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Differences What are the advantages of each

Front view of Intel Xeon L7555

Reasons to consider the
Intel Xeon L7555

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Much more l3 cache 24 MB vs 20 MB 20% more l3 cache; more data can be stored in the l3 cache for quick access later
Supports more CPUs in SMP configuration 8 vs 2 6 supports more CPUs in SMP configuration
More l3 cache per core 3 MB/core vs 2.5 MB/core 20% more l3 cache per core
Front view of Intel Xeon E5-2650

Reasons to consider the
Intel Xeon E5-2650

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Much better performance per watt 6.61 pt/W vs 2.79 pt/W More than 2.2x better performance per watt
Higher clock speed 2 GHz vs 1.87 GHz More than 5% higher clock speed
Higher turbo clock speed 2.8 GHz vs 2.53 GHz More than 10% higher turbo clock speed
Much better overclocked clock speed (Air) 2.55 GHz vs 1.87 GHz More than 35% better overclocked clock speed (Air)
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Mar, 2012 vs Mar, 2010 Release date over 1 years later
Better overclocked clock speed (Water) 2 GHz vs 1.87 GHz More than 5% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon L7555 vs E5-2650

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon L7555
16,824
Xeon E5-2650
5,977

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon L7555
1,386
Xeon E5-2650
1,701

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon L7555
114,400 MB/s
Xeon E5-2650
1,350,000 MB/s

Specifications Full list of technical specs

summary

Xeon L7555  vs
E5-2650 
Clock speed 1.87 GHz 2 GHz
Turbo clock speed 2.53 GHz 2.8 GHz
Cores Octa core Octa core
Socket type
LGA 1567
LGA 2011

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 95W 95W
Annual home energy cost 22.89 $/year 22.89 $/year
Annual commercial energy cost 83.22 $/year 83.22 $/year
Performance per watt 2.79 pt/W 6.61 pt/W
Typical power consumption 77.19W 77.19W

details

Xeon L7555  vs
E5-2650 
Threads 16 16
L2 cache 2 MB 2 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 24 MB 20 MB
L3 cache per core 3 MB/core 2.5 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 8 2
Voltage range 0.68 - 1.35V 0.6 - 1.35V
Operating temperature Unknown - 70°C Unknown - 77.4°C

overclocking

Overclocked clock speed 1.87 GHz 2.55 GHz
Overclocked clock speed (Water) 1.87 GHz 2 GHz
Overclocked clock speed (Air) 1.87 GHz 2.55 GHz

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

bus

Architecture QPI QPI
Number of links 4 2
Data rate 93,856 MB/s 64,000 MB/s
Transfer rate 5,860 MT/s 8,000 MT/s
Clock speed 2,930 MHz 4,000 MHz
Intel Xeon L7555
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Intel Xeon E5-2650
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