Originally posted by rhogue islander:
It should, but you won't know unless you try it.
To be safe, I might consider ordering from www.crucial.com if you don't think you'd be able to return it. Crucial sells memory specifically for the G5.
MicroCenter will allow you to return hardware if you have any problems or even if you just decide you don't like what you bought.
There should be no problem buying the RAM and trying it, then returning it if needed.
MicroCenter is a good place to shop for PC and Mac products. And I don't work for them nor am I paid to say this.
Just based on my experience with them over the past 20 years.