CPUBoss Review Our evaluation of 4670K vs 8120

Performance

Benchmark performance using all cores

Passmark, GeekBench (32-bit) and GeekBench (64-bit)

Single-core Performance

Individual core benchmark performance

Passmark (Single Core)

Overclocking

How much speed can you get out of the processor?

Passmark (Overclocked), Unlocked, Maximum Overclocked Clock Speed (Air) and 2 more

Value

Are you paying a premium for performance?

Performance Per Dollar

CPUBoss Score

Performance, Single-core Performance, Overclocking and Value

Winner
Intel Core i5 4670K 

CPUBoss recommends the Intel Core i5 4670K  based on its .

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VS

Intel Core i5 4670K

CPUBoss Winner
Front view of Intel Core i5 4670K

Differences What are the advantages of each

Front view of Intel Core i5 4670K

Reasons to consider the
Intel Core i5 4670K

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 3.4 GHz vs 3.1 GHz Around 10% higher clock speed
Much better PassMark (Single core) score 2,206 vs 1,213 More than 80% better PassMark (Single core) score
Significantly lower typical power consumption 68.25W vs 117.5W More than 40% lower typical power consumption
Much higher Maximum Operating Temperature 72.72 °C vs 61 °C Around 20% higher Maximum Operating Temperature
Significantly more l3 cache per core 1.5 MB/core vs 1 MB/core 50% more l3 cache per core
Better performance per watt 12.13 pt/W vs 5.44 pt/W Around 2.2x better performance per watt
Better PassMark (Overclocked) score 5,198.5 vs 2,844.6 Around 85% better PassMark (Overclocked) score
Better 3DMark11 physics score 6,830 vs 5,220 More than 30% better 3DMark11 physics score
Better geekbench (64-bit) score 12,725 vs 10,115 More than 25% better geekbench (64-bit) score
Much lower annual home energy cost 20.24 $/year vs 46.87 $/year 2.3x lower annual home energy cost
Better PassMark score 7,665 vs 6,585 More than 15% better PassMark score
Newer Apr, 2013 vs Oct, 2011 Release date over 1 years later
Better performance per dollar 5.91 pt/$ vs 4.86 pt/$ More than 20% better performance per dollar
Lower annual commercial energy cost 73.58 $/year vs 109.5 $/year Around 35% lower annual commercial energy cost
Front view of AMD FX 8120

Reasons to consider the
AMD FX 8120

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Much more l2 cache 8 MB vs 1 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
Higher turbo clock speed 4 GHz vs 3.8 GHz More than 5% higher turbo clock speed
More cores 8 vs 4 Twice as many cores; run more applications at once
More l3 cache 8 MB vs 6 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
More threads 8 vs 4 Twice as many threads
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Better overclocked clock speed (Water) 4.87 GHz vs 4.54 GHz More than 5% better overclocked clock speed (Water)

Benchmarks Real world tests of Core i5 4670K vs FX 8120

GeekBench (32-bit)

Core i5 4670K
11,573
FX 8120
8,516

GeekBench (64-bit)

Core i5 4670K
12,725
FX 8120
10,115

GeekBench

Core i5 4670K
12,725
FX 8120
10,128

3D Mark 11 (Physics)

FX 8120
5,220
Core i5 4670K FX 8120 @ community.futuremark.com

Passmark (Single Core)

FX 8120
1,213

Specifications Full list of technical specs

summary

Core i5 4670K  vs
FX 8120 
Clock speed 3.4 GHz 3.1 GHz
Turbo clock speed 3.8 GHz 4 GHz
Cores Quad core Octa core
Is unlocked Yes Yes
Is hyperthreaded No No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
F16C
MMX
SSE4
XOP
AVX
SSE3
EM64T
SSE
ABM
CLMUL
AMD64
SSE4.1
FMA4
FMA3
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 84W 125W
Annual home energy cost 20.24 $/year 46.87 $/year
Annual commercial energy cost 73.58 $/year 109.5 $/year
Performance per watt 12.13 pt/W 5.44 pt/W
Typical power consumption 68.25W 117.5W

bus

Architecture DMI 2.0 HyperTransport 3.1
Number of links 0 1
Transfer rate 5,000 MT/s 5,200 MT/s

details

Core i5 4670K  vs
FX 8120 
Architecture x86-64 x86-64
Threads 4 8
L2 cache 1 MB 8 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 6 MB 8 MB
L3 cache per core 1.5 MB/core 1 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 1
Operating temperature Unknown - 72.72°C Unknown - 61°C

overclocking

Overclock popularity 57 228
Overclocked clock speed 4.5 GHz 4.47 GHz
Overclocked clock speed (Water) 4.54 GHz 4.87 GHz
PassMark (Overclocked) 5,198.5 2,844.6
Overclocked clock speed (Air) 4.5 GHz 4.47 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics 4600 N/A
Number of displays supported 3 N/A
GPU clock speed 350 MHz N/A
Turbo clock speed 1,200 MHz N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3-1600
DDR3-1333
DDR3
Channels Dual Channel Dual Channel
Supports ECC No Yes
Maximum bandwidth 25,600 MB/s 29,866.66 MB/s
Intel Core i5 4670K
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AMD FX 8120
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