The "GTX 490" is rumored to be 2x GF104 (with 384 SP, 1 GB memory, high-ish clock speeds). That and "GTX 475", which is a single-GPU GF104 card with 384 SP, 1 or 2 GB memory, high-clock speeds, and 4-way SLI capability. NV's winter 2010 catalogue for enthusiasts