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Differences What are the advantages of each

Front view of Intel Core2 Duo T6500

Reasons to consider the
Intel Core2 Duo T6500

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Much better 3DMark06 CPU score 1,879 vs 23 Around 81.8x better 3DMark06 CPU score
Higher clock speed 2.1 GHz vs 1.83 GHz Around 15% higher clock speed
Much better PassMark (Single core) score 1,705 vs 499 Around 3.5x better PassMark (Single core) score
Much more l2 cache per core 1 MB/core vs 0.5 MB/core 2x more l2 cache per core
Significantly better PassMark score 6,174 vs 1,741 More than 3.5x better PassMark score
Better overclocked clock speed (Air) 2.9 GHz vs 2.25 GHz Around 30% better overclocked clock speed (Air)
Better overclocked clock speed (Water) 2.5 GHz vs 2.25 GHz More than 10% better overclocked clock speed (Water)
Front view of Intel Celeron N2940

Reasons to consider the
Intel Celeron N2940

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Much newer manufacturing process 22 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Has virtualization support Yes vs No Somewhat common; Boosts performance of virtual machines
Significantly lower typical power consumption 6.09W vs 28.44W 4.7x lower typical power consumption
Newer Jul, 2014 vs Apr, 2009 Release date over 5 years later
Significantly better performance per watt 7.82 pt/W vs 4.19 pt/W More than 85% better performance per watt
More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Significantly lower annual home energy cost 1.81 $/year vs 8.43 $/year 4.7x lower annual home energy cost
Significantly lower annual commercial energy cost 6.57 $/year vs 30.66 $/year 4.7x lower annual commercial energy cost

Benchmarks Real world tests of Core2 Duo T6500 vs Celeron N2940

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core2 Duo T6500
88,350 MB/s
Celeron N2940
52,800 MB/s

3D Mark 06 (CPU)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 Duo T6500  vs
Celeron N2940 
Clock speed 2.1 GHz 1.83 GHz
Cores Dual core Quad core

features

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

power consumption

TDP 35W 7.5W
Annual home energy cost 8.43 $/year 1.81 $/year
Annual commercial energy cost 30.66 $/year 6.57 $/year
Performance per watt 4.19 pt/W 7.82 pt/W
Typical power consumption 28.44W 6.09W

details

Core2 Duo T6500  vs
Celeron N2940 
Architecture x86-64 x86-64
Threads 2 4
L2 cache 2 MB 2 MB
L2 cache per core 1 MB/core 0.5 MB/core
Manufacture process 45 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.9 GHz 2.25 GHz
Overclocked clock speed (Water) 2.5 GHz 2.25 GHz
Overclocked clock speed (Air) 2.9 GHz 2.25 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics
Number of displays supported N/A 2
GPU clock speed N/A 313 MHz
Turbo clock speed N/A 854 MHz

bus

Architecture FSB FSB
Number of links 1 1
Intel Core2 Duo T6500
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Intel Celeron N2940
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