I am looking to upgrade my motherboard to suit a better CPU and upgrade Ram to DDR3. i have having trouble finding anything. i know dells are hard to change motherboards over with the connectors. im wondering if its worth it. my specs on this computer are model Inspiron 518 /Cpu Intel Core 2 duo 2.66 Ghz / Graphics card NVIDIA Geforce GTX 660 Ti/ Operating system windows 8 64Bit / Ram 8GB of DDR2 / power supply 550w Thanks for your help.