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Intel Pentium G645 vs Pentium E5800

The Intel Pentium E5800 @ 3.20GHz is newer than Intel Pentium G645 @ 2.90GHz and is around -18% slower in multi-threaded (CPU Mark) testing. However the CPUs have comparable single-thread rating. Both CPUs operates at simliar power levels (TDP). All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 1200 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 G645 @ 2.90GHz×Intel Pentium E5800 @ 3.20GHz+ ADD
Price Search Online $100.19 - BUY
Socket TypeLGA1155LGA775
CPU ClassDesktopDesktop
Clockspeed2.9 GHz3.2 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores2 (Threads: 2)2 (Threads: 2)
CacheL1: 128KB, L2: 0.5MB, L3: 3MBL1: 128KB, L2: 2.0MB, L3: 0MB
TDP65W65W
Yearly Running Cost$11.86$11.86
Other
First Seen on ChartQ1 2012Q1 2012
# of Samples423777
CPU Rank40254270
CPU Value17.911.9
Single Thread Rating(% diff. to max in group)1349(0.0%)12823(-5.0%)
CPU Mark(% diff. to max in group)1464(0.0%)1193(-18.5%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.
3 - Single thread rating may be higher than the overall rating, thread performance is just one component of the CPU Mark.

CPU Mark Rating
As of 10th of March 2026 - Higher results represent better performance
Intel Pentium G645 @ 2.90GHz
1,464
Intel Pentium E5800 @ 3.20GHz
1,193
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 10th of March 2026 - Higher results represent better value
Intel Pentium G645 @ 2.90GHz
17.9
Intel Pentium E5800 @ 3.20GHz
11.9
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 10th of March 2026 - Higher results represent better performance
Intel Pentium G645 @ 2.90GHz
1,349
Intel Pentium E5800 @ 3.20GHz
1,282
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 G645 @ 2.90GHz Intel Pentium E5800 @ 3.20GHz
Max TDP65W65W
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.