My second ZEC + XMR+ ETH thread builds info links thoughts and photos.

[xleejohnx]

The 4mh Issue:

Phil, I tried all tests that you recommended.

-only 1 gpu installed (I removed 5 gpu's until I can resolve this issue)
-set the Bios to Gen1 for all slots
-tried moving the 1 gpu to different slots on mobo to include installing directly on the slots on the mob
-uninstalled and reinstalled all versions of drivers (16.9.2, 16.9.1, 16.7.3)  I now have 16.9.2 installed


Still having the 4mh issue on the 1 card that I have installed.  Anyone have a solution?

so  this one card  with 4mh put it in a box  and do a second card different  does it work?

I was always able to get the trouble to leave.

But are you saying  you have six cards and  only one specific card does the 4mh issue?

if you put the 4mh card aside the other 5 all work?


Some have had that  issue and sent the one card in for rma.


in all of my cases  my 4mh issues  are not card specific  ie  one card would show 4mh  pull it put in a completely different card  and  still have a 4mh issue.

so my cases have all been board-driver-card conflict issues.

your description seems to say  it is always the same card.

some write ups have said this and rma was the only fix.

I am really trying to understand if you are card specific  vs floating  around  with your problem.

BTW i hate this issue  as it has been the hardest one to fix for me.

right now I have 19 cards on 5 machines all doing 20-25mh

and I dread that the 4mh issue can reappear-----------------------it has at times.

The 4mh Issue

in all of my cases  my 4mh issues  are not card specific  ie  one card would show 4mh  pull it put in a completely different card, in a different slot on mob and  still have a 4mh issue.

Example:  This is a different gpu in slot #3 - Same Problem:

what mobo do you have again?

[Iegion]

[/quote]

The 4mh Issue

in all of my cases  my 4mh issues  are not card specific  ie  one card would show 4mh  pull it put in a completely different card, in a different slot on mob and  still have a 4mh issue.

Example:  This is a different gpu in slot #3 - Same Problem:

https://i.imgur.com/LmgvhTF.png


[/quote]


I had this problem once. i think it was becuase the gpu is stuck at step 0 - 300mhz . I think i solved it by unhooking the monitor.

[AriesIV10]

The 4mh Issue:

Phil, I tried all tests that you recommended.

-only 1 gpu installed (I removed 5 gpu's until I can resolve this issue)
-set the Bios to Gen1 for all slots
-tried moving the 1 gpu to different slots on mobo to include installing directly on the slots on the mob
-uninstalled and reinstalled all versions of drivers (16.9.2, 16.9.1, 16.7.3)  I now have 16.9.2 installed


Still having the 4mh issue on the 1 card that I have installed.  Anyone have a solution?

so  this one card  with 4mh put it in a box  and do a second card different  does it work?

I was always able to get the trouble to leave.

But are you saying  you have six cards and  only one specific card does the 4mh issue?

if you put the 4mh card aside the other 5 all work?


Some have had that  issue and sent the one card in for rma.


in all of my cases  my 4mh issues  are not card specific  ie  one card would show 4mh  pull it put in a completely different card  and  still have a 4mh issue.

so my cases have all been board-driver-card conflict issues.

your description seems to say  it is always the same card.

some write ups have said this and rma was the only fix.

I am really trying to understand if you are card specific  vs floating  around  with your problem.

BTW i hate this issue  as it has been the hardest one to fix for me.

right now I have 19 cards on 5 machines all doing 20-25mh

and I dread that the 4mh issue can reappear-----------------------it has at times.

The 4mh Issue

in all of my cases  my 4mh issues  are not card specific  ie  one card would show 4mh  pull it put in a completely different card, in a different slot on mob and  still have a 4mh issue.

Example:  This is a different gpu in slot #3 - Same Problem:

what mobo do you have again?

I returned the Gigabite Gaming 3 Motherboard that had the same issues and now have a MSI Z97 Gaming 5 Motherboard.

[AriesIV10]

The 4mh Issue

in all of my cases  my 4mh issues  are not card specific  ie  one card would show 4mh  pull it put in a completely different card, in a different slot on mob and  still have a 4mh issue.

Example:  This is a different gpu in slot #3 - Same Problem:




[/quote]


I had this problem once. i think it was becuase the gpu is stuck at step 0 - 300mhz . I think i solved it by unhooking the monitor.
[/quote]

The 4mh Issue

Iegion - You Are Da Man!  Problem Solved!

Connected to the Rig via Teamviewer, unplugged the monitor, rebooted........The Rig with all gpu's are running at 19.8mh each (I will now have to work on getting 19.8 up to 25-28mh). 

THANK YOU VERY MUCH!

[philipma1957]

The 4mh Issue

in all of my cases  my 4mh issues  are not card specific  ie  one card would show 4mh  pull it put in a completely different card, in a different slot on mob and  still have a 4mh issue.

Example:  This is a different gpu in slot #3 - Same Problem:

I had this problem once. i think it was becuase the gpu is stuck at step 0 - 300mhz . I think i solved it by unhooking the monitor.
[/quote]

The 4mh Issue

Iegion - You Are Da Man!  Problem Solved!

Connected to the Rig via Teamviewer, unplugged the monitor, rebooted........The Rig with all gpu's are running at 19.8mh each (I will now have to work on getting 19.8 up to 25-28mh).  

THANK YOU VERY MUCH!
[/quote]

I am going to shift this to top post.  Good info for all to see.
First post on the bottom:

https://bitcointalk.org/index.php?topic=1584973.msg15913928#msg15913928

[xleejohnx]

The 4mh Issue

in all of my cases  my 4mh issues  are not card specific  ie  one card would show 4mh  pull it put in a completely different card, in a different slot on mob and  still have a 4mh issue.

Example:  This is a different gpu in slot #3 - Same Problem:

I had this problem once. i think it was becuase the gpu is stuck at step 0 - 300mhz . I think i solved it by unhooking the monitor.
[/quote]

The 4mh Issue

Iegion - You Are Da Man!  Problem Solved!

Connected to the Rig via Teamviewer, unplugged the monitor, rebooted........The Rig with all gpu's are running at 19.8mh each (I will now have to work on getting 19.8 up to 25-28mh). 

THANK YOU VERY MUCH!
[/quote]

if you need help with overclocking va bios let me know

[AriesIV10]

I would like to thank Phil, Iegion and xleejohnx for helping get this far! THANK YOU!

Situation:

I have 6 MSI RX 470X GPUs running:
-each gpu hashing  = 23.5mh
-total system hashing  = 141.2mh
-ave wattage = 94W (range 86-104)
-total system Watts = 1115W
-total system Amps = 9.61A
-2 Antec 750 Platinum PSUs
-Motherboard = MSI Z97 Gaming 5

Question:

I am planning to goto 28mh on each gpu.  

1) Would you recommend adding another gpu?  

2) How many watts would going from 23.5 to 28mh add to the system?

3) Has anyone done 7 gpu's?

[Imgur](https://i.imgur.com/RyNtx0B.jpg)
[Imgur](https://i.imgur.com/RYFsSvq.jpg)
[Imgur](https://i.imgur.com/klZU7NP.jpg)

[xleejohnx]

I would like to thank Phil, Iegion and xleejohnx for helping get this far! THANK YOU!

Situation:

I have 6 MSI RX 470X GPUs running:
-each gpu hashing  = 23.5mh
-total system hashing  = 141.2mh
-ave wattage = 94W (range 86-104)
-total system Watts = 1115W
-total system Amps = 9.61A
-2 Antec 750 Platinum PSUs
-Motherboard = MSI Z97 Gaming 5

Question:

I am planning to goto 28mh on each gpu.  

1) Would you recommend adding another gpu?  

2) How many watts would going from 23.5 to 28mh add to the system?

3) Has anyone done 7 gpu's?

[Imgur](https://i.imgur.com/RyNtx0B.jpg)
[Imgur](https://i.imgur.com/RYFsSvq.jpg)
[Imgur](https://i.imgur.com/klZU7NP.jpg)

That power draw is dual mining correct?
Personally I have issues with anything over 5 cards. I can't keep them stable at all with 6 unless they were stock bios

[AriesIV10]

I would like to thank Phil, Iegion and xleejohnx for helping get this far! THANK YOU!

Situation:

I have 6 MSI RX 470X GPUs running:
-each gpu hashing  = 23.5mh
-total system hashing  = 141.2mh
-ave wattage = 94W (range 86-104)
-total system Watts = 1115W
-total system Amps = 9.61A
-2 Antec 750 Platinum PSUs
-Motherboard = MSI Z97 Gaming 5

Question:

I am planning to goto 28mh on each gpu.  

1) Would you recommend adding another gpu?  

2) How many watts would going from 23.5 to 28mh add to the system?

3) Has anyone done 7 gpu's?

[Imgur](https://i.imgur.com/RyNtx0B.jpg)
[Imgur](https://i.imgur.com/RYFsSvq.jpg)
[Imgur](https://i.imgur.com/klZU7NP.jpg)

That power draw is dual mining correct?
Personally I have issues with anything over 5 cards. I can't keep them stable at all with 6 unless they were stock bios

I am using dual mining, but am just using 1 channel "ETH".  This are very stable rates.

[citronick]

I would like to thank Phil, Iegion and xleejohnx for helping get this far! THANK YOU!

Situation:

I have 6 MSI RX 470X GPUs running:
-each gpu hashing  = 23.5mh
-total system hashing  = 141.2mh
-ave wattage = 94W (range 86-104)
-total system Watts = 1115W
-total system Amps = 9.61A
-2 Antec 750 Platinum PSUs
-Motherboard = MSI Z97 Gaming 5

Question:

I am planning to goto 28mh on each gpu.  

1) Would you recommend adding another gpu?  

2) How many watts would going from 23.5 to 28mh add to the system?

3) Has anyone done 7 gpu's?

6 x 470 with 1000w or 1300w PSU should do it, avoiding using 2 x PSU which can introduce more complicated issues with power distribution.

Adding a 7th card will surely increase wattage and you motherboard will need to have more than 6 x PCI slots, unless using a multiplexor

I have a R7 370 x 7 using a 1-to-3 PCI multiplexor, running Win7, running strong with CDM v7.2, Crimson 16.9.2, drawing about 1200w from a EVGA 1600-G2.

7 x GPUs max on Windows, 8 x GPUs if using registry modded Windows Advanced Server, otherwise Linux can go beyond 6 with ease.

To increase hash.... if you adventurous ... you can mod your rom ... https://bitcointalk.org/index.php?topic=1584617.msg16476759#msg16476759

[methylminer]

I would like to thank Phil, Iegion and xleejohnx for helping get this far! THANK YOU!

Situation:

I have 6 MSI RX 470X GPUs running:
-each gpu hashing  = 23.5mh
-total system hashing  = 141.2mh
-ave wattage = 94W (range 86-104)
-total system Watts = 1115W
-total system Amps = 9.61A
-2 Antec 750 Platinum PSUs
-Motherboard = MSI Z97 Gaming 5

Question:

I am planning to goto 28mh on each gpu.  

1) Would you recommend adding another gpu?  

2) How many watts would going from 23.5 to 28mh add to the system?

3) Has anyone done 7 gpu's?

6 x 470 with 1000w or 1300w PSU should do it, avoiding using 2 x PSU which can introduce more complicated issues with power distribution.

Adding a 7th card will surely increase wattage and you motherboard will need to have more than 6 x PCI slots, unless using a multiplexor

I have a R7 370 x 7 using a 1-to-3 PCI multiplexor, running Win7, running strong with CDM v7.2, Crimson 16.9.2, drawing about 1200w from a EVGA 1600-G2.

7 x GPUs max on Windows, 8 x GPUs if using registry modded Windows Advanced Server, otherwise Linux can go beyond 6 with ease.

To increase hash.... if you adventurous ... you can mod your rom ... https://bitcointalk.org/index.php?topic=1584617.msg16476759#msg16476759

I've got 7 going right now on the msi gaming 5. You need a 16x to 16x riser for the main pcie port and windows 10.

Its a mixed GPU rig: 4 msi 4g 470s at 27.5mh, one 370, one 380, and a 1070.

[AriesIV10]

I would like to thank Phil, Iegion and xleejohnx for helping get this far! THANK YOU!

Situation:

I have 6 MSI RX 470X GPUs running:
-each gpu hashing  = 23.5mh
-total system hashing  = 141.2mh
-ave wattage = 94W (range 86-104)
-total system Watts = 1115W
-total system Amps = 9.61A
-2 Antec 750 Platinum PSUs
-Motherboard = MSI Z97 Gaming 5

Question:

I am planning to goto 28mh on each gpu.  

1) Would you recommend adding another gpu?  

2) How many watts would going from 23.5 to 28mh add to the system?

3) Has anyone done 7 gpu's?

6 x 470 with 1000w or 1300w PSU should do it, avoiding using 2 x PSU which can introduce more complicated issues with power distribution.

Adding a 7th card will surely increase wattage and you motherboard will need to have more than 6 x PCI slots, unless using a multiplexor

I have a R7 370 x 7 using a 1-to-3 PCI multiplexor, running Win7, running strong with CDM v7.2, Crimson 16.9.2, drawing about 1200w from a EVGA 1600-G2.

7 x GPUs max on Windows, 8 x GPUs if using registry modded Windows Advanced Server, otherwise Linux can go beyond 6 with ease.

To increase hash.... if you adventurous ... you can mod your rom ... https://bitcointalk.org/index.php?topic=1584617.msg16476759#msg16476759

I've got 7 going right now on the msi gaming 5. You need a 16x to 16x riser for the main pcie port and windows 10.

Its a mixed GPU rig: 4 msi 4g 470s at 27.5mh, one 370, one 380, and a 1070.

Wow, that is a crazy rig!  How many watts are your 470s pulling at 27.5mh?  How did you get them to 27.5mh?  What is your "at the wall" wattage?

[LoneRangir]

I'm having a hard time getting more than 4 cards to work on my Gigabyte Z97 Force SOC board. Using W7 and mixing x1 risers and plugging cards directly into the MB (More risers on order, not here yet). Any suggestions?

[philipma1957]

I'm having a hard time getting more than 4 cards to work on my Gigabyte Z97 Force SOC board. Using W7 and mixing x1 risers and plugging cards directly into the MB (More risers on order, not here yet). Any suggestions?

can you try windows 10  without killing off your windows 7 build?

as always  mobo to mobo has a lot of variance and sometimes windows 10 is better then windows 7

[LoneRangir]

No, not easily. I could try, *gulp*, Linux... I had it working on another machine once. I could get it going again.

I still need to post my pics of my open air build, but I was going to wait till it's all working! I'll never get there at this rate.

[AriesIV10]

I would like to thank Phil, Iegion and xleejohnx for helping get this far! THANK YOU!

Situation:

I have 6 MSI RX 470X GPUs running:
-each gpu hashing  = 23.5mh
-total system hashing  = 141.2mh
-ave wattage = 94W (range 86-104)
-total system Watts = 1115W
-total system Amps = 9.61A
-2 Antec 750 Platinum PSUs
-Motherboard = MSI Z97 Gaming 5

Question:

I am planning to goto 28mh on each gpu.  

1) Would you recommend adding another gpu?  

2) How many watts would going from 23.5 to 28mh add to the system?

3) Has anyone done 7 gpu's?

6 x 470 with 1000w or 1300w PSU should do it, avoiding using 2 x PSU which can introduce more complicated issues with power distribution.

Adding a 7th card will surely increase wattage and you motherboard will need to have more than 6 x PCI slots, unless using a multiplexor

I have a R7 370 x 7 using a 1-to-3 PCI multiplexor, running Win7, running strong with CDM v7.2, Crimson 16.9.2, drawing about 1200w from a EVGA 1600-G2.

7 x GPUs max on Windows, 8 x GPUs if using registry modded Windows Advanced Server, otherwise Linux can go beyond 6 with ease.

To increase hash.... if you adventurous ... you can mod your rom ... https://bitcointalk.org/index.php?topic=1584617.msg16476759#msg16476759

I've got 7 going right now on the msi gaming 5. You need a 16x to 16x riser for the main pcie port and windows 10.

Its a mixed GPU rig: 4 msi 4g 470s at 27.5mh, one 370, one 380, and a 1070.

Wow, that is a crazy rig!  How many watts are your 470s pulling at 27.5mh?  How did you get them to 27.5mh?  What is your "at the wall" wattage?

I just ran out an bought another gpu.  That makes 7 gpu's on 1 rig.  The rig will only start with 6 gpu's!  What can I do to get the 7th running?  
Note:  I can disconnect any of the gpus and the rig will start just fine, but when I plug in the 7th, it will not start.

Any ideas to get all 7 gpu's to work with this rig?

[philipma1957]

I would like to thank Phil, Iegion and xleejohnx for helping get this far! THANK YOU!

Situation:

I have 6 MSI RX 470X GPUs running:
-each gpu hashing  = 23.5mh
-total system hashing  = 141.2mh
-ave wattage = 94W (range 86-104)
-total system Watts = 1115W
-total system Amps = 9.61A
-2 Antec 750 Platinum PSUs
-Motherboard = MSI Z97 Gaming 5

Question:

I am planning to goto 28mh on each gpu.  

1) Would you recommend adding another gpu?  

2) How many watts would going from 23.5 to 28mh add to the system?

3) Has anyone done 7 gpu's?

6 x 470 with 1000w or 1300w PSU should do it, avoiding using 2 x PSU which can introduce more complicated issues with power distribution.

Adding a 7th card will surely increase wattage and you motherboard will need to have more than 6 x PCI slots, unless using a multiplexor

I have a R7 370 x 7 using a 1-to-3 PCI multiplexor, running Win7, running strong with CDM v7.2, Crimson 16.9.2, drawing about 1200w from a EVGA 1600-G2.

7 x GPUs max on Windows, 8 x GPUs if using registry modded Windows Advanced Server, otherwise Linux can go beyond 6 with ease.

To increase hash.... if you adventurous ... you can mod your rom ... https://bitcointalk.org/index.php?topic=1584617.msg16476759#msg16476759

I've got 7 going right now on the msi gaming 5. You need a 16x to 16x riser for the main pcie port and windows 10.

Its a mixed GPU rig: 4 msi 4g 470s at 27.5mh, one 370, one 380, and a 1070.

Wow, that is a crazy rig!  How many watts are your 470s pulling at 27.5mh?  How did you get them to 27.5mh?  What is your "at the wall" wattage?

I just ran out an bought another gpu.  That makes 7 gpu's on 1 rig.  The rig will only start with 6 gpu's!  What can I do to get the 7th running?  
Note:  I can disconnect any of the gpus and the rig will start just fine, but when I plug in the 7th, it will not start.

Any ideas to get all 7 gpu's to work with this rig?

funny i am trying to bump a 4 card to a 5 card. and one card is fucking around.

as for a 7 card no way will i try it.

[xleejohnx]

I would like to thank Phil, Iegion and xleejohnx for helping get this far! THANK YOU!

Situation:

I have 6 MSI RX 470X GPUs running:
-each gpu hashing  = 23.5mh
-total system hashing  = 141.2mh
-ave wattage = 94W (range 86-104)
-total system Watts = 1115W
-total system Amps = 9.61A
-2 Antec 750 Platinum PSUs
-Motherboard = MSI Z97 Gaming 5

Question:

I am planning to goto 28mh on each gpu.  

1) Would you recommend adding another gpu?  

2) How many watts would going from 23.5 to 28mh add to the system?

3) Has anyone done 7 gpu's?

6 x 470 with 1000w or 1300w PSU should do it, avoiding using 2 x PSU which can introduce more complicated issues with power distribution.

Adding a 7th card will surely increase wattage and you motherboard will need to have more than 6 x PCI slots, unless using a multiplexor

I have a R7 370 x 7 using a 1-to-3 PCI multiplexor, running Win7, running strong with CDM v7.2, Crimson 16.9.2, drawing about 1200w from a EVGA 1600-G2.

7 x GPUs max on Windows, 8 x GPUs if using registry modded Windows Advanced Server, otherwise Linux can go beyond 6 with ease.

To increase hash.... if you adventurous ... you can mod your rom ... https://bitcointalk.org/index.php?topic=1584617.msg16476759#msg16476759

I've got 7 going right now on the msi gaming 5. You need a 16x to 16x riser for the main pcie port and windows 10.

Its a mixed GPU rig: 4 msi 4g 470s at 27.5mh, one 370, one 380, and a 1070.

Wow, that is a crazy rig!  How many watts are your 470s pulling at 27.5mh?  How did you get them to 27.5mh?  What is your "at the wall" wattage?

I just ran out an bought another gpu.  That makes 7 gpu's on 1 rig.  The rig will only start with 6 gpu's!  What can I do to get the 7th running?  
Note:  I can disconnect any of the gpus and the rig will start just fine, but when I plug in the 7th, it will not start.

Any ideas to get all 7 gpu's to work with this rig?

funny i am trying to bump a 4 card to a 5 card. and one card is fucking around.

as for a 7 card no way will i try it.

7 cards is a gamble imo. Sometimes it'll work first then sometimes never
What issue are you having Phil?  Maybe I can help

[methylminer]

I'll test my watts later this weekend. I need to dust off my UPS and check for at the wall settings.

I tried lowering the voltage for the 470s but kept getting restarts so I just set the voltage to automatic and used a rom I found for the MSI 470.

Windows 7 didn't work for 7 gpus even with the 6gpu mod. I had to upgrade to windows 10.

During the upgrade it warned me that my modified bios GPUs wouldn't be compatible with Windows 10. I said pshh and did it anyway. All the 470s had code 43 errors after the upgrade. Reinstalled the drivers with DDU, amd cleanup utility and CCleaner (for leftover registry entries). Use the windows 10 drivers to reinstall.

After that all 7 were detected. Although I might have added the non 470s one by one after that, can't remember. I'll post some pics this weekend.

[philipma1957]

I would like to thank Phil, Iegion and xleejohnx for helping get this far! THANK YOU!

Situation:

I have 6 MSI RX 470X GPUs running:
-each gpu hashing  = 23.5mh
-total system hashing  = 141.2mh
-ave wattage = 94W (range 86-104)
-total system Watts = 1115W
-total system Amps = 9.61A
-2 Antec 750 Platinum PSUs
-Motherboard = MSI Z97 Gaming 5

Question:

I am planning to goto 28mh on each gpu.  

1) Would you recommend adding another gpu?  

2) How many watts would going from 23.5 to 28mh add to the system?

3) Has anyone done 7 gpu's?

6 x 470 with 1000w or 1300w PSU should do it, avoiding using 2 x PSU which can introduce more complicated issues with power distribution.

Adding a 7th card will surely increase wattage and you motherboard will need to have more than 6 x PCI slots, unless using a multiplexor

I have a R7 370 x 7 using a 1-to-3 PCI multiplexor, running Win7, running strong with CDM v7.2, Crimson 16.9.2, drawing about 1200w from a EVGA 1600-G2.

7 x GPUs max on Windows, 8 x GPUs if using registry modded Windows Advanced Server, otherwise Linux can go beyond 6 with ease.

To increase hash.... if you adventurous ... you can mod your rom ... https://bitcointalk.org/index.php?topic=1584617.msg16476759#msg16476759

I've got 7 going right now on the msi gaming 5. You need a 16x to 16x riser for the main pcie port and windows 10.

Its a mixed GPU rig: 4 msi 4g 470s at 27.5mh, one 370, one 380, and a 1070.

Wow, that is a crazy rig!  How many watts are your 470s pulling at 27.5mh?  How did you get them to 27.5mh?  What is your "at the wall" wattage?

I just ran out an bought another gpu.  That makes 7 gpu's on 1 rig.  The rig will only start with 6 gpu's!  What can I do to get the 7th running?  
Note:  I can disconnect any of the gpus and the rig will start just fine, but when I plug in the 7th, it will not start.

Any ideas to get all 7 gpu's to work with this rig?

funny i am trying to bump a 4 card to a 5 card. and one card is fucking around.

as for a 7 card no way will i try it.

7 cards is a gamble imo. Sometimes it'll work first then sometimes never
What issue are you having Phil?  Maybe I can help

okay an asrock h81 with 1 4gb stick of ram.  runs four cards great.

add a fifth card and only four drivers load I get error 43.

every card works in the full slot as the 1 and only card
every card works in the 1x riser slots 1 at a time.

all combos of 1x riser work up to four cards on the fifth card fuck you bitch and it won't load.

so with all testing i did I am pretty certain all five of my riser boards are good

 I am pretty sure all five cards are good

i am pretty sure the 16 slot  is good.

I run windows 7 pro.  so has anyone got windows 7 to run 5 boards. on a h81.?

and maybe  need a simple mobo setting.