Intel ships a 4.4GHz Xeon X5698

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CPUOver at World's keen eyes spotted that Intel has quietly been shipping a Xeon X5698 with a frequency of 4.4GHz:

In the middle of last year, when Intel produced pre-production parts for the next refresh of Xeon 5600-series, they also made several quite interesting Xeon samples. The most distinguishing feature of these chips was very high clock frequency. Even the slowest Xeon microprocessor from that group was clocked at 4 GHz, and the fastest one reached 4.66 GHz. One of these samples made into production, and started shipping earlier this year. The processor was released as Xeon X5698, and, at 4.4 GHz, it's the fastest Intel production CPU ever.

Intel Xeon X5698 is built on Westemere microarchitecture, and, with a couple of notable differences, shares many features with other Xeon 5600 chips. One of the differences, extremely high core frequency, we already mentioned above. This model has only two active CPU cores, and we believe that 4 other cores on the die are disabled. The processor comes with 12 MB L3 cache, HyperThreading, and works in socket 1366 motherboards. Intel X5698 has OEM part number AT80614007314AA, and S-spec number SLC32. We suspect that this SKU will be shipped only in OEM systems.

For the sake of history, we included information on all "special" Xeon samples, produced in 2010, in the table below:

OEM part number

QDF number



L3 cache

AT80614007308AA Q5BY 4.13 GHz 12MB
AT80614007305AA Q5BX 4 GHz 12MB
AT80614007314AA Q5C1 X5698 4.4 GHz 12MB
AT80614007317AA Q5C2 4.53 GHz 12MB
AT80614007320AA Q5C3 4.66 GHz 12MB
AT80614007311AA Q5BZ 4.26 GHz 12MB


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