nVidia cards=Raise all values
ATi cards=Drop mem
Now then, The best bang for buck cards are ACTUALLY not the 58xx's
It is the 5830's!!
Im running a $114 Shappire 5830 @260mhashes. Beat that!
the $140XFX ones hit 290mhashes wich is Much better.
I have a Dual 6990 rig and i regret it, Each core pulls 334mhashes and each card has two gpus, So 1300mhash/sec, Cards were 750ea
AND THE MOTHER FUCKERS ARE HOT, 100°'s when fan speeds are at 100%, and the case has around 8fans in it aswell. Altough, if i take off the sidepanel, And stick a Massive desktop fan right next to it (the really big ones 120V 50W) then the fan speeds drop to 80% and the temps drop to a beautiful 85°.
Do not buy 6990's unless you are accounting for Moores Law,
If your just mining, Buy a fuckload of 5830's, They run cold, Overclock well, And suck at gaming, PERFECT MINING CARD
https://en.bitcoin.it/wiki/Mining_hardware_comparisonI actually found that incorrect. As I stated earlier, my hashrate hasn't changed., but yet my gpu's are running 10C cooler with the underclocked memory.
As far as the rest goes, I'm not sure whether to build a dedicated rig or to just turn my gaming rig into a part time miner for now, then build a rig later. That's the biggest battle I'm currently fighting with myself. I'm seriously considering just upgrading/converting my current pc to a part time miner, then later on down the road, build a second PC as a full time miner.