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Differences What are the advantages of each

Front view of Intel Core i5 2550K

Reasons to consider the
Intel Core i5 2550K

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More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Higher Maximum operating temperature 72.6 °C vs 70 °C Around 5% higher Maximum operating temperature
Front view of AMD A6 7400K

Reasons to consider the
AMD A6 7400K

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Much lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
Higher clock speed 3.5 GHz vs 3.4 GHz Around 5% higher clock speed
Newer manufacturing process 28 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly lower annual home energy cost 15.66 $/year vs 22.89 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 83.22 $/year More than 30% lower annual commercial energy cost
Newer Jan, 2014 vs Jan, 2012 Release date over 2 years later

Benchmarks Real world tests of Core i5 2550K vs A6 7400K

GeekBench 3 (Multi-core) Data courtesy Primate Labs

A6 7400K
3,180

GeekBench 3 (Single core) Data courtesy Primate Labs

A6 7400K
2,081

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i5 2550K
2,640,000 MB/s
A6 7400K
1,910 MB/s

PassMark Data courtesy Passmark

A6 7400K
2,794

PassMark (Single Core)

A6 7400K
1,573

Specifications Full list of technical specs

summary

Core i5 2550K  vs
A6 7400K 
Clock speed 3.4 GHz 3.5 GHz
Cores Quad core Dual core
Socket type
LGA 1155
FM2+
Is unlocked Yes Yes

features

Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
F16C
MMX
SSE4
AVX
SSE3
SSE
BMI1
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
AMD-V
Supplemental SSE3
AES
TBM
Supports dynamic frequency scaling Yes Yes

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Maximum bandwidth 21,333.32 MB/s 29,866.66 MB/s

details

Core i5 2550K  vs
A6 7400K 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
Manufacture process 32 nm 28 nm
Max CPUs 1 1
Operating temperature Unknown - 72.6°C Unknown - 70°C

integrated graphics

GPU None GPU
Label N/A Radeon R5 series

power consumption

TDP 95W 65W
Annual home energy cost 22.89 $/year 15.66 $/year
Annual commercial energy cost 83.22 $/year 56.94 $/year
Performance per watt 11.5 pt/W 2.8 pt/W
Typical power consumption 77.19W 52.81W
Intel Core i5 2550K
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AMD A6 7400K
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