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Differences What are the advantages of each

Front view of Intel Pentium 1405

Reasons to consider the
Intel Pentium 1405

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Supports trusted computing Yes vs No Somewhat common; Allows for safer, more reliable computing
Supports more RAM 384,000 MB vs 32,768 MB Supports around 11.8x more RAM
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Front view of Intel Core i7 3517U

Reasons to consider the
Intel Core i7 3517U

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Significantly higher turbo clock speed 3 GHz vs 1.8 GHz More than 65% higher turbo clock speed
Higher clock speed 1.9 GHz vs 1.2 GHz Around 60% higher clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Significantly newer manufacturing process 22 nm vs 32 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Lower typical power consumption 13.81W vs 32.5W 2.4x lower typical power consumption
Significantly better overclocked clock speed (Air) 2.78 GHz vs 1.8 GHz Around 55% better overclocked clock speed (Air)
More threads 4 vs 2 Twice as many threads
Lower annual home energy cost 4.1 $/year vs 9.64 $/year 2.4x lower annual home energy cost
Lower annual commercial energy cost 14.89 $/year vs 35.04 $/year 2.4x lower annual commercial energy cost
Newer Jun, 2012 vs Apr, 2012 Release date 2 months later

Features Key features of the Pentium 1405  vs Core i7 3517U 

clock speed

Pentium 1405
1.2 GHz
Core i7 3517U
1.9 GHz

turbo clock speed

Pentium 1405
1.8 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Pentium 1405
1.8 GHz
Core i7 3517U
2.78 GHz

overclocked clock speed (water)

Pentium 1405
1.8 GHz
Core i7 3517U
1.9 GHz

Specifications Full list of technical specs

summary

Pentium 1405  vs
Core i7 3517U 
Clock speed 1.2 GHz 1.9 GHz
Turbo clock speed 1.8 GHz 3 GHz
Cores Dual core Dual core

features

Has a NX bit Yes Yes
Supports trusted computing Yes No
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 40W 17W
Annual home energy cost 9.64 $/year 4.1 $/year
Annual commercial energy cost 35.04 $/year 14.89 $/year
Typical power consumption 32.5W 13.81W

bus

Architecture QPI DMI
Number of links 1 1
Transfer rate 0 MT/s 5,000 MT/s

details

Pentium 1405  vs
Core i7 3517U 
Architecture x86-64 x86-64
Threads 2 4
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache 5 MB 4 MB
L3 cache per core 2.5 MB/core 2 MB/core
Manufacture process 32 nm 22 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 1.8 GHz 2.78 GHz
Overclocked clock speed (Water) 1.8 GHz 1.9 GHz
Overclocked clock speed (Air) 1.8 GHz 2.78 GHz

integrated graphics

GPU None GPU
Label N/A Intel® HD Graphics 4000
Latest DirectX N/A 10.x
Number of displays supported N/A 3
GPU clock speed N/A 350 MHz
Turbo clock speed N/A 1,150 MHz
3DMark06 N/A 5,344.5

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1066
DDR3-800
DDR3
Channels Dual Channel Dual Channel
Supports ECC Yes No
Maximum bandwidth 17,066.66 MB/s 12,800 MB/s
Maximum memory size 384,000 MB 32,768 MB
Intel Pentium 1405
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Intel Core i7 3517U
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