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Differences What are the advantages of each

Front view of Intel Core i7 950

Reasons to consider the
Intel Core i7 950

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Much higher clock speed 3.06 GHz vs 1.3 GHz More than 2.2x higher clock speed
Significantly more l2 cache 1 MB vs 0.25 MB 4x more l2 cache; more data can be stored in the l2 cache for quick access later
More l3 cache 8 MB vs 1.5 MB More than 5.2x more l3 cache; more data can be stored in the l3 cache for quick access later
Much better overclocked clock speed (Air) 4.25 GHz vs 1.4 GHz More than 3x better overclocked clock speed (Air)
More cores 4 vs 1 3 more cores; run more applications at once
More threads 8 vs 2 6 more threads
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Much better overclocked clock speed (Water) 4.2 GHz vs 1.4 GHz Around 3x better overclocked clock speed (Water)
Front view of Intel Celeron 725C

Reasons to consider the
Intel Celeron 725C

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Much lower typical power consumption 8.13W vs 105.63W 13x lower typical power consumption
Much newer manufacturing process 32 nm vs 45 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much lower annual home energy cost 2.41 $/year vs 31.32 $/year 13x lower annual home energy cost
Much lower annual commercial energy cost 8.76 $/year vs 113.88 $/year 13x lower annual commercial energy cost
Newer Apr, 2012 vs Jun, 2009 Release date over 2 years later

Features Key features of the Core i7 950  vs Celeron 725C 

clock speed

Core i7 950
3.06 GHz
Celeron 725C
1.3 GHz

L2 cache

Celeron 725C
0.25 MB

L3 cache

overclocked clock speed (air)

Core i7 950
4.25 GHz
Celeron 725C
1.4 GHz

overclocked clock speed (water)

Core i7 950
4.2 GHz
Celeron 725C
1.4 GHz

TDP

Specifications Full list of technical specs

summary

Core i7 950  vs
Celeron 725C 
Clock speed 3.06 GHz 1.3 GHz
Cores Quad core Single core

features

Has a NX bit Yes Yes
Supports trusted computing No Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 130W 10W
Annual home energy cost 31.32 $/year 2.41 $/year
Annual commercial energy cost 113.88 $/year 8.76 $/year
Typical power consumption 105.63W 8.13W

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3-800
DDR3
Channels Triple Channel Single Channel
Supports ECC No Yes
Maximum bandwidth 25,599.99 MB/s 10,666.66 MB/s
Maximum memory size 24,576 MB 16,384 MB

details

Core i7 950  vs
Celeron 725C 
Architecture x86-64 x86-64
Threads 8 2
L2 cache 1 MB 0.25 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 1.5 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 45 nm 32 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 4.25 GHz 1.4 GHz
Overclocked clock speed (Water) 4.2 GHz 1.4 GHz
Overclocked clock speed (Air) 4.25 GHz 1.4 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 QPI DMI
Number of links 1 1
Transfer rate 4,800 MT/s 5,000 MT/s
Intel Core i7 950
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Intel Celeron 725C
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