CPUBoss Review Our evaluation of E8400 vs E7500


Benchmark performance using all cores

Cinebench R10 32-bit, PassMark, GeekBench (32-bit) and GeekBench (64-bit)

Single-core Performance

Individual core benchmark performance

Cinebench R10 32-bit (1-core) and PassMark (Single Core)


How much speed can you get out of the processor?

overclock popularity


Are you paying a premium for performance?

Performance Per Dollar

CPUBoss Score

Performance, Single-core Performance, Overclocking and Value

Intel Core2 Duo E8400 

CPUBoss recommends the Intel Core2 Duo E8400  based on its single-core performance.

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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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Significantly more l2 cache 6 MB vs 3 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 3 MB/core vs 1.5 MB/core 2x more l2 cache per core
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Better 3DMark11 physics score 2,310 vs 2,250 Around 5% better 3DMark11 physics score
Front view of Intel Core2 Duo E7500

Reasons to consider the
Intel Core2 Duo E7500

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Much better performance per dollar 32.94 pt/$ vs 26.09 pt/$ More than 25% better performance per dollar
Newer Jan, 2009 vs Jan, 2008 Release date a year later
Higher Maximum operating temperature 74.1 °C vs 72.4 °C Almost the same

Benchmarks Real world tests of Core2 Duo E8400 vs E7500

GeekBench (32-bit) Data courtesy Primate Labs

3D Mark 11 (Physics)

Cinebench R10 32-Bit

Cinebench R10 32-Bit (Single Core)

sysmark 2007 (overall)

PassMark Data courtesy PassMark

Specifications Full list of technical specs


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


Has a NX bit Yes Yes
Supports trusted computing Yes No
Has virtualization support Yes Yes
Instruction set extensions
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 5.62 pt/W 5.57 pt/W
Typical power consumption 52.81W 52.81W


Core2 Duo E8400  vs
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

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


Architecture FSB FSB
Number of links 1 1
Clock speed 1,333 MHz 1,066 MHz
Intel Core2 Duo E8400
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Intel Core2 Duo E7500
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