CPUBoss Review Our evaluation of L5520 vs E3-1245 v2 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

8.2

CPUBoss Score

Combination of all six facets

Winner
Intel Xeon E3-1245 v2 

CPUBoss recommends the Intel Xeon E3-1245 v2  based on its performance, single-core performance and value.

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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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Supports more RAM 147,456 MB vs 33,556.48 MB Supports around 4.5x more RAM
Lower typical power consumption 48.75W vs 62.56W More than 20% lower typical power consumption
Much better overclocked clock speed (Water) 4.08 GHz vs 3.4 GHz More than 20% better overclocked clock speed (Water)
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Lower annual commercial energy cost 52.56 $/year vs 67.45 $/year More than 20% lower annual commercial energy cost
Lower annual home energy cost 14.45 $/year vs 18.55 $/year More than 20% lower annual home energy cost
Front view of Intel Xeon E3-1245 v2

Reasons to consider the
Intel Xeon E3-1245 v2

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Much higher clock speed 3.4 GHz vs 2.26 GHz More than 50% higher clock speed
Much higher turbo clock speed 3.8 GHz vs 2.48 GHz Around 55% higher turbo clock speed
Much better PassMark score 9,099 vs 4,387 More than 2x better PassMark score
Much better PassMark (Single core) score 1,998 vs 1,034 Around 95% better PassMark (Single core) score
Much better performance per watt 9.49 pt/W vs 2.66 pt/W More than 3.5x better performance per watt
Much better performance per dollar 2.44 pt/$ vs 0.29 pt/$ Around 8.5x better performance per dollar
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Newer manufacturing process 22 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly better overclocked clock speed (Air) 3.75 GHz vs 3.42 GHz Around 10% better overclocked clock speed (Air)
Newer May, 2012 vs Mar, 2009 Release date over 3 years later

Benchmarks Real world tests of Xeon L5520 vs E3-1245 v2

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
Xeon E3-1245 v2
2,520,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon L5520  vs
E3-1245 v2 
Clock speed 2.26 GHz 3.4 GHz
Turbo clock speed 2.48 GHz 3.8 GHz
Cores Quad core Quad core
Socket type
LGA 1366
LGA 1155

features

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

power consumption

TDP 60W 77W
Annual home energy cost 14.45 $/year 18.55 $/year
Annual commercial energy cost 52.56 $/year 67.45 $/year
Performance per watt 2.66 pt/W 9.49 pt/W
Typical power consumption 48.75W 62.56W

bus

Architecture QPI DMI
Number of links 2 1
Transfer rate 5,860 MT/s 5,000 MT/s

details

Xeon L5520  vs
E3-1245 v2 
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 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 45 nm 22 nm
Max CPUs 2 1
Clock multiplier 17 34

overclocking

Overclocked clock speed 3.42 GHz 3.75 GHz
Overclocked clock speed (Water) 4.08 GHz 3.4 GHz
Overclocked clock speed (Air) 3.42 GHz 3.75 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics P4000
Number of displays supported N/A 3
GPU clock speed N/A 650 MHz
Turbo clock speed N/A 1,250 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Triple Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 25,599.99 MB/s 25,600 MB/s
Maximum memory size 147,456 MB 33,556.48 MB
Intel Xeon L5520
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Intel Xeon E3-1245 v2
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