Intel® Processor Numbers
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Intel® Processor Numbers

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Intel® Core™ Processor Family
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Pentium® Processors
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Celeron® Processors
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Intel® Xeon® Processors
| Itanium® Processors

Intel® Xeon® processor

The breakthrough performance, energy efficiency, and reliability of Intel® Xeon® processor-based server systems make them the ideal choice for all of your data-demanding or standard enterprise infrastructure applications.

 
Processor
Number¹		 Architecture Cache Clock
Speed		 Front
Side
Bus		 Intel® QPI System
Type		 Power Number of Cores
W5580 45 nm 8MB 3.20 GHz NA 6.40 GT/s DP 130W 4
X5570 45 nm 8MB 2.93 GHz NA 6.40 GT/s DP 95W 4
X5560 45 nm 8MB 2.80 GHz NA 6.40 GT/s DP 95W 4
X5550 45 nm 8MB 2.66 GHz NA 6.40 GT/s DP 95W 4
E5540 45 nm 8MB 2.53 GHz NA 5.86 GT/s DP 80W 4
E5530 45 nm 8MB 2.40 GHz NA 5.86 GT/s DP 80W 4
E5520 45 nm 8MB 2.26 GHz NA 5.86 GT/s DP 80W 4
L5520 45 nm 8MB 2.26 GHz NA 5.86 GT/s DP 60W 4
E5506 45 nm 4MB 2.13 GHz NA 4.80 GT/s DP 80W 4
L5506 45 nm 4MB 2.13 GHz NA 4.80 GT/s DP 60W 4
E5504 45 nm 4MB 2.00 GHz NA 4.80 GT/s DP 80W 4
E5502 45 nm 4MB 1.86 GHz NA 4.80 GT/s DP 80W 2
X5492 45 nm 12MB 3.40 GHz 1600 MHz NA DP 150W 4
X5482 45 nm 12MB 3.20 GHz 1600 MHz NA DP 120W 4
X5472 45 nm 12MB 3.00 GHz 1600 MHz NA DP 120W 4
E5472 45 nm 12MB 3.00 GHz 1600 MHz NA DP 80W 4
X5470 45 nm 12MB 3.33 GHz 1333 MHz NA DP 120W 4
E5462 45 nm 12MB 2.80 GHz 1600 MHz NA DP 80W 4
X5460 45 nm 12MB 3.16 GHz 1333 MHz NA DP 120W 4
X5450 45 nm 12MB 3.00 GHz 1333 MHz NA DP 120W 4
E5450 45 nm 12MB 3.00 GHz 1333 MHz NA DP 80W 4
E5440 45 nm 12MB 2.83 GHz 1333 MHz NA DP 80W 4
L5430 45 nm 12MB 2.66 GHz 1333 MHz NA DP 50W 4
E5430 45 nm 12MB 2.66 GHz 1333 MHz NA DP 80W 4
L5420 45 nm 12MB 2.50 GHz 1333 MHz NA DP 50W 4
E5420 45 nm 12MB 2.50 GHz 1333 MHz NA DP 80W 4
L5410 45 nm 12MB 2.33 GHz 1333 MHz NA DP 50W 4
E5410 45 nm 12MB 2.33 GHz 1333 MHz NA DP 80W 4
E5405 45 nm 12MB 2.00 GHz 1333 MHz NA DP 80W 4
X5272 45 nm 6MB 3.40 GHz 1600 MHz NA DP 80W 2
X5270 45 nm 6MB 3.50 GHz 1333 MHz NA DP 80W 2
X5260 45 nm 6MB 3.33 GHz 1333 MHz NA DP 80W 2
L5240 45 nm 6MB 3.00 GHz 1333 MHz NA DP 40W 2
E5205 45 nm 6MB 1.86 GHz 1066 MHz NA DP 65W 2
X5365 65 nm 8MB 3.00 GHz 1333 MHz NA DP 120W 2
X5355 65 nm 8MB 2.66 GHz 1333 MHz NA DP 120W 2
L5335 65 nm 8MB 2.00 GHz 1333 MHz NA DP 50W 2
L5320 65 nm 8MB 1.86 GHz 1066 MHz NA DP 50W 2
L5310 65 nm 8MB 1.60 GHz 1066 MHz NA DP 50W 2
E5345 65 nm 8MB 2.33 GHz 1333 MHz NA DP 80W 2
E5335 65 nm 8MB 2.00 GHz 1333 MHz NA DP 80W 2
E5320 65 nm 8MB 1.86 GHz 1066 MHz NA DP 80W 2
E5310 65 nm 8MB 1.60 GHz 1066 MHz NA DP 80W 2
5160 65 nm 4MB 3.00 GHz 1333 MHz NA DP 80W 2
5150 65 nm 4MB 2.667 GHz 1333 MHz NA DP 65W 2
5148 65 nm 4MB 2.333 GHz 1333 MHz NA DP 40W 2
5140 65 nm 4MB 2.333 GHz 1333 MHz NA DP 65W 2
5130 65 nm 4MB 2.00 GHz 1333 MHz NA DP 65W 2
5120 65 nm 4MB 1.866 GHz 1066 MHz NA DP 65W 2
5110 65 nm 4MB 1.60 GHz 1066 MHz NA DP 65W 2
5080 65 nm 4MB 3.73 GHz 1066 MHz NA DP 130W 2
5063 65 nm 4MB 3.20 GHz 1066 MHz NA DP 95W 2
5060 65 nm 4MB 3.20 GHz 1066 MHz NA DP 130W 2
5050 65 nm 4MB 3.00 GHz 667 MHz NA DP 95W 2
5030 65 nm 4MB 2.67 GHz 667 MHz NA DP 95W 2

¹ Intel® processor numbers are not a measure of performance. Processor numbers differentiate features within each processor family, not across different processor families. See www.intel.com/products/processor_number/eng/ for details.