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Differences What are the advantages of each

Front view of Intel Core i5 2500K

Reasons to consider the
Intel Core i5 2500K

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Front view of AMD FX 8120

Reasons to consider the
AMD FX 8120

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CPUBoss is not aware of any important advantages of the AMD FX 8120 vs the Intel Core i5 2500K.

Benchmarks Real world tests of Core i5 2500K vs FX 8120

GeekBench 3 (Multi-core) Data courtesy Primate Labs

FX 8120
8,832

GeekBench 3 (Single core) Data courtesy Primate Labs

FX 8120
1,907

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i5 2500K
2,530,000 MB/s
FX 8120
2,200,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core i5 2500K
10,319
FX 8120
8,516

GeekBench (64-bit) Data courtesy Primate Labs

Core i5 2500K
11,186
FX 8120
10,115

GeekBench

Core i5 2500K
13,624
FX 8120
10,128

PassMark Data courtesy Passmark

FX 8120
6,587

PassMark (Single Core)

FX 8120
1,214

Reviews Word on the street

Specifications Full list of technical specs

summary

Core i5 2500K  vs
FX 8120 
Clock speed 3.3 GHz 3.1 GHz
Turbo clock speed 3.7 GHz 4 GHz
Cores Quad core Octa core
Socket type
LGA 1155
AM3+
Is unlocked Yes Yes

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
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

integrated graphics

GPU GPU None
Label Intel® HD Graphics 3000 N/A
Latest DirectX 10.1 N/A
Number of displays supported 2 N/A
GPU clock speed 850 MHz N/A
Turbo clock speed 1,100 MHz N/A
3DMark06 5,275 N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1866
DDR3-1333
DDR3-1066
DDR3
Channels Dual Channel Dual Channel
Supports ECC No Yes
Maximum bandwidth 21,333.32 MB/s 29,866.66 MB/s

details

Core i5 2500K  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 32 nm 32 nm
Transistor count 1,160,000,000 1,200,000,000
Max CPUs 1 1
Clock multiplier 33 20
Voltage range 1.2 - 1.5V 1.11 - 1.38V
Operating temperature 5 - 72.6°C Unknown - 61°C

overclocking

Overclock popularity 3,179 228
Overclock review score 5 5
Overclocked clock speed 4.98 GHz 4.47 GHz
Overclocked clock speed (Water) 4.88 GHz 4.73 GHz
PassMark (Overclocked) 5,433.6 2,844.6
Overclocked clock speed (Air) 4.98 GHz 4.47 GHz

power consumption

TDP 95W 125W
Annual home energy cost 41.29 $/year 46.87 $/year
Annual commercial energy cost 110.03 $/year 109.5 $/year
Performance per watt 6.79 pt/W 7.23 pt/W
Idle power consumption 73.4W 95W
Peak power consumption 125.6W 125W
Typical power consumption 112.55W 117.5W

bus

Architecture DMI HyperTransport 3.1
Number of links 1 1
Transfer rate 5,000 MT/s 5,200 MT/s
Intel Core i5 2500K
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AMD FX 8120
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