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Title: Alternative PSU for BFL Single Post by: Pyr3x on October 27, 2013, 05:26:14 AM I recently swapped the PSU on my BFL Single 60 GH/s unit. Before I swapped it it would hash at around 57 GH/s, after I replaced it with a 1000w Corsair PSU (all I had) it began running a tad over 60.
Now that is not an issue however, I started to wonder since I replaced it with a 1000w PSU does that dictate the actual power draw out of the wall or is that simply what I assumed it was "the max power output"? Any feedback would be appreciated. Thank You Title: Re: Alternative PSU for BFL Single Post by: MWNinja on October 27, 2013, 05:32:48 AM It's not going to draw 1000 watts at the wall unless you load it up with 3 singles. It's wall power draw depends totally on what is hooked up to it.
Title: Re: Alternative PSU for BFL Single Post by: Unacceptable on October 27, 2013, 06:44:02 AM It's not going to draw 1000 watts at the wall unless you load it up with 3 singles. It's wall power draw depends totally on what is hooked up to it. Exactly ;) Also,that PSU is not going give a decent effiency until its drawing about 80% of max,which would be 800 watts.Until then the effiency is going be poor :( Title: Re: Alternative PSU for BFL Single Post by: Pyr3x on October 27, 2013, 07:04:22 AM It's not going to draw 1000 watts at the wall unless you load it up with 3 singles. It's wall power draw depends totally on what is hooked up to it. Exactly ;) Also,that PSU is not going give a decent efficiency until its drawing about 80% of max,which would be 800 watts.Until then the efficiency is going be poor :( Would you be so kind as to elaborate further? I am assuming you are referring to overall cost of operation? Title: Re: Alternative PSU for BFL Single Post by: Prelude on October 29, 2013, 05:11:09 PM It's not going to draw 1000 watts at the wall unless you load it up with 3 singles. It's wall power draw depends totally on what is hooked up to it. Exactly ;) Also,that PSU is not going give a decent efficiency until its drawing about 80% of max,which would be 800 watts.Until then the efficiency is going be poor :( Would you be so kind as to elaborate further? I am assuming you are referring to overall cost of operation? He's talking about PSU AC to DC conversion efficiency. Most power supplies are most efficient at 50% power load. (not 80%) http://blog.corsair.com/wp-content/uploads/2010/10/AX1200-Efficiency-Curve.png Title: Re: Alternative PSU for BFL Single Post by: HellDiverUK on October 29, 2013, 06:32:11 PM It's not going to draw 1000 watts at the wall unless you load it up with 3 singles. It's wall power draw depends totally on what is hooked up to it. Exactly ;) Also,that PSU is not going give a decent effiency until its drawing about 80% of max,which would be 800 watts.Until then the effiency is going be poor :( It's going to be at most 2% less efficient. Hardly a deal breaker. Title: Re: Alternative PSU for BFL Single Post by: rograz on October 29, 2013, 11:37:28 PM It's not going to draw 1000 watts at the wall unless you load it up with 3 singles. 4 singles here on a FSP 1000w 80+ gold, 965W at the wall. Title: Re: Alternative PSU for BFL Single Post by: BitcoinHeroes on October 30, 2013, 01:32:27 AM Get a platinum power supply, you would save more energy in the long run....
Title: Re: Alternative PSU for BFL Single Post by: lightfoot on October 30, 2013, 01:38:57 AM These power supplies also have really poor power factor correction, which is why they run hot. Fortunately we pay for watts and not volt-amps, but still it's pathetic.
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