Help no Ultra WHY NOT?

Computer Specs
CPU: Socket 775 LGA Intel Core 2 Quad Q6600 2.4ghz @ 2.6 Stepping B Revision G0
MotherBoard: Asus P5N-E SLI
Memory: Corsair XMS2 DHX Cooling (4 x 1GB)
Hard Drive: Seagate 7200 Sata I
Graphics Cards: PNY 1GB 250 GTS (x2 via SLI)
PSU 650W Apviea Java
Operating System: Windows 7 64 Bit Business Edition

OK so here is my deal, Future Mark 3dmark06 is 13000 with SLI and 12000 without. 3dmarkvantage i get 13000 with SLI and 8000 without. So my big problem is that my buddy has a similar build similar card and is running Starcraft 2 on ultra at 60 fps during game play with only one card! I on the other hand am running SLI and still can only run high but at 90-50FPS during game play. I don't know what is wrong with my computer or maybe nothing is wrong and it just can't match up even thought my specs beat his.

From what i've read it could be:
My Motherboard is 8x and not 16x (my buddies Mobo) on PCI-E and that is bottlenecking
My Harddrive could need a wipe
My Drivers could be %&$#ed
My CPU maybe be bottle necking

Any ideas i really need some help from anyone pro or not, i read this stuff on my own with little knowledge so i was hoping to find some real help and post my own thread

 

Maybe his gfx card is the most expensive and hell-the-****-yeah-overclocked bs on the market.

err...i mean...maybe it's better
also, some settings are processor-heavy, so maybe better processor?

 

he has 1 9800GTX+ and same processor

 

http://www.starcraft2forum.org/forums/showthread.php?t=20687 This was already posted. Please do not post double threads ever again. This forum was the right one to post in to begin with.