what gpu to buy

[droidman]

HD7760? afaik there is no such card, if you re-read i said HD7970.

have a look at the benchmark threads on this forum to get an idea of what's fastest. as of right now HD6990 and HD5970 are the fastest; they're nearly the same in terms of speed, just depends on the algorithm and what the clocks are set at. HD6990 definitely benefits from VLIW4 architecture and for certain hash types can beat an overclocked HD5970.

but the HD7970 is a really fantastic card too, very impressive. if i were purchasing a gpu right now i'd buy it over anything else.

thank you for your support, i see many diferent HD6990 on the market and all with almost the same price.
XFX Radeon HD6990 4Gb GDDR5 (PCI-E) 660,15€
Sapphire Radeon HD6990 4Gb DDR5 (PCI-E) 630,00€
Gigabyte Radeon HD6990 4GB GDDR5 (PCI-E) 755,70€
PowerColor Radeon HD6990 4GB GDDR5 (PCI-E) - AX 643,75€
Asus Radeon HD6990 4GB DirectCU II 3DI4S GDDR5 669,95€
Club 3D Radeon HD6990 4Gb GDDR5 (PCI-E) 712,45€

i have no idea what is the difference between them