The new 7950 GX2 card consumes 143W per card. As you need two GX2 cards to make the Quad SLI work, you will end up with a total draw of 286W for two cards. The core is clocked at 500MHz while the GDDR 3 memory runs at 1200MHz. Each chip addresses 512MB of memory, meaning that each card has 1024MB memory or that Quad SLI totally features 2GB of graphic memory.
