Power Supply PicoPSU Discussion

DefinitelyTech

Efficiency Noob
Original poster
Apr 7, 2019
7
1
So I’m planning out a super compact build that requires a pico PSU. Have a 250W pcb with a 330W laptop adapter and I am curious to everyones experience with them.


Efficiency? Absolute Max Wattage? Safety?


Today I tried to use a janky 300W pico PSU and accidentally shorted a connection, Bricking the board. My system now starts very briefly (CPU FAN BARELY TURNS 180) before stopping.


[Bricked 300W] = https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/232703889102


[Current 250W PSU] = https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/163456808467


Planned for the build is a 2200g and a RX 580 4gb (HP OEM). So thats probably around 200W during gaming pushing 230W during synthetic tests which will pushing the system pretty close.
I know HDPlex 400W exists, I actually use it in a build I should be posting soon, but I need the extra small form psu.


Any thoughts?
 

cleveland

Master of Cramming
Sep 8, 2016
455
240
Why do you have to go with the absolute sh***est DC-ATX option?

We are very experienced, here on the forum, with better built options like HDplex and PicoPSU (the real thing, not the chinese garbage). They are indeed a bit more expensive than the ones you're using, but they are are also certainly safer too.

Just my 2 cents in this conersation: dont go cheap with the PSU. It's hooked up to every piece of hardware in your rig. And looks like you should've already learned the hard way:
My system now starts very briefly (CPU FAN BARELY TURNS 180) before stopping.
 
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Thehack

Spatial Philosopher
Creator
Mar 6, 2016
2,800
3,650
J-hackcompany.com
Someone already mentioned on the subreddit that he used a 19V brick with a 12V picopsu.

Lol. I don't think that helps your case. None of those picos are more than 120W. They inflate the rating. The only rail that really matters is 12V rail.

A 12V system is like 98% efficient, since it just turns on/off the 12V rail. A 19V system is around 96% due to conversion loss.

Here is an actual 400W board:



 
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Choidebu

"Banned"
Aug 16, 2017
1,196
1,204
Said it before, will say it again: half whatever number wattage rating they slap on it. The money is yours to waste, but don't waste even your time.
 
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