Are my OC speeds good, bad or average

Rabmac · Apr 9, 2016

Hi,

I currently have a Sapphire Radeon HD 7870 2GB OC edition, which I have recently overclocked. I don't have any specialist cooling, only the stock cooler on GPU and a 120mm fan blowing full pelt onto the GPU.

After testing for a few hours I think I have got it as high as I can get it without changing the voltage (which I think is locked) and keeping it stable & without artifacts.

Before OC here were the stats of the GPU:

Core Clock - 1000MHz
Memory Clock - 1200MHz
Temp @ load - 51oC

Stats after OC:

Core Clock: 1180MHz
Memory Clock: 1400MHz
Temp @ load: 63.5oC

Was wondering if the OC stats are good, bad or average? Should I be trying to OC further?

Enderegg · Apr 9, 2016

The voltage isn't locked most likely, you gotto change the setting that enables the slider (in afterburner at least). With no extra voltage I'd say +180MHz on clock and 200MHz on memory is pretty decent.

Rabmac · Apr 9, 2016

Thanks

With regards changing voltage, I am using MSI Afterburner and went into settings and selected "Unlock Voltage Control" but I am still unable to adjust the slider, that is why I thought it may be locked.

Enderegg · Apr 9, 2016

But it seems that way. Some cards are locked and there is no way to unlock it. Maybe if you install a new firmware, but that's risky. It may brick the card, and for the performance gain it won't be worth for the most part

Rabmac · Apr 9, 2016

I read somewhere that I may be able to adjust the voltage if I use Sapphires own version of Afterburner but have not tried it yet. May give it a try tomorrow if I get the chance.

Rabmac · Apr 10, 2016

Have just tried with Trixx but there was no option to adjust the voltage, so it looks like that is the end of my OCing with this card.

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Are my OC speeds good, bad or average

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