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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 more l3 cache 3 MB vs 0 MB Compared to all cpus, 3 MB l3 cache is just OK
Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l3 cache per core 1.5 MB/core vs 0 MB/core Compared to all cpus, 1.5 MB/core l3 cache per core is just OK
Much lower typical power consumption 52.81W vs 77.19W More than 30% lower typical power consumption
Significantly lower annual home energy cost 15.66 $/year vs 22.89 $/year More than 30% lower annual home energy cost
Significantly lower annual commercial energy cost 56.94 $/year vs 83.22 $/year More than 30% lower annual commercial energy cost
Front view of AMD Phenom X4 B99

Reasons to consider the
AMD Phenom X4 B99

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Much more l2 cache 2 MB vs 0.5 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
Much better overclocked clock speed (Air) 4.44 GHz vs 3.42 GHz Around 30% better overclocked clock speed (Air)
Much more l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core

Benchmarks Real world tests of Core i3 2120 vs Phenom X4 B99

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
Phenom X4 B99
131.8 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i3 2120  vs
Phenom X4 B99 
Clock speed 3.3 GHz 3.3 GHz
Cores Dual core Quad core
Is unlocked No No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

details

Core i3 2120  vs
Phenom X4 B99 
Threads 4 4
L2 cache 0.5 MB 2 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 3 MB 0 MB
L3 cache per core 1.5 MB/core 0 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.42 GHz 4.44 GHz
Overclocked clock speed (Water) 3.37 GHz 3.3 GHz
Overclocked clock speed (Air) 3.42 GHz 4.44 GHz

power consumption

TDP 65W 95W
Annual home energy cost 15.66 $/year 22.89 $/year
Annual commercial energy cost 56.94 $/year 83.22 $/year
Performance per watt 2.79 pt/W 1.25 pt/W
Typical power consumption 52.81W 77.19W
Intel Core i3 2120
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AMD Phenom X4 B99
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