Very strange... p45 motherboard will bottleneck you with crossfire but you get a 850 watts power supply. Either get x48 and a 750watts psu (or 850) or p45 and a 500-600 watts psu (no crossfire then). I will suggest you to upgrade to the 640gb version HDD as others will and maybe this ram http://www.newegg.com/Product/Product.aspx?Item=N82E168... for lower latency.
I'm not really looking to save I just thought I may have selected stuff that was overpriced since I really don't know much about PC tech stuff. I'd really like to get a setup that I don't have to upgrade for a while and I have a budget of at most $2000.
If I decide to go with a better mobo for Crossfire will that increase the longevity of my PC? I'd rather spend $2000 now and not have to upgrade for four years than to spend less and have to switch out parts in a year or so.
you never know. yes in the sense that you can add another gpu down the road if games require it. but we don't really know what will come and how things will increase so nothing is perfect. i mean if you really want to not have to do anything you can get an x48 mobo and a 4870x2 and a beefier power supply and be set for quite some time. thing is that it is overkill right now and when you actually need that prices will be lower. so you can pay more now to not have to do anything for awhile or pay less now and be prepared to swap out a gpu or add a gpu at some point. i imagine your cpu, mobo and ram should last you a good amount of time. but you could spend the $$ on a quadcore if you really want to. again, don't need it now but in the next couple of years programs may take better advantage of mutiple cores and it might be useful to have. but of course when that point comes they will be much cheaper.
i really think you start to see some help in the 1920x1200 res and above. but quite honestly it is personal preference on if you need that. i know a lot of people that have compared that res to what you have and can't see a difference. that is why i highly recommend actually going and looking at monitors before buying. get reviews and recommendations but then look at them. because not all look the same to the same people. and if it doesn't look better then why spend hundreds on it and hundreds more on gpu that will play it on high.
the nice thing about the x48 is that you can play one. add another if you want or add a newer card later or two later. it does leave your options pretty open.
actually one thing. you have talked about not wanting to do a lot for a long time. maybe upgrade gpu but that is about it. that power supply works fine for your set up. but if you don't want to have to mess with it for several years and you can afford it then I would move up with that. because the best single cards out there right now (4870x2 and gtx280) are going to press 500w so lets say a year or 2 down the road you want to upgrade your gpu there is a good chance that psu won't cut it. but if you don't mind swapping it out there may be better available psu's then too? sorry to add another decision.
to clarify i recommended smaller power supply earlier on but that was before i new you had no desire to change components and want this for 4 years. with that info in mind that is why I presented this newest post.