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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel i7-990X vs i5-9400T

The Intel Core i5-9400T @ 1.80GHz is newer than Intel Core i7-990X @ 3.47GHz also around 14% faster in multi-threaded (CPU Mark) testing, it is around 25% faster in single-thread testing. However, Intel Core i5-9400T @ 1.80GHz uses substantially less power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 802 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 i7-990X @ 3.47GHz×Intel Core i5-9400T @ 1.80GHz+ ADD
Price $178.02 - BUY Search Online
Socket TypeLGA1366FCLGA1151-2
CPU ClassDesktopDesktop
Clockspeed3.5 GHz1.8 GHz
Turbo SpeedUp to 3.7 GHzUp to 3.4 GHz
# of Physical Cores6 (Threads: 12)6 (Threads: 6)
CacheL1: 384KB, L2: 1.5MB, L3: 12MBL1: 384KB, L2: 1.5MB, L3: 9MB
TDP130W35W
Yearly Running Cost$23.73$6.39
OtherIntel UHD Graphics 630
First Seen on ChartQ1 2011Q3 2019
# of Samples461341
CPU Value40.045.6
Single Thread Rating(% diff. to max in group)1574(-25.2%)2105(0.0%)
CPU Mark(% diff. to max in group)7119(-14.2%)8295(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 2nd of April 2025 - Higher results represent better performance
Intel Core i7-990X @ 3.47GHz
7,119
Intel Core i5-9400T @ 1.80GHz
8,295
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 2nd of April 2025 - Higher results represent better value
Intel Core i7-990X @ 3.47GHz
40.0
Intel Core i5-9400T @ 1.80GHz
45.6
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 2nd of April 2025 - Higher results represent better performance
Intel Core i7-990X @ 3.47GHz
1,574
Intel Core i5-9400T @ 1.80GHz
2,105
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 i7-990X @ 3.47GHz Intel Core i5-9400T @ 1.80GHz
Max TDP130W35W
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.