The ati 6990 will be back in stock at the end of july. If you order from excaliburPC, they have gotten them to me the fastest. I have built 4 computers this month with the ati 6990s in them. I recommend for bitcoins and the way this difficulty is going up, get an XFX 6990, hit the overclock switch, which XFX IS THE BRAND YOU WANT BECAUSE THEY WARRANTY YOUR CARD WITH THE OVERCLOCK SWITCH FLIPPED to turbo mode. I get a constant 900 hash with one and 1750 with two of them in quadfire. You need a really good case and some really good fans to keep them cool, my cards on all the builds stayed in the 85 range running full out. I couldnt believe this crap, its like running a furmark stress test on them 24/7 lol.
You can get the XFX for 730 bux, just order it and they will send it ASAP. They have been pretty fast within a week or two for all my ati 6990s I have ordered from them. Ebay wants 1000 to 1200 for one, which they are not worth that at all. 730 is a perfect price point for them. You wont be dissapointed, but go with XFX for the warranty running them this hard for mining.
BY THE WAY, NEWBIE for posting but have been reading the forums for a month or so. Great place. love bitcoins. so HI..
Hey Fellow NEWBIE...
Thanks For The Info.
I Will Go Check Them Out. (excaliburPC)