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Differences What are the advantages of each

Front view of Intel Pentium G2020

Reasons to consider the
Intel Pentium G2020

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Much higher clock speed 2.9 GHz vs 1.2 GHz Around 2.5x 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
Significantly better overclocked clock speed (Air) 3.03 GHz vs 1.8 GHz Around 70% better overclocked clock speed (Air)
Significantly better overclocked clock speed (Water) 3.1 GHz vs 1.8 GHz More than 70% better overclocked clock speed (Water)
Newer Jan, 2013 vs Apr, 2012 Release date 9 months later
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
Significantly more l3 cache per core 2.5 MB/core vs 1.5 MB/core More than 65% more l3 cache per core
Slightly more l3 cache 5 MB vs 3 MB More than 65% more l3 cache; more data can be stored in the l3 cache for quick access later
Lower typical power consumption 32.5W vs 44.69W More than 25% lower typical power consumption
Supports more RAM 384,000 MB vs 32,768 MB Supports around 11.8x more RAM
Lower annual home energy cost 9.64 $/year vs 13.25 $/year More than 25% lower annual home energy cost
Lower annual commercial energy cost 35.04 $/year vs 48.18 $/year More than 25% lower annual commercial energy cost

Features Key features of the Pentium G2020  vs 1405 

clock speed

Pentium G2020
2.9 GHz
Pentium 1405
1.2 GHz

L2 cache

L3 cache

overclocked clock speed (air)

Pentium G2020
3.03 GHz
Pentium 1405
1.8 GHz

overclocked clock speed (water)

Pentium G2020
3.1 GHz
Pentium 1405
1.8 GHz

Specifications Full list of technical specs

summary

Pentium G2020  vs
1405 
Clock speed 2.9 GHz 1.2 GHz
Cores Dual core Dual 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 55W 40W
Annual home energy cost 13.25 $/year 9.64 $/year
Annual commercial energy cost 48.18 $/year 35.04 $/year
Typical power consumption 44.69W 32.5W

bus

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

details

Pentium G2020  vs
1405 
Architecture x86-64 x86-64
Threads 2 2
L2 cache 1 MB 1 MB
L2 cache per core 0.5 MB/core 0.5 MB/core
L3 cache 3 MB 5 MB
L3 cache per core 1.5 MB/core 2.5 MB/core
Manufacture process 22 nm 32 nm
Max CPUs 1 1

overclocking

Overclocked clock speed 3.03 GHz 1.8 GHz
Overclocked clock speed (Water) 3.1 GHz 1.8 GHz
Overclocked clock speed (Air) 3.03 GHz 1.8 GHz

integrated graphics

GPU GPU None
Label Intel® HD Graphics N/A
Number of displays supported 3 N/A
GPU clock speed 650 MHz N/A
Turbo clock speed 1,050 MHz N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1333
DDR3-1066
DDR3
DDR3-800
Channels Dual Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 21,333.32 MB/s 17,066.66 MB/s
Maximum memory size 32,768 MB 384,000 MB
Intel Pentium G2020
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Intel Pentium 1405
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