CPUBoss Review Our evaluation of 2520M vs 4005U among laptop 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

7.5

CPUBoss Score

Combination of all six facets

Winner
Intel Core i5 2520M 

CPUBoss recommends the Intel Core i5 2520M  based on its .

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VS

Differences What are the advantages of each

Front view of Intel Core i5 2520M

Reasons to consider the
Intel Core i5 2520M

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Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Front view of Intel Core i3 4005U

Reasons to consider the
Intel Core i3 4005U

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CPUBoss is not aware of any important advantages of the Core i3 4005U vs the Core i5 2520M.

Benchmarks Real world tests of Core i5 2520M vs i3 4005U

PCMark 8 Home 3.0 Accelerated Data courtesy FutureMark

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

Core i5 2520M
2,080,000 MB/s
Core i3 4005U
2,180,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i5 2520M  vs
i3 4005U 
Clock speed 2.5 GHz 1.7 GHz
Cores Dual core Dual core
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
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 35W 15W
Annual home energy cost 8.43 $/year 3.61 $/year
Performance per watt 20.44 pt/W 28.25 pt/W
Typical power consumption 28.44W 12.19W

bus

Architecture DMI DMI 2.0
Number of links 1 1
Transfer rate 5,000 MT/s 5,000 MT/s

details

Core i5 2520M  vs
i3 4005U 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 1 MB 0.5 MB
L2 cache per core 0.5 MB/core 0.25 MB/core
L3 cache 3 MB 3 MB
L3 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 32 nm 22 nm
Max CPUs 1 1
Clock multiplier 25 17

overclocking

Overclocked clock speed 3.05 GHz 1.81 GHz
Overclocked clock speed (Water) 2.5 GHz 1.7 GHz
Overclocked clock speed (Air) 3.05 GHz 1.81 GHz

integrated graphics

GPU GPU GPU
Label HD Graphics 3000 HD 4400 series
Number of displays supported 2 3
GPU clock speed 650 MHz 200 MHz
Turbo clock speed 1,300 MHz 950 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 21,333.32 MB/s 12,800 MB/s
Maximum memory size 16,384 MB 16,384 MB
Intel Core i5 2520M
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Intel Core i3 4005U
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