A few things. AMD is not really they way to go as of the Sandy Bridge release, because almost all the sandy bridge CPU's blow the amd's out of the water. I would suggest switching to the i3-2100 or 2400, both are very capable and beat the pants off that AMD processor. I would change out that velociraptor for a Spinpoint f3: http://www.amazon.com/Samsung-Spinpoint-Cache-Desktop-H...
It's not as fast, but you are gonna need some more storage then that velociraptor has to offer.
Also, since you are on a budget drop the ram to 4gb, you shouldn't really need more than that anyway.
With the money saved, get a gtx 460 768 or 5850.
For $900 including the monitor, forget overclocking and SLI/Crossfire. Here's a well-balanced Sandy Bridge build that will run circles around the one that you listed above and not run into quality problems. The Phenom II 840 is basically an Athlon II 645 that's clocked 100MHz higher. Check the specs. Below is a link to an Athlon II 645 vs. the Core i5-2400 comparison. http://www.anandtech.com/bench/Product/188?vs=363
And there's my build. It comes out to about $780, leaving only $120 for a monitor. If you can stretch your budget a tad, or mail the rebates fast, you should be able to get a 1080p monitor for about $150.
By the way, sorry for sounding a bit aggressive in my first post. Wasn't my intention.
Hope it works out!
Nice build hunter, we have similar taste. I thought about going i5-2400, but the 2500k is so much better. It's a question of overclock or not I suppose.
Yeah. I'm assuming he needs an OS, so that takes the Extreme4 and -k CPU out of the mix. Gotta say, I'm not a fan of OCZ PSUs though. They seem kinda iffy to me. I like the instant rebate on the Antec I listed too Mail-in-rebates seem to be a joke. I've gotten 1/4 back in the last couple months
Haha. I didn't catch that. 1 month. Dude, come back about 2 days before you are ready to order. Prices and tech will change. Z68 due next week... BD in 4-6 weeks... I guess at least we gave you an idea about what a quality $900 build will look like.
EDIT: Save an additional $150 or more to put towards this and we will be able to mock something up that will allow you to upgrade in the future, like an overclockable CPU, Crossfire-ready board, bigger PSU, etc.