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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel i5-7640X vs i3-8350K

The Intel Core i3-8350K @ 4.00GHz is newer than Intel Core i5-7640X @ 4.00GHz and has comparable multi-threaded (CPU Mark) and single-thread rating. However, Intel Core i5-7640X @ 4.00GHz uses around 21% more power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 442 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 i3-8350K @ 4.00GHz+ ADD
Price Search Online Search Online
Socket TypeFCLGA2066FCLGA1151-2
CPU ClassDesktopDesktop
Clockspeed4.0 GHz4.0 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
TDP112W91W
Yearly Running Cost$20.44$16.61
OtherIntel UHD Graphics 630
First Seen on ChartQ3 2017Q4 2017
# of Samples51391
CPU Value0.00.0
Single Thread Rating(% diff. to max in group)2531(0.0%)2461(-2.8%)
CPU Mark(% diff. to max in group)6995(0.0%)6863(-1.9%)

CPU Mark Rating
As of 18th of April 2025 - Higher results represent better performance
Intel Core i5-7640X @ 4.00GHz
6,995
Intel Core i3-8350K @ 4.00GHz
6,863
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 18th of April 2025 - Higher results represent better performance
Intel Core i5-7640X @ 4.00GHz
2,531
Intel Core i3-8350K @ 4.00GHz
2,461
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 i3-8350K @ 4.00GHz
Max TDP112W91W
Power consumption per day (kWh)0.220.18
Running cost per day$0.056$0.045
Power consumption per year (kWh)81.866.4
Running cost per year$20.44$16.61
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.