Is this an ok upgrade to my computer?
EVGA 01G-P4-2650-KR GeForce GTX 650 1GB 128-bit GDDR5 PCI Express 3.0 x16 HDCP Ready Video Card
Thermaltake TR-600 TR2 ATX Power Supply - 600W, 120mm Fan, Cable Managment Optimized
Inter R Core i7-2600 CPU @ 3.40GHz
NVIDIA GeForce GT 520
The GTX 650 would be a great upgrade from your gt520. It is more powerful and a new Kepler GPU. Go for it! And is the PSU what you have listed what you currently have ? Or what you want to put into your system?