780 ti interesting find

[Tír na nÓg]

So, I have this 780 ti, running@1490/7900/1.15v, Geforce 347.xx drivers.

Get a 18800'ish graphic score in 3dm11.
http://www.3dmark.com/3dm11/11346057

Today, I did a bit of trail and error with different drivers, mainly with the 368.39.

The card would not go above 1390MHz: WTF?!? Lost 100MHz OC?!?

So, I ran 3dm11, and... 18700'ish graphic score!
http://www.3dmark.com/3dm11/11369254

Either the readings are wrong with either the previous drivers or the ne ones, or they improved by 7%, which I highly doubt.

All drivers from 330.xx to 355.xx give me the same 1490MHz, while the 365.xx and up give me the same perf, with a 100MHz less.

Have any of you experienced this kind of weird stuff already?

 

[ATMINSIDE]

Pretty typical for drivers to impact overclocking and performance.

 

[Tír na nÓg]

Sure it does, but I think it is more a matter of reading the right frequency than improving performance or impacting overclocking:
+7% performance increase, together with a loss of 7% overclocking headroom, on an old gen EOL GPU? At the same voltage? Mmm..Seems odd!

 

[EarthDog]

Im guessing its something left over in your driver trials causing the anomoly. Drivers do improve performance at the same clocks, but to see 7% difference with as many less clocks, it dkesnt happen like that.

 

[Tír na nÓg]

^I totally agree, that's why I am talking of weird frequency reading.

Not much to left over: benchmark has been run on a clean windows 7 install (imaged after all chipset drivers have been installed).

 

[Tír na nÓg]

Bumping this one: wondering if anyone else experienced the same kind of behaviour.