Re: Computer turns on and then just dies

On Sun, 12/1/2024 9:26 AM, VanguardLH wrote:
> s|b <[email protected]> wrote:
> 
>> On Sat, 30 Nov 2024 09:15:48 -0600, VanguardLH wrote:
>>
>>> FYI, Sharkoon doesn't manufacture anything.  They stick their brand on
>>> products made by others.  So does Corsair.
>>
>> I've had good experiences with Corsair.
>>
>>> You already bought the Sharkoon PSU.  Hopefully whomever is the actual
>>> OEM/mfr is a good one for whatever you get.  Sometimes you can see who
>>> is the OEM by looking inside the PSU case, but often the rebrander slaps
>>> their sticker atop the OEMs mark.
>>
>> I don't want to be rude, but I just wanted a cheap PSU and I got one.
>> It's not much, but the 2 reviews it has are both 5 stars. Also, I'm in
>> Europe, so there's a minimum warranty of 2 years.
> 
> Wow, all of 2 reviews.  Were they by technically expertise sites
> reviewing PSUs?  Or just some users reporting in less than a month that
> what they got worked at that time in a hardware configuration they never
> stated?  An example of a more technical review is shown at:
> 
> https://www.youtube.com/watch?v=USXefeaz4vM
> 
> At full load rating, 12V was just under the ATX spec.  At 110% load, the
> PSU failed on 12V to meet the ATX spec.  Unfortunately many PSUs are not
> overbuilt.  This reviewer didn't do sustained load testing to ensure the
> PSU didn't burn up.
> 
> At 45 euro, you really think the warranty means anything?  It'll cost
> you that, and probably a lot more, to ship the PSU back to Sparkoon,
> plus the downtime.
> 
> 80 Plus Bronze is not a great spec for a PSU.  OEMs are allowed to skew
> the testing by letting them hand pick which units to test, and the spec
> omits several key tests.  
> 
> https://www.youtube.com/watch?v=iRpqGF2poJM
> 
> The less efficient the PSU, the more it has to dissipate for the same
> load as a more efficient PSU.  Of course, with more efficiency comes a
> higher price tag.  A hot PSU won't last as long.
> 
> Along with lower efficiency, and not knowing who really made (the OEM)
> of the Sharkoon-branded PSU, is why I suggested running at a max load of
> 70% of the ratings on the sticker on the PSU case.
> 
> https://www.tomshardware.com/news/what-80-plus-levels-mean,36721.html
> 
> Not saying what you bought is bad nor saying it is great.  With a
> "Sharkoon" sticker on the inside, you don't know which OEM is inside.
> You may not need to dismantle the PSU to check the OEM.  Use a
> flashlight to peek through the fan and venting grills.  I could've
> missed it at their web site, but didn't find anything there noting the
> terms of their warranties.  I did find:
> 
> https://m.media-amazon.com/images/I/51OXHqTrbBS.pdf
> 
> With Sharkoon promoting themselves as a gamer's brand, the PSU you got
> might be okay, but 80 Plus Bronze is at the bottom of that spec.  
> 

Bronze is good enough. It doesn't have to be Gold.

The supplies have come a long way, in terms of thermals.
The old ones could be 60% to 70% efficient, and the heat
was just pouring out of them.

The machine across the way, I can't feel any heat coming out
of the PSU when it is doing a backup file compression run.
And that's a bit over 200W of wall power (measured on a
Kill-O-Watt meter).

My daily driver is using a Seasonic Bronze and there isn't usually
a heavy electrical load on that, and that's cool exhaust air
(and almost zero airflow at the moment). Power is 33 watts of wall
power at the moment.

Whereas you remember what the Pentium 4 era was like. The
airflow was higher. The temperature difference was palpable
and a sign of wasted power.

Any 80+ is better than a kick in the head, no matter
whether bronze, gold, platinum.

If you were gaming, and you had a RTX4090 and a 4K screen,
I'm pretty sure you'd feel a bit of heat on the PSU then.
My latest PSU, I don't know if it's even got enough
fan speed, to run at full load. The fan is that weak and sad.

If the power supply fan is too slow for your liking, you can
always keep the computer case pressurized so air will be forced
through it. That's what I've been trying to do on the machine
across the way, is use the case fans to keep the PSU situation
in check (make sure caps are kept cool in it).

   Paul