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overclocking my 7870 hawk

post #1 of 4
Thread Starter 
Just been having a play with the clock speeds of my hawk. stock is 1100 core and 1200 ram.

With the power control in ccc set to 20% the max i can get my core to is 1170 without the display drivers stopping responding while stressing with occt.

The ram however will max out ccc which is about 1450 i believe.

Does with sound about normal for a hawk? Most reviews i read say the ram will get to about 1350 and then need a voltage bump and the core should hit 1200 no problem
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post #2 of 4
Quote:
Originally Posted by sonicmat View Post

Just been having a play with the clock speeds of my hawk. stock is 1100 core and 1200 ram.
With the power control in ccc set to 20% the max i can get my core to is 1170 without the display drivers stopping responding while stressing with occt.
The ram however will max out ccc which is about 1450 i believe.
Does with sound about normal for a hawk? Most reviews i read say the ram will get to about 1350 and then need a voltage bump and the core should hit 1200 no problem

overclocking results will differ from chip tp chip. If you want to go for higher speeds go for voltage increase with sapphire trixx or msi afterburner . normally with voltage tweaking you should hit 1200+ Mhz speeds. also while overclocking core and VRM temps are very important. make sure you keep core temps below 70c and VRM temps below 90c. set fan speed manually or using custom fan profiles in trixx or ab. MSI Hawk fan does not have the best acoustics. so try and strike a balance between fan speed and noise, GPU voltage, GPU clocks and GPU temps. good luck thumb.gif
Edited by raghu78 - 9/19/12 at 3:58am
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post #3 of 4
Thread Starter 
cool, thanks mate.

what about the memory chips, is it pretty standard that they should hit 1400 without a problem?
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post #4 of 4
Quote:
Originally Posted by sonicmat View Post

cool, thanks mate.
what about the memory chips, is it pretty standard that they should hit 1400 without a problem?

1450 Mhz memory OC is good. I would advice you to first find the max core clocks with voltage tweaking and then try and push memory further in small increments and keep testing for game stability.

Also OCCT, Furmark are not good for stability testing. Try with real world apps like Heaven, 3D Mark 11, BF3, Crysis 2. If you keep temps lower you improve your chances of hitting higher core speeds.
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