Bottleneck calculation for AMD Athlon II X4 630 and NVIDIA GeForce GTX 660 with screen resolution of 1920 × 1080 pixels for General Tasks.
AMD Athlon II X4 630 is too weak for NVIDIA GeForce GTX 660 on 1920 × 1080 pixels screen resolution for General Tasks.
This configuration has 41.3% of processor bottleneck .
When playing games your graphic card won't perform on maximum possible performances (won't be utilized to the maximum), because you processor won't process and deliver data fast enough. This theoretically means that utilization of you processor will be on maximum and the potencial of graphic card will not be completely used.
While running general tasks, processor AMD Athlon II X4 630 will be utilized 100.0% and graphic card NVIDIA GeForce GTX 660 will be utilized 58.7% .
Processor bottleneck is worse, than graphic card bottleneck, because utilization of your processor will be on maximum and it will throttle other programs that are ran in background. Also you won't experience maximal performances that your graphic card offers.
You can resolve this by upgrading your processor or by downgrading your graphic card. Downgrading your graphic card doesn't make much sense and in that case is better to leave current graphic card in you computer.