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Differences What are the advantages of each

Front view of AMD A8 3870K

Reasons to consider the
AMD A8 3870K

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Much more l2 cache 4 MB vs 1 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Much better overclocked clock speed (Air) 3.56 GHz vs 2.9 GHz Around 25% better overclocked clock speed (Air)
Higher clock speed 3 GHz vs 2.9 GHz Around 5% higher clock speed
Much better overclocked clock speed (Water) 3.67 GHz vs 2.9 GHz More than 25% better overclocked clock speed (Water)
Front view of AMD A4 3450

Reasons to consider the
AMD A4 3450

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Much lower annual home energy cost 15.66 $/year vs 40.03 $/year 2.6x lower annual home energy cost
Much lower annual commercial energy cost 56.94 $/year vs 138.41 $/year 2.4x lower annual commercial energy cost

Features Key features of the A8 3870K  vs A4 3450 

clock speed

A8 3870K
3 GHz
A4 3450
2.9 GHz

L2 cache

A8 3870K
4 MB
A4 3450
1 MB

overclocked clock speed (air)

A8 3870K
3.56 GHz
A4 3450
2.9 GHz

overclocked clock speed (water)

A8 3870K
3.67 GHz
A4 3450
2.9 GHz

TDP

A8 3870K
100W
A4 3450
65W

Specifications Full list of technical specs

summary

A8 3870K  vs
A4 3450 
Clock speed 3 GHz 2.9 GHz
Cores Quad core Dual core
Socket type
FM1

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
AMD64
AMD-V
3DNow!
Supports dynamic frequency scaling Yes Yes

details

A8 3870K  vs
A4 3450 
Threads 4 2
L2 cache 4 MB 1 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.56 GHz 2.9 GHz
Overclocked clock speed (Water) 3.67 GHz 2.9 GHz
Overclocked clock speed (Air) 3.56 GHz 2.9 GHz

power consumption

TDP 100W 65W
Annual home energy cost 40.03 $/year 15.66 $/year
Annual commercial energy cost 138.41 $/year 56.94 $/year
Typical power consumption N/A 52.81W
AMD A8 3870K
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AMD A4 3450
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