The 6 pin pci-e power connector isnt for the fan, it's for the GPU. It requires more power than the pci-e slot can provide. It will not run without the connector plugged in. All you need is a 2x molex to 6pin adapter. It would have came with your graphics card had you bought retail. Can be bought for $10 on Newegg, not sure about any retailers in Lithuania; ask around some specialty computer shops in your area.
You seem to be one unlucky guy. I have not had a truly defective video card out of 7 I've bought. 3 ATI 4 Nvidia. Personally I'd go Nvidia because I happen to like the fact that they can do Folding@Home really well, and because their AA and Control Panel seem superior, in my opinion.
About the power supply, specs depend on the hardware of the psu. And if it is a cheapo 'light' one, there wouldn't be a lot of amperage on the +12v rail in most cases. But his has 38v so it should be fine. What brand is it, anyways? If its Apevia or Bestec, buy a PC&P, OCZ (bought out PC&P, and IIRC is using their tech and parts) or a Corsair. A vx450 would be enough to power either of those cards.
Just a note, the FALS, while really fast, is very loud during intense reading, so you don't want to use it as the primary operating system drive, only a storage drive. In hindsight, I'd go with the 7200.12. Avoid the .11. Not sure about the F1.
I'd link to newegg for the parts, but since you aren't in US i'd think it'd be useless. You can pretty get my exact system for that price, and it runs games great for me, so it'd be hard not to recommend.
edit: looked up a Dutch PC parts e-tailer and realized prices are a lot higher with taxes and stuff, so you might have to get cheaper parts. If that system above comes out to be too much, try this one
Seems to fold very well (6,037 points yesterday. Today I seem to have gotten harder ones ) for only $155. BTW, it's on sale at newegg for $145 if anyone is interested. http://www.newegg.com/Product/ ... eoCards-_-LC2D-_-14130482 : Promo code = EMCLSNT35
If you didn't own the g25, I'd say grab it in a heartbeat. But since you already own a g25, the upgrade is pretty unnecessary, unless money isn't a factor.
edit: just read you broke it . Try fixing it yourself. Then get the fanatec.