Best PSU to power this setup

jammir

jammir

jammir

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but efficient and low power as possible

E4400
Asus workstation board
1gb ddr3
pci vga card
4x 120mm fans
Adaptec 3805 pcie x8
Adaptec 21610sa pcix
2x 100gb 2.5"
12x 1tb seagate
4x 1tb Hitatchi
5x 1.5tb seagate

atm its running on a 1kw but really want to reduce this also im sure i can use lower power cpu which 775 cpu has the lowest power usage at full load
 
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firstly your psu will only provide what power is needed, so if your pc needs 250W, then your psu will only provide 250W. power draw from the wall will be power used + power lossed due to ineffeciency (no psu will be 100% effecient) getting a lower rated PSU will have little effect on your electricity usage unless the effeciency between your current and new psu is drastically different
 
jak731 said:
firstly your psu will only provide what power is needed, so if your pc needs 250W, then your psu will only provide 250W. power draw from the wall will be power used + power lossed due to ineffeciency (no psu will be 100% effecient) getting a lower rated PSU will have little effect on your electricity usage unless the effeciency between your current and new psu is drastically different
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the one i got now is a Zalman 1000w what will be a all round good unit to take care of this setup as i got the 1kw for my new i7 gaming rig but am still waiting for a few bit so stuck it in my fileserver for the mean time
 
Dear god, 24tb?

Watch you dont ger raided!

As the guy above said it will only draw the power that it needs, if the psu is massively over rated then it will be less effeicent because it is not in its peak power band. But with all those drives you might be one of the very few who need such a big psu - so there is nothing to "reduce", dont think for a second its sucking down 1kw of power and if it was to reduce it you need less hardware not a lesser psu
 
Absolutely highpest power draw is during boot because spin up of HDDs can draw 30W spike per drive. After that draw is 9-10W per drive. (so highest power draw after boot is over is around 300W)
Because of this great imbalance all serious servers use staggered spinup for avoiding need of bigger (also more expensive) PSU.
 
Kennysevenfold said:
but something like this you cant really go wrong mate...
http://www.overclockers.co.uk/showproduct.php?prodid=CA-150-CM&groupid=701&catid=123&subcat=
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And that's exactly where it could go wrong: Unless staggered spinup is used those drives draw really serious surge from 12V surely capable to breaking havoc with artificial current limiters aka multiple rails in BS bingo slang if drives aren't spread well enough to different fuses.
PSU without that limitation would be much more surely able to crank up that pile of drives without being heavily oversized from power on power draw.


But now we would need to know is staggered spinup used for being able to know should be there be much reserve for spinup surge.
 
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