Hello, lately my old 9 years old sustem has being crashing. I don´t do gaming, just surf internet and ocasional graphics design. Most likely is a problem with the motherboard. I´m thinking in replacing it and also the CPU, keeping only the graphic card and the 16gb DDR3 ram. My current CPU is AMD Athlon(tm) X4 760K Quad Core Processor 3.80 GHz. As so, what would be a cheap upgrade that would allow me to use the same DDR3 rams and a faster CPU that worth it? Thanks