iconcharts
0

CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Pentium G2120 vs Pentium G645

The Intel Pentium G2120 @ 3.10GHz is newer than Intel Pentium G645 @ 2.90GHz and is around 28% faster in multi-threaded (CPU Mark) testing. The Intel Pentium G2120 @ 3.10GHz is around 26% faster in single-thread testing. Also, Intel Pentium G645 @ 2.90GHz uses around 17% more power. All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 648 benchmarks submitted from our PerformanceTest software and results and are updated daily to include new submissions.

  • The first section will show basic information for each CPU selected.
  • The additional graphs shows the CPU Mark and Single Thread values of each CPU selected.
  • An accompany graph, if price data is available, will shows the value for money, in terms of the CPU Mark/Thread Rating per dollar.
  • The last section will show approximate yearly running costs for the CPUs.

×Intel Pentium G2120 @ 3.10GHz×Intel Pentium G645 @ 2.90GHz+ ADD
Price $81.95 - BUY Search Online
Socket TypeFCLGA1155LGA1155
CPU ClassDesktopDesktop
Clockspeed3.1 GHz2.9 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores2 (Threads: 2)2 (Threads: 2)
CacheL1: 128KB, L2: 0.5MB, L3: 3MBL1: 128KB, L2: 0.5MB, L3: 3MB
TDP55W65W
Yearly Running Cost$10.04$11.86
Other
First Seen on ChartQ4 2012Q1 2012
# of Samples229419
CPU Rank36984009
CPU Value22.917.8
Single Thread Rating(% diff. to max in group)1701(0.0%)1349(-20.7%)
CPU Mark(% diff. to max in group)1873(0.0%)1459(-22.1%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 17th of February 2026 - Higher results represent better performance
Intel Pentium G2120 @ 3.10GHz
1,873
Intel Pentium G645 @ 2.90GHz
1,459
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 17th of February 2026 - Higher results represent better value
Intel Pentium G2120 @ 3.10GHz
22.9
Intel Pentium G645 @ 2.90GHz
17.8
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 17th of February 2026 - Higher results represent better performance
Intel Pentium G2120 @ 3.10GHz
1,701
Intel Pentium G645 @ 2.90GHz
1,349
PassMark Software © 2008-2026
Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per day Average CPU Utilization (0-100%)1 Power cost, $ per kWh2
8
25
1Average user usage is typically low and can vary from task to task. An estimate load 25% is nominal.
2Typical power costs vary around the world. Check your last power bill for details. Values of $0.15 to $0.45 per kWh are typical.
Intel Pentium G2120 @ 3.10GHz Intel Pentium G645 @ 2.90GHz
Max TDP55W65W
Power consumption per day (kWh)NANA
Running cost per dayNANA
Power consumption per year (kWh)NANA
Running cost per yearNANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.