Computer replacement!

[Zich]

OK... so my old computer heard me talk of replacement, and committed suicide (fried Mobo) a few weeks ago. I have been doing some playing from the laptop, but 5 fps in any BG/dungeon/city is killing me. I am now definitely looking at a full replacement for my old PC.

Here is what I am toying with:

i7 920 Proc & Mobo

6g DDR3 Ram

Twin 4850 GPU's

640 GB HDD

Thermaltake Case/ 850W Power Supply

the extras:

Blu-ray Player/ CD/DVD Burner

Media card reader

Borrowing 2nd dvd drive from old PC, as well as the old 300g HDD for extra storage

My thoughts:
the i7 is a bit steep, especially the board, but I think it has a long lifetime of upgrade potential. Cost between 512 and 1gb 4850's is pretty close, but I'm not sure if its worth it at all.

If any parts have cheaper equivalents/better alternatives in the same price, let me know. I want a decent machine, but cost is still a big factor.

Any insights, recommendations, or suggested changes? I will be starting to purchase mid-July, hopefully build by late August. Also point out anything I forgot, I won't put it past me to overlook something obvious!

Also.. I did a lot of pricing on Dell/HP and even iBuyPower and CyberPower (who royally screwed the build on my last rig) and self-built seems worthwhile, but one option I saw everywhere was a 'gaming network card'. this sounds like something one doesn't need, but any opinions on the real value of this extra?


~edit- combo pricing on the CPU/mobo expired.. put up new link