I'm already slightly over my budget, I might be able to spend slightly more though. Anyhow here is what I have.
I was going to go with AMD just because I have always loved AMD, but everyone is talking me out of that for the time being. I also was going to go with a more powerful GPU, but decided to get 2 slightly less powerful ones and run them in CF/SLI. Thats about it.
Then we come to the GPU. And now motherboard is also important. We already agreed that you need to drop the Biostar motherboard, but what to get instead?
Well this is a question that has more to do with your GPU selection and budget. If you need to Crossfire properly (x16) you need X38 or X48 chipset motherboard. That means spending about $100 extra for it, if not more. On the other hand, if you got an HD4870 1GB instead of two HD4850's you would have almost similar performance without the need to get a very expensive motherboard, and you can even downgrade the PSU to the 550W version.
The amount of bandwidth limitation on a P45 board with two 4850s at 1680x1050 is not anything huge. Probably around 4 FPS in most games, compared to an x38, which in turn has similar FPS differences when compared to x48.
However, if you are over budget, you might be better served by grabbing a single 4870 and getting a good after market cooler for that CPU You'll get some pretty nice gains by overclocking, at a minor cost. Later, if you feel you are running out of GPU power you can add a second card.
Proximon and aeiouandxyz are correct. You're not using much bandwidth on that resolution anyway. I'd say a few frames. You will start to see quite a performance difference on 1900x1200 but not to that extreme, beyond 1900... thats when you wished you bought the X38/48 series.. just kidding, but it takes quite a hit as it relies heavily on the GPU to send data as much as possible.
Not sure of the 4850x2 pricing details, but that will outperform the 4870, if it costs more then go with the 4870. A 4870 on 1680x1050 is already an overkill.
The PSU is an overkill as well. I'm using 4850 crossfire OC'ed Q6600 @ 3.6, watercooling and 4 HDD, 2 optical, 1 sound - Corsair 620HX. My rig pulls 480watts.
You don't need the 1066 Ram as icyicy mentioned. I doubt you will be reaching that speed. a good 800 can be pushed beyond 400Mhz with better timings as well.
Have seen many good reviews for this and it should perform extremely gud with the components that u have chosen...and it will perform very well with the 2 4850s...and for the psu, i think if u are willing to crossfire then it s required...jus to be on the safer side...
and like others said dump the 1066Mhz in favour of the corsair memory and save those dollars to buy the mobo...jus my thought...correct me if am wrong
the 4850 crossfire out performs the 4870 (except in crysis -pffft... )
Lanparty is a good board - but I wouldn't recommend it for 1st time OC'ers. Theres too much tweaking functions that it confuses the heck out of anyone.
The Rampage is an awesome board if you can overcome the ram compatibility issue. Easy to OC.
No reason to spend more on the PSU when your rig is not consuming that much. a 620 already has enough head room. As a matter of fact a 550 is already enough.
Wow, I really appreciate all the comments and help. I suppose I could go with 1 video card here and take almost everyone's suggestion, and cut down on my PSU output, and obviously take the more appropriate RAM and HD. So with that being said, how does this look..again I appreciate any and all comments!!
the 4870 512mb vs 1024mb are about the same speed in games. The latest tom's chart showed 0-1fps diff across the board. There is just no reason to spend 40-60$ more on no increase just for the sake of spending money.
At 22inch, you will be very well served with a hd4870 512mb.