Main RAM is 2GB of Samsung DDR3 with a max bandwidth of 17GB/s.

Wii U: 17 GB/s, separate eDRAM pool
360: 22.4 GB/s, eDRAM for framebuffer
PS3: 25.6 GB/s main memory BW, 22.4 GB/s graphics memory BW, no eDRAM
GTX 680: 192.2 GB/s

Edit par Gegz (18 Nov 2012)