Hey guys,

I Recently acquired a Dual-Core 2.3GHZ powermac G5.

the current Graphics card is a Nvidia Geforce 6600 256MB PCI EXpress card.

I find it lacking for my needs. (can't run Doom 3 on Ultra settings)

What is the most power PCI Express Graphics card I can get for my G5 flashed or not flashed.

Also I want a card that has 512MB of VRAM, it has to be a fast card and have superb image quality.

Is it possible to flash an ATI 4870 (the PCI Express one) ?