CPUBoss Review Our evaluation of E8400 vs 260 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

CPUBoss Score

Combination of all six facets

Winner
Intel Core2 Duo E8400 

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

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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 2 MB 3x 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 MB/core 3x more l2 cache per core
Significantly better PassMark score 2,172 vs 1,894 Around 15% better PassMark score
Better PassMark (Single core) score 1,257 vs 1,076 More than 15% better PassMark (Single core) score
Better overclocked clock speed (Air) 4.23 GHz vs 3.85 GHz Around 10% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 4.21 GHz vs 3.91 GHz Around 10% better overclocked clock speed (Water)
Front view of AMD Athlon II X2 260

Reasons to consider the
AMD Athlon II X2 260

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Higher clock speed 3.2 GHz vs 3 GHz More than 5% higher clock speed
Newer May, 2010 vs Jan, 2008 Release date over 2 years later
Higher Maximum operating temperature 74 °C vs 72.4 °C Almost the same

Benchmarks Real world tests of Core2 Duo E8400 vs Athlon II X2 260

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 II X2 260
128,900 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
Athlon II X2 260 
Clock speed 3 GHz 3.2 GHz
Cores Dual core Dual core
Socket type
LGA 775
AM3

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
SSE4.1
3DNow!
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 2.19 pt/W
Typical power consumption 52.81W 52.81W

bus

Clock speed 1,333 MHz 2,000 MHz

details

Core2 Duo E8400  vs
Athlon II X2 260 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 6 MB 2 MB
L2 cache per core 3 MB/core 1 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 1
Voltage range 0.85 - 1.36V 0.83 - 1.4V
Operating temperature Unknown - 72.4°C Unknown - 74°C

overclocking

Overclock popularity 125 13
Overclocked clock speed 4.23 GHz 3.85 GHz
Overclocked clock speed (Water) 4.21 GHz 3.91 GHz
Overclocked clock speed (Air) 4.23 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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AMD Athlon II X2 260
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