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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 lower typical power consumption 60.94W vs 105.63W More than 40% lower typical power consumption
Much better overclocked clock speed (Water) 4.07 GHz vs 2.93 GHz Around 40% better overclocked clock speed (Water)
Much lower annual commercial energy cost 65.7 $/year vs 113.88 $/year More than 40% lower annual commercial energy cost
Much lower annual home energy cost 18.07 $/year vs 31.32 $/year More than 40% lower annual home energy cost
Front view of Intel Core2 QX6800

Reasons to consider the
Intel Core2 QX6800

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More cores 4 vs 2 Twice as many cores; run more applications at once
More threads 4 vs 2 Twice as many threads
Significantly better overclocked clock speed (Air) 3.82 GHz vs 3.54 GHz Around 10% better overclocked clock speed (Air)
Significantly higher Maximum operating temperature 64.5 °C vs 60.4 °C More than 5% higher Maximum operating temperature
Newer Apr, 2007 vs Jul, 2006 Release date 9 months later

Benchmarks Real world tests of Core2 X6800 vs QX6800

Cinebench R11.5

Cinebench R11.5 (Single Core)

Reviews Word on the street

Specifications Full list of technical specs

summary

Core2 X6800  vs
QX6800 
Clock speed 2.93 GHz 2.93 GHz
Cores Dual core Quad core
Socket type
LGA 775
Is unlocked Yes Yes

features

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

power consumption

TDP 75W 130W
Annual home energy cost 18.07 $/year 31.32 $/year
Annual commercial energy cost 65.7 $/year 113.88 $/year
Typical power consumption 60.94W 105.63W

bus

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

details

Core2 X6800  vs
QX6800 
Architecture x86-64 x86-64
Threads 2 4
L2 cache 4 MB 8 MB
L2 cache per core 2 MB/core 2 MB/core
Manufacture process 65 nm 65 nm
Transistor count 291,000,000 582,000,000
Max CPUs 1 1
Clock multiplier 11 11
Voltage range 0.85 - 1.5V 0.85 - 1.5V
Operating temperature Unknown - 60.4°C Unknown - 64.5°C

overclocking

Overclocked clock speed 3.54 GHz 3.82 GHz
Overclocked clock speed (Water) 4.07 GHz 2.93 GHz
Overclocked clock speed (Air) 3.54 GHz 3.82 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 QX6800
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