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Differences What are the advantages of each

Front view of Intel Core i7 870

Reasons to consider the
Intel Core i7 870

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Significantly higher clock speed 2.93 GHz vs 2.1 GHz Around 40% higher clock speed
Much better overclocked clock speed (Air) 4.1 GHz vs 2.1 GHz More than 95% better overclocked clock speed (Air)
Significantly more l3 cache per core 2 MB/core vs 1 MB/core 2x more l3 cache per core
Slightly more l3 cache 8 MB vs 6 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
Significantly higher Maximum operating temperature 72.7 °C vs 55 °C More than 30% higher Maximum operating temperature
Much better overclocked clock speed (Water) 4.28 GHz vs 2.1 GHz More than 2x better overclocked clock speed (Water)
More threads 8 vs 6 2 more threads
Front view of AMD Opteron 2425 HE

Reasons to consider the
AMD Opteron 2425 HE

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Much more l2 cache 3 MB vs 1 MB 3x more l2 cache; more data can be stored in the l2 cache for quick access later
Much lower typical power consumption 44.69W vs 121W 2.7x lower typical power consumption
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
More cores 6 vs 4 2 more cores; run more applications at once
Much lower annual home energy cost 13.25 $/year vs 42.57 $/year 3.2x lower annual home energy cost
More l2 cache per core 0.5 MB/core vs 0.25 MB/core 2x more l2 cache per core
Much lower annual commercial energy cost 48.18 $/year vs 120.89 $/year 2.5x lower annual commercial energy cost

Features Key features of the Core i7 870  vs Opteron 2425 HE 

clock speed

Core i7 870
2.93 GHz
Opteron 2425 HE
2.1 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Core i7 870
4.1 GHz
Opteron 2425 HE
2.1 GHz

overclocked clock speed (water)

Core i7 870
4.28 GHz
Opteron 2425 HE
2.1 GHz

Specifications Full list of technical specs

summary

Core i7 870  vs
Opteron 2425 HE 
Clock speed 2.93 GHz 2.1 GHz
Cores Quad core Hexa core
Socket type
LGA 1156
F
Is unlocked No No

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 95W 55W
Annual home energy cost 42.57 $/year 13.25 $/year
Annual commercial energy cost 120.89 $/year 48.18 $/year
Typical power consumption 121W 44.69W

bus

Architecture DMI HyperTransport 3.0

details

Core i7 870  vs
Opteron 2425 HE 
Threads 8 6
L2 cache 1 MB 3 MB
L2 cache per core 0.25 MB/core 0.5 MB/core
L3 cache 8 MB 6 MB
L3 cache per core 2 MB/core 1 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 2
Clock multiplier 22 10
Voltage range 0.65 - 1.4V 1 - UnknownV
Operating temperature Unknown - 72.7°C 0 - 55°C

overclocking

Overclocked clock speed 4.1 GHz 2.1 GHz
Overclocked clock speed (Water) 4.28 GHz 2.1 GHz
Overclocked clock speed (Air) 4.1 GHz 2.1 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 870
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AMD Opteron 2425 HE
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