Caporegime
Gigabyte 7870
On stock volts it will do 1140 / 1500 (stable) it will play anything for hours at that every time, at 1150 / 1500 it may or may not play anything for x amount of time.
The Memory makes no difference to that core speed overclockability on stock volts, 1515 is as high as i can get it without artifacting.
Overvolting is where it gets dicey.
At 1175 core i need 1262mv, anything less than that voltage and either the driver will simply crash, or it will BSOD, or Buzz loud through the speakers and then BSOD
At 1200 core i need 1281mv, that's already high, and even that i only use for benching as when that goes, as it sometimes does, it absolutely will buzz and crash.
Anything higher than that and i have no chance.
I'm really unimpressed with its overclocking, but then overclocking is a lottery, i knew that before i bought it.
What worries me is the fact that it is SO BAD for overclocking, and the very dramatic way it complains when it does not like the overclock.
It seems a great GPU, it performs as well as any 7870, perhaps even a little better than some others i have seen.
At stock volts or anything less than 1270mv its solid, faultless, never had even a hint of a glitch with it.
But i am a little concerned there is something underlying, something fundamentally flawed with it, something that could crop up when it gets a little older.
What do you think?
On stock volts it will do 1140 / 1500 (stable) it will play anything for hours at that every time, at 1150 / 1500 it may or may not play anything for x amount of time.
The Memory makes no difference to that core speed overclockability on stock volts, 1515 is as high as i can get it without artifacting.
Overvolting is where it gets dicey.
At 1175 core i need 1262mv, anything less than that voltage and either the driver will simply crash, or it will BSOD, or Buzz loud through the speakers and then BSOD
At 1200 core i need 1281mv, that's already high, and even that i only use for benching as when that goes, as it sometimes does, it absolutely will buzz and crash.
Anything higher than that and i have no chance.
I'm really unimpressed with its overclocking, but then overclocking is a lottery, i knew that before i bought it.
What worries me is the fact that it is SO BAD for overclocking, and the very dramatic way it complains when it does not like the overclock.
It seems a great GPU, it performs as well as any 7870, perhaps even a little better than some others i have seen.
At stock volts or anything less than 1270mv its solid, faultless, never had even a hint of a glitch with it.
But i am a little concerned there is something underlying, something fundamentally flawed with it, something that could crop up when it gets a little older.
What do you think?
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