The Inq takes time to explain the Intel server processor numbering scheme.
There is a kind of logic to the stock keeping units (SKUs) or at least that's what Intel believes. Take, for example, the X5355. What the heck does this combo mean? Bear with us, while we toss aside our Soduko puzzle to tease this out.
The letter "X" in front of a processor number means it's a performance optimised processor. An "E" means its a mainstream or tack optimised microprocessor. An "L" means it's either ultra dense or low voltage.
The first number describes which platform a chip belongs to. "9" stands for Itanium 9000s, "7" stands for Xeon MP 7000s, "5" stands for Xeon DP 5000s, and "3" stands for Xeon UP chips in the 3000 sequence...