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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel i5-7640X vs i3-8300

The Intel Core i3-8300 @ 3.70GHz is newer than Intel Core i5-7640X @ 4.00GHz and is around -10% slower in multi-threaded (CPU Mark) testing. The Intel Core i3-8300 @ 3.70GHz is around -11% slower in single-thread testing. Also, Intel Core i3-8300 @ 3.70GHz uses substantially less power. All the CPUs in this comparison belong in the Desktop CPU Class. The values below were tabulated from a combined 153 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 Core i5-7640X @ 4.00GHz×Intel Core i3-8300 @ 3.70GHz+ ADD
Price $145 - BUY $139.99 - BUY
Socket TypeFCLGA2066FCLGA1151-2
CPU ClassDesktopDesktop
Clockspeed4.0 GHz3.7 GHz
Turbo SpeedUp to 4.2 GHzNot Supported
# of Physical Cores4 (Threads: 4)4 (Threads: 4)
CacheL1: 256KB, L2: 1.0MB, L3: 6MBL1: 256KB, L2: 1.0MB, L3: 8MB
TDP112W62W
Yearly Running Cost$20.44$11.32
OtherIntel UHD Graphics 630
First Seen on ChartQ3 2017Q2 2018
# of Samples53100
CPU Value48.745.3
Single Thread Rating(% diff. to max in group)2540(0.0%)2269(-10.7%)
CPU Mark(% diff. to max in group)7060(0.0%)6336(-10.3%)

CPU Mark Rating
As of 19th of July 2025 - Higher results represent better performance
Intel Core i5-7640X @ 4.00GHz
7,060
Intel Core i3-8300 @ 3.70GHz
6,336
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 19th of July 2025 - Higher results represent better value
Intel Core i5-7640X @ 4.00GHz
48.7
Intel Core i3-8300 @ 3.70GHz
45.3
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 19th of July 2025 - Higher results represent better performance
Intel Core i5-7640X @ 4.00GHz
2,540
Intel Core i3-8300 @ 3.70GHz
2,269
PassMark Software © 2008-2025
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 Core i5-7640X @ 4.00GHz Intel Core i3-8300 @ 3.70GHz
Max TDP112W62W
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.