Just to be safe, you can upgrade your PSU to a 600/650w for $5 more. Also, you can get an internal DVD drive for less. You can also get an AMD Processor for less than an Intel, and it still will perform the same. Try an AMD Phenom II X4 965, and that will be much cheaper, but will perform the same. Then pocket the extra cash or spend it on slightly upgrading your GPU to a GTX 560.