Maybe too late to make a difference, but the P5Q-E is a Crossfire MB; the 9800GTX is nVidia, so you need an SLI MB if you want to use two of them. So if you want a dual video card setup, you need to change one of those components (and get a beefier PSU); if you only want one video card, you could’ve saved some money on a MB with only one PCIe x16 slot.
I have my order on its way, but I did something similar. I picked up an Asus P5Q-Deluxe and have an 8800GTS 640 MB to put in it. I was buying it for other features of the mobo, not the Crossfire. I have a SLI mobo right now, and even after 3 years haven’t used SLI yet. Fortunately, I also purchased that mobo for other features that I wanted not in the “lower” cost versions.
In regards to purchasing OEM versions, I did this in the past with XP and Vista, but I recently decided that the difficulty in doing upgrades of the mobo/CPU without disqualifying the OS (since it’s supposed to be attached to a specific system) it was better to by the Vista Upgrade package and do the clean install procedure. Pricing it out, it’s cheaper than buying OEM (it’s sitting here on my desk beside me right now, all black and pretty) and you get both 32-bit and 64-bit versions available in the package (unlike OEM). Fortunately, I still qualify for the upgrade since I have a full XP version that’s not been upgraded (my old Vista was also a full version).
Too late now, I suppose, but I figured I’d point out that you could save some money by buying the retail upgrade of Vista rather than going OEM and avoid some of the OEM pitfalls. Prices fluctuate, though, so perhaps it wouldn’t be that different whereever you are.
Jeez, don’t mention that total because people will think you need thousands of dollars to build a computer that can play PC games.
I guess my $500 budget build last year was kind of unfair since I had the monitor and XP. But everything else was brand new. My recent $500 upgrade was really just a money-wasting impulse purchase to play all the new games this fall.