u want a low cost high end pc??? ....
and in nvidia its sli...
in ati its called Cross fire..
by 8800 equivalent u be buying 2 4850's..
and a OCZ or Gskill 4GB Kit..
Best for Raid... well how much space u need?? ... depending on that.... stack souple of 500's or 640...
as for the proccy buy the Q93xx.. will be abt 12,xxx.
Motherboard: Asus P5Q PRO 8.5k
Processor: Intel Core 2 Duo E8500 8.6k ... core 2 duo is enuff but check 93xx series... 12,xxx/-
HDD: Western Digital 640GB SATAII 3.8k * (nos. u want)
RAM: Transcend 2x2GB DDR2 800MHz 2.7k
my pick for RAM will be Gskill 4GB 2x2GB 1000MHz or 800MHz -- >5k for 800 i think
One of these is enuff Palit HD 4870 1GB GDRR5 Sonic Dual 20k but or even the 4850x2 ...
but if u do want crossfire then Palit HD 4850 512MB 9k...
Palit is cheaper...but saphire is better