AMD HD6990 Review
3D Mark Vantage
Always a good test of raw horsepower with modern cards, the HD6990 puts up a fabulous showing straight out the gate. It's nearly identical to two separate HD6970s in Crossfire. Price wise it's perfect too being right between a single and SLI GTX580s. The SLI GTX580 P score is off the graph because that's not why we're here today. The HD6990s X score of nearly 21000 is 4000 points better than the ASUS Ares and the Sapphire HD5970 TOXIC. Impressed yet?
3D Mark 11
If the HD6990 looks good in Vantage, in the modern, shader heavy, DX11-based 3D Mark 11 it's even more impressive. Whilst it obviously can't keep up with the GTX580 SLI, it's neither designed nor priced to either.