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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel i7-7740X vs i5-9400

The Intel Core i5-9400 @ 2.90GHz is newer than Intel Core i7-7740X @ 4.30GHz, while the multi-threaded (CPU Mark) is simliar, Intel Core i7-7740X @ 4.30GHz is around 10% faster in single-thread testing. However, Intel Core i5-9400 @ 2.90GHz uses substantially less power. All the CPUs in this comparison belong in the Desktop CPU Class.The values below were tabulated from a combined 2104 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 i7-7740X @ 4.30GHz×Intel Core i5-9400 @ 2.90GHz+ ADD
Price $156.14 - BUY $135.69 - BUY
Socket TypeFCLGA2066FCLGA1151-2
CPU ClassDesktopDesktop
Clockspeed4.3 GHz2.9 GHz
Turbo SpeedUp to 4.5 GHzUp to 4.1 GHz
# of Physical Cores4 (Threads: 8)6 (Threads: 6)
CacheL1: 256KB, L2: 1.0MB, L3: 8MBL1: 384KB, L2: 1.5MB, L3: 9MB
TDP112W65W
Yearly Running Cost$20.44$11.86
OtherIntel UHD Graphics 630
First Seen on ChartQ3 2017Q1 2019
# of Samples2181886
CPU Value61.669.2
Single Thread Rating(% diff. to max in group)2692(0.0%)2435(-9.5%)
CPU Mark(% diff. to max in group)9612(0.0%)9394(-2.3%)

CPU Mark Rating
As of 26th of February 2025 - Higher results represent better performance
Intel Core i7-7740X @ 4.30GHz
9,612
Intel Core i5-9400 @ 2.90GHz
9,394
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 26th of February 2025 - Higher results represent better value
Intel Core i7-7740X @ 4.30GHz
61.6
Intel Core i5-9400 @ 2.90GHz
69.2
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 26th of February 2025 - Higher results represent better performance
Intel Core i7-7740X @ 4.30GHz
2,692
Intel Core i5-9400 @ 2.90GHz
2,435
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 i7-7740X @ 4.30GHz Intel Core i5-9400 @ 2.90GHz
Max TDP112W65W
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.