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

No winner declared

Too close to call

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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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Much 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
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Significantly better PassMark score 2,172 vs 1,883 More than 15% better PassMark score
Significantly better cinebench r10 32Bit 1-core score 3,647 vs 3,576 Almost the same
Better overclocked clock speed (Air) 4.23 GHz vs 3.83 GHz More than 10% better overclocked clock speed (Air)
Slightly better PassMark (Single core) score 1,257 vs 1,206 Around 5% better PassMark (Single core) score
Better cinebench r10 32Bit score 7,187 vs 6,903 Around 5% better cinebench r10 32Bit score
Better overclocked clock speed (Water) 4.21 GHz vs 3.98 GHz More than 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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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 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

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

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 2.11 pt/W 2.18 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 4.23 GHz 3.83 GHz
Overclocked clock speed (Water) 4.21 GHz 3.98 GHz
Overclocked clock speed (Air) 4.23 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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