Msi ms 7186 motherboard, cpu support list , what cpu and ram can I use?

There seems to be a conflict with your data. The MS7186 part number (are you absolutely sure about that number?), Goggles to a socket 939 motherboard. If this is right, then the fastest processor you can get for it is an Opteron 185, but good luck finding one for less than $275.00. However, uming your motherboard is actually a MSI 945G Neo (MS-7176), it looks like the fastest processor you can use is a Pentium D 960.