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Problems overclocking 7870 Hawk

post #1 of 4
Thread Starter 
I got my 7870 Hawk a few days ago and im trying to overclock. Now i see where alot of people get 1200 on the core with stock volts of 1.218, but i can only get 1170 on 1.250mv with temps only reaching 60c. I'm using bf3 to test because kombuster is saying those higher clocks were ok, but in game it would crash. I'm not worried about overclocking the memory, just the core. And ideas?
post #2 of 4
Max slide the voltage option in AB,and slowly ascending the clock by +5 each step until you get crash during benching.I assume that you have unlock the voltage control in the AB option.Aslo max out the fan speed during benching and max slide the power target as well.

Since it is all about silicon lottery,you may get lower clock or higher clock compare to other.
post #3 of 4
Quote:
Originally Posted by ConfederateJoe View Post

I got my 7870 Hawk a few days ago and im trying to overclock. Now i see where alot of people get 1200 on the core with stock volts of 1.218, but i can only get 1170 on 1.250mv with temps only reaching 60c. I'm using bf3 to test because kombuster is saying those higher clocks were ok, but in game it would crash. I'm not worried about overclocking the memory, just the core. And ideas?

what are the VRM temps ? use GPU-Z or HWinfo32 to monitor both the GPU core and GPU VRM temps. hwinfo32 also allows to log temps to a file. just start it off before running a benchmark or game. analyse temps once the runs are over. its safer if VRM temps are below 90c and core temps below 70c. if this is achieved you can go for small voltage increment to 1.275v and see how far you can go. even if you achieve 1250 Mhz at 1.275v thats very good. good luck. but finally it depends on whether you got a chip which overclocks well. some chips won't cross 1200 Mhz no matter how much voltage you give.
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(14 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core i5 2400 DH67BL AMD Radeon HD 6900 Series XFX HD 6950 2GB 
RAMRAMHard DriveOptical Drive
Corsair Corsair DDR3 1333 Mhz 2 GB Corsair DDR3 1333 Mhz 2 GB Western Digital Caviar Green SONY DVD-RW AD-7260S 
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Windows 7 Professional 32 bit BENQ G2420HD Logitech K200 Seasonic VX550 psu 
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ANTEC 200 V2 Logitech mouse 
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post #4 of 4
Thread Starter 
Quote:
Originally Posted by raghu78 View Post

what are the VRM temps ? use GPU-Z or HWinfo32 to monitor both the GPU core and GPU VRM temps. hwinfo32 also allows to log temps to a file. just start it off before running a benchmark or game. analyse temps once the runs are over. its safer if VRM temps are below 90c and core temps below 70c. if this is achieved you can go for small voltage increment to 1.275v and see how far you can go. even if you achieve 1250 Mhz at 1.275v thats very good. good luck. but finally it depends on whether you got a chip which overclocks well. some chips won't cross 1200 Mhz no matter how much voltage you give.

Yeah I'm monitoring vrm and memory temps in afterburner, they will only get up to around 50-55. How much voltage can i push through this hawk?
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