Hi people, just wanted to check if anyone here has experienced this. I did a search but only articles and news showed up.
Problem is simple: Bought a second EVGA GTX 460 Superclocked (1GB) card to ensure top performance in BF3. I ran TessMark 0.3.0. to see how the performance was improved. Turned out it wasn't. I am getting higher performance from a single GPU than in SLI. What gives?
Here's my rig:
Mobo: ASUS P7P55D-E Premium
Graphics: 2xEVGA GeForce GTX 460 1GB PhysX CUDA in SLI
CPU: Intel i5 760 Quad
Memory: Corsair 2x4GB DDR3
HDD: Intel SSD x25 80GB
PSU: Corsair TX 850W
OS: W7 64 Pro build 7600
I have uninstalled the old NVIDIA driver and ran DriverSweeper in Safe Mode before installing latest driver (280.26) before testing. Both cards are installed in PCI-Express 2.0 x16 slots.
I read somewhere that CPU's can be the bottleneck when it comes to SLI. Still, I would be surprised if an i5 760 would cause this.
A side fan blowing across the cards can help if your case supports it. Just how hot are you talking about? If they get over 90 degrees I would be concerned, less than that under a heavy benchmark load is probably ok since regular gaming wont get them that hot.
You can try downloading MSI afterburner and setting a custom fan profile if they are getting too hot for comfort.
45-50 fps on heaven is pretty good, I have a single 460 in my HTPC and I think I remember it being around 30 fps at those settings. My heavily overclocked 465s get 53 fps.