Project: 5.2L MINI PC 250W (Brickless)

LuKO

Efficiency Noob
Original poster
Feb 16, 2019
7
7
Hello,
this is my project 5.2L mini 250W brickless PC for my girlfriend.

Specification:

MOBO: H310M-ITX/ac
CPU: Intel® Pentium® Gold G5400 Processor
CPU Cooler: IS-40X from ID-COOLING
GPU: GeForce® GTX 1050 OC Low Profile 2G
RAM: 8GB DDR4 KIT (2X 4GB) 2400MHz DIMM from Kllisre (Aliexpress)
SSD: Crucial MX300 M.2 2280 275GB SATA III
PSU: 250W - 12V/ 20.8A LED Power Supply from SANPU (Aliexpress) + 12V 250W Pico PSU from RGeek (Aliexpress)
CASE: HTPC MINI ITX Case 21*26*9.5cm 5.2L from Aliexpress

Case need some mods for fit LED PSU ( cut out front panel HDD led ) and IEC C14 Power Plug (drill hole for connector)

Links for Aliexpress parts:
RAM:
https://www.aliexpress.com/item/Kll...868.html?spm=a2g0s.9042311.0.0.27424c4dwBUKzY
12V 250W LED PSU:
https://www.aliexpress.com/item/IWH...822.html?spm=a2g0s.9042311.0.0.3a874c4dpipTc0
12V 250W Pico PSU:
https://www.aliexpress.com/item/24p...978.html?spm=a2g0s.9042311.0.0.3ef84c4dKmdEQq
IEC C14 EMI filter :
https://www.aliexpress.com/item/pan...867.html?spm=a2g0s.9042311.0.0.13764c4dKfJhbm
CASE:
https://www.aliexpress.com/item/Bes...423.html?spm=a2g0s.9042311.0.0.44084c4dKNRhtu

PS: sorry for my bad english, I am from Slovakia :D

PHOTOS:
 
Last edited:

Valantar

Shrink Way Wielder
Jan 20, 2018
1,816
1,739
Nice build! A word of warning: particularly for the Aliexpress PICOPSU knockoffs, I wouldn't trust them to sustain their full rating - they simply don't have the input or output wire gauge for that kind of wattage. For your build it ought to be perfectly fine, though, as it'll likely be closer to 100W than 200 under load.

It might also be an idea to stick a filter capacitor across the DC output of the AC-DC PSU - without a datasheet there's no telling whether this is even remotely close to ATX ripple compliance (120mV p-p for 12V), and it's a shame to lose hardware (or more likely, experience instability) due to an out-of-spec PSU.
 
Last edited:

LuKO

Efficiency Noob
Original poster
Feb 16, 2019
7
7
Nice build! A word of warning: particularly for the Aliexpress PICOPSU knockoffs, I wouldn't trust them to sustain their full rating - they simply don't have the input or output wire gauge for that kind of wattage. For your build it ought to be perfectly fine, though, as it'll likely be closer to 100W than 200 under load.

It might also be an idea to stick a filter capacitor across the DC output of the AC-DC PSU - without a datasheet there's no telling whether this is even remotely close to ATX ripple compliance (120mV p-p for 12V), and it's a shame to lose hardware (or more likely, experience instability) due to an out-of-spec PSU.
yes i know, that's why i chose a bigger wattage :)
 

Windfall

I'm a huge fan of SFF
Moderator
Nov 14, 2017
2,109
1,570
Hello,
this is my project 5.2L mini 250W brickless PC for my girlfriend.

Specification:

MOBO: H310M-ITX/ac
CPU: Intel® Pentium® Gold G5400 Processor
CPU Cooler: IS-40X from ID-COOLING
GPU: GeForce® GTX 1050 OC Low Profile 2G
RAM: 8GB DDR4 KIT (2X 4GB) 2400MHz DIMM from Kllisre (Aliexpress)
SSD: Crucial MX300 M.2 2280 275GB SATA III
PSU: 250W - 12V/ 20.8A LED Power Supply from SANPU (Aliexpress) + 12V 250W Pico PSU from RGeek (Aliexpress)
CASE: HTPC MINI ITX Case 21*26*9.5cm 5.2L from Aliexpress

Case need some mods for fit LED PSU ( cut out front panel HDD led ) and IEC C14 Power Plug (drill hole for connector)

Links for Aliexpress parts:
RAM:
https://www.aliexpress.com/item/Kll...868.html?spm=a2g0s.9042311.0.0.27424c4dwBUKzY
12V 250W LED PSU:
https://www.aliexpress.com/item/IWH...822.html?spm=a2g0s.9042311.0.0.3a874c4dpipTc0
12V 250W Pico PSU:
https://www.aliexpress.com/item/24p...978.html?spm=a2g0s.9042311.0.0.3ef84c4dKmdEQq
IEC C14 EMI filter :
https://www.aliexpress.com/item/pan...867.html?spm=a2g0s.9042311.0.0.13764c4dKfJhbm
CASE:
https://www.aliexpress.com/item/Bes...423.html?spm=a2g0s.9042311.0.0.44084c4dKNRhtu

PS: sorry for my bad english, I am from Slovakia :D

PHOTOS:

Nice build! Can that case support MATX?
 

Thehack

Spatial Philosopher
Creator
Bronze Supporter
Mar 6, 2016
2,737
3,499
J-hackcompany.com
yes i know, that's why i chose a bigger wattage :)

The higher wattage does not mean anything, as they fudge the numbers. They add the 5v rail and the 3.3V rail to the rating. PC use mostly 12V rail. This is probably a 120W unit, which is pretty much just enough for this build.

I think you're on a tight budget and you understand the risks. It looks very good. I am concern for the ac-dc. The ripple on LED psu is generally very poor.
 

LuKO

Efficiency Noob
Original poster
Feb 16, 2019
7
7
Nice build! Can that case support MATX?
yes this case also supports MATX mobo.
but beware!!! only to size 20x24cm (this means that not all MATX)
you have to check at the dimensions your mobo
 

Choidebu

"Banned"
Aug 16, 2017
1,177
1,166
Hunted down that psu's spec sheet, found that the mfg at least do state ripple of <120mVpp, and <250mVpp for the 24V counterpart.

The efficiency is pretty bad at 85% though.

But yeah... do take precaution and don't tax it too much. Great build anyway! Hope your gf likes it!
 
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Valantar

Shrink Way Wielder
Jan 20, 2018
1,816
1,739
Hunted down that psu's spec sheet, found that the mfg at least do state ripple of <120mVpp, and <250mVpp for the 24V counterpart.

The efficiency is pretty bad at 85% though.

But yeah... do take precaution and don't tax it too much. Great build anyway! Hope your gf likes it!
Your Google-fu is apparently superior to mine. I even messaged the AliExpress seller, which ... well, wasn't helpful :p