CPUBoss Review Our evaluation of L5520 vs 6366 HE 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

5.1

CPUBoss Score

Combination of all six facets

Winner
AMD Opteron 6366 HE 

CPUBoss recommends the AMD Opteron 6366 HE  based on its performance.

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VS

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 higher clock speed 2.26 GHz vs 1.8 GHz More than 25% higher clock speed
Lower typical power consumption 48.75W vs 69.06W Around 30% lower typical power consumption
Much more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Significantly better overclocked clock speed (Air) 3.42 GHz vs 3.1 GHz More than 10% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 4.08 GHz vs 3.1 GHz More than 30% better overclocked clock speed (Water)
Lower annual commercial energy cost 52.56 $/year vs 74.46 $/year Around 30% lower annual commercial energy cost
Lower annual home energy cost 14.45 $/year vs 20.48 $/year Around 30% lower annual home energy cost
Front view of AMD Opteron 6366 HE

Reasons to consider the
AMD Opteron 6366 HE

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Much more l2 cache 16 MB vs 1 MB 16x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l3 cache 16 MB vs 8 MB 2x more l3 cache; more data can be stored in the l3 cache for quick access later
Much higher turbo clock speed 3.1 GHz vs 2.48 GHz More than 25% higher turbo clock speed
Much better PassMark score 7,503 vs 4,387 More than 70% better PassMark score
More cores 16 vs 4 12 more cores; run more applications at once
More threads 16 vs 8 Twice as many threads
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
Supports more CPUs in SMP configuration 4 vs 2 Twice as many CPUs in SMP configuration
Newer Nov, 2012 vs Mar, 2009 Release date over 3 years later

Benchmarks Real world tests of Xeon L5520 vs Opteron 6366 HE

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon L5520  vs
Opteron 6366 HE 
Clock speed 2.26 GHz 1.8 GHz
Turbo clock speed 2.48 GHz 3.1 GHz
Cores Quad core 16 core
Socket type
LGA 1366
G34

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
ABM
BMI1
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
TBM
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 60W 85W
Annual home energy cost 14.45 $/year 20.48 $/year
Annual commercial energy cost 52.56 $/year 74.46 $/year
Performance per watt 2.66 pt/W 2.3 pt/W
Typical power consumption 48.75W 69.06W

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 6366 HE 
Threads 8 16
L2 cache 1 MB 16 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 8 MB 16 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 2 4
Clock multiplier 17 9
Operating temperature Unknown - 70°C Unknown - 65°C

overclocking

Overclocked clock speed 3.42 GHz 3.1 GHz
Overclocked clock speed (Water) 4.08 GHz 3.1 GHz
Overclocked clock speed (Air) 3.42 GHz 3.1 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 Quad Channel
Supports ECC Yes Yes
Maximum bandwidth 25,599.99 MB/s 25,600 MB/s
Intel Xeon L5520
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AMD Opteron 6366 HE
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