Will I MELT my Asrock H110 motherboard? Electrical advice needed.

[thepixelgeek]

https://i.imgur.com/YFbxHPq.jpg

My motherboard requires 2 molex be connected for 13 gpus.

I'm using a server grade psu in conjunction with 160w pico power. The pico power has 22 awg wire which has 1 molex attached already.

My first thought was to add another molex to the pico power. However, based on @philipma1957 past experience, the pico may not be able to handle the extra (second molex) power being drawn by the board. It could melt the pico!

The current thinking is to add a molex on one of the lines coming from the server psu. But, since the server psu is 12v only, I will leave out the 5v which is usually used with a 4 pin molex.

Will this be problematic?


Thanks to @philipma1957 for helping thus far.

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[Vann]

You don't need to use the motherboard molex PCI-E supplemental power when using all powered risers. You do need to disable the power check in the Bios or you will get a warning message at Post.

[thepixelgeek]

Thanks! Where is the "power check" in the bios? What's is called?

Also, per the manual, and because it's 13 gpu's, it says these molex must be plugged in. I have to believe it's for a reason since this is a "mining" board, and ASrock is well aware of powered risers, no?

Are you using this board now?

Is the "power check" option in the bios something different? Where can I find it specifically?

You don't need to use the motherboard molex PCI-E supplemental power when using all powered risers. You do need to disable the power check in the Bios or you will get a warning message at Post.

[Vann]

I think it's in the advanced menu > Chipset configuration. Look for PCI-E power warning or something like that and set it to disabled.

[polylogic]

Thanks! Where is the "power check" in the bios? What's is called?

Also, per the manual, and because it's 13 gpu's, it says these molex must be plugged in. I have to believe it's for a reason since this is a "mining" board, and ASrock is well aware of powered risers, no?

Are you using this board now?

Is the "power check" option in the bios something different? Where can I find it specifically?

You don't need to use the motherboard molex PCI-E supplemental power when using all powered risers. You do need to disable the power check in the Bios or you will get a warning message at Post.

the reason is if you dont use powerered risers than you can connect the onoard molex and still have enough power.
if you look at the manual you can read that these molex supply extra power to pci slots

[Vann]

Thanks! Where is the "power check" in the bios? What's is called?

Also, per the manual, and because it's 13 gpu's, it says these molex must be plugged in. I have to believe it's for a reason since this is a "mining" board, and ASrock is well aware of powered risers, no?

Are you using this board now?

Is the "power check" option in the bios something different? Where can I find it specifically?

You don't need to use the motherboard molex PCI-E supplemental power when using all powered risers. You do need to disable the power check in the Bios or you will get a warning message at Post.

the reason is if you dont use powerered risers than you can connect the onoard molex and still have enough power.
if you look at the manual you can read that these molex supply extra power to pci slots

That's correct. The supplemental power ports are there so you don't burn up the PCI-E slots or motherboard when using unpowered ribbon risers. Theoretically anyways. Many people had problems using unpowered risers with the ASRock H81 Pro BTC.

https://forum.ethereum.org/discussion/7367/using-an-asrock-h81-pro-btc-board-beware

[thepixelgeek]

I've used Asrock H81 boards without molex.

However, the manual for H110 makes it sound like total meltdown if you don't use molex. Thought, maybe, since it's 13 GPUs, it might be different.

Thanks for the info!

Thanks! Where is the "power check" in the bios? What's is called?

Also, per the manual, and because it's 13 gpu's, it says these molex must be plugged in. I have to believe it's for a reason since this is a "mining" board, and ASrock is well aware of powered risers, no?

Are you using this board now?

Is the "power check" option in the bios something different? Where can I find it specifically?

You don't need to use the motherboard molex PCI-E supplemental power when using all powered risers. You do need to disable the power check in the Bios or you will get a warning message at Post.

the reason is if you dont use powerered risers than you can connect the onoard molex and still have enough power.
if you look at the manual you can read that these molex supply extra power to pci slots

[Vann]

I've used Asrock H81 boards without molex.

However, the manual for H110 makes it sound like total meltdown if you don't use molex. Thought, maybe, since it's 13 GPUs, it might be different.

Thanks for the info!

Thanks! Where is the "power check" in the bios? What's is called?

Also, per the manual, and because it's 13 gpu's, it says these molex must be plugged in. I have to believe it's for a reason since this is a "mining" board, and ASrock is well aware of powered risers, no?

Are you using this board now?

Is the "power check" option in the bios something different? Where can I find it specifically?

You don't need to use the motherboard molex PCI-E supplemental power when using all powered risers. You do need to disable the power check in the Bios or you will get a warning message at Post.

the reason is if you dont use powerered risers than you can connect the onoard molex and still have enough power.
if you look at the manual you can read that these molex supply extra power to pci slots

I think they have the warning because the riser kits ASRock sells provide +12V power through a cable connected to the PCI-E slots. In that case, you definitely need to use the PCI-E supplemental power connectors on the motherboard.

http://www.asrock.com/mb/spec/card.asp?Model=BTC+PRO+Kit

USB powered risers supply +12V power directly from the PSU and there is only a small +3.3V current coming from the PCI-E slot through the USB cable to the riser. That's why ASRock lets you disable the warning, though they should make more clear when you need to use the PCI-E supplemental power connectors.

[thepixelgeek]

Vann, thanks! This is good news, and it saves me the hassle of custom cable work!

I've used Asrock H81 boards without molex.

However, the manual for H110 makes it sound like total meltdown if you don't use molex. Thought, maybe, since it's 13 GPUs, it might be different.

Thanks for the info!

Thanks! Where is the "power check" in the bios? What's is called?

Also, per the manual, and because it's 13 gpu's, it says these molex must be plugged in. I have to believe it's for a reason since this is a "mining" board, and ASrock is well aware of powered risers, no?

Are you using this board now?

Is the "power check" option in the bios something different? Where can I find it specifically?

You don't need to use the motherboard molex PCI-E supplemental power when using all powered risers. You do need to disable the power check in the Bios or you will get a warning message at Post.

the reason is if you dont use powerered risers than you can connect the onoard molex and still have enough power.
if you look at the manual you can read that these molex supply extra power to pci slots

I think they have the warning because the riser kits ASRock sells provide +12V power through a cable connected to the PCI-E slots. In that case, you definitely need to use the PCI-E supplemental power connectors on the motherboard.

http://www.asrock.com/mb/spec/card.asp?Model=BTC+PRO+Kit

USB powered risers supply +12V power directly from the PSU and there is only a small +3.3V current coming from the PCI-E slot through the USB cable to the riser. That's why ASRock lets you disable the warning, though they should make more clear when you need to use the PCI-E supplemental power connectors.

[polylogic]

I've used Asrock H81 boards without molex.

However, the manual for H110 makes it sound like total meltdown if you don't use molex. Thought, maybe, since it's 13 GPUs, it might be different.

Thanks for the info!

Thanks! Where is the "power check" in the bios? What's is called?

Also, per the manual, and because it's 13 gpu's, it says these molex must be plugged in. I have to believe it's for a reason since this is a "mining" board, and ASrock is well aware of powered risers, no?

Are you using this board now?

Is the "power check" option in the bios something different? Where can I find it specifically?

You don't need to use the motherboard molex PCI-E supplemental power when using all powered risers. You do need to disable the power check in the Bios or you will get a warning message at Post.

the reason is if you dont use powerered risers than you can connect the onoard molex and still have enough power.
if you look at the manual you can read that these molex supply extra power to pci slots

I think they have the warning because the riser kits ASRock sells provide +12V power through a cable connected to the PCI-E slots. In that case, you definitely need to use the PCI-E supplemental power connectors on the motherboard.

http://www.asrock.com/mb/spec/card.asp?Model=BTC+PRO+Kit

USB powered risers supply +12V power directly from the PSU and there is only a small +3.3V current coming from the PCI-E slot through the USB cable to the riser. That's why ASRock lets you disable the warning, though they should make more clear when you need to use the PCI-E supplemental power connectors.

nice riser kit, i like
and yeah, those would need the molex connected

[Vann]

I've used Asrock H81 boards without molex.

However, the manual for H110 makes it sound like total meltdown if you don't use molex. Thought, maybe, since it's 13 GPUs, it might be different.

Thanks for the info!

Thanks! Where is the "power check" in the bios? What's is called?

Also, per the manual, and because it's 13 gpu's, it says these molex must be plugged in. I have to believe it's for a reason since this is a "mining" board, and ASrock is well aware of powered risers, no?

Are you using this board now?

Is the "power check" option in the bios something different? Where can I find it specifically?

You don't need to use the motherboard molex PCI-E supplemental power when using all powered risers. You do need to disable the power check in the Bios or you will get a warning message at Post.

the reason is if you dont use powerered risers than you can connect the onoard molex and still have enough power.
if you look at the manual you can read that these molex supply extra power to pci slots

I think they have the warning because the riser kits ASRock sells provide +12V power through a cable connected to the PCI-E slots. In that case, you definitely need to use the PCI-E supplemental power connectors on the motherboard.

http://www.asrock.com/mb/spec/card.asp?Model=BTC+PRO+Kit

USB powered risers supply +12V power directly from the PSU and there is only a small +3.3V current coming from the PCI-E slot through the USB cable to the riser. That's why ASRock lets you disable the warning, though they should make more clear when you need to use the PCI-E supplemental power connectors.

nice riser kit, i like
and yeah, those would need the molex connected

The ASRock riser kit came out when ribbon risers were popular. I'm not sure the ASRock kit is better than using USB risers. The USB 6-pin risers have four capacitors for a stable current flow and a voltage regulator to prevent spikes, which the ASRock risers don't have. It's also questionable if providing power from the PCI-E slots for 13 cards through the motherboard is a good idea. The ASRock riser kit is expensive at $30 each too.

[thepixelgeek]

I'm using USB 3.0 PCI-E 1x to 16x Powered Extender Riser. Version 006C. And they are 6pin powered. Edit: I don't use the crappy sata converter.
https://i.imgur.com/V8FDXRl.png

I've used Asrock H81 boards without molex.

However, the manual for H110 makes it sound like total meltdown if you don't use molex. Thought, maybe, since it's 13 GPUs, it might be different.

Thanks for the info!

Thanks! Where is the "power check" in the bios? What's is called?

Also, per the manual, and because it's 13 gpu's, it says these molex must be plugged in. I have to believe it's for a reason since this is a "mining" board, and ASrock is well aware of powered risers, no?

Are you using this board now?

Is the "power check" option in the bios something different? Where can I find it specifically?

You don't need to use the motherboard molex PCI-E supplemental power when using all powered risers. You do need to disable the power check in the Bios or you will get a warning message at Post.

the reason is if you dont use powerered risers than you can connect the onoard molex and still have enough power.
if you look at the manual you can read that these molex supply extra power to pci slots

I think they have the warning because the riser kits ASRock sells provide +12V power through a cable connected to the PCI-E slots. In that case, you definitely need to use the PCI-E supplemental power connectors on the motherboard.

http://www.asrock.com/mb/spec/card.asp?Model=BTC+PRO+Kit

USB powered risers supply +12V power directly from the PSU and there is only a small +3.3V current coming from the PCI-E slot through the USB cable to the riser. That's why ASRock lets you disable the warning, though they should make more clear when you need to use the PCI-E supplemental power connectors.

nice riser kit, i like
and yeah, those would need the molex connected

The ASRock riser kit came out when ribbon risers were popular. I'm not sure the ASRock kit is better than using USB risers. The USB 6-pin risers have four capacitors for a stable current flow and a voltage regulator to prevent spikes, which the ASRock risers don't have. It's also questionable if providing power from the PCI-E slots for 13 cards through the motherboard is a good idea. The ASRock riser kit is expensive at $30 each too.

[thepixelgeek]

What does that mean?

my rig molex connected ploblem :S ??

[polylogic]

The ASRock riser kit came out when ribbon risers were popular. I'm not sure the ASRock kit is better than using USB risers. The USB 6-pin risers have four capacitors for a stable current flow and a voltage regulator to prevent spikes, which the ASRock risers don't have. It's also questionable if providing power from the PCI-E slots for 13 cards through the motherboard is a good idea. The ASRock riser kit is expensive at $30 each too.

oh i see, i thought they were new for the 13 pci slot boards.. this old overpriced hardware is not very good indeed.
them usb raisers are very good.. not much problems with them if you take care of them

[QuintLeo]

I'm using USB 3.0 PCI-E 1x to 16x Powered Extender Riser. Version 006C. And they are 6pin powered. Edit: I don't use the crappy sata converter.

 VERY good call.

 The original ASRock "BTC mining" motherboard design predates widespread use of powered risers - the current R2.0 version does not, but seems to have stuck with the molex on the motherboard design for backwards compatability, then they carried it into their 13-slot version.

 ASUS does the same thing on their 19-slot B250 BTC Pro design - but the board works fine without the molex if you use all powered risers.

[thepixelgeek]

Thanks! I'll be hooking up the H110 soon.

I'm using USB 3.0 PCI-E 1x to 16x Powered Extender Riser. Version 006C. And they are 6pin powered. Edit: I don't use the crappy sata converter.

 VERY good call.

 The original ASRock "BTC mining" motherboard design predates widespread use of powered risers - the current R2.0 version does not, but seems to have stuck with the molex on the motherboard design for backwards compatability, then they carried it into their 13-slot version.

 ASUS does the same thing on their 19-slot B250 BTC Pro design - but the board works fine without the molex if you use all powered risers.

[smaxz]

I suggest you use molex connections.

I agree with powered risers you should not have to.

[smaxz]

how did this work out for you?

[fanatic26]

The extra power connectors are there for a reason. Its pure laziness not to plug power into them.

Also, you do not need the 5v for those connectors. I run a PCI-E to 3 molex cable to power my H110s directly off of a server PSU along with a 160w PICO

[tflux99]

for me its not working if i unplug the molex with 13 gpus connected all powered risers the board will not boot it stucks at postscreen before the extended power message...