Ok, this amazed me
If they could somehow upgrade the onboard VRam as well, i might consider taking my iMac to the US and get it done.
They have an upgrade for the Classic iMac with tray loading cd/dvd to a 900Mhz G3.
For
tray loading iMacsThe Classic iMac with sloth loading cd even has a 500Mhz G4
For
slot loading iMacs.