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Differences What are the advantages of each

Front view of Intel Core i7 3930K

Reasons to consider the
Intel Core i7 3930K

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Much newer manufacturing process 32 nm vs 90 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Significantly more l3 cache 12 MB vs 1 MB 12x more l3 cache; more data can be stored in the l3 cache for quick access later
Higher clock speed 3.2 GHz vs 2.8 GHz Around 15% higher clock speed
More threads 12 vs 2 10 more threads
Much more l3 cache per core 2 MB/core vs 0.5 MB/core 4x more l3 cache per core
Much better overclocked clock speed (Air) 4.67 GHz vs 2.8 GHz More than 65% better overclocked clock speed (Air)
More cores 6 vs 2 Three times as many cores; run more applications at once
Newer Nov, 2011 vs Aug, 2006 Release date over 5 years later
Higher Maximum operating temperature 66.8 °C vs 55 °C More than 20% higher Maximum operating temperature
Much better overclocked clock speed (Water) 4.67 GHz vs 2.8 GHz More than 65% better overclocked clock speed (Water)
Front view of AMD Opteron 8220

Reasons to consider the
AMD Opteron 8220

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Supports more CPUs in SMP configuration 8 vs 1 7 supports more CPUs in SMP configuration
Much lower typical power consumption 77.19W vs 172.6W 2.2x lower typical power consumption
Much more l2 cache per core 1 MB/core vs 0.33 MB/core More than 3x more l2 cache per core
Much lower annual home energy cost 22.89 $/year vs 56.96 $/year 2.5x lower annual home energy cost
Much lower annual commercial energy cost 83.22 $/year vs 177.83 $/year 2.1x lower annual commercial energy cost

Features Key features of the Core i7 3930K  vs Opteron 8220 

clock speed

Core i7 3930K
3.2 GHz
Opteron 8220
2.8 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Core i7 3930K
4.67 GHz
Opteron 8220
2.8 GHz

overclocked clock speed (water)

Core i7 3930K
4.67 GHz
Opteron 8220
2.8 GHz

Specifications Full list of technical specs

summary

Core i7 3930K  vs
Opteron 8220 
Clock speed 3.2 GHz 2.8 GHz
Cores Hexa core Dual core
Socket type
LGA 2011
F
Is unlocked Yes No

features

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

power consumption

TDP 130W 95W
Annual home energy cost 56.96 $/year 22.89 $/year
Annual commercial energy cost 177.83 $/year 83.22 $/year
Typical power consumption 172.6W 77.19W

details

Core i7 3930K  vs
Opteron 8220 
Threads 12 2
L2 cache 2 MB 2 MB
L2 cache per core 0.33 MB/core 1 MB/core
L3 cache 12 MB 1 MB
L3 cache per core 2 MB/core 0.5 MB/core
Manufacture process 32 nm 90 nm
Max CPUs 1 8
Operating temperature Unknown - 66.8°C 0 - 55°C

overclocking

Overclocked clock speed 4.67 GHz 2.8 GHz
Overclocked clock speed (Water) 4.67 GHz 2.8 GHz
Overclocked clock speed (Air) 4.67 GHz 2.8 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 Core i7 3930K
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AMD Opteron 8220
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