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Intel Xeon L5609

Front view of Intel Xeon L5609
Front view of Intel Xeon E5620

Intel Xeon E5620

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Differences What are the advantages of each

Front view of Intel Xeon L5609

Reasons to consider the
Intel Xeon L5609

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Significantly lower typical power consumption 32.5W vs 65W 2x lower typical power consumption
Significantly lower annual commercial energy cost 35.04 $/year vs 70.08 $/year 2x lower annual commercial energy cost
Significantly lower annual home energy cost 9.64 $/year vs 19.27 $/year 2x lower annual home energy cost
Front view of Intel Xeon E5620

Reasons to consider the
Intel Xeon E5620

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Much higher clock speed 2.4 GHz vs 1.86 GHz Around 30% higher clock speed
Much higher turbo clock speed 2.66 GHz vs 1.86 GHz Around 45% higher turbo clock speed
Much better performance per watt 7.59 pt/W vs 3.43 pt/W Around 2.2x better performance per watt
Much better performance per dollar 2.18 pt/$ vs 0.31 pt/$ Around 7x better performance per dollar
Much better overclocked clock speed (Air) 3.75 GHz vs 2.83 GHz Around 35% better overclocked clock speed (Air)
More threads 8 vs 4 Twice as many threads
Much better overclocked clock speed (Water) 4.33 GHz vs 1.87 GHz More than 2.2x better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon L5609 vs E5620

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon L5609
7,865
Xeon E5620
14,086

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon L5609
2,423
Xeon E5620
1,898

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon L5609
1,510 MB/s
Xeon E5620
1,280,000 MB/s

Specifications Full list of technical specs

summary

 Xeon L5609  vs
E5620 
Clock speed 1.86 GHz 2.4 GHz
Turbo clock speed 1.86 GHz 2.66 GHz
Cores Quad core Quad core
Socket type
LGA 1366

features
Has a NX bit Yes Yes
Supports trusted computing Yes Yes
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 40W 80W
Annual home energy cost 9.64 $/year 19.27 $/year
Annual commercial energy cost 35.04 $/year 70.08 $/year
Performance per watt 3.43 pt/W 7.59 pt/W
Typical power consumption 32.5W 65W

memory controller
Memory controller Built-in Built-in
Memory type
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Triple Channel
Supports ECC Yes Yes
Maximum bandwidth 25,599.99 MB/s 25,599.99 MB/s
Maximum memory size 294,912 MB 294,912 MB

details

 Xeon L5609  vs
E5620 
Architecture x86-64 x86-64
Threads 4 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 12 MB 12 MB
L3 cache per core 3 MB/core 3 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 2
Clock multiplier 14 18
Voltage range 0.75 - 1.35V 0.75 - 1.35V
Operating temperature Unknown - 63.1°C Unknown - 77.6°C

overclocking
Overclocked clock speed 2.83 GHz 3.75 GHz
Overclocked clock speed (Water) 1.87 GHz 4.33 GHz
Overclocked clock speed (Air) 2.83 GHz 3.75 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 38,400 MB/s 46,928 MB/s
Transfer rate 4,800 MT/s 5,860 MT/s
Clock speed 2,400 MHz 2,930 MHz
Intel Xeon L5609
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Intel Xeon E5620
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