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Differences What are the advantages of each

Front view of Intel Core2 Duo T8100

Reasons to consider the
Intel Core2 Duo T8100

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Much better geekbench 3 AES single core score 85,900 MB/s vs 85.5 MB/s Around 1004.8x better geekbench 3 AES single core score
Much newer manufacturing process 45 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l2 cache 3 MB vs 1 MB 3x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 1.5 MB/core vs 0.5 MB/core 3x more l2 cache per core
Significantly lower typical power consumption 28.44W vs 52.81W More than 45% lower typical power consumption
Better performance per watt 2.49 pt/W vs 0.89 pt/W More than 2.8x better performance per watt
Significantly lower annual home energy cost 8.43 $/year vs 15.66 $/year More than 45% lower annual home energy cost
Significantly lower annual commercial energy cost 30.66 $/year vs 56.94 $/year More than 45% lower annual commercial energy cost
Front view of AMD Athlon 64 X2 4400+

Reasons to consider the
AMD Athlon 64 X2 4400+

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Higher clock speed 2.3 GHz vs 2.1 GHz Around 10% higher clock speed
Better overclocked clock speed (Air) 2.75 GHz vs 2.47 GHz More than 10% better overclocked clock speed (Air)

Benchmarks Real world tests of Core2 Duo T8100 vs Athlon 64 X2 4400+

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

Core2 Duo T8100
85,900 MB/s
Athlon 64 X2 4400+
85.5 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo T8100  vs
Athlon 64 X2 4400+ 
Clock speed 2.1 GHz 2.3 GHz
Cores Dual core Dual core
Socket type
479
P
AM2
939

features

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

details

Core2 Duo T8100  vs
Athlon 64 X2 4400+ 
Threads 2 2
L2 cache 3 MB 1 MB
L2 cache per core 1.5 MB/core 0.5 MB/core
Manufacture process 45 nm 90 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.47 GHz 2.75 GHz
Overclocked clock speed (Water) 3.1 GHz 3.13 GHz
Overclocked clock speed (Air) 2.47 GHz 2.75 GHz

power consumption

TDP 35W 65W
Annual home energy cost 8.43 $/year 15.66 $/year
Annual commercial energy cost 30.66 $/year 56.94 $/year
Performance per watt 2.49 pt/W 0.89 pt/W
Typical power consumption 28.44W 52.81W
Intel Core2 Duo T8100
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AMD Athlon 64 X2 4400+
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