Just read Barefeats latest iMac/ mac pro test results and, surprisingly, it looks like the iMac with Radeon 2600 might be the best choice for all but really keen gamers. Plus the advantage of being able to buy a non-BTO iMac, FWIW
Here are a few quotes:
"Again, our jaw dropped when the iMac 2.8 beat the iMac 3.06 -- badly. Both iMacs had 4GB of RAM, but the 2.8 had the Radeon 2600 Pro and the iMac 3.06 had the GeForce 8800 GS. That was the only difference".
"The ATI Radeon 2600 Pro (and XT) is supposed to be a weaker graphics processor than the optional GeForce 8800 GS (and GT). But in this case, it's not weaker".
"If you are an avid 3D gamer, there is a strong argument for buying the optional GeForce 8800 GS or GT. If you are not, the Radeon 2600 Pro or XT will likely serve you better".
http://www.barefeats.com/imp03.html
Here are a few quotes:
"Again, our jaw dropped when the iMac 2.8 beat the iMac 3.06 -- badly. Both iMacs had 4GB of RAM, but the 2.8 had the Radeon 2600 Pro and the iMac 3.06 had the GeForce 8800 GS. That was the only difference".
"The ATI Radeon 2600 Pro (and XT) is supposed to be a weaker graphics processor than the optional GeForce 8800 GS (and GT). But in this case, it's not weaker".
"If you are an avid 3D gamer, there is a strong argument for buying the optional GeForce 8800 GS or GT. If you are not, the Radeon 2600 Pro or XT will likely serve you better".
http://www.barefeats.com/imp03.html