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Differences What are the advantages of each

Front view of Intel Xeon L5630

Reasons to consider the
Intel Xeon L5630

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Much more l3 cache 12 MB vs 8 MB 50% more l3 cache; more data can be stored in the l3 cache for quick access later
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 3 MB/core vs 2 MB/core 50% more l3 cache per core
Lower typical power consumption 32.5W vs 48.75W Around 35% lower typical power consumption
Significantly better overclocked clock speed (Air) 3.66 GHz vs 3.42 GHz More than 5% better overclocked clock speed (Air)
Lower annual commercial energy cost 35.04 $/year vs 52.56 $/year Around 35% lower annual commercial energy cost
Lower annual home energy cost 9.64 $/year vs 14.45 $/year Around 35% lower annual home energy cost
Newer Mar, 2010 vs Mar, 2009 Release date 11 months later
Front view of Intel Xeon L5520

Reasons to consider the
Intel Xeon L5520

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Higher clock speed 2.26 GHz vs 2.13 GHz More than 5% higher clock speed
Slightly higher turbo clock speed 2.48 GHz vs 2.4 GHz Around 5% higher turbo clock speed
Much better overclocked clock speed (Water) 4.08 GHz vs 3.48 GHz More than 15% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon L5630 vs L5520

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Xeon L5630
Xeon L5520

GeekBench 3 (Single core) Data courtesy Primate Labs

Xeon L5630
Xeon L5520

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon L5630
51.5 MB/s
Xeon L5520
108,400 MB/s

PassMark Data courtesy Passmark

Xeon L5630
Xeon L5520

PassMark (Single Core)

Specifications Full list of technical specs


Xeon L5630  vs
Clock speed 2.13 GHz 2.26 GHz
Turbo clock speed 2.4 GHz 2.48 GHz
Cores Quad core Quad core
Socket type
LGA 1366


Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 40W 60W
Annual home energy cost 9.64 $/year 14.45 $/year
Annual commercial energy cost 35.04 $/year 52.56 $/year
Performance per watt 1.92 pt/W 2.66 pt/W
Typical power consumption 32.5W 48.75W

memory controller

Memory controller Built-in Built-in
Memory type
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 147,456 MB


Xeon L5630  vs
Architecture x86-64 x86-64
Threads 8 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 12 MB 8 MB
L3 cache per core 3 MB/core 2 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 2 2
Clock multiplier 16 17
Voltage range 0.75 - 1.35V 0.75 - 1.35V
Operating temperature Unknown - 63.1°C Unknown - 70°C


Overclocked clock speed 3.66 GHz 3.42 GHz
Overclocked clock speed (Water) 3.48 GHz 4.08 GHz
Overclocked clock speed (Air) 3.66 GHz 3.42 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


Architecture QPI QPI
Number of links 2 2
Data rate 46,928 MB/s 46,928 MB/s
Transfer rate 5,860 MT/s 5,860 MT/s
Clock speed 2,930 MHz 2,930 MHz
Intel Xeon L5630
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Intel Xeon L5520
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