I need help with this since w/o GPU-Z sensor information I have no way of knowing the load on the GPU. I have been unsuccessful in getting GPU-Z to work correctly with the K20c card. GPU-Z displays "0" for frequency and doesn't show any of the GPU load or memory sensing information. My system consists of a Win7, i7-4960X cpu, Asus MB, a AMD Radeon 7800 card drives the display and a Nvidia K20c GPU (which is used for computing and doesn't have any provision to drive a display). Previously, I had the Nvidia C2070 in the same system (same slot) and GPU-Z worked perfectly. I tried with Nvidia Drivers 332.5 as well as the newest drivers. I also tried several older versions of GPU-Z. This appears to be a common problem, but based on a perusal through the Forum database there are some K20 users who are successfully using GPU-Z for the K20.