View Full Version : Ram for G5 1.8ghz

Oct 19, 2006, 05:01 AM
I just put 2 sticks of 512mb in my g5 with these specs pc3200r-30330, the machine doesn't recognize them. I notice that the existing ram got this on the label pc3200u-30330. Pease someone tell me the difference between these 2.

Oct 19, 2006, 05:05 AM
Im no expert but maybe one is buffered and the other is unbuffered?

I cant remember what it is you need in the G5.

Oct 19, 2006, 12:02 PM
You need unbuffered Ram in a G5, unless it's a XServe

Oct 19, 2006, 12:09 PM
We don't know what brand or model you put in, but

R = Registered or Buffered (usually seen only in Error Correcting (ECC) RAM
U = Unbuffered or standard RAM (Could be ECC or non-ECC, although Non-ECC is standard for almost all desktop and consumer machines)

Count the number of RAM chips on the module. If it is a multiple of 8, then it is non-ECC.

But if it is a multiple of 9, then it is ECC RAM and not appropriate for your Mac. If it says Reg. or Buffered anywhere on the label, it is also not for the Mac.