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Differences What are the advantages of each

Front view of Intel Pentium G620

Reasons to consider the
Intel Pentium G620

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Much newer manufacturing process 32 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 2.6 GHz vs 1.8 GHz Around 45% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Significantly more l3 cache per core 1.5 MB/core vs 0.5 MB/core 3x more l3 cache per core
Higher Maximum operating temperature 69.1 °C vs 55 °C More than 25% higher Maximum operating temperature
Newer Apr, 2011 vs Sep, 2007 Release date over 3 years later
Better overclocked clock speed (Air) 2.72 GHz vs 2.02 GHz Around 35% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 2.6 GHz vs 1.8 GHz Around 45% better overclocked clock speed (Water)
Front view of AMD Opteron 8346 HE

Reasons to consider the
AMD Opteron 8346 HE

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Supports more CPUs in SMP configuration 8 vs 1 7 supports more CPUs in SMP configuration
Significantly more l2 cache 2 MB vs 1 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly lower typical power consumption 44.69W vs 70.8W More than 35% lower typical power consumption
More cores 4 vs 2 Twice as many cores; run more applications at once
Much lower annual home energy cost 13.25 $/year vs 27.64 $/year 2.1x lower annual home energy cost
More threads 4 vs 2 Twice as many threads
Lower annual commercial energy cost 48.18 $/year vs 66.84 $/year Around 30% lower annual commercial energy cost

Features Key features of the Pentium G620  vs Opteron 8346 HE 

clock speed

Pentium G620
2.6 GHz
Opteron 8346 HE
1.8 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Pentium G620
2.72 GHz
Opteron 8346 HE
2.02 GHz

overclocked clock speed (water)

Pentium G620
2.6 GHz
Opteron 8346 HE
1.8 GHz

Specifications Full list of technical specs

summary

Pentium G620  vs
Opteron 8346 HE 
Clock speed 2.6 GHz 1.8 GHz
Cores Dual core Quad core
Socket type
LGA 1155
F

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
SSE3
SSE
SSE4.1
SSE4.2
3DNow!
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 65W 55W
Annual home energy cost 27.64 $/year 13.25 $/year
Annual commercial energy cost 66.84 $/year 48.18 $/year
Typical power consumption 70.8W 44.69W

details

Pentium G620  vs
Opteron 8346 HE 
Threads 2 4
L2 cache 1 MB 2 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache 3 MB 2 MB
L3 cache per core 1.5 MB/core 0.5 MB/core
Manufacture process 32 nm 65 nm
Max CPUs 1 8
Clock multiplier 26 9
Operating temperature Unknown - 69.1°C 0 - 55°C

overclocking

Overclocked clock speed 2.72 GHz 2.02 GHz
Overclocked clock speed (Water) 2.6 GHz 1.8 GHz
Overclocked clock speed (Air) 2.72 GHz 2.02 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
Intel Pentium G620
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AMD Opteron 8346 HE
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