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Differences What are the advantages of each

Front view of AMD Athlon X2 3800+

Reasons to consider the
AMD Athlon X2 3800+

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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
More cores 2 vs 1 Twice as many cores; run more applications at once
More threads 2 vs 1 Twice as many threads
Front view of AMD Athlon 64 LE-1640

Reasons to consider the
AMD Athlon 64 LE-1640

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Much higher clock speed 2.7 GHz vs 2 GHz More than 35% higher clock speed
Much newer manufacturing process 65 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much higher Maximum operating temperature 65 °C vs 55 °C Around 20% higher Maximum operating temperature
Much better overclocked clock speed (Air) 3.24 GHz vs 2.7 GHz More than 20% better overclocked clock speed (Air)
Significantly lower typical power consumption 36.56W vs 52.81W More than 30% lower typical power consumption
Much better overclocked clock speed (Water) 3.79 GHz vs 2.75 GHz Around 40% better overclocked clock speed (Water)
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 Athlon X2 3800+ vs 64 LE-1640

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

Athlon X2 3800+
64.55 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Athlon X2 3800+  vs
64 LE-1640 
Clock speed 2 GHz 2.7 GHz
Cores Dual core Single core
Socket type
AM2
939

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
3DNow!

details

Athlon X2 3800+  vs
64 LE-1640 
Threads 2 1
L2 cache 1 MB 0.5 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
Manufacture process 90 nm 65 nm
Max CPUs 1 1
Operating temperature Unknown - 55°C Unknown - 65°C

overclocking

Overclocked clock speed 2.7 GHz 3.24 GHz
Overclocked clock speed (Water) 2.75 GHz 3.79 GHz
PassMark (Overclocked) 1,578.7 1,121.9
Overclocked clock speed (Air) 2.7 GHz 3.24 GHz

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 0.66 pt/W 0.93 pt/W
Typical power consumption 52.81W 36.56W
AMD Athlon X2 3800+
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AMD Athlon 64 LE-1640
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