can a cheap power supply cause performance drop in cpu? 450 watt

[220VoltsallCore]

there are no problems or crash

but i5 8400 scores much less than the expected score of cinebench

temps are ok with a stock fan

and power draw is not exceeding 50 watts

mobo H310M-H-20

https://www.gigabyte.com/Motherboard/H310M-H-20-rev-10#kf

running 2666 8gb*2 

[tkitch]

what clock speeds are you getting while running cinebench?

 

and what temps while running cinebench?

 

Use HWInfo64 to monitor those

[220VoltsallCore]

24 minutes ago, tkitch said:

what clock speeds are you getting while running cinebench?

 

and what temps while running cinebench?

 

Use HWInfo64 to monitor those

3.79 ghz and under 60 using hwinfo

[leclod]

How much less than the expected score of cinebench ?

[220VoltsallCore]

13 hours ago, leclod said:

How much less than the expected score of cinebench ?

 

14 hours ago, leclod said:

How much less than the expected score of cinebench ?

251 /283

https://www.cpu-monkey.com/en/cpu-intel_core_i5_8400

[leclod]

2 hours ago, 220VoltsallCore said:

251 /283

That sounds normal, my 12400 doesn't reach it's mark either, 675 vs 701.

Did you stop every stoppable process in the background before starting the bench ?

Is your cpu cooled enough ?

The psu has nothing to do with that.

Edited March 23 by leclod