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Overclocking a 7970 voltages?????? - Page 2

post #11 of 15
The voltage is a bit high. You should be able to do 1125Mhz with stock voltage. For me with stock Air Cooler i could not really go more then 1.2v / 1150MHz because of heat problem. Under Water i am @ 1.2GHz @ 1.25v keeping in mind my HD 7970s are not very good overclokers to begin with.
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Ishimura
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post #12 of 15
Thread Starter 
Well under the advise of some on this thread i have been playing around with my oc........so far i got to 1155/1480 with 1.25v and +20 power limit and my temps have not really change maybe a degree here or there cant really tell.....mind u im using BF3 as a heat tester i did run 3Dmark and got the best score yet....of course

temps hovering 65-70 degrees
 
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post #13 of 15
good. try 1175 mhz and then 1200 mhz on the core. memory can be OC'ed later after you find max stable core overclocks. also stress testing should involve atleast 30min of a game session like BF3 or Crysis 3 so that you can see if the ambient temps in the case build up and affect OC stability. for VRM temps use HWinfo32 or msi afterbuner. make sure VRM temps are below 90c and core temps below 70c. if required set up a custom fan profile to keep temps in safe range. try to achieve a balance of core clocks, temps, heat and fan noise.
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post #14 of 15
Thread Starter 
where on msi afterburner do i find it i tried could not find anything??/
 
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post #15 of 15
What is the supposed range for stock voltage on any 7970? I just got one and it says the stock is at 1025 on AB. Most people say the stock is above 1100 but I don't have a highly overclocked version or anything, just a Sapphire non GHz edition.

Looks like the 1.2 range is pretty standard but that would be a pretty large jump. Just curious
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