CPUBoss Review Our evaluation of L5640 vs L5506 among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

5.3

CPUBoss Score

Combination of all six facets

Winner
Intel Xeon L5640 

CPUBoss recommends the Intel Xeon L5640  based on its performance and value.

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VS

Differences What are the advantages of each

Front view of Intel Xeon L5640

Reasons to consider the
Intel Xeon L5640

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Much more l3 cache 12 MB vs 4 MB 3x more l3 cache; more data can be stored in the l3 cache for quick access later
Much more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much better PassMark score 6,451 vs 3,715 Around 75% better PassMark score
More cores 6 vs 4 2 more cores; run more applications at once
Much better performance per watt 10.46 pt/W vs 2.41 pt/W More than 4.2x better performance per watt
More threads 12 vs 4 Three times as many threads
Higher clock speed 2.26 GHz vs 2.13 GHz More than 5% higher clock speed
Much better overclocked clock speed (Air) 3.9 GHz vs 2.61 GHz Around 50% better overclocked clock speed (Air)
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Supports more RAM 294,912 MB vs 147,456 MB Supports 2x more RAM
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
More l2 cache per core 0.33 MB/core vs 0.25 MB/core Around 35% more l2 cache per core
Newer Mar, 2010 vs Mar, 2009 Release date 11 months later
Front view of Intel Xeon L5506

Reasons to consider the
Intel Xeon L5506

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Much better overclocked clock speed (Water) 3.48 GHz vs 2.27 GHz Around 55% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon L5640 vs L5506

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon L5640
16,852
Xeon L5506
8,274

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon L5640
1,918
Xeon L5506
2,485

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon L5640
1,250,000 MB/s
Xeon L5506
161.3 MB/s

PassMark Data courtesy Passmark

Xeon L5640
6,451
Xeon L5506
3,715

Specifications Full list of technical specs

summary

Xeon L5640  vs
L5506 
Clock speed 2.26 GHz 2.13 GHz
Cores Hexa core Quad core
Socket type
LGA 1366

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 60W 60W
Annual home energy cost 14.45 $/year 14.45 $/year
Annual commercial energy cost 52.56 $/year 52.56 $/year
Performance per watt 10.46 pt/W 2.41 pt/W
Typical power consumption 48.75W 48.75W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Triple Channel
Supports ECC Yes Yes
Maximum bandwidth 31,999.98 MB/s 19,200 MB/s
Maximum memory size 294,912 MB 147,456 MB

details

Xeon L5640  vs
L5506 
Architecture x86-64 x86-64
Threads 12 4
L2 cache 2 MB 1 MB
L2 cache per core 0.33 MB/core 0.25 MB/core
L3 cache 12 MB 4 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 2
Clock multiplier 17 16
Voltage range 0.75 - 1.35V 0.75 - 1.35V
Operating temperature Unknown - 69.4°C Unknown - 70°C

overclocking

Overclocked clock speed 3.9 GHz 2.61 GHz
Overclocked clock speed (Water) 2.27 GHz 3.48 GHz
Overclocked clock speed (Air) 3.9 GHz 2.61 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 2 2
Data rate 46,928 MB/s 38,400 MB/s
Transfer rate 5,860 MT/s 4,800 MT/s
Clock speed 2,930 MHz 2,400 MHz
Intel Xeon L5640
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Intel Xeon L5506
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