CPUBoss Review Our evaluation of E8400 vs E7500 among desktop CPUs (45 to 75W)

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Fire Strike

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Fire Strike, CompuBench 1.5 Bitcoin mining and 11 more

5.9

CPUBoss Score

Combination of all six facets

Winner
Intel Core2 Duo E8400 

CPUBoss recommends the Intel Core2 Duo E8400  based on its single-core performance, overclocking and value.

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VS

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
Much better performance per dollar 16.76 pt/$ vs 8.83 pt/$ Around 90% better performance per dollar
Better overclocked clock speed (Air) 4.24 GHz vs 3.83 GHz More than 10% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 4.26 GHz vs 3.94 GHz Around 10% better overclocked clock speed (Water)
Front view of Intel Core2 Duo E7500

Reasons to consider the
Intel Core2 Duo E7500

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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 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench (32-bit) Data courtesy Primate Labs

3D Mark 11 (Physics)

Cinebench R10 32-Bit

Cinebench R10 32-Bit (Single Core)

sysmark 2007 (overall)

sysmark 2007 (3d)

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 3.61 pt/W 3.39 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 4.24 GHz 3.83 GHz
Overclocked clock speed (Water) 4.26 GHz 3.94 GHz
Overclocked clock speed (Air) 4.24 GHz 3.83 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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