Intel Preparing Xeon Phi Series Co-Processors

Intel's product database has been updated, and it now shows five new Xeon Phi co-processors. These five are followups of the original Xeon 5110P, SE10P, and SE10X models. Two lighter Xeon Phi 3100 parts have shown up: a mid-end part, the 5120D, and two premium 7100 series parts.

For those who don't know what a co-processor is, in the case of these Xeon Phi co-processors, it is simply an x86 based processor slammed onto a PCIe 8x expansion card. The purpose of them is to increase processing power for desktops and servers, specifically for tasks that have to be executed by a processor, not a graphics card.

The Xeon Phi co-processors are quite different from the standard CPUs we know. They feature more than 50 processing cores and have 8 GB of GDDR5 memory aboard the PCB. Just like the Ivy Bridge parts, they are baked on a 22 nm lithography. Due to the onboard memory in combination with an x86 processor, the device can even work as a fully independent computer, with tasks coming in through the PCIe interface, and only sent out and returned once completed.

ModelCoresCPU Clock
L2-cacheGDDR5 Speed
SE10P/X611.10 GHz30.5 MB5.5 GHz8 GB512 bit1073 GFlops300W
5110P601.05 GHz30 MB5.0 GHz8 GB512 bit1011 GFlops225W
5120D601.05 GHz30 MB5.5 GHz8 GB512 bit1011 GFlops245W
7120P/X611.25 GHz30.5 MB5.5 GHz8 GB512 bit1220 GFlops300W
3120A/P571.10 GHz28.5 MB5.0 GHz6 GB384 bit1003 GFlops300W

* Table courtesy of

The main differences between the current Xeon Phi co-processors and the previous ones are the Xeon CPUs that are aboard, as well as the cooling blocks. Any model with the extension "*P" in the name has the passively cooled cooler, while others have the active drum cooler. The "*D" will not ship with a cooler.

A rumor indicates that the new Xeon Phi co-processors might even still hit the market this month, but it remains unverified.

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  • marshal11
    Seems like pretty cool stuff. Reminds me of the old Slot 1 Pentium IIs. I still have my old Pentium II 266MHz laying around somewhere as an Antique :)
  • danwat1234
    An official seti@home credit increaser board?
    Wow it's amazing that this is real. You obviously need software to communicate with this SOC board.
    Why use so many low clocked cores when you could use fewer higher clocked cores and save silicon?
  • teknic111
    What practice application will this serve in a desktop that a video card cannot do?