Will Server Ram Work

Solution
there are 3 main types of RAM. Unbuffered (Normal RAM) Buffered/Registered/ECC Ram which is just error correcting ram which is mainly used in servers but uses the same time as unbuffered, and FBDIMM or Fully Buffered Dimm which is ONLY found in servers.

Now which one you use depends on what CPU you use.

Most Ryze/Core i CPUS only support Unbuffered or Non-ECC Ram. Xeons then take the ECC/FB DIMM Ram. You have to see what CPU you have and see if it support it. If it is a normal consumer CPU it is more than likely a big No.
there are 3 main types of RAM. Unbuffered (Normal RAM) Buffered/Registered/ECC Ram which is just error correcting ram which is mainly used in servers but uses the same time as unbuffered, and FBDIMM or Fully Buffered Dimm which is ONLY found in servers.

Now which one you use depends on what CPU you use.

Most Ryze/Core i CPUS only support Unbuffered or Non-ECC Ram. Xeons then take the ECC/FB DIMM Ram. You have to see what CPU you have and see if it support it. If it is a normal consumer CPU it is more than likely a big No.
 
Solution
That is a socket 775 CPU so that more than likely uses DDR2 not DDR3. Also it's not just the CPU but the motherboard as well. Sometimes a motherboard will take a Xeon but doesn't support ECC Ram only regular. These are usually only the E3's though that take regular as they share the same socket as Core i series. The E5's and up are usually ECC only and require a server motherboard most of the time.
 
It looks like there are a few DDR3 models out there.

As far as the Xeon. Pretty sure you need a modified BIOS to run that properly which you are now on your own on that part. As far as RAM goes on the older Core 2's that is up to the motherboard not the CPU as those CPU's don't have the memory controller built into the CPU like the Core i's and up so I would still stay no to the ECC ram.