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Differences What are the advantages of each

Front view of Intel Core i7 3770

Reasons to consider the
Intel Core i7 3770

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Significantly higher clock speed 3.4 GHz vs 2.2 GHz Around 55% higher clock speed
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much better overclocked clock speed (Air) 4.03 GHz vs 2.2 GHz Around 85% better overclocked clock speed (Air)
Significantly more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Much better overclocked clock speed (Water) 4.32 GHz vs 2.2 GHz More than 95% better overclocked clock speed (Water)
Newer Apr, 2012 vs Nov, 2011 Release date 5 months later
Front view of AMD Opteron 42MX HE

Reasons to consider the
AMD Opteron 42MX HE

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Much more l2 cache 8 MB vs 1 MB 8x more l2 cache; more data can be stored in the l2 cache for quick access later
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
More cores 8 vs 4 Twice as many cores; run more applications at once
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Lower typical power consumption 52.81W vs 62.56W More than 15% lower typical power consumption
Lower annual commercial energy cost 56.94 $/year vs 67.45 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 15.66 $/year vs 18.55 $/year More than 15% lower annual home energy cost

Features Key features of the Core i7 3770  vs Opteron 42MX HE 

clock speed

Core i7 3770
3.4 GHz
Opteron 42MX HE
2.2 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Core i7 3770
4.03 GHz
Opteron 42MX HE
2.2 GHz

overclocked clock speed (water)

Core i7 3770
4.32 GHz
Opteron 42MX HE
2.2 GHz

Specifications Full list of technical specs

summary

Core i7 3770  vs
Opteron 42MX HE 
Clock speed 3.4 GHz 2.2 GHz
Cores Quad core Octa core
Socket type
LGA 1155
C32

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES

bus

Architecture DMI HyperTransport 3.0
Transfer rate 5,000 MT/s 6,400 MT/s

details

Core i7 3770  vs
Opteron 42MX HE 
Threads 8 8
L2 cache 1 MB 8 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 2
Clock multiplier 34 16

overclocking

Overclocked clock speed 4.03 GHz 2.2 GHz
Overclocked clock speed (Water) 4.32 GHz 2.2 GHz
Overclocked clock speed (Air) 4.03 GHz 2.2 GHz

power consumption

TDP 77W 65W
Annual home energy cost 18.55 $/year 15.66 $/year
Annual commercial energy cost 67.45 $/year 56.94 $/year
Typical power consumption 62.56W 52.81W
Intel Core i7 3770
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AMD Opteron 42MX HE
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