Intel Core i5 5257U 

Released January, 2015
  • 2.7 GHz
  • Dual core

Benchmarks Real world tests of the Intel Core i5 5257U

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i5 5257U
54.21 mHash/s
Core i5 4278U
20.18 mHash/s
Core i7 5557U
34.15 mHash/s

CompuBench 1.5 (Face detection)

Core i5 5257U
20.24 mPixels/s
Core i7 5557U
13.19 mPixels/s
Core i5 4278U
15.94 mPixels/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i5 5257U
1.53 fps
Core i7 5557U
-1 fps
Core i5 4278U
1.24 fps

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i5 5257U

GeekBench 3 (Single core) Data courtesy Primate Labs

Core i5 5257U

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i5 5257U
3,910,000 MB/s
Core i7 5557U
4,160,000 MB/s
Core i5 4278U
3,900,000 MB/s

PassMark Data courtesy Passmark

Core i5 5257U

PassMark (Single Core)

Core i5 5257U

Specifications Full list of technical specs


Clock speed 2.7 GHz
Turbo clock speed 3.1 GHz
Cores Dual core
Is unlocked No


Has a NX bit Yes
Supports trusted computing No
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

power consumption

Annual home energy cost 6.75 $/year
Performance per watt 37.62 pt/W
Typical power consumption 22.75W


Architecture DMI 2.0
Transfer rate 5,000 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 14 nm
Max CPUs 1


Overclocked clock speed 3.1 GHz
Overclocked clock speed (Water) 2.7 GHz
Overclocked clock speed (Air) 3.1 GHz

integrated graphics

Label Intel® Iris™ Graphics 6100
Number of displays supported 3
GPU clock speed 300 MHz
Turbo clock speed 1,050 MHz

memory controller

Memory controller Built-in
Memory type
  1. DDR3-1600
  2. DDR3
Channels Dual Channel
Maximum bandwidth 25,600 MB/s
Maximum memory size 16,384 MB
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