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Mini-Box picoPSU-80 80 watt PSU $20 w/FSSS @ Amazon

jkilez 728 January 6, 2013 at 01:41 PM in Computers (3) More Amazon Deals
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Mini-Box picoPSU-80 80 watt power supply for $20 shipped at Amazon: http://www.amazon.com/gp/product/B005TWE5E6

Normally $25 + Shipping at mini-box.com. Requires an external AC adapter.

This is best power supply for low power mini-ITX rigs. Extremely energy efficient with no fans to add noise. It only has a couple of power connectors so it really is just for an HTPC, firewall, or small NAS set-up.

Specs:
- Power connectors: One 4-pin molex, one SATA, one 20 pin ATX power
- Low heat dissipation
- High efficiency at light loads (Intel Atom)
- 96% efficiency
- 80 watts, 12V input
- Configurable wire harness
- P4 Mini cable can be used for onboard P4 connection
- OSCON / POSCAP capacitors, Japan

The AC adapter needed is similar in specs to most LCD power supplies. If you are lucky you have an old one already from an ancient monitor. If not, you can get this 12V 6A unit [amazon.com] for only $8.25 w/FSSS. Combine the two and you have a 80+ Titanium power supply for less than $30 shipped!

44 Comments

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Joined May 2011
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#31
I have the 120W version of this for my Asus e35m1-i Deluxe build. (AMD E350 chip).

I never tested it while gaming, but with just the CPU at full load I only saw about 32 watts of usage at the max. I'm sure it would have been higher with the GPU loaded but nothing that this 80 watt PSU couldn't handle.
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#32
Quote from windwalker View Post :
should/will this work with a ASRock E350M1 AMD E-350

Thanks
Yes, I am powering up my E350M1 usb3.0 motherboard off this picoPSU no problem, 4GB ram and a Seagate 250GB laptop drive.

When idling it consumes 16W of power!
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#33
Quote from waveofdestiny View Post :
Are you sure it was the motherboard and not a more energy-hungry CPU? Did you have a graphics card also or was this just APU (cpu/gpu)? If the board is having to deal with 64 watts or so being pulled (I think) it needs the P4 connector.

Your Foxconn motherboard, it doesn't have a P4 connector on it? Are you sure?

I just looked up @ foxconn's website and the only mini itx boards without P4 I saw were the 45CSX and 45CS (embedded ATOM chips).

Anyways if for whatever reason your foxconn board is just a stickler and *has* to have the pins filled then they do make a 20 to 24 pin adapter. It won't provide any extra power but if that is a weird bird of a motherboard then it may work for you.

It's this motherboard/case combo, running a G550 CPU, integrated video. No P4 socket, won't run off a picoPSU 80.

http://www.newegg.com/Product/Pro...6856119066

Using the stock power supply in the combo, the minimum power draw per my Killawatt was 26W. Max was about 50W (from memory).
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#34
Quote from Probedude View Post :
It's this motherboard/case combo, running a G550 CPU, integrated video. No P4 socket, won't run off a picoPSU 80.

http://www.newegg.com/Product/Product.aspx?Item=N82E16856119066

Using the stock power supply in the combo, the minimum power draw per my Killawatt was 26W. Max was about 50W (from memory).
You have linked to the Foxconn RM3-H2. The P4 socket on your motherboard is labeled "PWR2" and is found near the corner of the motherboard where the round PS/2 keyboard connector plugs in on the backplate.
Click image for larger version

Name:	RM3-H2--P4-connector.png
Views:	108
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ID:	1712608
It looks like you'll need a cable like one of the P4 cables from Mini-Box I linked to earlier in this thread.
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#35
Does Mini-Box read SD?

At first, I thought the 4-Pin P4 Mini Power Cable for PicoPSU-80 had Free Shipping. Then I added the cable alone to the cart, and saw ~$10 shipping.

Just tried it again:
$1.25 CAB-P4-POWER-MINI Link [mini-box.com]
$1.64 Estimated Shipping (USPS First-Class Mail)
----------
$2.89 Total <--- Very reasonable. Smilie

Edit: Unfortunately, the picoPSU is now $33.95

Oh, well.

ScratchchinThe picoPSU-80 plus the P4 cable is only $27.89 shipped, direct from mini-box.

picoPSU-80 Link [mini-box.com]
P4 cable for picoPSU-80 Link [mini-box.com]
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#36
Quote from K6-2 View Post :
You have linked to the Foxconn RM3-H2. The P4 socket on your motherboard is labeled "PWR2" and is found near the corner of the motherboard where the round PS/2 keyboard connector plugs in on the backplate.
Attachment 1712608
It looks like you'll need a cable like one of the P4 cables from Mini-Box I linked to earlier in this thread.

Doh! Completely missed that.
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#37
Quote from Probedude View Post :
Doh! Completely missed that.
Leave the old PSU in the case? Smilie
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Joined Nov 2012
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#38
Quote from jkilez View Post :
I do not know the specs of the linked AC adapter, but you are correct about the efficiency math. SilentPCreview.com measured the efficiency of the PicoPSU with a couple of different power bricks and contrasted that with some 80+ PSUs. Here is an excerpt from that review of the PicoPSU-120 [silentpcreview.com]:

Efficiency Comparison: picoPSU vs. Past Efficiency Champs
Target Output Power 40W 65W 90W Peak EfficiencyLoad @ Peak
picoPSU + 120W power brick85.6%87.1%87.1%87.1%65~90W
I finally got one of the 6A AC adapters from Amazon and was able to do some basic testing. While I could not do any true independent efficiency tests, I was able to compare its efficiency with that of the Edac EA11203A 12V 8.5A supply that SilentPCreview called "120W power brick" in their review.

The good news is that appears to be quite efficient. It was a good 2-2.5% better (~93% vs ~91%) than the Edac at 30-50W and even better at lower power. It has effectively a 0W no-load rating which really helped the numbers at the low end (the Edac was about 2W).

The bad news is that the adapter causes the PicoPSU to whine or buzz. I do not know if this is because of overvoltage on the 12V, too much ripple, or something else. Regardless of the cause, it is annoying enough that I would not recommend the adapter for this purpose. The adapter itself works fine and is quiet; it is the PicoPSU that makes the noise, even though everything seems to work correctly otherwise.
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#39
I just got my picoPSU from this deal along wit the 6A AC adapter from Amazon that someone suggested, and had a chance to do some basic comparison on a new HTPC build I'm putting together.

I was using a 400W Antec Neo 80+ ATX power supply, and the build was idling at 23W, not too bad. With the picoPSU, it's now idling at 18W - a full 5W reduction is pretty good! I didn't notice any whine or buzz from the picoPSU with this power supply. The 6A adapter is only good to 72W (12VDC), which is less than the picoPSU 80W capacity, but I don't think this build will draw more than 35W at full load.

I'm going for a low-power build as I plan to have it running 24x7 for light media server duties. My build is basically:
MSI Z77MA-G45 micro-ATX mobo
i3-2100 CPU with integrated graphics
Seagate 500 MB Momentus 2.5" hybrid HDD
Window 7 (have not installed any apps yet)

I may use this mobo for another PC, and instead put in a ECS H61 MATX board, that one seems to consume about 2 watts less than the MSI board, so potentially could get me down to 16W.
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#40
Quote from wwu123 View Post :
I didn't notice any whine or buzz from the picoPSU with this power supply.
That is good to hear (no pun intended). Hopefully my experience was a fluke. The small size of that adapter combined with its high efficiency at low-power make it a great deal, and a good match for HTPC builds.
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#41
Quote from jkilez View Post :
That is good to hear (no pun intended). Hopefully my experience was a fluke. The small size of that adapter combined with its high efficiency at low-power make it a great deal, and a good match for HTPC builds.
Yeah, I'm no stranger to experiencing odd whining or buzzing in electronics, nor resonances or vibrations in electric items. Luck of the draw whether it happens or not. Hope you find a combination that works (could lie in part with your particular picopsu, as opposed to the adapter).

With the H61 motherboard installed, Windows 8, and a regular 2.5" HDD, I can get down to 16.5 watts on idle. Oddly, using a different pair of DDR3 RAM increases idle by a full 2 watts - didn't think RAM sticks would vary so much in consumption.
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#42
Quote from K6-2 View Post :
Leave the old PSU in the case? Smilie
Yeah, wanted to see if the PicoPSU 80 would work so I only unplugged the large connector. Embarrassment
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#43
Quote from Probedude View Post :
Yeah, wanted to see if the PicoPSU 80 would work so I only unplugged the large connector. Embarrassment
Yeah, I figured that was it.Smilie

With a safety disclaimer, a fan replacement on the existing power supply might be an option as well. I haven't looked into it for this model.
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#44
Quote from jkilez View Post :
That is good to hear (no pun intended). Hopefully my experience was a fluke. The small size of that adapter combined with its high efficiency at low-power make it a great deal, and a good match for HTPC builds.
I got the same picoPSU and power supply, and don't hear any whine or buzz, either. It's dead silent. The P4 cable from Mini-Box is too short for my microATX MB. Fortunately, I have a 4-pin extension cable laying around from a Zotac ITX MB.

Does anyone know of a good low profile back plate for fixing the other end of the connector to the case?
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Joined Nov 2012
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Original Poster
#45
Quote from jkilez View Post :
The bad news is that the adapter causes the PicoPSU to whine or buzz. I do not know if this is because of overvoltage on the 12V, too much ripple, or something else. Regardless of the cause, it is annoying enough that I would not recommend the adapter for this purpose. The adapter itself works fine and is quiet; it is the PicoPSU that makes the noise, even though everything seems to work correctly otherwise.
A quick update on this. I contacted Amazon about the problem with my AC adapter. Since it was fulfilled by them, they replaced it for free--even return shipping. The replacement adapter works great, with no noise or other issues.

I would like to recognize the great customer service at Amazon. They made the process easy and hassle-free.
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