ordered BFG GTS 512

I wouldn't overclock unless you need to. The corsair, if it is the one I'm thinking of, has nice amperage and real good efficiency so it should do the job.

Here's one insane deal and one very good deal for high quality seasonic built PSUs.

Insane deal:

Antec NeoPower 650 Blue ATX12V / EPS12V 650W Power Supply 100 - 240 V UL, CUL, CE, CB, FCC Class B, TUV, CCC, C-tick - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Good deal:

PC Power & Cooling S610EPS EPS12V 610W Continuous @ 40°C Power Supply 100 - 240 V UL, cUL, CE, CB, TUV - Retail

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Right now I wouldn't consider the Corsair 450 looking at how for a few more bucks can net you a seasonic built 650W unit.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Seasonic made earthwatts 500W (edit: for $65 shipped no rebates)would aslo do the trick $100 is too high.

Yeah dont overclock. It will boost your 3Dmark score significantly but you wont see the results in games with G92 cards.

I am running that antec neopower 650 and it does great. I would recommend it if you want future headroom. There is no sense in buying a power supply that does just enough when you will want to upgrade down the road. <---opinion

The thing is i live in the UK, so down here the corsair 450 is about $100.

I am probally not going to upgrade for a while, so will it be able power the 800gts?

So no overclocking oke, but say that in the future i happend to have overclocked. Will BFG cover this? If anything goes wrong?

read the warranty

This warranty is only valid if the product:

* Was not damaged while being installed.

* Was not damaged by software or hardware from a company or individual other than BFG Technologies or by motherboard incompatibility.

* Was operated in accordance with BFG Technologies specifications, instructions and any technical support directions.

* Was not modified or damaged by overclocking, tampering, user error, accident, disaster, abuse, misuse, power supply, power application, alteration, repair, modification, a fix or replacement by someone other than BFG Technologies.