Teardowns

27″ iMac Teardown

We spared no expense to bring you internal photos of Apple’s latest and greatest. We have completely dissected the biggest iMac money can buy. We also made a super-fast YouTube video slideshow, replete with banjo music, for your enjoyment.

Teardown Highlights:

  • The power supply puts out 25.8 amps at 12 volts, for a total output of 310 watts (365W input, 85% efficiency). That’s the biggest power supply we’ve seen in an iMac.
  • The GPU and CPU are quite far apart, and they have separate heat sinks leading to opposite sides of the computer. This rather complex feat of thermal engineering allowed Apple to upgrade the iMac to use Intel’s desktop line of processors.
  • The lack of Blu-ray support in this iMac is a bag of hurt. Fortunately, there is a drop-in replacement. (Of course, until Apple releases software support, you’ll still have to boot into Windows to play movies.)
  • There is a Wi-Fi antenna leading into the Apple logo on the rear of the iMac. Aside from the ports, this is the only spot on the rear of the machine that isn’t solid Aluminum. This is quite a clever design, and while it’s an obvious place to put it, we’ve never seen Apple do this before.
  • This thing is BIG. The desktop processor / GPU need three large fans and two huge heatsinks to dissipate heat.
  • The new iMac’s edge-to-edge glass can slide around. After upgrading the RAM in our iMac, we noticed the glass was slightly out of alignment on one side. You can push it back into place by hand.
  • There’s no direct line from the external Mini DisplayPort connector to the LCD. The signal will need to go through the logic board, so you’ll need to have your iMac powered on if you want to display from an external video source.
  • The 3.06 GHz E7600 Core 2 Duo processor is a LGA 775 Socket T CPU. There are some Core 2 Quad chips that use the same socket, but we don’t know if they would work. The i5 and i7 quad-cores included in the high-end 27″ iMac use a different socket, LGA 1156 Socket H.
27
The final layout
Apple 27
No screen
Removing the logic board during the 27
Removing the logic board
Apple 27
Logic board with two heat sinks