hi I have a GTX 295 but I am getting a very low performance, in fact the performance is equal (tested in left4dead and furmark) to my old card (3870) (and to an 8800GT), in some cases it's worse - in race driver GRID it's actually slower than the 3870 (and the game stutters alot). this probably doesn't make much sense but maybe someone knows why this may happen ?. it's supposed to be almost as fast as a GTX 480, that means 2-3 times faster than a 3870.
I have even reinstalled the operating system to make sure there are no leftovers from the ATI drivers.
I've tested 2 versions of nvidia drivers, the 192 and the 270. no change.
the GPU temperatures as measured by MSI afterburner are approx. 60C.
MSI afterburner shows 100% usage on GPU #0 in GRID and approx 5% usage in #1,
l4d shows 50-60% usage on both GPUs.
the hardware specs at the time of testing are:
Mobo: GA-P35-DS3R, CPU: E6750 (470*8 [3760 mhz]) 1:1 memory ratio (940 mhz)
I have also tried to enable/disable the various options in the nvidia control panel, for example threaded optimization, Multi-GPU modes, disable/enable PhysX, Disable/enable Multi-GPU mode - but they all had no effect and performance remained equal or below my old card (3870).