CPUBoss Review Our evaluation of E5-2420 vs 2520M 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

7.8

CPUBoss Score

Combination of all six facets

Winner
Intel Xeon E5-2420 

CPUBoss recommends the Intel Xeon E5-2420  based on its performance.

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VS

Differences What are the advantages of each

Front view of Intel Xeon E5-2420

Reasons to consider the
Intel Xeon E5-2420

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Significantly more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
More l3 cache 15 MB vs 3 MB 5x more l3 cache; more data can be stored in the l3 cache for quick access later
Significantly more l3 cache per core 2.5 MB/core vs 1.5 MB/core More than 65% more l3 cache per core
More cores 6 vs 2 Three times as many cores; run more applications at once
More threads 12 vs 4 Three times as many threads
Better PassMark score 8,570 vs 3,567 Around 2.5x better PassMark score
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Newer May, 2012 vs Feb, 2011 Release date over 1 years later
Supports more RAM 393,216 MB vs 16,384 MB Supports 24x more RAM
Front view of Intel Core i5 2520M

Reasons to consider the
Intel Core i5 2520M

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Much better geekbench 3 AES single core score 2,080,000 MB/s vs 985,150 MB/s More than 2x better geekbench 3 AES single core score
Significantly higher turbo clock speed 3.2 GHz vs 2.4 GHz Around 35% higher turbo clock speed
Higher clock speed 2.5 GHz vs 1.9 GHz More than 30% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much better performance per watt 20.48 pt/W vs 5.48 pt/W Around 3.8x better performance per watt
Significantly lower typical power consumption 28.44W vs 77.19W 2.7x lower typical power consumption
More l2 cache per core 0.5 MB/core vs 0.33 MB/core More than 50% more l2 cache per core
Better performance per dollar 2.87 pt/$ vs 2.6 pt/$ More than 10% better performance per dollar
Slightly better overclocked clock speed (Air) 3.06 GHz vs 2.36 GHz Around 30% better overclocked clock speed (Air)
Significantly lower annual home energy cost 8.43 $/year vs 22.89 $/year 2.7x lower annual home energy cost
Significantly lower annual commercial energy cost 30.66 $/year vs 83.22 $/year 2.7x lower annual commercial energy cost

Benchmarks Real world tests of Xeon E5-2420 vs Core i5 2520M

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 E5-2420
985,150 MB/s
Core i5 2520M
2,080,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E5-2420  vs
Core i5 2520M 
Clock speed 1.9 GHz 2.5 GHz
Turbo clock speed 2.4 GHz 3.2 GHz
Cores Hexa core Dual core
Is unlocked Yes No

features

Has a NX bit Yes Yes
Supports trusted computing Yes 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 95W 35W
Annual home energy cost 22.89 $/year 8.43 $/year
Annual commercial energy cost 83.22 $/year 30.66 $/year
Performance per watt 5.48 pt/W 20.48 pt/W
Typical power consumption 77.19W 28.44W

bus

Architecture QPI DMI
Number of links 1 1
Transfer rate 7,200 MT/s 5,000 MT/s

details

Xeon E5-2420  vs
Core i5 2520M 
Architecture x86-64 x86-64
Threads 12 4
L2 cache 2 MB 1 MB
L2 cache per core 0.33 MB/core 0.5 MB/core
L3 cache 15 MB 3 MB
L3 cache per core 2.5 MB/core 1.5 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 2 1

overclocking

Overclock popularity 0 11
Overclocked clock speed 2.36 GHz 3.06 GHz
Overclocked clock speed (Water) 1.9 GHz 2.5 GHz
Overclocked clock speed (Air) 2.36 GHz 3.06 GHz

integrated graphics

GPU None GPU
Label N/A HD Graphics 3000
Number of displays supported N/A 2
GPU clock speed N/A 650 MHz
Turbo clock speed N/A 1,300 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 31,999.98 MB/s 21,333.32 MB/s
Maximum memory size 393,216 MB 16,384 MB
Intel Xeon E5-2420
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Intel Core i5 2520M
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