I am in the process of building a high performance system. I am looking at the combo; XFX nForce 750i SLI Extreme Motherboard - NVIDIA nForce 750i, 45nm Support, Socket 775, ATX, PCI Express 2.0, SLI Ready, Gigabit LAN, S/PDIF, USB 2.0, Firewire, Serial ATA, RAID w/ Intel core duo E8400 processor and a, the XFX GeForce GTS 250 Core Edition Video Card - 1024MB DDR3, PCI Express 2.0, (2) DVI, SLI Ready video card,
The ASUS P5Q Pro Turbo LGA 775 Intel P45 ATX Intel Motherboard w\Intel E8400 core duel processor
XFX HD-577A-ZHFC, and the Radeon HD 5770 1GB 128-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFireX Support Video Card.
I am undecided about which combo will give me the best performance and allow me the ability to upgrade to say a high end Quad core processer in the future.
Compare the Radeon HD 5770 1GB 128-bit GDDR5 PCI Express 2.0 x16 HDCP Ready CrossFireX Support with the XFX Radeon HD 4890 Video Card - 1024MB DDR5, PCI Express 2.0 x16, CrossFireX Ready. Which would you preferr.
The 4890 is a little faster than the 5770, but the 5770 has DX11. The 5770 also uses less power. Personally, I would get the 5770 because of its lower power and DX11 support, but if you don't care for DX11 support, then the 4890 would be the better choice.