I was able to run both Tis with no interruptions for two days with those clocks. Thank you very much leonix007 and philipma1957.

Hi,


I have two msi GeForce GTX 1080 ti Aero graphics cards connected to a 850W PSU. The PSU also powers the motherboard and the HDD. I am having stability issues. With windows 7, the windows would crash and reboot. After installing windows 10, the problem switched to, after some time, the mining program (I tried nicehash and awesome miner) stops recognizing one of the graphics cards.


I saw in the spec sheet that each graphics card consumed 300W so I thought that 850W would be enough. As such, I have two questions:

1) What PSU power do I need in order to run both graphics cards whitout stability issues?

2) With the PSU that I have (850W), using msi afterburner to reduce the max power of each graphics card, is it possible to avoid this stability problem? If so, to what percentage should I reduce?


Best regards,

Paulo

Hi,

I was able to connect the 2nd 1080ti aero. I used the two 6+2 connectors to power each 8 pin of the gpus and the double molex to 6 pin adaptors to power each 6 pin of the gpus. I have one image here:

https://imgur.com/a/2PhHp

The gpu directly connected to the motherboard is mining zcash at 700 sols and the gpu connect with the riser is mining zcash at 670 sols. Is this difference normal? I have an image here:
https://imgur.com/a/ALkeB


Also, I have average temperatures of 83ºC in each card, is this ok?

Best regards,
Pauçp

Thank you for your suggestions, carlo_0000, Signaturan, Amstellodamois, Zakairdrop and BitMaker2017.

I already bought the two double molex to 6pin pci-e adaptors. I will try to connect the 6pin cables on the gpu with them and then I will let you know how it went. I also bought one double molex to 8pin pci-e adaptor, in the event that the two 6+2 pin cabels that I already have are to short and I can't use them to power each 8pin of the gpu.

Thank you all once again for your valuable help.

Best regards,
Paulo

Dear carlo_0000,

thank you very much for the swiftness of your reply.

I will power each 8 pin of the gpus with the two 8 pin cables that I already have. To power the remaining two 6 pins I will buy two double molex to 6pin adapters and connect one to each card.

Thank you once again.

Best regards,
Paulo

Dear carlo_0000,

thank you very much for your detailed explanation, I really had no idea.

My 1080ti gpu needs a 8 pin plus a 6 pin.

Can I use a double molex to 8 pin adapter to power the 8 pin and then a sata to 6 pin adapter to power the 6 pin?

Double molex to 8 pin:
https://imgur.com/a/9GsbG

Sata to 6 pin:
https://imgur.com/a/q16QY

There is also a double sata to 6 pin:
https://imgur.com/a/eyqlj

Best regards,
Paulo

It also has molex cables.

Can I use a molex to 6 pin adapter and then a 6 pin to a double 8 (6+2) pin adapter? Or is that also unsafe?

Thank you for the swiftness of your reply.

The power supply also has SATA, PATA and FDD cables.

What do you recommend?

Hi,

I have a 700W power supply and I would like to power a second 1080ti with it. However, my power supply only has one double 8pin (6+2) cable. I'm putting a picture of it in the link bellow.

https://imgur.com/a/4lPs8

I would like to know if it safe to attach a power splitter cable to each of my 8 pin cables in order to have four 8 pin cables and power the second gpu. Something such as this:

https://imgur.com/a/jSqIr

Thank you in advance,
Paulo

Ok, thank you very much for the advice.

Hi,

I would like to ask you, in your experience, what are good chip temperatures and fan speeds in order to prolong the usage-life of an antminer s9. Also, do you perform any kind of maintenance operations?

Best regards,
Paulo

Tuaris and Haudini,

after I installed the older firmware and replaced the ethernet cable, the message "socket Connect failed" also appeared. However, after 2 or 3 minutes it disappeared and my S9 connected to the pools. I have NiceHash as my 1st pool, and slush as my 2nd pool.

Dear all,

the fan problem was a mistake on my part. I unbolted the metal protection in the intake to see if I could fit a 3D printed part. When I bolted it on again, I put it in the reverse direction and it was blocking one fan blade. I bolted it the proper way and now everything is fine.

So, the solve the "No data in Miner Status page", what I did was to install an older version of the firmware, specifically, Antminer-S9-all-201704270135-autofreq-user-Update2UBI-NF.tar.gz, which is bitmain's suggestion to replace Antminer-S9-all-201704280713-autofreq-user-Update2UBI-NF.tar, the file proposed by fanatic26. I also changed my ethernet cable as porposed by Sandal_Hat.

Thank you very much fanatic26! Thank you very much Sandal_Hat! I would also like to thank all the users that shared their advice with me in this thread:
BitMaxz
Seven_Little_Guys
jafolkerts
fanatic26
jafolkerts
je_mario
KWMiner
LENIN12345
Sandal_Hat

Best regards,
Paulo

Thank you jafolkerts, fanatic26, je_mario, KWMiner, LENIN12345 and Sandal_Hat for your responses.


I tried to install the newest firmware (last row of the table in the link bellow) and I couldn't connect to the pool. Then I installed the one you recommended (first row of the table in the link bellow) and I was able to connect. However one of the fans (the front/intake fan) stopped being recognized, it does not even spin, and a fan-related error appeared in the Kernel file.

Does anyone have an idea on how to solve the fab not being recognized problem?

Best regards,
Paulo


Link to firmware:
https://shop.bitmain.com/support.htm?pid=00720161126080548570Q2tDBXAH065D

Thank you for your reply Seven_Little_Guys,

Were you able to solve it? I'm also using the APW 3++ PSU. I got my S9 one week ago, they're probably from the same batch.

Best regards,
Paulo

Thank you for your reply Bitmax,

in your opinion, which S9 firmware should I install? There are a lot of options in the Bitmain website and I'm not sure what is the proper one for my device (it's a 14 THs, shipping 11-20 Dec).

https://imgur.com/a/19hr9

https://shop.bitmain.com/support.htm?pid=00720161126080548570Q2tDBXAH065D

Hi,

I recently recieved my Antminer S9-14TH/s Shipping: 11-20 Dec. I spent the entire day trying to connect it to antpool but the Miner Status page appears blank. In the System page, there doesn't appear information regarding Hardware Version nor BMminer Version. I'm posting print screens bellow. What could be causing this and how can I solve it?
Best regards,
Paulo

https://imgur.com/a/1nnt1