CPUBoss Review Our evaluation of X3380 vs 955 among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

5.2

CPUBoss Score

Combination of all six facets

Winner
Intel Xeon X3380 

CPUBoss recommends the Intel Xeon X3380  based on its performance, single-core performance and value.

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VS

Differences What are the advantages of each

Front view of Intel Xeon X3380

Reasons to consider the
Intel Xeon X3380

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Much more l2 cache 12 MB vs 4 MB 3x more l2 cache; more data can be stored in the l2 cache for quick access later
Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Supports dynamic frequency scaling Yes vs No Somewhat common; Allows for maximum performance when needed, while conserving power and minimizing heat production when not needed
Much more l2 cache per core 3 MB/core vs 2 MB/core 50% more l2 cache per core
Significantly lower typical power consumption 77.19W vs 105.63W More than 25% lower typical power consumption
Better PassMark (Single core) score 1,352 vs 796 Around 70% better PassMark (Single core) score
Better PassMark score 4,697 vs 905 Around 5.2x better PassMark score
More cores 4 vs 2 Twice as many cores; run more applications at once
Better performance per dollar 0.31 pt/$ vs 0.06 pt/$ More than 4.8x better performance per dollar
Newer Feb, 2009 vs Dec, 2005 Release date over 3 years later
Better performance per watt 1.81 pt/W vs 0.49 pt/W Around 3.8x better performance per watt
Significantly lower annual home energy cost 22.89 $/year vs 31.32 $/year More than 25% lower annual home energy cost
Significantly lower annual commercial energy cost 83.22 $/year vs 113.88 $/year More than 25% lower annual commercial energy cost
Front view of Intel Pentium 955

Reasons to consider the
Intel Pentium 955

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Higher clock speed 3.46 GHz vs 3.16 GHz Around 10% higher clock speed
Much better overclocked clock speed (Water) 4.61 GHz vs 3.16 GHz More than 45% better overclocked clock speed (Water)

Benchmarks Real world tests of Xeon X3380 vs Pentium 955

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon X3380  vs
Pentium 955 
Clock speed 3.16 GHz 3.46 GHz
Cores Quad core Dual core
Socket type
LGA 775

features

Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE3
SSE
SSE4.1
Supplemental SSE3
Supports dynamic frequency scaling Yes No

power consumption

TDP 95W 130W
Annual home energy cost 22.89 $/year 31.32 $/year
Annual commercial energy cost 83.22 $/year 113.88 $/year
Performance per watt 1.81 pt/W 0.49 pt/W
Typical power consumption 77.19W 105.63W

details

Xeon X3380  vs
Pentium 955 
Architecture x86-64 x86-64
Threads 4 4
L2 cache 12 MB 4 MB
L2 cache per core 3 MB/core 2 MB/core
Manufacture process 45 nm 65 nm
Transistor count 820,000,000 376,000,000
Max CPUs 1 1
Voltage range 0.85 - 1.36V 1.2 - 1.34V
Operating temperature Unknown - 71.4°C Unknown - 68.6°C

overclocking

Overclocked clock speed 4.53 GHz 4.39 GHz
Overclocked clock speed (Water) 3.16 GHz 4.61 GHz
Overclocked clock speed (Air) 4.53 GHz 4.39 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

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 1,333 MHz 1,066 MHz
Intel Xeon X3380
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Intel Pentium 955
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