In September 2009, we saw AVADirect push the boundaries of portable computing with its honkin’ Core i7-975 Extreme Edition–equipped D900F desktop replacement. That behemoth was both a back breaker (at 15 pounds) and a benchmark buster (at least in our applications tests).
This month, we’re presented with AVA-Direct’s X8100—a rig that’s similarly monstrous but boasts a completely different character. The X8100 features a Core i7-820QM, a true mobile quad-core part. Intel’s Clarksfield chips have obvious advantages in a mobile platform, including a lower price and a much lower TDP (thermal design point)—45W max vs. 130W—than the desktop Nehalems. There’s also more emphasis on Turbo Boost. So, although the i7-820QM has a base clock of 1.73GHz, it can theoretically reach 3.06GHz in single-threaded apps. Photoshop is our only mostly single-threaded application benchmark, and you can see from the numbers that the X8100 performed 20 percent better in that test than our 3.06GHz Core 2 Duo zero-point rig did. But in the multithreaded tests, where the X8100 didn’t have the full advantage of Turbo Boost, the applications scores were even more punishing—with the X8100 achieving leads in excess of 50 percent—such is the power of those two extra cores, plus HyperThreading, plus a superior microarchitecture.
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