alright people, give me a hand here. I have this issue, my friend has a mid-2011 iMac (i5, 2.7 ghz, 10gb RAM, 500 gb (7200rpm) HD) and it runs Premiere, Encore, Photoshop and randomly playing HD videos all at the same time, and my PC (i7 4th gen, 3.7 ghz, 1 TB HD (5200rpm), 8gb RAM, Radeon 5800 with 1gb DDR5) can't get close to that. It lags a lot when trying to do anything while rendering in Premiere. What's going on here? Is it really a slightly faster hard-drive and 2 GB of RAM better than my PC setup? what am I doing wrong?