Reddit mentions of Supermicro PWS-1K41P-1R, 1400W 1U Gold Level Pws with Pm Bus & WX3

---power supply:
I just ordered one of these 1100/1400 watt (depends if you give it 120v or 240v) Supermicro PWS-1K41P-1R power supplies for $25, hoping I will be able to turn it on when it gets here! What I currently have, and am super happy with, is a 460 watt HP DPS-460EB. Second one down on this page is where I found out how to power it up. These server power supplies have one giant 12v output (there may be -12v or other voltages but at tiny amounts), perfect for car amps.

I had to solder a wire between the first and fourth pads - as shown in the photos and schematic above - so that it would turn on when plugged in. I might put a switch in there, so I left the wire long. Also soldered some 10 guage power wires to it. That's plenty for 500 watts over a few feet or less, according to a voltage drop calculator. It's nearly silent at low power, pulls six watts when idle, and gracefully handles overloads: I didn't try waiting to see if it would come back up on it's own, but when I overloaded mine with a battery tester it simply turned off. I let it cool and it came back up like normal afterward. Super happy with it; I've powered a kenwood amp wired up to make 350 watts, which worked great, and I'm currently running a smaller infinity with better controls as it's plenty for my room. The only hard part is soldering to the big bare copper pads, I think you need a high power soldering iron. Also some of them have loud fans, apparently. This video is where I got started, and including mention of a current-sharing pin which I sadly don't think most of them have, but would let you run multiple PSUs in parallel.

There are lots of people doing this sort of thing to run high power RC battery chargers, as well as amps, fwiw.


---Amp:
The Rockville RXM-T2 apparently does 1200 real RMS watts bridged at 4 ohms. Dynomometer tested here. I spent some time looking through cheap amps that have test resuts, and nothing else I could find is even close at 4ohm, for under $150. The crossover in it may be BS, or low-order, according to reviews, and it doesn't actually handle 2 ohm bridged like its supposed to, which doesn't inspire confidence.

> Except OP has an 847, not an 846, which I believe prohibits the ATX power supply mod. It may even prevent a Norco fan wall (which is pictured in your post, above).
OP -- do you have your fan setting in BIOS to "optimal" or "energy saving?" If not, try that first. Second, you can replace the PSUs with Supermicro's "SQ" models, the most of which are nearly silent.

You are correct! I do have the 847E16-R1400LPB chasis which is the 36 bay one.

BIOS the settings are: Current FAN Mode is Optimal.

For reference, details on what im running:

• Freenas Server with a Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz
  
  
• Memory: 65476MB
  
  
• 18 WD Red 3TBs
  
  
• Power Supply: 2x PWS-1K41P-1R [1400W 1U GOLD LEVEL PWS W/ PM BUS & WX3]
  
  
• Input Voltage: 220V-240V @ 50 Hz
  
  
• Fans: 7x FAN-0126L4 - 80x80x38 mm 7000 RPM Chassis Middle Fan w/ Housing [Noise (dBA): 53.5]
  
  
  
  IPMI Readings:
  
  
  Temperature Sensors:
  
  |Name|Status|Reading
  ---|---|----
  CPU1 Temp|Normal |32 degrees C
  CPU2 Temp|Normal|41 degrees C
  System Temp|Normal|29 degrees C
  Peripheral Temp|Normal|33 degrees C
  PCH Temp|Normal|43 degrees C
  
  Fan Sensors:
  
  Name|Status|Reading
  ---|---|----
  FAN1|Normal|4275 R.P.M
  FAN2|Normal|3750 R.P.M
  FAN3|Normal|3900 R.P.M
  FAN4|Normal|4125 R.P.M
  
  Power consumption:
  
  Peak name|Value
  ---|---|----
  The Highest Peak (W)|470
  The Lowest Peak (W)|12
  
  Im thinking maybe these PSU's will help with the noise along with a few fan recommendations?
  
  Full disclosure: I ordered this system prebuilt and im just starting to fiddle with it.