CPUBoss Review Our evaluation of 6400 vs 8350 among all 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

8.1

CPUBoss Score

Combination of all six facets

Winner
AMD FX 8350 

CPUBoss recommends the AMD FX 8350  based on its performance and value.

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Front view of AMD FX 8350

AMD FX 8350

CPUBoss Winner

Differences What are the advantages of each

Front view of Intel Core i5 6400

Reasons to consider the
Intel Core i5 6400

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Much newer manufacturing process 14 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much lower typical power consumption 52.81W vs 159.66W 3x lower typical power consumption
Newer Jul, 2015 vs Oct, 2012 Release date over 2 years later
Higher Maximum operating temperature 71 °C vs 61 °C More than 15% higher Maximum operating temperature
More l3 cache per core 1.5 MB/core vs 1 MB/core 50% more l3 cache per core
Better PassMark (Single core) score 1,830 vs 1,525 20% better PassMark (Single core) score
Much lower annual home energy cost 15.66 $/year vs 56.1 $/year 3.6x lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 159.62 $/year 2.8x lower annual commercial energy cost
Front view of AMD FX 8350

Reasons to consider the
AMD FX 8350

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Significantly higher clock speed 4 GHz vs 2.7 GHz Around 50% higher clock speed
Much better performance per dollar 13.29 pt/$ vs 1.53 pt/$ Around 8.8x better performance per dollar
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Significantly higher turbo clock speed 4.2 GHz vs 3.3 GHz More than 25% higher turbo clock speed
More cores 8 vs 4 Twice as many cores; run more applications at once
More threads 8 vs 4 Twice as many threads
Better overclocked clock speed (Air) 4.73 GHz vs 3.76 GHz More than 25% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 8.79 GHz vs 4.47 GHz More than 95% better overclocked clock speed (Water)
Better performance per watt 5.71 pt/W vs 3.83 pt/W Around 50% better performance per watt

Benchmarks Real world tests of Core i5 6400 vs FX 8350

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core i5 6400
14,361
FX 8350
11,483

GeekBench 3 (Single core) Data courtesy Primate Labs

Core i5 6400
4,499
FX 8350
2,193

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i5 6400
6,340 MB/s
FX 8350
2,470,000 MB/s

PassMark Data courtesy Passmark

Core i5 6400
6,687
FX 8350
9,134

PassMark (Single Core)

Core i5 6400
1,830
FX 8350
1,525

Specifications Full list of technical specs

summary

Core i5 6400  vs
FX 8350 
Clock speed 2.7 GHz 4 GHz
Turbo clock speed 3.3 GHz 4.2 GHz
Cores Quad core Octa core
Is unlocked No Yes

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
SSE4
XOP
AVX
SSE3
SSE
ABM
BMI1
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
TBM
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 125W
Annual home energy cost 15.66 $/year 56.1 $/year
Annual commercial energy cost 56.94 $/year 159.62 $/year
Performance per watt 3.83 pt/W 5.71 pt/W
Typical power consumption 52.81W 159.66W

details

Core i5 6400  vs
FX 8350 
Architecture x86-64 x86-64
Threads 4 8
L3 cache 6 MB 8 MB
L3 cache per core 1.5 MB/core 1 MB/core
Manufacture process 14 nm 32 nm
Max CPUs 1 1
Operating temperature Unknown - 71°C Unknown - 61°C

overclocking

Overclocked clock speed 3.76 GHz 4.73 GHz
Overclocked clock speed (Water) 4.47 GHz 8.79 GHz
Overclocked clock speed (Air) 3.76 GHz 4.73 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics 530 N/A
Number of displays supported 3 N/A
GPU clock speed 350 MHz N/A
Turbo clock speed 950 MHz N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3L-1600
Channels Dual Channel Dual Channel
Supports ECC No Yes
Maximum bandwidth 25,600 MB/s 29,866.66 MB/s
Intel Core i5 6400
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AMD FX 8350
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