Toms just copied from some early guesses and mixed it with their own. I got L5520 so I know its 8MB. And there is no such thing as CPUs for workstation and others for servers with Xeons. They are all the same. Just like in the Macpro. The 3500 series are used in single socket servers too.
Toms is just plain horrible. Its only a tad better than theinq and fudzilla. Also dont count on any CPU using DDR3-800
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