Moving forward with the transition to 40nm, Nvidia has officially taken its GT200 architecture to the mainstream today with the retail launch of the are among the first to announce graphics cards based on Nvidia's 40nm GPUs. Compared to their OEM counterparts, Gigabyte has bumped up core clocks and dropped memory speeds on both cards, while including a significantly larger heatsink and 80-mm fan with the GeForce GT 220.