entee writes: Researchers at Stanford tested over 20,000 NVIDIA GPUs around the world using the Folding@home distributed computing platform, and found that a substantial number of NVIDIA GPUs exhibit "soft" memory error. Even after applying a crude correction for computing errors, as many as two-thirds of graphics cards were found to "forget". The paper claims this is a problem in all existing NVIDIA GPUs: "G80 and GT200 are both vulnerable to a nonzero per-transaction error rate in memory accesses", and that it is likely true of boards from all GPU manufacturers. This study comes on the heels of Google's recently reported "hard" memory error rates in its server farms. Given the rapidly swelling number of GPUs user for scientific computing applications, perhaps this result explains why NVIDIA plans to introduce ECC into its next generation hardware.