Yes, only the early 233/266 Rev A/B imacs can be upgraded thanks to the "Mezzanine" slot. Here is a very old article on it : http://www.theimac.com/voodoo/voodoo.shtml

So if anyone see's one for sale, or has one let me know a.s.a.p as it's the only graphics card upgrade made for imac! Right now I'm stuck with a ATI RAGE IIC

Hi I have just bought a imac rev a (I'm a teenager can't afford much) and would be keen to boast it's graphics performance level to that which I can at least run Quake 3. I need one of these cards so if someone has one lying around or can sell me one ripped from a imac they no longer use let me know either in this thread or email me at madmanjockuk@yahoo.co.uk with your offer. I can pay by paypal and would be willing to pay for postage from anywhere worldwide.

I know most of you are PC 3dfx users but someone may have the prize I'm after

Thanks.

MMJ