My Corsair SF750 Power Supply died on my again! Recommendations for Replacement?

[artbywaqas]

Hey Guys,

This now my 2nd SF750 that died on me. Hopefully they'll replace it again.

Is there not any better option for a small form factor computer ?

I have the cerberus case so I need a small form factor power supply.

[Founders]

Seasonic FOCUS SGX-650

[Firewrath9]

EVGA 650 GM, but the SF750 Platinum should be the best of the best SFX, unless you want to step up to SFX-L and Titanium.

[Acquire]

There is no true alternative to the Corsair SF750 unfortunately.  At that power range they're all SFX-L and Gold rating.  The seasonic linked above is the next best thing.   I'm on my second SF750.  Hopefully this one lasts longer than 5 months.

[artbywaqas]

Well here are the specs on my computer:

https://pcpartpicker.com/user/Artbywaqas/saved/48YNqs

https://smallformfactor.net/forum/threads/my-1st-custom-build-cerberus-3d-workstation.11001/#post-159011

Intel Core i9-9900K 3.6 GHz 8-Core Processor

Asus GeForce RTX 2080 8 GB ROG Strix Gaming OC Video Card

MSI MPG Z390M GAMING EDGE AC Micro ATX LGA1151 Motherboard

Corsair Vengeance LPX 64 GB (4 x 16 GB) DDR4-3200 Memory

I did turn off overclocking so the CPU is running at the CPU at base speed 3600Mhz
The maximium temperature it goes to when rendering is 62/. otherwise the computer is really cool around 44  think.

I was thinking maybe this power supply may not be enough to power these components. It seems like alot of people are complaining about all of the SFX style power supplies on Amazon dying on them or even sometimes burning out and damaging the rest of their components!?

With my first power supply my computer just wouldn't power on one day.

This time it randomly restarted one day while the computer was idle? 
I thought maybe it could be some kind of driver issue so I made sure the graphics card driver was updated. 

So once in a while it would restart. But now this friday morning it shut down. It would not power on at all. Then when I came back in the evening it was on by itself !?  However when I logged into Windows it would just keep restarting and not even make it to the windows log in screen. 

That's pretty much what it's doing now. If it lets me log in it will either restart right away or after a bit. Then it gets stuck constantly restarting. I had to unplug it to get it to stop.

This is even after I turned off the automatic restart option.
 

[Guest]

35 minutes ago, artbywaqas said:

I was thinking maybe this power supply may not be enough to power these components.

 

If the PSU wasn't powerful enough, it's not meant to self destruct.  It should just shut down.

 

Maybe the PSU is overheating?  It has OTP and should shut down if it gets too hot, though.  It shouldn't just die.

 

You are allowing the PSU to get adequate airflow, right?  What case do you have and how is the PSU installed?

 

38 minutes ago, artbywaqas said:

The maximium temperature it goes to when rendering is 62/. otherwise the computer is really cool around 44  think.

 

That's the temperature of what, taken from where?

 

36 minutes ago, artbywaqas said:

It seems like alot of people are complaining about all of the SFX style power supplies on Amazon dying on them or even sometimes burning out and damaging the rest of their components!?

 

News to me.

 

RMA rate on the SF750 is < 1%.  And Corsair uses the SF750 in their Corsair ONE PC's and I can't recall a single one of those coming back due to a dead PSU.

[FALC0N]

1 hour ago, artbywaqas said:

With my first power supply my computer just wouldn't power on one day.

This time it randomly restarted one day while the computer was idle? 
I thought maybe it could be some kind of driver issue so I made sure the graphics card driver was updated. 

So once in a while it would restart. But now this friday morning it shut down. It would not power on at all. Then when I came back in the evening it was on by itself !?  However when I logged into Windows it would just keep restarting and not even make it to the windows log in screen. 

That's pretty much what it's doing now. If it lets me log in it will either restart right away or after a bit. Then it gets stuck constantly restarting. I had to unplug it to get it to stop.

This is even after I turned off the automatic restart option.
 

 

I'm not convinced that this is a PSU issue.

[artbywaqas]

 

@jonnyGURU
 

 

that's the CPU temperatures according to Speccy.

It's the Cerberus case.

Here it is open

https://imgur.com/a/135vzIo#wqG7t8t

The power supply is in the front and the fan is front facing.

https://www.sliger.com/products/cases/cerberus/

In the end there is a big metal panel that goes in the front of the case.

@FALCON

That would be great! But how do I figure out what's wrong?

[FALC0N]

1 hour ago, artbywaqas said:

That would be great! But how do I figure out what's wrong?

 

Was this your first build?

[artbywaqas]

@Falcon

 

 

Yes this is my first build but I've upgraded and transferred my other computers to new cases so I'm not a total noob.

 

What I meant is Windows is not showing me any error messages in the Event Viewer and there is no bluescreening happening,

 

Anyhow after  searching for advice on computers just restarting randomly here's what I tried:

 

1. Checked all connections. They were good

 

2. Sprayed everything for dust. There really wasn't any inside the computer at all. The filters  in the front and bottom of the case caught it all.

 

3. Disabled automatic restarts.

 

 

 

Anyhow amazingly since Tuesday my computer seems ok.

 

I haven’t tried doing any rendering as I need to have my computer up and running so I can work. I did open one of my projects in Unreal and was able to run around in it no problem. Before my computer was shutting down when I tried to run it.

 

Getting back to your comment about my experience with building computers I started thinking maybe I have done something wrong

 

I didn't realize that the power supply actually sucks in air. I think this filter is blocking the airflow and causing the problem as there is no way to check  the power supply temperature?

 

I put the filter in front of a tabletop fan to see just how much air it blocks and yeah it pretty much blocks it all.

 

https://imgur.com/a/thzqEcF

 

The power supply is in  the front facing forward on the top.  The big dust accumulation on the filter is due to the fan right below it.

 

https://imgur.com/j0Rjsai

 

 

 

Here are the fans and cooler for the CPU. They are set up so that the air is going from the front of the case through to the back

 

https://imgur.com/40EnbLt

 

 

 

 

Case Airflow

 

 

https://imgur.com/5W5CzMk

 

Like I said for now everything seems to be working fine.

 

I'm wondering if I should turn the power supply so the fan is facing the inside. But then the  CPU fans are sucking air in the opposite direction. Wouldn’t this possibly prevent air from going into the power supply fan?

 

The temperature is really cool inside the case. 

 

 

 

Anyhow when I have the time I will try  rendering a project after taking  off the front panel and filter.

 

Do you think I need to take the front panel off ( all the time now) or just removing the filter is enough?

 

https://imgur.com/YX7Dyat

 

My last concern is the amount of dust on the filter. If I take it off all that dust will be inside power supply. 

 

I'm thinking I  can cut the filter in half to still cover the fan area at least.

 

 

Thoughts ? Suggestions?

[Guest]

2 hours ago, artbywaqas said:

 

Anyhow amazingly since Tuesday my computer seems ok.

 

Waaaaait a minute.....

 

So the PSU you thought was dead is now working?

 

What made you think it was dead in the first place?  What happened... or what didn't happen?

 

If you think the filter is too restrictive, you can always flip the PSU around so it's sucking air from the inside of the case.

 

Maybe also reverse the airflow of the CPU cooler so that air is going front to back.