Ok, got two video cards, SLi won't enable. Here's the specs:
- ASUS M2N32-SLi Deluxe
- MSI 8800 GTS 640MB
- XFX 8800 GTS 320MB
I have BIOS, drivers updated. Both cards are recognized by Device Manager. NVidia's CP doesn't have the SLi enable option in the 3D settings screen, no congratulations message when I boot up. No jumpers or little cards to flip around, nothing in BIOS to enable both PCI-E slots, bridge installed, both cards work on either slot.
Possibly because I have two different card mfgrs with two different memory capacities? GPUs are the same though. Really don't wanna wipe everything to get this to work. Any knowledge is appreciated.
They should SLI. I don't think the single 640 card would be faster. Make sure each card is good by using it all by itself, and do make sure the 320 is in the primary/master slot. You might also want to double check the SLI bridge and make sure its on tight.
you actually dont need the sli bridge to sli lol. But put it on, It will increase performance by a lot (10%+) and every bit counts.(with good cards) and are you sure both cards have enough power? Maybe you have 1 card with power and other without power or something lol
So let that be a lesson to those who don't know: there is no point in sacrificing memory for SLI capability.
Good to know that it works, especially without having to remove the drivers, although bad to know that it doesn't seem to give much performance benefit. Try using lower resolutions in games and see if you can see any performance benefit.