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Differences What are the advantages of each

Front view of Intel Core i3 2100

Reasons to consider the
Intel Core i3 2100

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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 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Higher clock speed 3.1 GHz vs 3 GHz Around 5% higher clock speed
Better overclocked clock speed (Water) 3.23 GHz vs 3 GHz Around 10% better overclocked clock speed (Water)
Front view of AMD Phenom II X3 B75

Reasons to consider the
AMD Phenom II X3 B75

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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 3 vs 2 1 more cores; run more applications at once
Much more l2 cache per core 0.67 MB/core vs 0.25 MB/core Around 2.8x more l2 cache per core
Much better overclocked clock speed (Air) 4.2 GHz vs 3.23 GHz More than 30% better overclocked clock speed (Air)
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Significantly lower typical power consumption 77.19W vs 98.28W More than 20% lower typical power consumption
Significantly higher Maximum operating temperature 73 °C vs 69.1 °C More than 5% higher Maximum operating temperature
Much lower annual home energy cost 22.89 $/year vs 37.88 $/year Around 40% lower annual home energy cost
Lower annual commercial energy cost 83.22 $/year vs 93.47 $/year More than 10% lower annual commercial energy cost

Benchmarks Real world tests of Core i3 2100 vs Phenom II X3 B75

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 2100
153,100 MB/s
Phenom II X3 B75
120,500 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core i3 2100  vs
Phenom II X3 B75 
Clock speed 3.1 GHz 3 GHz
Cores Dual core Tri core
Socket type
LGA 1155
AM3
Is unlocked No No

features

Has a NX bit Yes Yes
Supports trusted computing No 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

power consumption

TDP 65W 95W
Annual home energy cost 37.88 $/year 22.89 $/year
Annual commercial energy cost 93.47 $/year 83.22 $/year
Performance per watt 1.41 pt/W 1.46 pt/W
Typical power consumption 98.28W 77.19W

details

Core i3 2100  vs
Phenom II X3 B75 
Architecture x86-64 x86-64
Threads 4 3
L2 cache 0.5 MB 2 MB
L2 cache per core 0.25 MB/core 0.67 MB/core
L3 cache 3 MB 6 MB
L3 cache per core 1.5 MB/core 2 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 1 1
Operating temperature Unknown - 69.1°C Unknown - 73°C

overclocking

Overclocked clock speed 3.23 GHz 4.2 GHz
Overclocked clock speed (Water) 3.23 GHz 3 GHz
Overclocked clock speed (Air) 3.23 GHz 4.2 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 2100
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AMD Phenom II X3 B75
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