Bitcoin Forum
November 20, 2017, 09:22:59 AM *
News: Latest stable version of Bitcoin Core: 0.15.1  [Torrent].
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: Power Supply and efficiency  (Read 307 times)
NCDiesel
Jr. Member
*
Offline Offline

Activity: 36


View Profile
November 10, 2017, 03:55:51 PM
 #1

In various posts, articles, etc I am led to believe(but can't find anything definitive)  that plugging your power supplies into 208/240 circuit results in a more efficient power supply and better hash rate(albeit marginal as best I can infer).   The efficiency I can believe, but I am not sold on better hash rate.

Is this true?   Should I invest in the 240V surge protector and cable(s)?  Just curious...

Setup:  I have two EVGA Super Nova G2 gold PSUs running an Avalon miner - both support 240 - and I have a 240 outlet right beside it. 

-------------------------------------
Avalon 741
1511169779
Hero Member
*
Offline Offline

Posts: 1511169779

View Profile Personal Message (Offline)

Ignore
1511169779
Reply with quote  #2

1511169779
Report to moderator
Join ICO Now A blockchain platform for effective freelancing
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1511169779
Hero Member
*
Offline Offline

Posts: 1511169779

View Profile Personal Message (Offline)

Ignore
1511169779
Reply with quote  #2

1511169779
Report to moderator
NotFuzzyWarm
Legendary
*
Offline Offline

Activity: 1260


Evil beware: We have waffles!


View Profile
November 10, 2017, 04:01:25 PM
 #2

Hash rate does not and cannot change when using 220v vs 110v. Assuming the PSU works correctly, it still only puts out 12vdc and that is all the miner sees. Same DC voltage = same DC current = same operation of miner. Assuming the PSU works with either 110v or 220v and feeding in 220v the wall plug eff is slightly higher but not enough to matter - at best only 0.5% difference.

-Joshua Zipkin aka Joshua Alexander leaked AMT A1 miner skype chats http://bit.ly/1Qjt6lj
-For bitcoin to succeed the community must police itself.
-Support Sidehacks miner development. Donations to:   1BURGERAXHH6Yi6LRybRJK7ybEm5m5HwTr
NCDiesel
Jr. Member
*
Offline Offline

Activity: 36


View Profile
November 10, 2017, 04:23:52 PM
 #3

Hash rate does not and cannot change when using 220v vs 110v. Assuming the PSU works correctly, it still only puts out 12vdc and that is all the miner sees. Same DC voltage = same DC current = same operation of miner. Assuming the PSU works with either 110v or 220v and feeding in 220v the wall plug eff is slightly higher but not enough to matter - at best only 0.5% difference.

Thanks - that's what I figured.   But I am no electronics guru/electrician so I thought I would ask.

-------------------------------------
Avalon 741
westom
Jr. Member
*
Offline Offline

Activity: 48


View Profile
November 11, 2017, 01:05:00 PM
 #4

Is this true?   Should I invest in the 240V surge protector and cable(s)?  Just curious...
Any recommendation that also does not say why with numbers is often a myth or scam.

If using a 240 volt power source, then all cables must already be rated for that voltage.

What does a protector do?  Protector can make damage easier if located adjacent to a miner.  Protectors that are effective never do protection.  Those proven devices only connect a surge to something completely different that does protection - single point earth ground.  Protection is where hundreds of thousands of joules are harmlessly absorbed.

Best protector for all 120 and 240 volt appliances is located at a service entrance with a low impedance (ie less than 10 foot) connection to earth.  If even one miner needs that protection, then everything in a house needs that protection.  With numbers that even define protection from direct lightning strikes.  A protector is only as effective as its earth ground (which obviously is not a wall receptacle safety ground).  And typically costs about $1 per protected appliance.

EtihadBitcoin
Jr. Member
*
Offline Offline

Activity: 42

Highest ROI crypto infrastructure


View Profile
November 11, 2017, 02:52:50 PM
 #5

Here is a good article to look at when deciding what power supply and power outlet to use.

https://www.anandtech.com/show/2624/debunking-power-supply-myths

I found it a quite informative read and you just might too.
Hope this help you in your question you posed here.

Dibblah
Jr. Member
*
Offline Offline

Activity: 48


View Profile
November 12, 2017, 08:12:42 PM
 #6

240 / 220 is almost always slightly more efficient, since you're drawing less current (which means less resistive losses in the wiring). Although this effect is minuscule. It's also far easier and cheaper to get PSUs that deliver the load with 240.

It is technically possible that your PSU can change your mining rate - if you're overclocking and have one of the really old S7s. Apart from that, unless the PSU gets wobbly (way less than 12v output), there's no difference to hash rates.
Alexbit2017
Newbie
*
Offline Offline

Activity: 17


View Profile
November 13, 2017, 07:18:31 AM
 #7

It's hard to understand when you do not understand, thanks, I will continue to delve into
Pages: [1]
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!