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Differences What are the advantages of each

Front view of Intel Pentium G622

Reasons to consider the
Intel Pentium G622

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Front view of Intel Core2 Duo E8400

Reasons to consider the
Intel Core2 Duo E8400

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Much higher clock speed 3 GHz vs 2.6 GHz More than 15% higher clock speed
Much better overclocked clock speed (Air) 4.23 GHz vs 2.6 GHz Around 65% better overclocked clock speed (Air)
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much better overclocked clock speed (Water) 4.17 GHz vs 2.6 GHz More than 60% better overclocked clock speed (Water)

Features Key features of the Pentium G622  vs Core2 Duo E8400 

clock speed

L2 cache

overclocked clock speed (air)

Pentium G622
2.6 GHz
Core2 Duo E8400
4.23 GHz

overclocked clock speed (water)

Pentium G622
2.6 GHz
Core2 Duo E8400
4.17 GHz

Specifications Full list of technical specs

summary

Pentium G622  vs
Core2 Duo E8400 
Clock speed 2.6 GHz 3 GHz
Cores Dual core Dual core
Socket type
LGA 1155
LGA 775

features

Has a NX bit Yes Yes
Supports trusted computing No Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
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

details

Pentium G622  vs
Core2 Duo E8400 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 1 MB 6 MB
L2 cache per core 0.5 MB/core 3 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 1 1
Clock multiplier 26 9
Operating temperature Unknown - 69.1°C Unknown - 72.4°C

overclocking

Overclocked clock speed 2.6 GHz 4.23 GHz
Overclocked clock speed (Water) 2.6 GHz 4.17 GHz
Overclocked clock speed (Air) 2.6 GHz 4.23 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics N/A
Number of displays supported 2 N/A
GPU clock speed 850 MHz N/A
Turbo clock speed 1,100 MHz N/A

bus

Architecture DMI FSB
Number of links 1 1
Intel Pentium G622
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Intel Core2 Duo E8400
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