Topic: Octominer B8PLUS 8 PCIe Slot Mining Board (Motherboard, integrated CPU) (Read 35301 times)
October 11, 2020, 08:04:31 PM
So about 18 months into use, my Octominer B8PLUS motherboard murdered a pair of GPU's and fried the PCIe slots. The case is awesome, but I'm not willing to buy a replacement board. Does anyone have any suggestions for motherboards that would fit the octominer B8PLUS case to transform it into an air cooling monster gaming rig or something useful? It makes me sad whenever I see the case and AX1600i PSU just sitting there.
July 14, 2020, 01:25:29 PM
gigi1234, glad you got it going. This discussion was productive for me too, I had been looking for breakouts that had more than 12 connectors and you pointed me to a couple, thanks!
July 14, 2020, 04:45:14 AM
my rig draws 1.5/1.6kW so i need two psu-s.
diffrent breakout boards didnt work, so i got in touch with my fellow miner who had same brekaout board and now its fine
diffrent breakout boards didnt work, so i got in touch with my fellow miner who had same brekaout board and now its fine
July 13, 2020, 12:15:32 PM
tnx for the answers, i have these to breakout boards, one has sync connector(floppy), one hasnt because has autosync feature:
- This Breakout Board Adapter built-in Sync ON / OFF switch:
- Retains its state - Switch the button to A, if mining rig suddenly loses power, the PSU will start automatically when power is reset.
- Sync ON / OFF - Switch the button to B, the main power supply and the secondary power supply can power ON/OFF simultaneously.
so I should put brekaout board that has sync floppy connector at main PSU and other one that has auto sync at 2nd PSU? Also i dont have to connect 1st brekaout board withy sync floppy cable to anthying?
these are the brekaoutboards:
https://bitcoinmerch.com/products/1200w-750w-breakout-board-for-hp-psu-gpu-mining-ethereum-zec-zcash-eth-w-button
https://www.ebay.co.uk/itm/Breakout-Board-for-HP-Power-Supply-GPU-Mining-17x-6Pin-PCI-e-Slots-Set-of-2/202878049656?_trkparms=aid%3D1110001%26algo%3DSPLICE.SIM%26ao%3D2%26asc%3D225076%26meid%3D53618420d9924325a58f76fec7f9b2e1%26pid%3D100623%26rk%3D3%26rkt%3D6%26mehot%3Des%26sd%3D352425312134%26itm%3D202878049656%26pmt%3D1%26noa%3D1%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWeb&_trksid=p2047675.c100623.m-1
- This Breakout Board Adapter built-in Sync ON / OFF switch:
- Retains its state - Switch the button to A, if mining rig suddenly loses power, the PSU will start automatically when power is reset.
- Sync ON / OFF - Switch the button to B, the main power supply and the secondary power supply can power ON/OFF simultaneously.
so I should put brekaout board that has sync floppy connector at main PSU and other one that has auto sync at 2nd PSU? Also i dont have to connect 1st brekaout board withy sync floppy cable to anthying?
these are the brekaoutboards:
https://bitcoinmerch.com/products/1200w-750w-breakout-board-for-hp-psu-gpu-mining-ethereum-zec-zcash-eth-w-button
https://www.ebay.co.uk/itm/Breakout-Board-for-HP-Power-Supply-GPU-Mining-17x-6Pin-PCI-e-Slots-Set-of-2/202878049656?_trkparms=aid%3D1110001%26algo%3DSPLICE.SIM%26ao%3D2%26asc%3D225076%26meid%3D53618420d9924325a58f76fec7f9b2e1%26pid%3D100623%26rk%3D3%26rkt%3D6%26mehot%3Des%26sd%3D352425312134%26itm%3D202878049656%26pmt%3D1%26noa%3D1%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWeb&_trksid=p2047675.c100623.m-1
My first thought is that you may not need multiple power supplies to run your rig if you are drawing less than 1200 watts, do you have a wattmeter to check? Your breakout boards will also support a 1600w psu which would be another option to stay with one psu if you need less than 1600w. I have several rigs with 6 or even 8 gpus that draw less than 1200w. You may need to tune the settings and under volt to get below the threshold for one psu.
I haven't tried the sync function on breakout boards, but I would assume you need to set the switch to sync on both for that function to work. Its not clear to me the benefit of the reboot function as any motherboard will boot itself when the power comes back on if you set it to start on power on in the bios. Since you have two different breakout boards, I would test the sync function before hooking it up to your miner to verify that the pinouts on the boards are compatible.
July 13, 2020, 07:45:51 AM
I wasn't quite clear on one part of your description. If your GPUs have two PCIE connectors, both connectors from each GPU should be hooked to the same PSU. I believe you described it this way but I wasn't quite sure.
yes the GPUs 6/8 pin power connectors must ALWAYS be on the same psu.
July 13, 2020, 12:59:19 AM
tnx for the answers, i have these to breakout boards, one has sync connector(floppy), one hasnt because has autosync feature:
- This Breakout Board Adapter built-in Sync ON / OFF switch:
- Retains its state - Switch the button to A, if mining rig suddenly loses power, the PSU will start automatically when power is reset.
- Sync ON / OFF - Switch the button to B, the main power supply and the secondary power supply can power ON/OFF simultaneously.
so I should put brekaout board that has sync floppy connector at main PSU and other one that has auto sync at 2nd PSU? Also i dont have to connect 1st brekaout board withy sync floppy cable to anthying?
these are the brekaoutboards:
https://bitcoinmerch.com/products/1200w-750w-breakout-board-for-hp-psu-gpu-mining-ethereum-zec-zcash-eth-w-button
https://www.ebay.co.uk/itm/Breakout-Board-for-HP-Power-Supply-GPU-Mining-17x-6Pin-PCI-e-Slots-Set-of-2/202878049656?_trkparms=aid%3D1110001%26algo%3DSPLICE.SIM%26ao%3D2%26asc%3D225076%26meid%3D53618420d9924325a58f76fec7f9b2e1%26pid%3D100623%26rk%3D3%26rkt%3D6%26mehot%3Des%26sd%3D352425312134%26itm%3D202878049656%26pmt%3D1%26noa%3D1%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWeb&_trksid=p2047675.c100623.m-1
- This Breakout Board Adapter built-in Sync ON / OFF switch:
- Retains its state - Switch the button to A, if mining rig suddenly loses power, the PSU will start automatically when power is reset.
- Sync ON / OFF - Switch the button to B, the main power supply and the secondary power supply can power ON/OFF simultaneously.
so I should put brekaout board that has sync floppy connector at main PSU and other one that has auto sync at 2nd PSU? Also i dont have to connect 1st brekaout board withy sync floppy cable to anthying?
these are the brekaoutboards:
https://bitcoinmerch.com/products/1200w-750w-breakout-board-for-hp-psu-gpu-mining-ethereum-zec-zcash-eth-w-button
https://www.ebay.co.uk/itm/Breakout-Board-for-HP-Power-Supply-GPU-Mining-17x-6Pin-PCI-e-Slots-Set-of-2/202878049656?_trkparms=aid%3D1110001%26algo%3DSPLICE.SIM%26ao%3D2%26asc%3D225076%26meid%3D53618420d9924325a58f76fec7f9b2e1%26pid%3D100623%26rk%3D3%26rkt%3D6%26mehot%3Des%26sd%3D352425312134%26itm%3D202878049656%26pmt%3D1%26noa%3D1%26pg%3D2047675%26algv%3DSimplAMLv5PairwiseWeb&_trksid=p2047675.c100623.m-1
July 12, 2020, 07:12:25 PM
If you need to go with the two psus, I would power the board and the first few GPUs with one PSU and the rest of the gpus with the 2nd PSU. I have done this before and it works. If you are using psu's that can be synced like the Antec HCP, hook up the sync cord so they both turn on and off together. Alternatively, you need to make sure to turn on psu 2 then psu 1. When you shutoff, do it in the opposite order: 1 and then 2.
this is the way i have my onda d8p (a similar mobo), all mobo connections and a 2-3 gpus on one psu, and the remaining gpus 6/8 pin connectors on the 2nd.
i used a add2psu (a relay) to control both psus from the motherboard power button. makes it easier as you dont have to worry about the order of psus turning on/off. not strictly needed though.
Sounds like a good working solution. I wasn't quite clear on one part of your description. If your GPUs have two PCIE connectors, both connectors from each GPU should be hooked to the same PSU. I believe you described it this way but I wasn't quite sure.
July 12, 2020, 06:03:56 PM
If you need to go with the two psus, I would power the board and the first few GPUs with one PSU and the rest of the gpus with the 2nd PSU. I have done this before and it works. If you are using psu's that can be synced like the Antec HCP, hook up the sync cord so they both turn on and off together. Alternatively, you need to make sure to turn on psu 2 then psu 1. When you shutoff, do it in the opposite order: 1 and then 2.
this is the way i have my onda d8p (a similar mobo), all mobo connections and a 2-3 gpus on one psu, and the remaining gpus 6/8 pin connectors on the 2nd.
i used a add2psu (a relay) to control both psus from the motherboard power button. makes it easier as you dont have to worry about the order of psus turning on/off. not strictly needed though.
July 12, 2020, 02:32:22 PM
Having one bigger psu would be better for reliability purposes since there would be less chance for power abnormalities. If you need to go with the two psus, I would power the board and the first few GPUs with one PSU and the rest of the gpus with the 2nd PSU. I have done this before and it works. If you are using psu's that can be synced like the Antec HCP, hook up the sync cord so they both turn on and off together. Alternatively, you need to make sure to turn on psu 2 then psu 1. When you shutoff, do it in the opposite order: 1 and then 2.
July 12, 2020, 01:05:44 AM
Hi,
im trying to use this mbo + 8gpus with two 1200W HP server psu-s.
GPUS 1-4 are powerd with first PSU, GPUS 5-8 are powerd with second PSU.
My question is how do I connect 6pin pcie slots to power MBO?(maybe first two 6 pin from first psu, and 3, 4 and 5th 6pin mbo from second psu?)
Tnx for answer.
im trying to use this mbo + 8gpus with two 1200W HP server psu-s.
GPUS 1-4 are powerd with first PSU, GPUS 5-8 are powerd with second PSU.
My question is how do I connect 6pin pcie slots to power MBO?(maybe first two 6 pin from first psu, and 3, 4 and 5th 6pin mbo from second psu?)
Tnx for answer.
July 15, 2019, 08:13:19 PM
My board ended up not working and went ahead with a RMA last month. my order number is #19365. its been almost a month and i havent gotten a response back or anything from octominer yet. i am getting no responses from [email protected]
Is there any other ways to reach out to these guys?
Edit: All has been resolved! thank you Octominer =)
Is there any other ways to reach out to these guys?
Edit: All has been resolved! thank you Octominer =)
June 27, 2019, 12:36:06 PM
I have a rig with one of these and the cpu fan is hissing like it's about to die. Does anyone know how to replace it? Or should I just put another fan on top when it dies?
Anyone has any suggestions or experience. I just don't want to take the rig down without a plan before it is dead.
Anyone has any suggestions or experience. I just don't want to take the rig down without a plan before it is dead.
My fan also died months ago. Just unplug the Cpu fan (just in case it will never spin again) and put a 120mm fan on top. Tape it a bit, so that it cant move and damage any components. Works perfect.
June 27, 2019, 06:48:02 AM
I have a rig with one of these and the cpu fan is hissing like it's about to die. Does anyone know how to replace it? Or should I just put another fan on top when it dies?
Anyone has any suggestions or experience. I just don't want to take the rig down without a plan before it is dead.
Anyone has any suggestions or experience. I just don't want to take the rig down without a plan before it is dead.
I would try with a different fan, you could always try to find exact one on ebay or from Octominer if they can/want to sell you spare part.
He's talking CPU fan. I am not sure if there is a spare part for that. have a fan on hand before you power down. Contact them on their site and ask if thats a spare part.
June 27, 2019, 02:53:03 AM
I have a rig with one of these and the cpu fan is hissing like it's about to die. Does anyone know how to replace it? Or should I just put another fan on top when it dies?
Anyone has any suggestions or experience. I just don't want to take the rig down without a plan before it is dead.
Anyone has any suggestions or experience. I just don't want to take the rig down without a plan before it is dead.
I would try with a different fan, you could always try to find exact one on ebay or from Octominer if they can/want to sell you spare part.
June 26, 2019, 05:12:19 PM
I have a rig with one of these and the cpu fan is hissing like it's about to die. Does anyone know how to replace it? Or should I just put another fan on top when it dies?
Anyone has any suggestions or experience. I just don't want to take the rig down without a plan before it is dead.
Anyone has any suggestions or experience. I just don't want to take the rig down without a plan before it is dead.
June 11, 2019, 06:07:02 PM
bought the new 9 slot board with case and server psu. Server psu doesnt have a power switch/ doesnt turn on automatically when plugged in, any ideas?
June 03, 2019, 12:30:37 PM
This board looks very cool. I am always panicked with the risers. With this one, no need to work with risers. I wish I bought a month ago because I have to pay too much custom duty in my country now.
June 03, 2019, 10:32:36 AM
thank you! you are correct, the issue is with the USB drive. I tried another one and it worked.
June 03, 2019, 08:22:56 AM
I have a Octominer B8Plus motherboard and it works fine with the mSATA SSD, but I really need to boot off a USB thumb drive with Ubuntu on it. I can't get this to work.
It just says "Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key".
Screenshot: https://imgur.com/BMef7iL
It just says "Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key".
Screenshot: https://imgur.com/BMef7iL
The odds are you dont have it formatted correctly. I have a bunch of this case and with a proper boot usb it works 100% of the time. Just for grins use etcher and format a usb with smos on it and see if it boots.
June 03, 2019, 04:04:33 AM
I have a Octominer B8Plus motherboard and it works fine with the mSATA SSD, but I really need to boot off a USB thumb drive with Ubuntu on it. I can't get this to work.
It just says "Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key".
Screenshot: https://imgur.com/BMef7iL
It just says "Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key".
Screenshot: https://imgur.com/BMef7iL
Hello in the options for system start, you have the option to start upload from usb? As an option there may be a problem in the usb.
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