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Intel i5-8400T vs i3-8300T

The Intel Core i3-8300T @ 3.20GHz is newer than Intel Core i5-8400T @ 1.70GHz, while Intel Core i5-8400T @ 1.70GHz is around 23% faster in multi-threaded (CPU Mark) testing but the CPUs have comparable single-thread rating. However, Intel Core i5-8400T @ 1.70GHz uses around 33% more power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 375 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 i5-8400T @ 1.70GHz×Intel Core i3-8300T @ 3.20GHz+ ADD
Price Search Online Search Online
Socket TypeFCLGA1151-2FCLGA1151-2
CPU ClassDesktopDesktop
Clockspeed1.7 GHz3.2 GHz
Turbo SpeedUp to 3.3 GHzNot Supported
# of Physical Cores6 (Threads: 6)4 (Threads: 4)
CacheL1: 384KB, L2: 1.5MB, L3: 9MBL1: 256KB, L2: 1.0MB, L3: 8MB
TDP35W25W
Yearly Running Cost$6.39$4.56
OtherIntel UHD Graphics 630Intel UHD Graphics 630
First Seen on ChartQ2 2018Q2 2018
# of Samples33837
CPU Value53.636.2
Single Thread Rating(% diff. to max in group)1920(-3.4%)1987(0.0%)
CPU Mark(% diff. to max in group)7451(0.0%)5749(-22.8%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 1st of December 2024 - Higher results represent better performance
Intel Core i5-8400T @ 1.70GHz
7,451
Intel Core i3-8300T @ 3.20GHz
5,749
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 1st of December 2024 - Higher results represent better value
Intel Core i5-8400T @ 1.70GHz
53.6
Intel Core i3-8300T @ 3.20GHz
36.2
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 1st of December 2024 - Higher results represent better performance
Intel Core i5-8400T @ 1.70GHz
1,920
Intel Core i3-8300T @ 3.20GHz
1,987
PassMark Software © 2008-2024
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 i5-8400T @ 1.70GHz Intel Core i3-8300T @ 3.20GHz
Max TDP35W25W
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.