My GPU usage when playing games never goes over more than half. The usage is usually about 40% and the highest I've ever seen it go to is 55%. I thought it was a CPU bottleneck but I researched it and I don't think this CPU should bottleneck my GPU. It happens in every game, old or new.
GPU: Geforce GTX 260
CPU: Core 2 duo E8400
Ram: 4 GB
GPU: Geforce GTX 260
CPU: Core 2 duo E8400
Ram: 4 GB