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Differences What are the advantages of each

Front view of Intel Core2 Duo E8400

Reasons to consider the
Intel Core2 Duo E8400

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Much better overclocked clock speed (Water) 4.23 GHz vs 3 GHz More than 40% better overclocked clock speed (Water)
Front view of AMD Athlon X4 740

Reasons to consider the
AMD Athlon X4 740

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Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Higher clock speed 3.2 GHz vs 3 GHz More than 5% higher clock speed
Newer Oct, 2012 vs Jan, 2008 Release date over 4 years later

Benchmarks Real world tests of Core2 Duo E8400 vs Athlon X4 740

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 E8400
128,000 MB/s
Athlon X4 740
2,030,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

3D Mark 11 (Physics)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo E8400  vs
Athlon X4 740 
Clock speed 3 GHz 3.2 GHz
Cores Dual core Quad core

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
AVX 1.1
SSE2
F16C
MMX
XOP
SSE3
SSE
CLMUL
AMD64
SSE4.1
FMA4
SSE4.2
CVT16
AMD-V
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

integrated graphics

GPU None None
Label N/A N/A
Latest DirectX N/A N/A
Number of displays supported N/A N/A
GPU clock speed N/A N/A
Turbo clock speed N/A N/A
3DMark06 N/A N/A

details

Core2 Duo E8400  vs
Athlon X4 740 
Architecture x86-64 x86-64
Threads 2 4
L2 cache 6 MB 4 MB
L2 cache per core 3 MB/core 1 MB/core
Manufacture process 45 nm 32 nm
Transistor count 410,000,000 1,303,000,000
Max CPUs 1 1
Voltage range 0.85 - 1.36V 0.82 - 1.48V
Operating temperature Unknown - 72.4°C Unknown - 73°C

overclocking

Overclock popularity 125 13
Overclock review score 4.5 0
Overclocked clock speed 4.22 GHz 4.21 GHz
Overclocked clock speed (Water) 4.23 GHz 3 GHz
Overclocked clock speed (Air) 4.22 GHz 4.21 GHz

power consumption

TDP 65W 65W
Annual home energy cost 15.66 $/year 15.66 $/year
Annual commercial energy cost 56.94 $/year 56.94 $/year
Performance per watt 1.83 pt/W 12.36 pt/W
Typical power consumption 52.81W 52.81W

bus

Clock speed 1,333 MHz 2,000 MHz
Intel Core2 Duo E8400
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AMD Athlon X4 740
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