PDA

View Full Version : pc2700 ram in a g5 1.8 rev a?




ph0rk
Aug 29, 2007, 09:11 AM
I happen to have about a gig of pc2700 ram that is unused (decommissioned game pc), and the g5 is starting to feel low on memory (thanks, azureus).

The ram works, the system boots, is there any compelling reason not to use it?



CanadaRAM
Aug 29, 2007, 11:13 AM
Yeah, the 1.8 requires PC3200, so either
1) it just won't boot because the Mac will detect a non-compliant SPD
2) the RAM iwould be run at higher than rated speed (increased chance of error and failure) or
3) if it runs, the entire machine would be dragged down to 333 MHZ memory speed.

Not worth the risk IMO

The only G5 that supports PC2700 is the single 1.6

ph0rk
Aug 29, 2007, 11:34 AM
Yeah, the 1.8 requires PC3200, so either
1) it just won't boot because the Mac will detect a non-compliant SPD
2) the RAM iwould be run at higher than rated speed (increased chance of error and failure) or
3) if it runs, the entire machine would be dragged down to 333 MHZ memory speed.

Not worth the risk IMO

The only G5 that supports PC2700 is the single 1.6


It boots and runs, and I haven't seen any kernel panics, etc. "Dragging the machine down" to 333 mhz memory would still be preferable to constant pageins/pageouts after a few hours of use. The system recognizes the ram as pc2700, too.

Besides, its a 1.8 ghz g5, its not like I'm shooting for maximal performance here, just something that can tolerate greater than 20 tabs in firefox. I currently have 1.5 gigs of pc3200.