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Differences What are the advantages of each

Front view of Intel Core i5 520M

Reasons to consider the
Intel Core i5 520M

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Significantly higher clock speed 2.4 GHz vs 1.5 GHz 60% higher clock speed
Higher GPU clock speed 500 MHz vs 350 MHz Around 45% higher GPU clock speed
Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Much better overclocked clock speed (Air) 2.86 GHz vs 1.5 GHz More than 90% better overclocked clock speed (Air)
Slightly more l3 cache 3 MB vs 1 MB 3x more l3 cache; more data can be stored in the l3 cache for quick access later
More l3 cache per core 1.5 MB/core vs 1 MB/core 50% more l3 cache per core
More threads 4 vs 1 3 more threads
More cores 2 vs 1 Twice as many cores; run more applications at once
Significantly better overclocked clock speed (Water) 2.4 GHz vs 1.5 GHz 60% better overclocked clock speed (Water)
Front view of Intel Celeron 927UE

Reasons to consider the
Intel Celeron 927UE

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More l2 cache 1 MB vs 0.5 MB 2x more l2 cache; more data can be stored in the l2 cache for quick access later
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Much more l2 cache per core 1 MB/core vs 0.25 MB/core 4x more l2 cache per core
Significantly better turbo clock speed 900 MHz vs 766 MHz More than 15% better turbo clock speed
Lower typical power consumption 13.81W vs 28.44W 2.1x lower typical power consumption
Newer Jan, 2013 vs Jan, 2010 Release date over 3 years later
Lower annual home energy cost 4.1 $/year vs 8.43 $/year 2.1x lower annual home energy cost
Lower annual commercial energy cost 14.89 $/year vs 30.66 $/year 2.1x lower annual commercial energy cost

Features Key features of the Core i5 520M  vs Celeron 927UE 

clock speed

Core i5 520M
2.4 GHz
Celeron 927UE
1.5 GHz

L2 cache

L3 cache

gpu clock speed

Core i5 520M
500 MHz
Celeron 927UE
350 MHz

overclocked clock speed (air)

Core i5 520M
2.86 GHz
Celeron 927UE
1.5 GHz

overclocked clock speed (water)

Core i5 520M
2.4 GHz
Celeron 927UE
1.5 GHz

Specifications Full list of technical specs

summary

Core i5 520M  vs
Celeron 927UE 
Clock speed 2.4 GHz 1.5 GHz
Cores Dual core Single core
Socket type
BGA 1288
rPGA 988A
BGA 1023

features

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

power consumption

TDP 35W 17W
Annual home energy cost 8.43 $/year 4.1 $/year
Annual commercial energy cost 30.66 $/year 14.89 $/year
Typical power consumption 28.44W 13.81W

bus

Architecture DMI DMI
Number of links 1 1
Transfer rate 2,500 MT/s 5,000 MT/s

details

Core i5 520M  vs
Celeron 927UE 
Threads 4 1
L2 cache 0.5 MB 1 MB
L2 cache per core 0.25 MB/core 1 MB/core
L3 cache 3 MB 1 MB
L3 cache per core 1.5 MB/core 1 MB/core
Manufacture process 32 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 2.86 GHz 1.5 GHz
Overclocked clock speed (Water) 2.4 GHz 1.5 GHz
Overclocked clock speed (Air) 2.86 GHz 1.5 GHz

integrated graphics

GPU GPU GPU
Label Intel® HD Graphics Intel® HD Graphics
Number of displays supported 2 2
GPU clock speed 500 MHz 350 MHz
Turbo clock speed 766 MHz 900 MHz

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1066
DDR3-800
DDR3
Channels Dual Channel Dual Channel
Supports ECC No Yes
Maximum bandwidth 17,066.66 MB/s 12,800 MB/s
Maximum memory size 8,499.2 MB 16,384 MB
Intel Core i5 520M
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Intel Celeron 927UE
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