To me it seems that :
1. PS3 can render at all high def resolution with-out a frame rate hit....BUT...a hit on memory
2. 360 can render at all high def resolutions but takes a frame rate hit....but...does'nt have as big a memory hit as PS3.
i want to know how PS3 is able to render at higher resolutions WITH-OUT a frame rate hit.
NOTE: any mistakes or me talking rubbish please feel free to correct me