ASUS B250 Mining Expert MB - 19 Cards!

[Master One]

Running 13 radeon 570. No problemo. Havent tried with 14.For the last 6 u need mining cards.

You mean the ASUS Mining P106, right? Without digging deep, what's the difference with that one so that it can run on shared PCIe lanes?

[Bigdrago]

Case:

Can I connect psu to port1 on mb and give power to gpu and riser that "belongs" to port 2 on mb?

[revbones]

Case:

Can I connect psu to port1 on mb and give power to gpu and riser that "belongs" to port 2 on mb?

I have two PSU's connected to my B250.  The first has the CPU line ran to the board. It also has a molex running to the first set of PCIe slots and if I remember correctly, you are supposed to use the same PSU for all three of the molex slots by the PCIe slots - I'm using the same PSU 1 for that.   Then I have a second PSU that is plugged into the #2 PSU slot on the board and runs to gpu's not connected to the first psu.

[Boriss]

Case:

Can I connect psu to port1 on mb and give power to gpu and riser that "belongs" to port 2 on mb?

I would not experiment, if you can avoid that kind of stuff just go with school examples.
It should work because two PSU should be on same voltage potential but you never know what could happen if one PSU fails.
 

[Metroid]

I would not experiment, if you can avoid that kind of stuff just go with school examples.
It should work because two PSU should be on same voltage potential but you never know what could happen if one PSU fails.
 

Not voltage potential, its called same power phase, if not then everything burns.

[QuintLeo]

If you use powered risers, you don't need to use the MOLEX at all.
Then there is no question of "which PS should be attached to which MOLEX" on the MB.

[revbones]

I have built my first rig using Nividia 1060 GPU's. SMOS Ubuntu USB stick.
So far I've installed 3 GPU's but when I boot it only shows the first one as green and the other two are red. The fan comes on for the first GPU but not the the other two. PSU is working and I'm powering the GPU's and risers from a 1200W corsair.
It is mining on one GPU right now. I've tried to adopt everything I have read on this thread and updated the BIOS. The BIOS has also been updated to the latest from Asus.

Any ideas why it only recognizes and powers one GPU?

Check your cables.  Sounds like either the usb cable isn't running from the PCIe slot to the riser, the riser isn't powered, or the card isn't powered.  Also, make sure you're starting from group 1 of the PCIe slots.  My first B250 wouldn't boot if I didn't have the 4pin molex plugged in for each group even if I had the risers powered separately - so check the instructions on that, but you might have to plug it in as well.

[revbones]

Glad you got it!

Also, double-check the instructions but if I remember correctly you have to have the same power supply plugged into all three (or at least the groups you're using).  I saw somewhere someone was trying different psu's in each or something.  Can't remember, but worth confirming in the instruction manual.

[remauto1187ma]

So after some more reading, I'm now rather considering the Gigabyte B250 instead of the Asus B250 Mining Expert, because shared PCIe lanes are just no good idea.

So what's the catch to be running more than 12 GPUs on the Asus B250? You have to be running GPUs from Asus for the remaining 7 slots, right? If doing it with 12 x GeForce 1070 + 7 x Asus, can it be really running stable?

Running 13 radeon 570. No problemo. Havent tried with 14.
For the last 6 u need mining cards.

My rig 2 is running 10 Nvidia Cards but will show red on the 11th card if added.  Im running windows 10 pro updated to 1709.  Bios is up to date.  8gb (4gb in each slot).  Runs flawlessly with 10 cards and its a set it and forget rig until you stick that 11th card in then it will not see it in device manager.  So i obviously didnt follow the owners manual about mixing in AMD cards (I only own 8 AMD cards and they are on a nother B250 m/b).  Has anyone else had this no 11th card recognize problem?

[john1010]

I had also a problem with this mobo, after my bios update I was not able to save the bios settings, it always back to cpu instead of pcie, it's annoying!

[remauto1187ma]

FYI
I Fixed It!!!
Reinstalled Invidia driver & reboot.
Then - DAG Error 11
Increased virtual memory from 16 to 32
RX580's seem slow, I will have to look into OC Bios

One glitch I've noticed - Win10 - When 2nd bank of GPU's is used - When I try to click on the Window/Start Button nothing happens.  I have to right click and choose an option from that menu.  Wish I new Linux.  But I barely know Windows.

My rig 1 B250 Asus ME board has this same glitch when you click on windows/start button too. This rig has 6 AMD cards on it and 2 Nvidia.

[revbones]

I've had much better luck with the previous BIOS update and not the latest.  I had some performance issues on the latest and quickly reverted back.

[Boriss]

The molex were the issue. I had to plug them all in. Thanks for your help

What cards do you have on your rig.
Its strange because even the Asus on their test bench didn't use molex because of powered risers.

[Master One]

If you use powered risers, you don't need to use the MOLEX at all. Then there is no question of "which PS should be attached to which MOLEX" on the MB.

Does that mean either using powered risers and no MOLEX, or passive risers with MOLEX will lead to the same result?

(I don't have that board, just curious)

[Boriss]

If you use powered risers, you don't need to use the MOLEX at all. Then there is no question of "which PS should be attached to which MOLEX" on the MB.

Does that mean either using powered risers and no MOLEX, or passive risers with MOLEX will lead to the same result?

(I don't have that board, just curious)

It should be like that, look at this asus build, not even one picture with molex pluged in.




http://edgeup.asus.com/2017/b250-mining-expert-motherboard-19-pcie-blockchain-beast/

[Bigdrago]

I dont use molex

13 amd radeon 570
2x evga g2 1600w (gpu + risers powered directly from vga slots on psu)
Pentium g4560
4gb ram
Win 10

Currently hashing 30.2 mh/s on each gpu.
Power draw from the wall: 1520W 220V

OC directly in claymore
Clocks/volt 1150/0850 2150/0850

2 more rigs coming up this weekend.
It is very stable. Mining for a week without issues.

[kriskarthik]

If you use powered risers, you don't need to use the MOLEX at all. Then there is no question of "which PS should be attached to which MOLEX" on the MB.

Does that mean either using powered risers and no MOLEX, or passive risers with MOLEX will lead to the same result?

(I don't have that board, just curious)

I recently had the motherboard burned. Was connecting all 3 into one supply. My risers are powered thru 6pin separately. If above is true not sure why my moles were burnt     Or I misunderstood something. Any help ?

[Metroid]

It should be like that, look at this asus build, not even one picture with molex pluged in.

There is no need for the molex 1,2,3 to be connected, is not drawing any power from the motherboard pci. The 3 molex as far as I understand on this motherboard is to make the board stable when all 19 gpus are connected. If the motherboard is already stable without all the 3 molex then there is no need.

[remauto1187ma]

I would not experiment, if you can avoid that kind of stuff just go with school examples.
It should work because two PSU should be on same voltage potential but you never know what could happen if one PSU fails.
 

Not voltage potential, its called same power phase, if not then everything burns.

Power phase from a Direct Current power supply huh?  The inherent traits of a AC-DC switching power supply is that the output is directly isolated from the input.  There is no such thing as phase on the DC side of a power supply.

The reason they dont want you to mix power supply feeds that are powering different GPU banks (A, B, C) is so you dont have bank A trying to draw off of B power supply which can lead to excessive current amounts flowing in conductive traces of the motherboard.  Amounts of current that are actually higher than what the board traces are rated for.  Get in that situation and your traces on the motherboard will become a fusible link and burn open.

[QuintLeo]

I would not experiment, if you can avoid that kind of stuff just go with school examples.
It should work because two PSU should be on same voltage potential but you never know what could happen if one PSU fails.
 

Not voltage potential, its called same power phase, if not then everything burns.

There is no "phase" to DC.
Different power supplies WILL have slightly different voltage outputs though, usually.