I don't know if this is too lame or not but I've found these ;)
Asus Power Supply Guide and PowerSupplyCalculator.net
Between the two I've got roughly 20% difference (which is huge!) the ASUS calculating 400W usage vs 345W on the other for a dual CPU system with E5-2670 and 7 HDDs and 4 DiMM slot used. It looks a bit on the low side but it's OK for a rough estimate...
Please go back to the first post in this thread. Read the first sentence of this first post. Imagine that I am saying that directly to you. Because I am.
I know, I know - I've read it yesterday
And I would not dream of running the thing from a £10 PSU anyways. I don't want to be a statistic ;)
Well, fine, then. All I want is for people to make informed, educated choices...
As we discussed this in a parallel galaxy (thread) I just felt my nice and shiny 920W redundant platinum rated PSU is a bit over the top. According to the manual I can also set up the mobo so the HDDs won't try to spin up at the same time so I can reduce the stress on the PSU.
PS. I also made some edit on the aforementioned post ;)
Depends on the fan. What fans are you looking at?Is this right?
Depends on the fan. What fans are you looking at?
Seems reasonable.FUHE MOTORS DC1202512H
found this spec sheet: http://www.impedanca.si/media/KLD024PP120CSWH.pdf
4.56W max
Delta and Noctua are generally trutworthy, so their specs should be fine, too.Delta 80mm AFB0812H
0.24A on the fan label = 2.88W
and two Noctua 90mm NF B9 PWM, fan and specsheet says 0.96W
Desktop cooling fans and server cooling fans are a bit different. Server fans need to be able to force a lot of air through a densely-packed chassis, and they tend to consume a lot more power. See this datasheet for reference:Currently using the default case fans, and a pair of Noctuas CPU fans
3x 120mm case fans :
FUHE MOTORS DC1202512H
found this spec sheet: http://www.impedanca.si/media/KLD024PP120CSWH.pdf
4.56W max
2x 80mm case fans:
Delta 80mm AFB0812H
0.24A on the fan label = 2.88W
and two Noctua 90mm NF B9 PWM, fan and specsheet says 0.96W
And I think I will add a fan over the PCIe cards for HBA/NIC/SSD cooling, etc
Desktop cooling fans and server cooling fans are a bit different. Server fans need to be able to force a lot of air through a densely-packed chassis, and they tend to consume a lot more power. See this datasheet for reference:
http://www.supermicro.com/support/resources/Thermal/
Summing the 8 fans in my planned system I come to 25W total. Using the guidance, 8 fans at 30W each, that'd be 240W, which is more than the drives are supposed to use!
Thanks :)
Still, an estimate of 15-30W per fan, when some 'rigs' may have 10-20 low wattage fans, could result in some serious over-sizing of PSUs
Its unfortunately, more like 1-36W :)
and ~15-30 watts per fan.
Honestly it can be a fair amount of work to come up with a good number, take some time and look at data sheets.
I think they have a 10k RPM version of that, rated at 130ish Watt.The Sanyo Denki 9CR1212P0G03 is a 120mm fan rated at 87 watts.
I think they have a 10k RPM version of that, rated at 130ish Watt.