So, you have an iMac "A" or "B" and wondering what to do with that mysterious Mezzanine port? Wonder no more. You can use it for a Voodoo2 "Game Wizard" board from MicroConversions ! Check out the difference it makes:

Conclusion: If you got a Mezzanine ported iMac, flaunt it!
If you are a gamer, you NEEEEEED this board!

Not only is game speed "supercharged" by the 3Dfx chip set, but the quality of visual effects is much nicer than the RAVE versions of Quake and Unreal.

The installation can be intimidating to non-techies. I've cracked open an iMac on several occasions. The trick is to go slowly and carefully since there are many thin, exposed wires and delicate parts. The installation manual provided by MicroConversions is very well written and each step is illustrated with color photos. Take your time... like you are disarming a bomb. (While you got it open, it's a good time to max out your memory!!!!)

As with other PCI based Voodoo boards, there is a pass-through video connector so you can use both RAVE and 3Dfx aware apps. In other words, you can have your cake and eat it, too.

The only downside I see is if you need the Mez port for another device like the iMaccessories PowerDRIVE iMac Internal SCSI Card from BottomLine.

• MacSoft's Unreal was set to 85MB preferred app size.
  The "RAVE LQ" and "RAVE HQ" initialization scripts (Unreal.ini) from Mike Breeden's XLR8YourMac site (GAME section) were used with one modification: GameRenderDevice and RenderDevice were both "hardwired" to "RaveDrv.RaveRenderDevice."
  The "3Dfx LQ" and "HQ" scripts were used unchanged.
  "HQ" stands for "High Quality" graphics options, which makes the game run slower. When you examine the "Unreal.ini" text document, you will see all the settings there.
  "LQ" stands for "Low Quality" graphics so the speed goes up.
• MacSoft's Quake was run in 640x480 with everything on (flames, shadows & filters). A big Mahalo to MicroConversions for the opportunity to test
  the iMac Game Wizard. Check out their new iWizard Line of products that can be used to modify any model of iMac to include not only a Voodoo2 board but also a speedier processor and sub woofer!
  NOTE: MicroConversions has closed its doors as of May 27th, 1999.
  The Game Wizard is still being sold by some resellers at discount prices. Supposedly, the remaining inventory is being sold to a company called iWonder Inc.
  

  Consult Absolute Mac, Deal Mac and my Hot Deals page for best prices on these and other SPEED upgrades.