Intel Core i5 4340M 

Released January, 2014
  • 2.9 GHz
  • Dual core
8 Out of 10

Moving to a 14nm process technology should give the GPU more thermal headroom and result in higher maximum clock speeds.
by Ryan-Shrout (Aug, 2014)
The core features were targeting a 2:1 ratio of performance to power, which would require new features and updates to improve performance by at least 2x while maintaining power levels.
by Ryan-Shrout (Aug, 2014)

CPUBoss Review Our evaluation of the Intel Core i5 4340M among laptop CPUs (over 15W)


Benchmark performance using all cores

Core i5 4340M
PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

Core i5 4340M
PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Core i5 4340M
Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

Core i5 4340M
CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Core i5 4340M
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more


Are you paying a premium for performance?

Core i5 4340M
Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more


CPUBoss Score

Combination of all six facets

Core i5 4340M

Benchmarks Real world tests of the Intel Core i5 4340M

3D Mark 06 (CPU)

Core i5 4340M

PassMark Data courtesy Passmark

Core i5 4340M

PassMark (Single Core)

Core i5 4340M

In The News From around the web

Though not a performance powerhouse, I think the first taste of Broadwell is delectable and provides vendors with an amazing option that balances the performance of Haswell with the power efficiency of Bay Trail and the Atom lineup.
Newly branded as the Core M line, Broadwell-Y is meant to target the market looking for similar performance of today's ultra-low voltage Haswell processors but with longer battery life and more efficient designs.
The majority of the die is dedicated to the graphics core while there are two CPU cores and right below is a shared 4 MB L3 cache which is shared across the graphics and processor cores.
Since Core M is the first 14nm device, it will meet the demands of next iteration of mobility devices boasting better performance and efficiency.

Short Bytes: Intel's Core M and Broadwell-Y SoC

by Jarred Walton |
Where previous Intel processors targeted laptops and desktops as the primary use case and then refined and adjusted the designs to get into lower power envelopes, with Broadwell Intel is putting the Y-series requirements center stage.
Shrinking the process technology from 22nm to 14nm can mean a lot of things, but the primary benefit this time appears to be smaller chip sizes and lower power requirements.

Intel previews Broadwell Core M

by Peter Scott |
Thanks to the new manufacturing process, Intel can essentially squeeze desktop-class performance into very thin form factors.
Products based on Broadwell Core M chips should start to appear towards the end of the year, but the silicon gods were not too kind to Intel.

Specifications Full list of technical specs


Clock speed 2.9 GHz
Turbo clock speed 3.6 GHz
Cores Dual core
Socket type rPGA 946B
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. AVX 2.0
  10. AVX
  11. SSE4
Supports dynamic frequency scaling Yes

memory controller

Memory controller Built-in
Memory type DDR3
Channels Dual Channel
Supports ECC No
Maximum bandwidth 12,800 MB/s
Maximum memory size 32,768 MB


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 22 nm
Max CPUs 1
Clock multiplier 29
Operating temperature Unknown - 100°C

integrated graphics

Label Intel® HD Graphics 4600
Number of displays supported 3
GPU clock speed 400 MHz
Turbo clock speed 1,250 MHz

power consumption

Annual home energy cost 8.91 $/year
Performance per watt 7.26 pt/W
Typical power consumption 30.06W


Architecture DMI 2.0
Transfer rate 5,000 MT/s
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