NVIDIA gets official with GeForce 9800 GT / 9800 GTX+ GPUs | Engadget
GeForce GTX 560 vs GT 9800
EVGA GeForce 9800 GT (512MB DDR3 PCI-E) Review: A small GPU that isn't too bad, but it doesn't measure up to the competition. - PC Components - Graphic Cards - PC World
PNY GeForce 9800 GTX+ Video Card VCG98GTXPXPB - Newegg.com