333Mhz IMac reporting wrong RAM

Question

Hello,
I have a purple (grape? blueberry?) 333Mhz iMac running Panther and 9.2.2. I mainly use it as a jukebox, but I have been toying with it lately, and thought about upgrading the memory. It had two 128Mb sticks. I bought two 256Mb sticks very cheap, and did the swap.
Now the iMac is definitely snappier, but it still reports two 128Mb sticks under both operating systems. What's wrong with this picture?
I also found that the motherboard says Rev.A, although it should be Rev.D. Could it be a revision A updated with a revision D processor?
Any feedback on this will be appreciated.
Peace.

Answer 1

You can put a 333 MHz CPU card on a Rev. A motherboard. The Rev. A and B motherboards also have the mezzanine slot on the back side that were removed with the Rev. C and D, so that's one way to visually check. Also, the Rev. A had ATI Rage IIc. The later ones had ATI Rage Pro or ATI Rage Pro Turbo. The Rev. A only had 2mb of VRAM, but that is upgradable to 6mb like the later tray-loader iMacs.
I've heard some tray-loaders will only recognize 128mb of RAM in each slot. Apple only specified up to 128mb in each slot, but they can usually see 256mb each. Mine sees 256mb in each slot.