4850 crossfire performance on p35

I am new to the forums...hello.

I have a question pertaining to p35 crossfire performance.....before i begin, please do not point me to the cf/sli faq thats stickied.

I currently have:
E6550@2.8 ghz
4 gig pc 6400 hyperx
>>>ASUS p5ke-wifi<<<<<
bfg 8800 gts 512

My plans are to sell the 512, and pick up 2 4850s. I wish to see significant performance increase over running a single 8800 gts 512. This motherboard is a mobo i bought last year, and i am an idiot for purchasing it...so needless to say, its temporary. (its 16x and 4x slots concern me). I will be upgrading to a ddr 3 x48 in the next year, so emphasis on this being temporary. I am wondering if running these 2 cards on THIS board even with one of the slots being 4x will put me at a higher performance point or a lower performance point than my current card. I want more power than i have currently and so i wanted to achieve a temporary way of doing that...

One other question i might ask: should i instead just purchase another 8800 gts 512 and get an sli board...the reason i didnt want to do this was that i do not want to buy a board thats not ddr 3 if im going to upgrade; but doing another card, board, and ram will cost me too much at this current time....please provide all the feedback you can...thanks

Mmm, I think the 4850x2 is due in a few weeks, you might want to
1) check if it's true
2) consider it instead of 4850 in CF

Since the CF is internal on the x2 cards you won't need to use the bottlenecking PCI-E x4 .

You beat me to it.

i dont know, the 4850x2 was supposed to be released in september, its almost late october... i think their holding on to it just in case nvidia has something up its sleeve...