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Differences What are the advantages of each

Front view of AMD Phenom II X4 965

Reasons to consider the
AMD Phenom II X4 965

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Is unlocked Yes vs No Somewhat common; An unlocked multiplier allows for easier overclocking
Higher clock speed 3.4 GHz vs 2.8 GHz More than 20% higher clock speed
Significantly better overclocked clock speed (Air) 4.05 GHz vs 2.8 GHz Around 45% better overclocked clock speed (Air)
Higher Maximum operating temperature 62 °C vs 55 °C Around 15% higher Maximum operating temperature
Much better overclocked clock speed (Water) 4.22 GHz vs 2.8 GHz More than 50% better overclocked clock speed (Water)
Newer Nov, 2009 vs Feb, 2009 Release date 8 months later
Front view of AMD Opteron 2387

Reasons to consider the
AMD Opteron 2387

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Much lower typical power consumption 60.94W vs 152.93W 2.5x lower typical power consumption
Supports more CPUs in SMP configuration 2 vs 1 Twice as many CPUs in SMP configuration
Much lower annual home energy cost 18.07 $/year vs 54.06 $/year 3x lower annual home energy cost
Much lower annual commercial energy cost 65.7 $/year vs 152.42 $/year 2.3x lower annual commercial energy cost

Features Key features of the Phenom II X4 965  vs Opteron 2387 

clock speed

Opteron 2387
2.8 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Phenom II X4 965
4.05 GHz
Opteron 2387
2.8 GHz

overclocked clock speed (water)

Phenom II X4 965
4.22 GHz
Opteron 2387
2.8 GHz

Specifications Full list of technical specs

summary

Phenom II X4 965  vs
Opteron 2387 
Clock speed 3.4 GHz 2.8 GHz
Cores Quad core Quad core
Socket type
AM3
F
Is unlocked Yes No

features

Has a NX bit Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE4a
SSE2
MMX
SSE3
SSE
3DNow!
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 140W 75W
Annual home energy cost 54.06 $/year 18.07 $/year
Annual commercial energy cost 152.42 $/year 65.7 $/year
Typical power consumption 152.93W 60.94W

bus

Clock speed 2,000 MHz 2,200 MHz

details

Phenom II X4 965  vs
Opteron 2387 
Threads 4 4
L2 cache 2 MB 2 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache 6 MB 6 MB
L3 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 45 nm 45 nm
Max CPUs 1 2
Clock multiplier 17 14
Voltage range 0.85 - 1.43V 1.32 - UnknownV
Operating temperature Unknown - 62°C 0 - 55°C

overclocking

Overclocked clock speed 4.05 GHz 2.8 GHz
Overclocked clock speed (Water) 4.22 GHz 2.8 GHz
Overclocked clock speed (Air) 4.05 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
AMD Phenom II X4 965
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AMD Opteron 2387
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