Bitcoin Forum
August 20, 2018, 10:57:01 PM *
News: Latest stable version of Bitcoin Core: 0.16.2  [Torrent].
 
   Home   Help Search Donate Login Register  
Pages: [1]
  Print  
Author Topic: Second PSU crapped out after just over a month  (Read 498 times)
dragonmike
Hero Member
*****
Offline Offline

Activity: 742
Merit: 520


🤖UBEX.COM 🤖


View Profile
June 24, 2017, 10:31:25 AM
 #1

Just thought I'd share.

Rigs config: 7x RX 570, 2x 750W PSU
Got 2 of these rigs.

First PSU crapped out right from the start. It was an old XFX I had, and it didn't withstand the load at all. Replaced with EVGA 750GQ (80+ Gold).
This rig is still going strong with 2x EVGA 750GQ's. Cards are undervolted, total draw is approx 1160W at the wall.

Second rig has one old XFX 750W (still going strong) and one EVGA 750GQ that was new a month ago. It crapped out last night. I could boot into Windows but impossible to get any mining load on it, it would just turn itself right off (taking 4 GPUs and the system down with it).

Fortunately I had a spare (same unit) that I put in now. Been chugging for half an hour, touch wood that it will hold for a while.

Total load on that unit is approx 620W, which is 83% of 750W. Being 80+ Gold, it should be at least 92% efficient at full load. I will admit it's cutting it close, but nevertheless it shouldn't crap out after just a month of use. The old unit will be RMA'd to EVGA.

Don't do like me. Don't assume "it will be fine". Bite the bullet, spend the extra 75 bucks per PSU and get more headroom. Crazy how much power delivery is important on mining rigs.


.GLOBAL DECENTRALIZED ADVERTISING EXCHANGE.

Token sale: MAY 21

                                   ▄█▄       ▄█▄         
                                  █████     █████         
                         ▄██▄      ▀█▀       ▀█▀         
                 ▄█▄     ▀██▀                             
          ▄      ▀█▀                         ▄█▄         
         ▀█▀                       ▄█▄      █████         
                         ▄██▄     █████      ▀█▀         
    ██           ▄█▄     ▀██▀      ▀█▀                   
          ▄      ▀█▀                         ▄█▄         
         ▀█▀                       ▄█▄      █████         
                         ▄██▄     █████      ▀█▀         
    ██           ▄█▄     ▀██▀      ▀█▀                   
                 ▀█▀                                     
           ▄                       ▄█▄       ▄█▄         
          ▀█▀            ▄██▄     █████     █████         
    ██           ▄█▄     ▀██▀      ▀█▀       ▀█▀         
                 ▀█▀                                     
            ▄                       ▄█▄      ▄█▄         
           ▀█▀             ▄██▄    █████    █████         
     ██             ▄█▄    ▀██▀     ▀█▀      ▀█▀         
              ▄     ▀█▀                                   
             ▀█▀                          ▄█▄             
        ██               ▄█▄    ▄██▄     █████           
                   ▄     ▀█▀    ▀██▀      ▀█▀             
                  ▀█▀                                     
             ██                    ▄██▄                   
                     ▄      ▄█▄    ▀██▀                   
                    ▀█▀     ▀█▀                           

▄█    ▄█  ▄█         ▄█████▄    ▀█▄      ▄█▀
██    ██  ██▄▄▄▄▄   ██▀   ▀██     ▀█▄  ▄█▀
██    ██  ██▀▀▀▀██  ██▀▀▀▀▀▀▀       ████   
██    ██  ██    ██  ██▄    ▄█     ▄██▀▀██▄   
▀██████▀  ▀██████▀  ▀███████▀   ▄██▀    ▀██▄
Telegram
Facebook
ANN Thread
Youtube
LinkedIn
Twitter
Medium
Reddit
Github
1534805821
Hero Member
*
Offline Offline

Posts: 1534805821

View Profile Personal Message (Offline)

Ignore
1534805821
Reply with quote  #2

1534805821
Report to moderator
BOUNTY PORTALS
BLOG
WHERE BOUNTY MANAGEMENT
MEETS AUTOMATION
SIGNATURE CAMPAIGNS
TWITTER
FACEBOOK
MEDIA CAMPAIGNS
AND MORE!
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1534805821
Hero Member
*
Offline Offline

Posts: 1534805821

View Profile Personal Message (Offline)

Ignore
1534805821
Reply with quote  #2

1534805821
Report to moderator
1534805821
Hero Member
*
Offline Offline

Posts: 1534805821

View Profile Personal Message (Offline)

Ignore
1534805821
Reply with quote  #2

1534805821
Report to moderator
sc8nt4u
Sr. Member
****
Offline Offline

Activity: 287
Merit: 250


View Profile
June 24, 2017, 10:46:15 AM
 #2

Yup, learned the first time I dived into GPU mining bitcoin. A Xion 1300W didn't last more than 3 months. I now run my 8x 580 on 2x EVGA T2 750W.
dragonmike
Hero Member
*****
Offline Offline

Activity: 742
Merit: 520


🤖UBEX.COM 🤖


View Profile
June 24, 2017, 11:09:48 AM
 #3

Out of interest, did you get a replacement unit through RMA? Thinkng I could just sell the new unit if they replace the old one... And buy something a bit sturdier for when the next PSU gives up...


.GLOBAL DECENTRALIZED ADVERTISING EXCHANGE.

Token sale: MAY 21

                                   ▄█▄       ▄█▄         
                                  █████     █████         
                         ▄██▄      ▀█▀       ▀█▀         
                 ▄█▄     ▀██▀                             
          ▄      ▀█▀                         ▄█▄         
         ▀█▀                       ▄█▄      █████         
                         ▄██▄     █████      ▀█▀         
    ██           ▄█▄     ▀██▀      ▀█▀                   
          ▄      ▀█▀                         ▄█▄         
         ▀█▀                       ▄█▄      █████         
                         ▄██▄     █████      ▀█▀         
    ██           ▄█▄     ▀██▀      ▀█▀                   
                 ▀█▀                                     
           ▄                       ▄█▄       ▄█▄         
          ▀█▀            ▄██▄     █████     █████         
    ██           ▄█▄     ▀██▀      ▀█▀       ▀█▀         
                 ▀█▀                                     
            ▄                       ▄█▄      ▄█▄         
           ▀█▀             ▄██▄    █████    █████         
     ██             ▄█▄    ▀██▀     ▀█▀      ▀█▀         
              ▄     ▀█▀                                   
             ▀█▀                          ▄█▄             
        ██               ▄█▄    ▄██▄     █████           
                   ▄     ▀█▀    ▀██▀      ▀█▀             
                  ▀█▀                                     
             ██                    ▄██▄                   
                     ▄      ▄█▄    ▀██▀                   
                    ▀█▀     ▀█▀                           

▄█    ▄█  ▄█         ▄█████▄    ▀█▄      ▄█▀
██    ██  ██▄▄▄▄▄   ██▀   ▀██     ▀█▄  ▄█▀
██    ██  ██▀▀▀▀██  ██▀▀▀▀▀▀▀       ████   
██    ██  ██    ██  ██▄    ▄█     ▄██▀▀██▄   
▀██████▀  ▀██████▀  ▀███████▀   ▄██▀    ▀██▄
Telegram
Facebook
ANN Thread
Youtube
LinkedIn
Twitter
Medium
Reddit
Github
sc8nt4u
Sr. Member
****
Offline Offline

Activity: 287
Merit: 250


View Profile
June 24, 2017, 11:16:08 AM
 #4

Out of interest, did you get a replacement unit through RMA? Thinkng I could just sell the new unit if they replace the old one... And buy something a bit sturdier for when the next PSU gives up...

Yup, got a new one through RMA. Sold the PSU once I got it back from RMA.
Nokia555
Sr. Member
****
Offline Offline

Activity: 392
Merit: 266

EthMonitoring.com


View Profile WWW
June 24, 2017, 12:33:03 PM
 #5

Always get a gold one for mining, those cheap PSU-s will die pretty quickly yeah. But why didn't you take one EVGA Gold 1300W? http://mylifegadgets.com/EVGAGOLD

64dimensions
Hero Member
*****
Offline Offline

Activity: 537
Merit: 501


View Profile
June 24, 2017, 01:25:03 PM
 #6

If you are in the US and running off of 120V receptacles, check your outlets with one of these: http://www.homedepot.com/p/Klein-Tools-GFCI-Receptacle-Tester-RT210/206517824.

Any chance that the room that your miners are in is carpeted? Would you generate any static electricity walking around in it?
mcturkey
Newbie
*
Offline Offline

Activity: 22
Merit: 0


View Profile
June 24, 2017, 02:14:38 PM
 #7

Don't use cheap PSUs, and don't use dual PSUs on one system if you can possibly help it.  Unless you're just making use of some high quality, lower wattage PSUs you had already, there is absolutely no reason to be using more than one PSU in a rig.  I have never seen a pair of PSUs that cost less than a comparable wattage single PSU of the same quality and efficiency.

If you still insist on using dual PSUs, keep them electrically isolated from each other - a GPU and riser combo should only receive power from a single PSU, never split.  Same for the motherboard.  Use only powered, USB-connected risers -- never the ribbon cable ones.  Failure to isolate can kill even the highest quality power supplies.

With a 7-GPU rig, you're making $35+ per day.  Saving $50 by using a cheaper PSU is pointless if you end up having to RMA it or wait for a replacement.
dragonmike
Hero Member
*****
Offline Offline

Activity: 742
Merit: 520


🤖UBEX.COM 🤖


View Profile
June 24, 2017, 06:27:47 PM
 #8

Don't use cheap PSUs, and don't use dual PSUs on one system if you can possibly help it.  Unless you're just making use of some high quality, lower wattage PSUs you had already, there is absolutely no reason to be using more than one PSU in a rig.  I have never seen a pair of PSUs that cost less than a comparable wattage single PSU of the same quality and efficiency.

If you still insist on using dual PSUs, keep them electrically isolated from each other - a GPU and riser combo should only receive power from a single PSU, never split.  Same for the motherboard.  Use only powered, USB-connected risers -- never the ribbon cable ones.  Failure to isolate can kill even the highest quality power supplies.

With a 7-GPU rig, you're making $35+ per day.  Saving $50 by using a cheaper PSU is pointless if you end up having to RMA it or wait for a replacement.
I agree on most of the above - it shall be noted that my 750W PSUs are all EVGA 80+ GOLD so not supposed to be crap. Also these cost £90 each and an equivalent 1350 or 1500 cost closer to £300. So yes, I went for the cheaper solution, but definitely not for a low quality one. Just arguably a little too weak.

Not on carpet, no. Wooden frame on wood planks in the attic. They are all plugged into the same high quality belkin socket extender however.


.GLOBAL DECENTRALIZED ADVERTISING EXCHANGE.

Token sale: MAY 21

                                   ▄█▄       ▄█▄         
                                  █████     █████         
                         ▄██▄      ▀█▀       ▀█▀         
                 ▄█▄     ▀██▀                             
          ▄      ▀█▀                         ▄█▄         
         ▀█▀                       ▄█▄      █████         
                         ▄██▄     █████      ▀█▀         
    ██           ▄█▄     ▀██▀      ▀█▀                   
          ▄      ▀█▀                         ▄█▄         
         ▀█▀                       ▄█▄      █████         
                         ▄██▄     █████      ▀█▀         
    ██           ▄█▄     ▀██▀      ▀█▀                   
                 ▀█▀                                     
           ▄                       ▄█▄       ▄█▄         
          ▀█▀            ▄██▄     █████     █████         
    ██           ▄█▄     ▀██▀      ▀█▀       ▀█▀         
                 ▀█▀                                     
            ▄                       ▄█▄      ▄█▄         
           ▀█▀             ▄██▄    █████    █████         
     ██             ▄█▄    ▀██▀     ▀█▀      ▀█▀         
              ▄     ▀█▀                                   
             ▀█▀                          ▄█▄             
        ██               ▄█▄    ▄██▄     █████           
                   ▄     ▀█▀    ▀██▀      ▀█▀             
                  ▀█▀                                     
             ██                    ▄██▄                   
                     ▄      ▄█▄    ▀██▀                   
                    ▀█▀     ▀█▀                           

▄█    ▄█  ▄█         ▄█████▄    ▀█▄      ▄█▀
██    ██  ██▄▄▄▄▄   ██▀   ▀██     ▀█▄  ▄█▀
██    ██  ██▀▀▀▀██  ██▀▀▀▀▀▀▀       ████   
██    ██  ██    ██  ██▄    ▄█     ▄██▀▀██▄   
▀██████▀  ▀██████▀  ▀███████▀   ▄██▀    ▀██▄
Telegram
Facebook
ANN Thread
Youtube
LinkedIn
Twitter
Medium
Reddit
Github
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!