Both ATi and nVidia has been shipping out chips like there is no tomorrow. And since many 3rd party manufacturers wants to make their cards unique they add/remove things making it even harder for the consumer to get a grip of reality. Below you will find reviews from other hardware sites that will hopefully make your choice a little easier:
First we have bit-tech that has tested a roundup consisting out of PCIe graphic cards (and their respective AGP-version):
– Sapphire RADEON X800 XT (without PE)
– NVIDIA GeForce 6800 GT (PCIe model)
– NVIDIA GeForce 6600 GT
– Sapphire RADEON X600 XT
– Sapphire RADEON X600 Pro
– Leadtek WinFast PX350 TDH
Read more here
Another review from bit-tech about “GeForce 6600GT & 6800GT PCI-Express” can be found here
And for those of you who wants a different cooling solution can check out Hardware12v’s review of Gigabyte 3D Cooler-Ultra. (Babelfish link).
If you’re gunning for a GF 6800 Ultra you might want to look at trustedreviews test of “AOpen and Leadtek GeForce 6800 Ultra“. Read more here.
Maybe you feel that this set of new graphics cards are a bit too pricy. Well XYZ Computing has just taken a look at the “aging” 9800 Pro. Read more here.
I hope this set of reviews helped you at least a little.