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Intel Core2 Duo E8400

Front view of Intel Core2 Duo E8400
Front view of Intel Core2 Duo E7500

Intel Core2 Duo E7500

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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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Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much better overclocked clock speed (Air) 4.22 GHz vs 3.85 GHz Around 10% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 4.23 GHz vs 4.06 GHz Around 5% better overclocked clock speed (Water)
Front view of Intel Core2 Duo E7500

Reasons to consider the
Intel Core2 Duo E7500

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Higher Maximum operating temperature 74.1 °C vs 72.4 °C Almost the same
Newer Jan, 2009 vs Jan, 2008 Release date a year later

Benchmarks Real world tests of Core2 Duo E8400 vs E7500

GeekBench 3 (Multi-core) Data courtesy Primate Labs

Core2 Duo E8400
2,982
Core2 Duo E7500
2,850

GeekBench 3 (Single core) Data courtesy Primate Labs

Core2 Duo E8400
1,625
Core2 Duo E7500
1,553

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core2 Duo E8400
128,000 MB/s
Core2 Duo E7500
124,700 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

Core2 Duo E8400
2,826
Core2 Duo E7500
2,673

GeekBench (64-bit) Data courtesy Primate Labs

Core2 Duo E8400
3,092
Core2 Duo E7500
2,986

GeekBench

Core2 Duo E8400
4,794
Core2 Duo E7500
4,879

PassMark Data courtesy Passmark

Core2 Duo E8400
2,160
Core2 Duo E7500
1,877

PassMark (Single Core)

Core2 Duo E8400
1,251
Core2 Duo E7500
1,204

Specifications Full list of technical specs

summary

 Core2 Duo E8400  vs
E7500 
Clock speed 3 GHz 2.93 GHz
Cores Dual core Dual core
Socket type
LGA 775

features
Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

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 1.9 pt/W
Typical power consumption 52.81W 52.81W

bus
Architecture FSB FSB
Number of links 1 1
Clock speed 1,333 MHz 1,066 MHz

details

 Core2 Duo E8400  vs
E7500 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 6 MB 3 MB
L2 cache per core 3 MB/core 1.5 MB/core
Manufacture process 45 nm 45 nm
Transistor count 410,000,000 228,000,000
Max CPUs 1 1
Clock multiplier 9 11
Voltage range 0.85 - 1.36V 0.85 - 1.36V
Operating temperature Unknown - 72.4°C Unknown - 74.1°C

overclocking
Overclocked clock speed 4.22 GHz 3.85 GHz
Overclocked clock speed (Water) 4.23 GHz 4.06 GHz
Overclocked clock speed (Air) 4.22 GHz 3.85 GHz

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
Intel Core2 Duo E8400
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Intel Core2 Duo E7500
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