AMD Athlon II X4 640: 4-Cores On The Cheap
We'd like to cover a few final data points before bringing this article to a close. Throughout all of our benchmarking and testing, we monitored how much power our test systems consumed using a power meter. Our goal was to give you all an idea as to how much power each configuration used while idling and while under a heavy workload. Please keep in mind that we were testing total system power consumption at the outlet here, not just the power being drawn by the processors alone.
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The Athlon II X4 640 is a relatively power-friendly processor. Due to its higher clock speed, it consumed somewhat more power then the Athlon II X4 635 under load, but it was still one of the more power-friendly overall--only the Core i5-661 platform consumed less power.
