CPUBoss Review Our evaluation of G645 vs G2020


Benchmark performance using all cores

Passmark, GeekBench (32-bit) and GeekBench (64-bit)

Single-core Performance

Individual core benchmark performance

Passmark (Single Core)


How much speed can you get out of the processor?

Passmark (Overclocked), Maximum Overclocked Clock Speed (Air) and 2 more


Are you paying a premium for performance?

Performance Per Dollar

No winner declared

Too close to call

Cast your vote Do you agree or disagree with CPUBoss?

Thanks for adding your opinion. Follow us on Facebook to stay up to date with the latest news!

Differences What are the advantages of each

Front view of Intel Pentium G645

Reasons to consider the
Intel Pentium G645

Report a correction
Higher GPU clock speed 850 MHz vs 650 MHz More than 30% higher GPU clock speed
Better turbo clock speed 1,100 MHz vs 1,050 MHz Around 5% better turbo clock speed
Front view of Intel Pentium G2020

Reasons to consider the
Intel Pentium G2020

Report a correction
Newer manufacturing process 22 nms vs 32 nms A newer manufacturing process allows for a more powerful, yet cooler running processor
More number of displays supported 3 vs 2 1 more number of displays supported
Better performance per dollar 10.55 pt/$ vs 7.17 pt/$ More than 45% better performance per dollar
Lower typical power consumption 44.69W vs 52.81W More than 15% lower typical power consumption
Better PassMark (Overclocked) score 2,960.3 vs 2,170.6 More than 35% better PassMark (Overclocked) score
Slightly better performance per watt 8.05 pt/W vs 6.18 pt/W More than 30% better performance per watt
Newer Jan, 2013 vs Sep, 2012 Release date 4 months later
Lower annual commercial energy cost 48.18 $/year vs 56.94 $/year More than 15% lower annual commercial energy cost
Lower annual home energy cost 13.25 $/year vs 15.66 $/year More than 15% lower annual home energy cost

Benchmarks Real world tests of Pentium G645 vs G2020

Passmark (Single Core)

Specifications Full list of technical specs


Pentium G645  vs
Clock speed 2.9 GHz 2.9 GHz
Cores Dual core Dual core
Socket type
LGA 1155
Is hyperthreaded No No


Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes Yes
Supplemental SSE3
Supports dynamic frequency scaling Yes Yes


Label Intel® HD Graphics Intel® HD Graphics
Number of displays supported 2 3
GPU clock speed 850 MHz 650 MHz
Turbo clock speed 1,100 MHz 1,050 MHz

memory controller

Memory controller Built-in Built-in
Memory type
Channels Dual Channel Dual Channel
Maximum bandwidth 17,066.66 MB/s 21,333.32 MB/s
Maximum memory size 32,768 MB 32,768 MB


Pentium G645  vs
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 3 MB
L3 cache per core 1.5 MB/core 1.5 MB/core
Manufacture process 32 nms 22 nms
Max CPUs 1 1
Clock multiplier 29 29


Overclock popularity 0 3
Overclocked clock speed 3.02 GHz 3.04 GHz
Overclocked clock speed (Water) 2.9 GHz 2.9 GHz
PassMark (Overclocked) 2,170.6 2,960.3
Overclocked clock speed (Air) 3.02 GHz 3.04 GHz

power consumption

TDP 65W 55W
Annual home energy cost 15.66 $/year 13.25 $/year
Annual commercial energy cost 56.94 $/year 48.18 $/year
Performance per watt 6.18 pt/W 8.05 pt/W
Typical power consumption 52.81W 44.69W


Architecture DMI DMI
Number of links 1 1
Transfer rate 5,000 MT/s 5,000 MT/s
Intel Pentium G645
Report a correction
Intel Pentium G2020
Report a correction


comments powered by Disqus