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Differences What are the advantages of each

Front view of Intel Pentium E6500K

Reasons to consider the
Intel Pentium E6500K

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Higher Maximum operating temperature 74.1 °C vs 72.4 °C Almost the same
Newer Jul, 2009 vs Jan, 2008 Release date over 1 years later
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
Slightly better overclocked clock speed (Air) 4.22 GHz vs 4.18 GHz Almost the same

Features Key features of the Pentium E6500K  vs Core2 Duo E8400 

clock speed

L2 cache

overclocked clock speed (air)

Pentium E6500K
4.18 GHz
Core2 Duo E8400
4.22 GHz

overclocked clock speed (water)

Pentium E6500K
4.17 GHz
Core2 Duo E8400
4.23 GHz

Specifications Full list of technical specs

summary

Pentium E6500K  vs
Core2 Duo E8400 
Clock speed 2.93 GHz 3 GHz
Cores Dual core Dual core
Socket type
LGA 775

features

Has a NX bit Yes Yes
Supports trusted computing No Yes
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
Typical power consumption 52.81W 52.81W

bus

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

details

Pentium E6500K  vs
Core2 Duo E8400 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 2 MB 6 MB
L2 cache per core 1 MB/core 3 MB/core
Manufacture process 45 nm 45 nm
Transistor count 228,000,000 410,000,000
Max CPUs 1 1
Clock multiplier 11 9
Operating temperature Unknown - 74.1°C Unknown - 72.4°C

overclocking

Overclocked clock speed 4.18 GHz 4.22 GHz
Overclocked clock speed (Water) 4.17 GHz 4.23 GHz
Overclocked clock speed (Air) 4.18 GHz 4.22 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 Pentium E6500K
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Intel Core2 Duo E8400
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