Intel Core i5 520M 

Released January, 2010
  • 2.4 GHz
  • Dual core
7.4 Out of 10

This is in direct opposition to the sleek, razor-thin Core M devices that Intel has previously demoed.
by Joel-Hruska (Oct, 2014)
There’s no substitute for shipping hardware, and that’s why a great many eyes have turned to Lenovo’s Yoga 3 Pro — the first shipping device with Broadwell inside.
by Joel-Hruska (Oct, 2014)

CPUBoss Review Our evaluation of the Intel Core i5 520M among laptop CPUs (over 15W)


Benchmark performance using all cores

Core i5 520M
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Core i5 520M
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Core i5 520M
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Core i5 520M
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Core i5 520M
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more


Are you paying a premium for performance?

Core i5 520M
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more


CPUBoss Score

Combination of all six facets

Core i5 520M

Benchmarks Real world tests of the Intel Core i5 520M

PCMark 8 Home 3.0 Accelerated Data courtesy FutureMark

Core i5 520M

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i5 520M
Core i7 620M

GeekBench 3 (Single core) Data courtesy Primate Labs

Core i5 520M
Core i7 620M

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i5 520M
1,340,000 MB/s
Core i5 2520M
2,080,000 MB/s
Core i7 620M
1,530,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i5 520M
Core i7 620M

GeekBench (64-bit) Data courtesy Primate Labs

Core i5 520M
Core i7 620M

PassMark Data courtesy Passmark

Core i5 520M
Core i7 620M

PassMark (Single Core)

Core i5 520M
Core i7 620M

In The News From around the web


Intel’s erratic Core M performance leaves an opening for AMD

by Joel Hruska |
Instead of absolutely guaranteeing that a chip will reach a certain speed at a given temperature or power consumption level, simply establish that frequency range as a “maybe” and push the issue off on OEMs or enthusiasts to deal with.
In several cases, the gaps in both CPU and GPU workloads are quite significant — and favor the slower processor.

More Intel Core M Coming Q4

by Ian Cutress |
All new CPUs are slated for a Q4 launch, which would mean that they might become available for end users in products on the shelf sometime in Q1 2015.
These initial CPUs should be properly available to the public in Q4 in devices such as the Lenovo Yoga 3 Pro using the Core M-5Y70.
The fact that Chrome runs poorly — markedly worse than Internet Explorer — could be indicative of GPU driver issues, while the 3.5W TDP target Lenovo apparently locked in would explain the throttling behavior.
It’s possible that these weak performance figures and throttling issues are either caused by Intel drivers or by overly aggressive chip positioning.

Specifications Full list of technical specs


Clock speed 2.4 GHz
Turbo clock speed 2.93 GHz
Cores Dual core
Socket type
  1. BGA 1288
  2. rPGA 988A
Is unlocked No


Has a NX bit Yes
Supports trusted computing Yes
Has virtualization support Yes
Instruction set extensions
  1. MMX
  2. AES
  3. SSE
  4. SSE2
  5. SSE4.1
  6. SSE3
  7. Supplemental SSE3
  8. SSE4.2
  9. SSE4
Supports dynamic frequency scaling Yes

power consumption

Annual home energy cost 8.43 $/year
Performance per watt 13.79 pt/W
Typical power consumption 28.44W


Architecture DMI
Transfer rate 2,500 MT/s


Architecture x86-64
Threads 4 threads
L2 cache 0.5 MB
L2 cache per core 0.25 MB/core
L3 cache 3 MB
L3 cache per core 1.5 MB/core
Manufacture process 32 nm
Transistor count 382,000,000
Max CPUs 1
Clock multiplier 18


Overclocked clock speed 2.86 GHz
Overclocked clock speed (Water) 2.4 GHz
PassMark (Overclocked) 1,455.5
Overclocked clock speed (Air) 2.86 GHz

integrated graphics

Label Intel® HD Graphics
Number of displays supported 2
GPU clock speed 500 MHz
Turbo clock speed 766 MHz

memory controller

Memory controller Built-in
Memory type
  1. DDR3-1066
  2. DDR3-800
  3. DDR3
Channels Dual Channel
Supports ECC No
Maximum bandwidth 17,066.66 MB/s
Maximum memory size 8,499.2 MB
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Showing 1 comment.
A nice processor for the price, I got this in my 6450b which can be found now for about $200, It is definitely a very fast processor for a a price that is great.
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