Gigabyte has released three PCI Express VGA cards based on the GeForce 6600/GT, which includes SLI technology to combine multiple GPUs in a single system. GV-NX66T256D (GeForce 6600 GT) comes with eight rendering pipelines, 128-bit memory interface and 256 MB of GDDR3 memory. The game bundle includes the long awaited "Doom 3". The lower-cost GV-NX66T128D has only 128 MB of memory and is bundled with "Thief" and "Joint Operations: Typhoon Rising". The third model, GV-NX66128D, is based on the GeForce 6600 and uses 128 MB of DDR memory.