I have an Nvidia gtx 460 overclocked by the MSI afterburner from 675mhz to 800mhz. Gpu-z v0.6.4 correctly identified this overclock; however, v0.6.5 shows the clock at 975mhz? Sisoft Sandra and PC Wizard 2012 Both agree with the 800mhz reading. From other posts there seems to be an issue with the Nvidia GTX 4__ series gpu clock speed being incorrectly identified. Any Ideas?