buying a g5 tower - adding extra ram

I'm looking at buying a G5 tower.

Specs - Dual 1.8ghz / 1GB Ram / 80GB hardrive.

What i'd like to know is whether I can take the Ram out of my old G4 tower and use in the G5, and if so how many slots the G5 would have for extra Ram.

No the memory will not fit.

Here are the specs for the G5 memory:-

Memory Upgrades for your Apple Power Mac G5 2x1.8GHz (June 2004) at OtherWorldComputing.com

Here are the machine specs if it is the PCI-X model; and it will take up to 8GB memory in matched pairs:-

Apple Power Macintosh G5 1.8 DP (PCI-X) Specs (Original/Late 2003 - M9393LL/A) @ EveryMac.com

thanks for the info. very useful.