Do we have to use FB DIMMs? Maybe it's just CAPABLE

Do we have to use FB-DIMMs?
maybe it's just capable of using those DIMMs if you want to dish out for the top of the line RAM.

Will my current RAM work in the new MacPro?

DESCRIPTION:
-----------
2GB PC2-4200 (533MHz) non-ECC DDR2 240-pin DIMM memory
upgrade kit (2x1GB) 2GB memory upgrade kit for Apple Power Mac G5
2.0/2.3GHz Dual Core & 2.5 Quad. This kit contains (2) 1GB memory modules
for required installation in identical pairs.

Appreciate all your help. I'm trying to figure out how much it's gonna cost me to replace my Quad G5 with a Quad Xeon.

Thank you,
Evan Evans

G5 Quad 2.5Ghz, Mac OS X (10.4.7), 8GB Ram, 1TB HD

Posted on Aug 7, 2006 3:24 PM

Reply
6 replies

Aug 8, 2006 12:02 AM in response to Evan Evans

Yes.

FB-Dimm is a completly new technology. The bus design that the RAM runs on is radically different- aside from the inclusion of an AMB chipset on each module, that handles the Bus->Memory Chip translation/buffering. It was designed for seriously-high density setups (over 8 RAM slots), as well as preventing/doing away with some of the signal problems inherent in DDR memory busses.

The modules are of a different pin count and keying.

Sticking DDR2 in there, err, forcing it in there, will make your MP release magic blue smoke.

-S'Captain

Aug 8, 2006 8:53 AM in response to Evan Evans

You would be hurting yourself by trying to use non-FB memory .. assuming the system would even let you use it. At any rate, its wanting memory clocked for 667mhz .. your existing memory listed is @ 533, so that's a "no-go" right there.
While still pricey, NewEgg has some decent deals on FB ECC 667mhz DDR2 DIMMs .. so long as you're not wanting 2GB DIMMs. Those are pricey.

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Do we have to use FB DIMMs? Maybe it's just CAPABLE

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