Thursday, April 14, 2011

Understand Intel's new server processor numbering scheme


Intel has once again decided to change the numbering scheme for its new Xeon-based processors. If you’re familiar with Intel’s Core i3, i5, i7 processor lines, you’ll recognize that the company uses similar numbering for the Xeon server processors.
Figure A is an example of Xeon processor numbering. Below the image, I explain the various elements in the numbering scheme.
Figure A

Brand: For the purposes of server processors, this will be Intel Xeon processor and simply identifies the overall brand - Xeon.
Product line:
Wayness, maximum CPUs in a node: How many sockets are supported in systems housing this processor? In this case, a single socket is supported.
Socket type: The socket type field identifies the capabilities of the processor socket type, such as memory speeds and other items tied to the socket. The higher this number (I assume it ranges from 1 to 9), the more capabilities inherent in the socket type.
Processor SKU: This is the processor part number. In my limited review of Intel’s current part numbers and the processor SKU field, it looks like Intel is being mostly consistent in part number with regard to clock speeds — at least within each product line. Here’s a look at what I’ve pieced together for the current line of E7 offerings. The E3 line carries different values. Because there is not official guidance from Intel that this field will be consistent, take this information for what it’s worth.

  • 03. 1733 MHz frequency/2400 MHz bus.
  • 07. 1867 MHz frequency/2400 MHz bus.
  • 20. 2000 MHz frequency/2900 MHz bus.
  • 30. 2133 MHz frequency/3200 MHz bus.
  • 37. 2667 MHz frequency/3200 MHz bus.
  • 50. 2000 MHz frequency/3200 MHz bus.
  • 60. 2267 MHz frequency/3200 MHz bus.
  • 67. 2133 MHz frequency/3200 MHz bus.
  • 70. 2400 MHz frequency/3200 MHz bus.
Power usage: In Figure A, you saw that the example has an L in the power usage area; this denotes that the part in question is a low power processor. When there is no L here, it’s not a low power processor.
Version: As new versions of a process are released, you’ll see this field populated with v2, v3, and so on. For a processor’s initial release, this field is blank; there is no v1 denotation.

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