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Differences What are the advantages of each

Front view of Intel Xeon L5520

Reasons to consider the
Intel Xeon L5520

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Much better overclocked clock speed (Air) 3.42 GHz vs 3 GHz Around 15% better overclocked clock speed (Air)
More threads 8 vs 6 2 more threads
Significantly more l3 cache per core 2 MB/core vs 1.33 MB/core More than 50% more l3 cache per core
Much better overclocked clock speed (Water) 4.08 GHz vs 3 GHz More than 35% better overclocked clock speed (Water)
Front view of AMD Opteron 4332 HE

Reasons to consider the
AMD Opteron 4332 HE

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Much more l2 cache 6 MB vs 1 MB 6x more l2 cache; more data can be stored in the l2 cache for quick access later
Much higher clock speed 3 GHz vs 2.26 GHz Around 35% higher clock speed
Much higher turbo clock speed 3.7 GHz vs 2.48 GHz Around 50% higher turbo clock speed
More cores 6 vs 4 2 more cores; run more applications at once
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Newer Dec, 2012 vs Mar, 2009 Release date over 3 years later

Benchmarks Real world tests of Xeon L5520 vs Opteron 4332 HE

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon L5520
108,400 MB/s
Opteron 4332 HE
1,700 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon L5520  vs
Opteron 4332 HE 
Clock speed 2.26 GHz 3 GHz
Turbo clock speed 2.48 GHz 3.7 GHz
Cores Quad core Hexa core
Socket type
LGA 1366
C32

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
AVX
SSE3
SSE
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 60W 65W
Annual home energy cost 14.45 $/year 15.66 $/year
Annual commercial energy cost 52.56 $/year 56.94 $/year
Performance per watt 2.66 pt/W 1.62 pt/W
Typical power consumption 48.75W 52.81W

bus

Architecture QPI HyperTransport 3.0
Transfer rate 5,860 MT/s 6,400 MT/s
Clock speed 2,930 MHz 3,200 MHz

details

Xeon L5520  vs
Opteron 4332 HE 
Threads 8 6
L2 cache 1 MB 6 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 1.33 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 2 2
Clock multiplier 17 15
Operating temperature Unknown - 70°C Unknown - 68°C

overclocking

Overclocked clock speed 3.42 GHz 3 GHz
Overclocked clock speed (Water) 4.08 GHz 3 GHz
Overclocked clock speed (Air) 3.42 GHz 3 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

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 25,599.99 MB/s 12,800 MB/s
Intel Xeon L5520
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AMD Opteron 4332 HE
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