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Differences What are the advantages of each

Front view of Intel Core2 X6800

Reasons to consider the
Intel Core2 X6800

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Much better performance per watt 1.59 pt/W vs 1.1 pt/W Around 45% better performance per watt
Much lower typical power consumption 60.94W vs 120.65W Around 50% lower typical power consumption
Much lower annual home energy cost 18.07 $/year vs 47.3 $/year 2.6x lower annual home energy cost
Much lower annual commercial energy cost 65.7 $/year vs 113.62 $/year More than 40% lower annual commercial energy cost
Front view of Intel Core2 Duo E8600

Reasons to consider the
Intel Core2 Duo E8600

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Much newer manufacturing process 45 nm vs 65 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly higher clock speed 3.33 GHz vs 2.93 GHz Around 15% higher clock speed
Much better overclocked clock speed (Air) 4.61 GHz vs 3.54 GHz More than 30% better overclocked clock speed (Air)
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much higher Maximum operating temperature 72.4 °C vs 60.4 °C Around 20% higher Maximum operating temperature
Significantly better overclocked clock speed (Water) 4.6 GHz vs 4.07 GHz Around 15% better overclocked clock speed (Water)
Newer Jul, 2008 vs Jul, 2006 Release date over 2 years later

Benchmarks Real world tests of Core2 X6800 vs Duo E8600

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 X6800
125,200 MB/s
Core2 Duo E8600
136,900 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench

3D Mark 11 (Physics)

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Core2 X6800  vs
Duo E8600 
Clock speed 2.93 GHz 3.33 GHz
Cores Dual core Dual core
Socket type
LGA 775

features

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

power consumption

TDP 75W 65W
Annual home energy cost 18.07 $/year 47.3 $/year
Annual commercial energy cost 65.7 $/year 113.62 $/year
Performance per watt 1.59 pt/W 1.1 pt/W
Typical power consumption 60.94W 120.65W

bus

Architecture FSB FSB
Number of links 1 1
Clock speed 1,066 MHz 1,333 MHz

details

Core2 X6800  vs
Duo E8600 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 4 MB 6 MB
L2 cache per core 2 MB/core 3 MB/core
Manufacture process 65 nm 45 nm
Transistor count 291,000,000 410,000,000
Max CPUs 1 1
Clock multiplier 11 10
Voltage range 0.85 - 1.5V 0.85 - 1.36V
Operating temperature Unknown - 60.4°C Unknown - 72.4°C

overclocking

Overclocked clock speed 3.54 GHz 4.61 GHz
Overclocked clock speed (Water) 4.07 GHz 4.6 GHz
Overclocked clock speed (Air) 3.54 GHz 4.61 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 Core2 X6800
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Intel Core2 Duo E8600
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