An anonymous reader writes: It appears that the new AMD/ATI 790X (NOT 790FX) chipset has data corruption issues much worse than the Opteron/Phenom cache bug. We bought several Gigabyte 790X boards from Newegg and other places. Running in both linux and windows xp/vista significant data corruption was experienced and we lost approximately 2 gigabytes worth of data (backed up luckily!) due to this corruption bug. it seems that when read/writing from memory and reading/writing from both IDE disks (master/slave), the bug is triggered with (according to memtest type software and some other homebrew stuff we cooked up) several hundred errors per million read/write cycles. No news sites have reported this and newegg quietly pulled the 790X boards from its websites. We were strongly urged not to report this and it appears that it is currently under wraps pending further investigation. This is with all 4 channels occupied (DDR2-1066) and a Phenom 9500 at stock with an HD3870 at stock sitting in the PCIe 2.0 mode. All our 790X boards have been returned under RMA and if you have one, caution and testing overnight is suggested before using it for business or personal use. 790X boards have only one PCIe 16 slot NOT two. If you have two then it is a 790FX board and unaffected by this bug.