Geforce 670 overclocking results

[dizzyorange]

I've come to the conclusion that when overclocking my 670, only the power target and memory clock settings are relevant. The card just raises the core clock until it hits the power target regardless of what the core clock offset is set to.

Benchmarks results are the same regardless of whether the core clock offset is 0 or +120. Boosting the power target and memory clocks (+420) both increase benchmark performance, so I do believe that PrecisionX and Frost Bench are working correctly.

Anyone else experience this?

 

[tviceman]

This sounds about right. Some people may get a slightly different experience, but since the GPU will clock the core as high as it will go within the TDP, increasing the power target may be usually all you need for core overclocking. Nice memory overclock, btw!

 

[dizzyorange]

OK I was just confused because reviews seemed to emphasize how high they could get the core clock offset to.

Thanks I was pretty happy with the memory overclock, makes up for a mediocre core overclock (max boost 1200), seems like others are getting near 1250.

 

[xp0c]

I've come to the conclusion that when overclocking my 670, only the power target and memory clock settings are relevant. The card just raises the core clock until it hits the power target regardless of what the core clock offset is set to.

Benchmarks results are the same regardless of whether the core clock offset is 0 or +120. Boosting the power target and memory clocks (+420) both increase benchmark performance, so I do believe that PrecisionX and Frost Bench are working correctly.

Anyone else experience this?

That's how you find your stock boost.
You find your max overclock by adding the offset to your stock boost.
Not all cards are the same speed at stock settings so the offset will be different from a card with a core clock of 915mhz, and one with 1006mhz

 

[ViRGE]

It's a bit more complex than that. Every Kepler card has a max boost clock, at which point it's not factory qualified to run at a higher clockspeed regardless of what the power target is. To push beyond that you need a GPU offset. But you're right in that without adjusting the power target the GPU offset alone isn't of much value, and even when combined the GPU offset doesn't do a great deal much unless your card is particularly good.