Macworld has lab-tested the new iMacs, including a fully loaded BTO 27'' (i7, fussion, 680MX) and compares it with the 2011 model (again fully loaded BTO)
In general, the 2012 model is better, except the Cinebench OpenGL test, where the 2011 model with the ATI HD 6970 is better !!!!
"Those tests show the new iMac to be 22 percent faster overall, with better times in all but the Cinebench Open GL test, in which the AMD Radeon was faster than the Nvidia GeForce."
http://www.macworld.com/article/201...equipped-with-fusion-drives-cpu-upgrades.html
In general, the 2012 model is better, except the Cinebench OpenGL test, where the 2011 model with the ATI HD 6970 is better !!!!
"Those tests show the new iMac to be 22 percent faster overall, with better times in all but the Cinebench Open GL test, in which the AMD Radeon was faster than the Nvidia GeForce."
http://www.macworld.com/article/201...equipped-with-fusion-drives-cpu-upgrades.html