SLI/Hybrid SLI question (this is sort of technical)

[Occulus]

I have a XFX nForce 750a SLI Socket AM2+ motherboard with two PNY GeForce 9500 GT (512MB) video cards, 4GB of OCZ SLI PC6400 DDR2 800MHz RAM, and an AMD Phenom X4 9500 4M 95W Socket AM2 CPU (quoting verbatim from my invoice; I got a hell of a deal on all this as a package). This motherboard has "Hybrid SLI" capability. Currently, I have my monitor plugged into the PCIe slot 1 DVI port (using a VGA adapter; it's an older monitor), instead of the motherboard's onboard DVI port.

My BIOS has an "Enable Hybrid SLI" option. This is currently disabled. I play a lot of high-end games (Crysis, Bioshock 2, Prototype, Mirror's Edge, etc.).

Would I see any performance benefit to enabling the Hybrid SLI option, or should I leave things as they are? I'm using my old WinXP Pro 64-bit after having to downgrade from the Win7 Evaluation Edition (which is set to expire), but the framerates I got from Win7 (60 fps consistently, even with Crysis!!) make me want to try to optimize XP to hell and back until I can afford a copy of Win7.

Any suggestions?

[UP_4012]

1. Enable SLI as per usual in the nvidia desktop manager.

Hybrid SLI is for using a discrete + integrated graphics setup. You said you have two 9500 GT cards, so just SLI those.

[Occulus]

2. That's what I thought.

I'll remember to do it if one of my cards coughs and dies, though.

Thanks!