Well why wouldn't they buy bitcoins for 100$ each? If 1 BTC = 100$ then on more goods the users can spend their BTC on.

Does it matter what kind of pci-e ribbon/extender I use?
I heard that powerful GPUs need some quality extenders which are 2x more expensive.
Is it B.S. to spend more money or is it true?

How can I be sure that I'll not get banned by getting CD-keys from you?
All you have to do is contact VALVe once I use it, and send them a scan of the cd-key with a ticket number...

I'm interested.

I can offer 0.75 BTC

Thanks for answers, yes I knew about dummy plugs and PSU.  :]
the 3 GPUs @ 100% load with underclocked VRAM, CPU @ stock, 2 HDDs and 1 DVD, Asus P5Q-E and 4 sticks of 1 GB RAM each, should take together ca. 500 watts of energy, so my PSU will be working under pressure, so I am planning to change it. I live in Poland, so the prices are a bit different here, I'm looking for some second-hand Corsair or Be quiet! (750-850 W). I can buy a new Corsair TX 850 for about 100€ or a new 800W Corsair CMPSU for about 85-90€, but that's still expensive.
I also thought about OCZ Gamexstream 850W SLI-Ready for 65€ but I heard they make worse PSUs than Corsair..

Hello,

I have HD 6850 atm, 2x HD 5850 should come to me in 2-3 days,

I wonder what drivers and which ati stream version should I intall?

Do I need the same drivers for each gpu?

In which order should I install/uninstall cards and drivers?

Should HD 5850s be crossfired?             
Would you recommend exchanging my HD 6850 for a HD 5850 which is a bit faster, so all 3 gpu's could work in crossfire (my motherboard would support it).

What temps should I expect?
1 or 2 cards can be connected with a 15 cm PCI-E ribbon/extender, so I guess this should lower the temps somewhat. My case is some chieftec, somewhere between midi and big tower, but there isn't much space inside.

And last question, least important to me atm, because my PSU is only 550 watt Corsair (~85% efficiency) so I would have to underclock my overclocked Q9300 (3.25 GHz now, 2.5 GHz was stock):

How do I overclock the cards if they're from 2 different manufacturers? HD 6850 is a Vertex (Powercolor, as far as I know), HD 5850s are Sapphire.

Can I overclock each card separately?

Awaiting your anwers,
BTC mining noob,
Malevolent

july 18$
august 25$
september 35$
october 30$
november 32$
december 25$
january 22$
february 25$

july 2012 40-50$

1G8Lfza9GjwNPCg8Deik5o6EeShjwtyuDH

Thanks in advance!

Should be making 0.6 BTC / day after the difficulty increase
2x hd 5850 + 1x hd 6850
damn, I wish I heard earlier about bitcoins