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Differences What are the advantages of each

Front view of Intel Core i3 2120

Reasons to consider the
Intel Core i3 2120

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Much higher clock speed 3.3 GHz vs 2.3 GHz Around 45% higher clock speed
Much more l3 cache 3 MB vs 0.5 MB 6x more l3 cache; more data can be stored in the l3 cache for quick access later
Much newer manufacturing process 32 nm vs 65 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 better PassMark score 3,901 vs 1,170 More than 3.2x better PassMark score
Much better PassMark (Single core) score 1,690 vs 692 Around 2.5x better PassMark (Single core) score
Much better geekbench 2 (32-bit) score 5,008 vs 1,720 Around 3x better geekbench 2 (32-bit) score
More threads 4 vs 2 Twice as many threads
Much more l3 cache per core 1.5 MB/core vs 0.25 MB/core 6x more l3 cache per core
Much better overclocked clock speed (Air) 3.42 GHz vs 3 GHz Around 15% better overclocked clock speed (Air)
Much better overclocked clock speed (Water) 3.37 GHz vs 2.58 GHz More than 30% better overclocked clock speed (Water)
Newer Jan, 2011 vs Apr, 2008 Release date over 2 years later
Front view of AMD Athlon X2 4450B

Reasons to consider the
AMD Athlon X2 4450B

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Much more l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much higher Maximum operating temperature 78 °C vs 69.1 °C Around 15% higher Maximum operating temperature
Significantly lower typical power consumption 36.56W vs 52.81W More than 30% lower typical power consumption
Significantly lower annual home energy cost 10.84 $/year vs 15.66 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 39.42 $/year vs 56.94 $/year More than 30% lower annual commercial energy cost

Benchmarks Real world tests of Core i3 2120 vs Athlon X2 4450B

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i3 2120
162,800 MB/s
Athlon X2 4450B
63,200 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i3 2120  vs
Athlon X2 4450B 
Clock speed 3.3 GHz 2.3 GHz
Cores Dual core Dual core
Socket type
LGA 1155
AM2+
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing No Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 45W
Annual home energy cost 15.66 $/year 10.84 $/year
Annual commercial energy cost 56.94 $/year 39.42 $/year
Performance per watt 2.79 pt/W 1.58 pt/W
Typical power consumption 52.81W 36.56W

details

Core i3 2120  vs
Athlon X2 4450B 
Architecture x86-64 x86-64
Threads 4 2
L2 cache 0.5 MB 1 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 3 MB 0.5 MB
L3 cache per core 1.5 MB/core 0.25 MB/core
Manufacture process 32 nm 65 nm
Max CPUs 1 1
Operating temperature Unknown - 69.1°C Unknown - 78°C

overclocking

Overclocked clock speed 3.42 GHz 3 GHz
Overclocked clock speed (Water) 3.37 GHz 2.58 GHz
Overclocked clock speed (Air) 3.42 GHz 3 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics 2000 N/A
Number of displays supported 2 N/A
GPU clock speed 850 MHz N/A
Turbo clock speed 1,100 MHz N/A
Intel Core i3 2120
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AMD Athlon X2 4450B
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