master Elite 430 
AudioOther
JBL Creature III Linksys WMP600N Wireless Card 
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  hide details  
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post #5 of 5
1/15/13 at 11:45pm
Thread Starter 
Thanks for the advice Hollywood. I thought 1100mv was pushing it but people seem to be maxing out their cards (over 1300mv). I'm assuming this is on aftermarket cooling though.
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