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Differences What are the advantages of each

Front view of AMD A6 A4 Micro-6400T

Reasons to consider the
AMD A6 A4 Micro-6400T

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Significantly more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much lower typical power consumption 3.66W vs 52.81W 14.4x lower typical power consumption
Newer manufacturing process 28 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More cores 4 vs 2 Twice as many cores; run more applications at once
Much lower annual home energy cost 1.08 $/year vs 15.66 $/year 14.4x lower annual home energy cost
Much lower annual commercial energy cost 3.94 $/year vs 56.94 $/year 14.4x lower annual commercial energy cost
More threads 4 vs 2 Twice as many threads
Front view of AMD A6 6400K

Reasons to consider the
AMD A6 6400K

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Much higher turbo clock speed 4.1 GHz vs 0 GHz Compared to all cpus, 4.1 GHz turbo clock speed is just OK
Much higher clock speed 3.9 GHz vs 1.6 GHz Around 2.5x higher clock speed
Much better 3DMark06 CPU score 25.1 vs 20.7 More than 20% better 3DMark06 CPU score
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Much higher GPU clock speed 800 MHz vs 0 MHz Compared to all cpus, 800 MHz GPU clock speed is just OK

Benchmarks Real world tests of A6 A4 Micro-6400T vs 6400K

3D Mark 06 (CPU)

Specifications Full list of technical specs

summary

A6 A4 Micro-6400T  vs
6400K 
Clock speed 1.6 GHz 3.9 GHz
Turbo clock speed 0 GHz 4.1 GHz
Cores Quad core Dual core
Is unlocked No Yes

features

Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
AVX
SSE3
SSE
BMI1
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
ABM
CVT16
AMD-V
Supplemental SSE3
AES
TBM

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3L-1333

details

A6 A4 Micro-6400T  vs
6400K 
Threads 4 2
L2 cache 2 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache None None
Manufacture process 28 nm 32 nm

integrated graphics

GPU GPU GPU
Label Radeon™ R3 Radeon™ HD 8470D
Latest DirectX 12.0 11.0
GPU clock speed 0 MHz 800 MHz

power consumption

TDP 4.5W 65W
Annual home energy cost 1.08 $/year 15.66 $/year
Annual commercial energy cost 3.94 $/year 56.94 $/year
Typical power consumption 3.66W 52.81W
AMD A6 A4 Micro-6400T
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AMD A6 6400K
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