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Title: 240 vs 120vac psu for setting up antfarm Post by: black3000gt on March 16, 2014, 02:50:18 PM I am in the process of setting up a space for 6 more antminer s1'S. I curious if i would see any benefit running psus at 240 vs 120. My amp draw will be the same if i use 1 240v circuit or 2 120v circuit. Is there much difference in power consumption if the power supply doest have to double the input voltage?
Title: Re: 240 vs 120vac psu for setting up antfarm Post by: mitak64 on March 16, 2014, 03:19:25 PM The PSUs will be a bit more efficient on 240v, which will result in lower power draw at the wall.
Title: Re: 240 vs 120vac psu for setting up antfarm Post by: helipotte on March 16, 2014, 10:41:49 PM Got all of my stuff on a refitted 240V circuit. 30A breaker outside. I think it was an old dryer circuit. Have 8 750W power supplies running at about 60-70%
load each. Used an inductance meter to measure before/after 120V to 240V switch, same load. Netted about 120W reduction in usage and power cords that are cold to the touch. Anything warm on AC voltage side makes me nervous. Small benefit but worth the effort I think. :) Title: Re: 240 vs 120vac psu for setting up antfarm Post by: black3000gt on March 16, 2014, 11:28:06 PM How many outlets?
Title: Re: 240 vs 120vac psu for setting up antfarm Post by: smooth on March 16, 2014, 11:49:52 PM Your amp draw is not the same. At 240 V you draw half as many amps, all else being equal. Or to put it another way on two circuits with the same amps, the one at 240 V can power twice as many miners.
You will also gain a bit (generally 2-3%) on PSU efficiency with 240 V. Title: Re: 240 vs 120vac psu for setting up antfarm Post by: helipotte on March 17, 2014, 12:15:31 AM How many outlets? 5. Half amperage allows me to double up on some outlets. Title: Re: 240 vs 120vac psu for setting up antfarm Post by: black3000gt on March 17, 2014, 02:13:56 AM Your amp draw is not the same. At 240 V you draw half as many amps, all else being equal. Or to put it another way on two circuits with the same amps, the one at 240 V can power twice as many miners. You will also gain a bit (generally 2-3%) on PSU efficiency with 240 V. I meant given my situation. Currrently i have 6 miners on 2 120v circuits so putting all 6 on one 240v circuit i am still drawing the same amount of amps in total. Title: Re: 240 vs 120vac psu for setting up antfarm Post by: smooth on March 17, 2014, 02:41:42 AM Your amp draw is not the same. At 240 V you draw half as many amps, all else being equal. Or to put it another way on two circuits with the same amps, the one at 240 V can power twice as many miners. You will also gain a bit (generally 2-3%) on PSU efficiency with 240 V. I meant given my situation. Currrently i have 6 miners on 2 120v circuits so putting all 6 on one 240v circuit i am still drawing the same amount of amps in total. True. Just a bit less from the increased PSU efficiency. |