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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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Much higher clock speed 3.46 GHz vs 1.6 GHz Around 2.2x higher clock speed
Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Slightly more l3 cache 12 MB vs 10 MB 20% more l3 cache; more data can be stored in the l3 cache for quick access later
Significantly more l3 cache per core 2 MB/core vs 1.25 MB/core 60% more l3 cache per core
More threads 12 vs 8 4 more threads
Front view of AMD Opteron 61-1

Reasons to consider the
AMD Opteron 61-1

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Much more l2 cache 4 MB vs 2 MB 2x 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 8 vs 6 2 more cores; run more applications at once
More l2 cache per core 0.5 MB/core vs 0.33 MB/core More than 50% more l2 cache per core

Features Key features of the Core i7 990X  vs Opteron 61-1 

clock speed

Core i7 990X
3.46 GHz
Opteron 61-1
1.6 GHz

L2 cache

L3 cache

Specifications Full list of technical specs

summary

Core i7 990X  vs
Opteron 61-1 
Clock speed 3.46 GHz 1.6 GHz
Cores Hexa core Octa 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
3DNow!
Supplemental SSE3
AES

details

Core i7 990X  vs
Opteron 61-1 
Threads 12 8
L2 cache 2 MB 4 MB
L2 cache per core 0.33 MB/core 0.5 MB/core
L3 cache 12 MB 10 MB
L3 cache per core 2 MB/core 1.25 MB/core
Manufacture process 32 nm 45 nm
Max CPUs 1 4

power consumption

Typical power consumption 105.63W N/A

bus

Architecture QPI HyperTransport 3.0
Clock speed 3,200 MHz 3,200 MHz
Intel Core i7 990X
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AMD Opteron 61-1
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