Power Consumption

To provide you with a complete picture, we measured the power consumption of the systems (without a monitor) based on the tested CPUs. The CPUs worked in their default modes. The system configurations were the same as in the performance tests. We enabled Enhanced Intel SpeedStep and Cool’n’Quiet technologies. The CPUs were loaded with Prime95 25.5.

As might have been expected, the new 45nm Core 2 Duo E7200 is superior to its predecessor Core 2 Duo E4700 not only in sheer performance but also in power consumption. Wolfdale CPUs have proved they are more economical than their 65nm predecessors in our previous tests, so these numbers cannot surprise us. We can also note that the Core 2 Duo E7200 consumes less power than the Core 2 Duo E8200 which has a larger L2 cache and a slightly higher clock rate. It means that the Core 2 Duo E7200 is not only the most economical Wolfdale currently but also the most economical desktop dual-core processor in general! It needs less power than a Celeron E1200 under load.