Randomly turn off and on

[Ikmal Izzat Johari]

The pc randomly turn off and on immediately afterwards. Sometimes it can go a whole day without this happening while sometimes it just take about 2-3 hours to happen. It does happen at idle and while gaming

Full specs

Case : Silverstone RVZ01
PSU : Silverstone SFX 450w Gold
CPU : i5 4440
GPU : Gainward GTX 970 reference
RAM : HyperX Savage 8Gb
MOBO : Asrock H97 ITX/AC
HDD : Seagate Barracuda 2Tb
Monitor : Benq EW2440L -

Case fans : stock comes with case
CPU fans : stock intel
Wifi and Bluetooth : comes with mobo

Keyboard : Corsair K70 RGB
Mouse : Corsair Raptor M45

 

[theyeti87]

My immediate thoughts on your issues are

1) Heating issue. For instance, if the CPU overheats the system will reboot without prompt.
2) It could be your PSU isn't beefy enough for all your components. a 450w PSU running that 970 is really cutting it close on energy consumption / provision.

Can you provide us with system temperatures, ambient temperature, load/idle temps?

 

[Ikmal Izzat Johari]

My immediate thoughts on your issues are

1) Heating issue. For instance, if the CPU overheats the system will reboot without prompt.
2) It could be your PSU isn't beefy enough for all your components. a 450w PSU running that 970 is really cutting it close on energy consumption / provision.

Can you provide us with system temperatures, ambient temperature, load/idle temps?

I'm not sure how to check it other than HWMonitor. Most of the time it's just 45-55 C at idle or mild activities (browsing internet and streaming)

 

[theyeti87]

Your CPU is idling 45-55C?

Can you get a reading on what the temps are at on the CPU when it is under load, i.e. gaming?

 

[Ikmal Izzat Johari]

Your CPU is idling 45-55C?

yes it is.

 

[adamsunderwood]

It's almost definitely a PSU issue. That CPU should be fine at up to around 72C. But a 450W power supply just isn't enough for a GTX 970, for which NVidia recommends a 500W minimum, though I'd recommend at least a 600W for some breathing room (I'd probably go with a Corsair CX600, to be more specific).

 

[Ikmal Izzat Johari]

Your CPU is idling 45-55C?

Can you get a reading on what the temps are at on the CPU when it is under load, i.e. gaming?

around 65 C

 

[Ikmal Izzat Johari]

It's almost definitely a PSU issue. That CPU should be fine at up to around 72C. But a 450W power supply just isn't enough for a GTX 970, for which NVidia recommends a 500W minimum, though I'd recommend at least a 600W for some breathing room (I'd probably go with a Corsair CX600, to be more specific).

sigh I was hoping for not a new PSU. Then again I shouldn't be cutting corners in the first place. My only option is the SFX Series from Silverstone. is 550w is enough or should I get the 600w ?