Topic: Does the H81/H61 Pro BTC Need Powered Risers? (Read 20419 times)
My 4pin amolex connected to mainboard is getting very hot( the connector by the 1x pcie) and the total power consum is increase more 200w. I had to turn off cuz it can be burn. It just happened this morning and i did nothing. I tried to change power supply. Change other board but its still happens. My other rig set up same but nothing wrong. Anyone help me
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2-3 rigs/day, only using asrock h61/h81 btc boards and ONLY 6x powered risers per rig. both molex connected on every mobo. seeing posts with too much power etc..go back to school
the reason with melted risers and broken boards:
-bad risers
-general noob mistakes, seen all and some are briliant fail.
-cross conected riser/main power from two different psus. use the same psu for riser and main gpu power on every card. dont power the riser from one psu and main gpu power from other psu. usually 3+3 cards or 4+2 cards
-main reason that all web is searching for an answer: SOME PSUS DONT ALLOW BRIDGE MODE. its a psu design, mostly cheaper psus has huge ripple when no mobo connected. just melted risers if you are lucky, more damage if you are not. wont list known psus here.
2-3 rigs/day, only using asrock h61/h81 btc boards and ONLY 6x powered risers per rig. both molex connected on every mobo. seeing posts with too much power etc..go back to school
the reason with melted risers and broken boards:
-bad risers
-general noob mistakes, seen all and some are briliant fail.
-cross conected riser/main power from two different psus. use the same psu for riser and main gpu power on every card. dont power the riser from one psu and main gpu power from other psu. usually 3+3 cards or 4+2 cards
-main reason that all web is searching for an answer: SOME PSUS DONT ALLOW BRIDGE MODE. its a psu design, mostly cheaper psus has huge ripple when no mobo connected. just melted risers if you are lucky, more damage if you are not. wont list known psus here.
Source? I've been doing this a very long time. Go out and get a multimeter and test it yourself, as I did. I've tested the current draw of every type of card I use. people are looking for a source on something absolutely simple to test.
If you want to see pcie specs, google it. Each 6 pin and 8 pin connector has a design specification, as do the motherboard components, and every electrical device. Much easier to just test it.
If you want to see pcie specs, google it. Each 6 pin and 8 pin connector has a design specification, as do the motherboard components, and every electrical device. Much easier to just test it.
hahahahahaha multimeter??!?!?!?!?! do you know why you shouldnt test psu (or anything else?) with a multimeter?
why proper reviews use laboratory equipment worth few grand?
please answer back
Ive personally measured voltages and current of my psu.Then Ive read how stupid it is.Search about it on google.
(Hope you dont have kids.)
Source? I've been doing this a very long time. Go out and get a multimeter and test it yourself, as I did. I've tested the current draw of every type of card I use. people are looking for a source on something absolutely simple to test.
If you want to see pcie specs, google it. Each 6 pin and 8 pin connector has a design specification, as do the motherboard components, and every electrical device. Much easier to just test it.
If you want to see pcie specs, google it. Each 6 pin and 8 pin connector has a design specification, as do the motherboard components, and every electrical device. Much easier to just test it.
hahahahahaha multimeter??!?!?!?!?! do you know why you shouldnt test psu (or anything else?) with a multimeter?
why proper reviews use laboratory equipment worth few grand?
please answer back
answer is yes..
Source? I've been doing this a very long time. Go out and get a multimeter and test it yourself, as I did. I've tested the current draw of every type of card I use. people are looking for a source on something absolutely simple to test.
If you want to see pcie specs, google it. Each 6 pin and 8 pin connector has a design specification, as do the motherboard components, and every electrical device. Much easier to just test it.
If you want to see pcie specs, google it. Each 6 pin and 8 pin connector has a design specification, as do the motherboard components, and every electrical device. Much easier to just test it.
hahahahahaha multimeter??!?!?!?!?! do you know why you shouldnt test psu (or anything else?) with a multimeter?
why proper reviews use laboratory equipment worth few grand?
please answer back
Source? I've been doing this a very long time. Go out and get a multimeter and test it yourself, as I did. I've tested the current draw of every type of card I use. people are looking for a source on something absolutely simple to test.
If you want to see pcie specs, google it. Each 6 pin and 8 pin connector has a design specification, as do the motherboard components, and every electrical device. Much easier to just test it.
If you want to see pcie specs, google it. Each 6 pin and 8 pin connector has a design specification, as do the motherboard components, and every electrical device. Much easier to just test it.
They actually don't. That is a MAXIMUM for the spec. Most cards I've tested draw 30-50 watts.
Good to know. How was the testing done?
what cards exactly? please post source of the |MAXIMUM SPEC|
They actually don't. That is a MAXIMUM for the spec. Most cards I've tested draw 30-50 watts.
Good to know. How was the testing done?
You should use powered riser for the 1x even though you have enough power. Because 1x only can transfer 25 watt
The way I understand it, actually 75W will be pulled through the 1x slot! That's because of the16x graphics cards usually draw 75W from the 16x slots. Since the card doesn't "know" it's attached to an 1x slot, it does not bother drawing 75W. When you take a look at the pci express pinlayout for example at wikipedia, you will notice that it's only the pins prior to the key notch, that are dealing with power. The rest is for data.
That's also why powered risers provide extra power to the PINS, not the 6+2 pin power connectors.
They actually don't. That is a MAXIMUM for the spec. Most cards I've tested draw 30-50 watts.
You should use powered riser for the 1x even though you have enough power. Because 1x only can transfer 25 watt
The way I understand it, actually 75W will be drawn through the 1x slot! That's because of the16x graphics cards usually draw 75W from the 16x slots. Since the card doesn't "know" it's attached to an 1x slot, it does not bother drawing 75W. When you take a look at the pci express pinlayout for example at wikipedia, you will notice that it's only the pins prior to the key notch, that are dealing with power. The rest is for data.
That's also why powered risers provide extra power to the PINS, not the 6+2 pin power connectors.
You should use powered riser for the 1x even though you have enough power. Because 1x only can transfer 25 watt
Powered risers are so that you don't pull too much power through your MB. If each GPU pulls 25W, a 6 GPU rig means you'll pulling 150W through a board that's not designed to have that much power running through it. Things get hot, and they fry.
The Pro BTC MB has 2 separate molex connectors for supplying extra 12V power to the MB, specifically to the PCIe lanes. It's designed so you won't have to use powered risers.
I mean, you still could if you wanted to, but it'd be kinda pointless.
The Pro BTC MB has 2 separate molex connectors for supplying extra 12V power to the MB, specifically to the PCIe lanes. It's designed so you won't have to use powered risers.
I mean, you still could if you wanted to, but it'd be kinda pointless.
Ive read on reddit thread to only use four because there are 2 molex into mobo and that
If more are used then something will melt
Posted this in another thread, used 6xr9 270 and burned out the traces at the 24 pin power connector. So I would definitely use powered risers w/ this board.
Did you plug in double molex?
Yup, sure did
Also found this post on reddit
http://www.reddit.com/r/litecoinmining/comments/1vumlx/running_6x_r9_290not_the_x_asrock_h81_pro_btc/
My opinion of this board- its a POS, gonna go w/ another board and powered risers, preferably USB powered risers
Update.....Finally got this board to work w/ out powered risers, however, the verdict is still out on whether or not this board will hold up to 24/7 ops using the molex plugs....stay tuned
Thats how I started this, put 1 card in and installed everything needed then turned off and plugged in the other 3 cards. Do you have a card in the x16 slot? I'm not going to put the card onto the board I have an x16 -> x16 riser that I can use
No, I do not have a single 16x- 16x or gpu mounted directly to a motherboard. you have some other issue.
Thats how I started this, put 1 card in and installed everything needed then turned off and plugged in the other 3 cards. Do you have a card in the x16 slot? I'm not going to put the card onto the board I have an x16 -> x16 riser that I can use
No, you don't need a card on the board. I always install the OS and drivers with just one on the board, then after it all works I shut it down and plug all cards in via usb risers. I've got no problems with any of them so far.
Has anyone had an issue with this board where after installing more than 2 GPUs the BIOS boot or the new Windows 8 splash screen won't load? With 2 GPUs everything works fine, however as soon as I add more no more BIOS boot!
Updated to the latest BIOS 1.30 but same issue. Is there a specific order of PCIe slots to install these into, currently only using the PCIe on non-powered risers.
Updated to the latest BIOS 1.30 but same issue. Is there a specific order of PCIe slots to install these into, currently only using the PCIe on non-powered risers.
Use linux
Thanks for that, I'll give BAMT a go later to see if any difference. But from what I'm seeing with this issue so far, the error happens before either Windows or Linux would load as there is no BIOS post screen. The first output from the card is when the Windows drivers loadup.
I'm wondering whether there is a need to have 1 card plugged into the x16 slot, although when I have the 2 working they are both plugged into x1 slots
Has anyone had an issue with this board where after installing more than 2 GPUs the BIOS boot or the new Windows 8 splash screen won't load? With 2 GPUs everything works fine, however as soon as I add more no more BIOS boot!
Updated to the latest BIOS 1.30 but same issue. Is there a specific order of PCIe slots to install these into, currently only using the PCIe on non-powered risers.
Updated to the latest BIOS 1.30 but same issue. Is there a specific order of PCIe slots to install these into, currently only using the PCIe on non-powered risers.
Use linux
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