OT: RAM (DDR) speed

[Tim Seufert]

On Saturday, June 28, 2003, at 05:41  AM, Thierry de Coulon wrote:

> This is quite off topic but since there should be Mac specialists 
> around....
> I've seen the new G5 Macs come with 333Mhz DDR.

Or 400.  Only the low end model has 333.

> I've also come across infos
> that DDR 333 only brings 5-8% speed incrase.

Doing what?  The benefit of faster memory depends a great deal on what 
program is used to evaluate it.  Some programs need lots of memory 
bandwidth, others don't.

> Now the question is: if you have
> DDR 266 modules, will a Mac G5 accept them (PC Bios should provide a
> possibility to set the speed, but I'm not aware of any such 
> possibility on a
> Mac)?

In the past, Apple has never allowed for the use of memory slower than 
the memory which shipped with the computer.  I doubt they will now.