Some readers reported that their local dealer was willing to order the 7800 GT as 'spare parts' but would have to charge them $650 to $700.
It's not available as an aftermarket upgrade. To us it's a 'no-brainer.' If you neglect to select that CTO option, you won't be able to buy the 7800 GT later. We've said before that if you are buying a new Dual-Core or Quad-Core G5 Power Mac, you should order the optional $350 GeForce 7800 GT. With prices as low as $550, the 7800 GTX 512MB card is a compelling alternative to the $1650 Quadro FX 4500 - which can only be purchased when you custom order your new Dual-Core or Quad-Core G5 tower. Though we didn't graph it, the 7800 GTX ran our Motion 2 RAM Preview Render test 10% faster and the iMaginator Core Image test 17% faster than the top OEM card, the Quadro FX 4500. It's a 3D gamer's dream come true for Dual-Core and Quad-Core G5 owners. The 7800 GTX is an impressive experiment.
