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Differences What are the advantages of each

Front view of Intel Core i7 990X

Reasons to consider the
Intel Core i7 990X

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Significantly higher clock speed 3.46 GHz vs 2.5 GHz Around 40% higher clock speed
Significantly more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Front view of AMD Opteron 6280

Reasons to consider the
AMD Opteron 6280

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Much more l2 cache 16 MB vs 2 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
Supports more CPUs in SMP configuration 4 vs 1 3 supports more CPUs in SMP configuration
More cores 16 vs 6 10 more cores; run more applications at once
More l3 cache 16 MB vs 12 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
Much more l2 cache per core 1 MB/core vs 0.33 MB/core More than 3x more l2 cache per core
Lower typical power consumption 93.44W vs 105.63W More than 10% lower typical power consumption
More threads 16 vs 12 4 more threads
Lower annual home energy cost 27.7 $/year vs 31.32 $/year More than 10% lower annual home energy cost
Lower annual commercial energy cost 100.74 $/year vs 113.88 $/year More than 10% lower annual commercial energy cost

Features Key features of the Core i7 990X  vs Opteron 6280 

clock speed

Core i7 990X
3.46 GHz
Opteron 6280
2.5 GHz

L2 cache

L3 cache

TDP

Specifications Full list of technical specs

summary

Core i7 990X  vs
Opteron 6280 
Clock speed 3.46 GHz 2.5 GHz
Cores Hexa core 16 core
Socket type
LGA 1366
G34

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
Supplemental SSE3
AES

details

Core i7 990X  vs
Opteron 6280 
Threads 12 16
L2 cache 2 MB 16 MB
L2 cache per core 0.33 MB/core 1 MB/core
L3 cache 12 MB 16 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 32 nm 32 nm
Max CPUs 1 4

power consumption

TDP 130W 115W
Annual home energy cost 31.32 $/year 27.7 $/year
Annual commercial energy cost 113.88 $/year 100.74 $/year
Typical power consumption 105.63W 93.44W

bus

Architecture QPI HyperTransport 3.0
Transfer rate 6,400 MT/s 6,400 MT/s
Clock speed 3,200 MHz 3,200 MHz
Intel Core i7 990X
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AMD Opteron 6280
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