Just a quick question. I am currently running an Nvida geforce 8800GTX and have been offered an XFX 8800GTX XXX so i can run sli but was wondering if it will work as Regular 8800 GTXs are usually clocked at 575 MHz core and 1.8 GHz RAM speeds. With the XXX, XFX has buffed up the core to 630 MHz and the RAM to 2.0 GHz speeds. Will this make a difference?