Currently Being ModeratedJan 9, 2013 4:09 AM (in response to karebu)
OK will check that when I get home.
Out of interest, I just looked at a memory upgrade manual on Apple's site, it looks as though the pairs of modules are not supposed to be split - one on each memory board - as I have been putting them, they seem to go in pairs on the SAME memory board.
I had been putting 1 module on EACH memory board as opposed to in pairs on the same memory board. I hope thats the problem, that would be excellent if it is
Currently Being ModeratedJan 9, 2013 4:21 AM (in response to theHotHead)
usually when they are put in their correct pairs they can run at at faster speed. no major issues otherwise.
if you do not have 64 bit.. you will only have 4gb of usable RAM. and as for how to fix it, you need to reinstall your OS, and make sure you install the 64 bit.
Currently Being ModeratedJan 9, 2013 7:09 AM (in response to karebu)
if you do not have 64 bit..
you need to reinstall your OS, and make sure you install the 64 bit.
It is not necessary to re-Install, that can feature can be re-configured.Mac Pro (Early 2009), Mac OS X (10.6.8), & Server, PPC, & AppleTalk Printers
Currently Being ModeratedJan 9, 2013 7:41 AM (in response to theHotHead)
Incompatible DIMMs are rare but not unhead of.
Has nothing to do with Lion or 64-bit mode (you can't, you have EFI32 1.1 and would need EFI64 Mac Pro 3,1 or later).
you can do some voodoo but if you are in USA you can get high top FBDIMMs $35 2x2GB set @ Amazon.
Ideal is 4 or 8 DIMMs, not 6 (latency and such).
Faster? No. Bandwidth, yes. And take advantage of quad sets = quad channel.
Currently Being ModeratedJan 10, 2013 4:36 AM (in response to theHotHead)
Karebu, the OS was running as 64 bit. The problem was not putting the same paired modules together on the memory board, I now have 9Gb RAM showing up !!
Thanks for all of your help anyway.
More Like This
- Retrieving data ...
- This solved my question - 10 points
- This helped me - 5 points