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Lennart

Installing PicoPSU in Microserver Gen8 (including power usage)

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Lennart

In my quest for a green world I wanted to lower the power consumption of my microserver Gen8 a bit. So, I gave it a try and bought a PicoPSU from minibox.

 

My current setup:

- G1610T

- 12GB ram (4GB original / 8GB kingston)

- 1 TB drive (original HP drive that came with the microserver)

- HP ODD (original HP drive)

- B120i is used for SATA.

- Balanced power profile

 

I always measure the power consumption with a "plugwise" system. I don't know if it's available over the sea but it generates a mesh network of power plugs which give the numbers on your PC. It's capable of measuring low watts (tv standby for example) and it seems to be accurate.

 

That said, original power supply

- System off: 5 watts

- System on / boot / bios etc: lot of variation with a maximum of 50 watts

- System idle (2012R2): 33 watts (disk spinning)

 

New components:

- Mini box picoPSU-160-XT

- Seasonic 80watts 12v Level V power adapter. (over 87% efficiency)

 

The default power supply only has 3 connectors:

- 24pin ATX

- Berg connector (the old powerconnector for the floppy drive) :)

- Molex 4pins

 

picoPSU only has the ATX and Molex so you need a split cable for the berg.
 

Step (the removal of the PSU can also be found in the service manual of the microserver)

 

Disconnect the power cable from the mainboard

P1

 

Disconnect the odd power supply and the molex 4 pins under the odd bay.

P2

 
Remove the power supply by removing 3 screws on the back and 1 at the front.

P3

 
Grab your new picoPSU

P4

 
While searching in my box with cables I found an old cable with a berg connector and a molex. Great for this project. I think I own this cable for more than 10 years now ;-)

P6

 
Attach the picoPSU, notice the berg and molex connector are already attached.

P7

 
Replace the ODD

P8

 

Connect adapter ;-)

P5

 

 

That's it. It took about 30 minutes. Perhaps I place the old PSU back (non operational) because of the silly hole in the back. The 12v connector will be drilled out in the PCI plate when I have time to do it.

 

Now the new power consumption measures:

 

- System off: 5 watts (no diff)

- System on / boot / bios etc: lot of variation with a maximum of 45 watts = minus: 10%

- System idle (2012R2): 27 watts. (disk spinning) = minus 18%

 

By the way, changing the power profile from Balanced to low power consumption didn't change the idle values but did cap the maximum a bit.

 

Edited by Lennart
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schoondoggy

Thank you!

I have heard a lot about the Pico, but this is the first time I have seen a detailed account of deploying one.

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Dave

Great write up Lennart. Now, what can we do with all that extra room?  ;)

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Lennart

Haha the height of the PSU is more than a 2.5" drive. 4 x 2.5" drives is possible :-)

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Lennart

The result, no power fan sound.

 

Adapterplug in the backplate:

gallery_7848_73_44262.jpg

 

Overview:

gallery_7848_73_658306.jpg

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Ray

This is really informative. Would like to try this as well. Thanks OP.

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spacecake

Did anybody got  after this idea with a more robust unit, like for not so green 150W version? 

The extra space for 2.5 is intriguing ..

 

 

Sorry to revive such an old tread !!

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ari2asem

if it is possible to extend the number of hdd-drives (or ssd-drives) by putting yet 4 more 2,5" drives aloingside with another 4x 2.5"  within smd rev4  bracket....this way adding 8x   2.5" drives.....plus 4x   3,5" drives in the front.

 

to be more clear.....3 sets of 4 drives...in totaal 12 drives for only storage -:).....plus bootable os-driver on 5th sata-port (odd-port)

 

but the question is: is 160watt power supply enough for this setup? or how much supply do we need for above  setup?

Edited by ari2asem

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