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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel i5-8400T vs i7-3820

The Intel Core i5-8400T @ 1.70GHz is newer than Intel Core i7-3820 @ 3.60GHz also around 23% faster in multi-threaded (CPU Mark) testing, it is around 9% faster in single-thread testing. However, Intel Core i5-8400T @ 1.70GHz uses substantially less power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 3430 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 i7-3820 @ 3.60GHz+ ADD
Price $139 - BUY Search Online
Socket TypeFCLGA1151-2LGA2011
CPU ClassDesktopDesktop
Clockspeed1.7 GHz3.6 GHz
Turbo SpeedUp to 3.3 GHzUp to 3.8 GHz
# of Physical Cores6 (Threads: 6)4 (Threads: 8)
CacheL1: 384KB, L2: 1.5MB, L3: 9MBL1: 256KB, L2: 1.0MB, L3: 10MB
TDP35W130W
Yearly Running Cost$6.39$23.73
OtherIntel UHD Graphics 630
First Seen on ChartQ2 2018Q1 2012
# of Samples3363094
CPU Value53.638.2
Single Thread Rating(% diff. to max in group)1920(0.0%)1745(-9.1%)
CPU Mark(% diff. to max in group)7450(0.0%)5769(-22.6%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 26th of November 2024 - Higher results represent better performance
Intel Core i5-8400T @ 1.70GHz
7,450
Intel Core i7-3820 @ 3.60GHz
5,769
PassMark Software © 2008-2024
CPU Value (CPU Mark / $Price)
As of 26th of November 2024 - Higher results represent better value
Intel Core i5-8400T @ 1.70GHz
53.6
Intel Core i7-3820 @ 3.60GHz
38.2
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 26th of November 2024 - Higher results represent better performance
Intel Core i5-8400T @ 1.70GHz
1,920
Intel Core i7-3820 @ 3.60GHz
1,745
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 i7-3820 @ 3.60GHz
Max TDP35W130W
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.