That isnt the GPU client. That is the CPU client. Running that on my old P4 would take over a week to complete a Work Unit. As where i can run the GPU client and complete at least 3 Work Units a day. The CPU client is only good if you run a Quad Core CPU. Then you run it in SMP and it can really take off. It may still take a couple of days to complete a WU but it is a much larger WU than is done on the GPU.