Intel Core i5-9400F

Based on 13 reportsCPUIntelMid-rangeMost recent submission: Nov 6, 2026

The Intel Core i5-9400F runs at an average of 68.5°C under load based on 13 community submissions. The hottest 10% of submissions report temperatures above 78°C, while the coolest 10% stay below 54°C. Idle temperatures average 49.1°C.

Runs normal

Average load temp is in line with the typical mid-range baseline of 70°C.

Specifications

Manufacturer: Intel

Idle Temperature

49.1°C

Cool

Coolest 10%

37.0°C

Typical

46.0°C

Hottest 10%

64.0°C

Load Temperature

68.5°C

Warm

Coolest 10%

54.0°C

Typical

73.0°C

Hottest 10%

78.0°C

Load temperature distribution

50–60°C

60–70°C

70–80°C

90–100°C

Load Temperature Distribution

20°C60°C100°C

Coolest 10%: 54°CTypical: 73°CHottest 10%: 78°C

Is your temperature normal?

Below 54°C — cooler than 90% of submissions for this hardware. Excellent cooling.
Between 54°C and 78°C — within the typical range for this hardware.
Above 78°C — hotter than 90% of submissions. Worth investigating: thermal paste, cooler mount, dust, or case airflow.
Above 90°C — at or beyond the safe operating ceiling for this tier. Reduce load, check cooling, and consider professional inspection.

Submissions over time

2026-052026-11

Load temperature by ambient

Cool room (≤20°C)

74.0°C1 submission

Warm room (≥26°C)

63.5°C2 submissions

Coolest Intel Core i5-9400F PCs

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Coldest run

51.0°C

Aftermarket Air Cooler cooling·Oct 11, 2026

Hottest run

97.0°C

Stock Cooler cooling·Aug 23, 2026

Cooling Comparison

Aftermarket Air Cooler

59.8°C4 reports

AIO Liquid Cooler

60.0°C1 report

Stock Cooler

73.9°C8 reports

What's normal for this tier?

Mid-range CPUs are well within thermal headroom on stock or basic aftermarket coolers, usually 60–80°C under load. Anything consistently above 85°C warrants a cooling check.

Compare with similar hardware

Other mid-range CPUs from Intel

Intel Core i5-1440068.0°C

9 reports

Intel Core i5-13400100.5°C

1 report

Intel Core i5-1240074.0°C

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Intel Core i5-12400F59.0°C

31 reports

Intel Core i5-10400F66.0°C

36 reports

Intel Core i5-650081.0°C

7 reports

Ambient room temperature affects readings. Average reported ambient: 25°C.

Device Types

desktop13 reports

CPU Coolers

2 of 13 desktop reports named the CPU cooler.

By manufacturer

Cooler Master

By model

Avg load

Cooler Master 1201 report73.5°C
Cooler Master MasterLiquid ML120L V21 report60.0°C

Recent Submissions

Date	Cooling	Idle	Load
Nov 6, 2026	Aftermarket Air Cooler	46.0°C	54.0°C
Nov 2, 2026	Stock Cooler	37.0°C	65.0°C
Nov 2, 2026	Stock Cooler	52.0°C	74.0°C
Oct 29, 2026	AIO Liquid CoolerCooler Master MasterLiquid ML120L V2	41.0°C	60.0°C
Oct 29, 2026	Aftermarket Air Cooler	51.0°C	56.0°C

Frequently asked questions

What is a normal temperature for the Intel Core i5-9400F?

Based on 13 community submissions, the Intel Core i5-9400F runs at an average idle temperature of 49.1°C and an average load temperature of 68.5°C. Anything between 54°C and 78°C under load is within the typical range for this hardware.

Is 68.5°C too hot for the Intel Core i5-9400F?

The safe operating ceiling for mid-range CPUs like the Intel Core i5-9400F is around 90°C under sustained load. 68.5°C is within the safe operating range. If you're exceeding 90°C, check thermal paste, cooler mounting, dust buildup, and case airflow.

What is the best cooler for the Intel Core i5-9400F?

For a 70W mid-range CPU like the Intel Core i5-9400F, a quality 240mm AIO or a high-end dual-tower air cooler (Noctua NH-D15, Thermalright Phantom Spirit) is generally sufficient to keep load temperatures well within safe limits. Higher TDP variants (overclocked or PBO-enabled) benefit from 360mm AIO cooling.

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