Pcie 1 to 3 Port 1X Switch Multiplier HUB Riser. Which motherboard works. - page 5.

bittawm

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Quote from: jstefanop on February 19, 2017, 01:51:43 PM

I should have a pretty interesting announcement on this front in the next few weeks ...if I were you guys don't buy anymore of these cheap switches (they suck and are not even designed properly), or even GPU risers. I will have something that will change the way we GPU mine

spill the beans

Prelude

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Quote from: jstefanop on February 19, 2017, 01:51:43 PM

I should have a pretty interesting announcement on this front in the next few weeks ...if I were you guys don't buy anymore of these cheap switches (they suck and are not even designed properly), or even GPU risers. I will have something that will change the way we GPU mine

Awesome. Can you share any more details?

jstefanop

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I should have a pretty interesting announcement on this front in the next few weeks ...if I were you guys don't buy anymore of these cheap switches (they suck and are not even designed properly), or even GPU risers. I will have something that will change the way we GPU mine

Prelude

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Quote from: Etherion on February 19, 2017, 12:37:45 PM

Well I have a Asrock H97 Anniversary with 3 Hd7990 and 3 390x. It boots fine and all 9 shows up under window 10. One of die hd7990 gpus are buggy so I disabled it. Although I have not tried the pcie switch I am more convinced that it would work on the asrock h97 anniversary. No modifications or windows registry hack required.

Plenty of reports of 3GB 7950/7970 cards working, the issue is 4GB + cards. Your setup would be 30GB of VRAM reported to the motherboard's BIOS. 8x 4GB cards would be 32GB.

Than again, I'm running rigs with 7x 8GB GPUs without issue, so 56GB reported. So that's probably not the actual problem.

I've also tried running 2x 390 Devil 13 + 4x 290 for a total of 8 GPUs which also didn't work. Tried with both W10 Pro and W10 Enterprise.

Etherion

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Well I have a Asrock H97 Anniversary with 3 Hd7990 and 3 390x. It boots fine and all 9 shows up under window 10. One of die hd7990 gpus are buggy so I disabled it. Although I have not tried the pcie switch I am more convinced that it would work on the asrock h97 anniversary. No modifications or windows registry hack required.

sony87

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Quote from: Prelude on February 19, 2017, 12:32:03 PM

Quote from: sony87 on February 19, 2017, 12:22:11 PM

Quote from: Prelude on February 19, 2017, 11:53:58 AM

People don't want to reveal the secret to getting more than 7 gpus working. It gives them an edge that they don't want to share. I remember reading that the motherboard's bios needs to be modded for 8+ to work.

For what it's worth, I had a go at 8 and 9 gpus on an MSI Z87. Board would boot woth 8 but only detect 7. With 9, the board just wouldn't boot.

i think win10 works with 8gpu without any mods - just rumor, need to confirm.

I think it would work with 8, but the issue is getting the motherboard to work with 8.

the custom board of pandaminer support them, however it's quite expensive (260$) and need mobile GPUs..

Prelude

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Quote from: sony87 on February 19, 2017, 12:22:11 PM

Quote from: Prelude on February 19, 2017, 11:53:58 AM

People don't want to reveal the secret to getting more than 7 gpus working. It gives them an edge that they don't want to share. I remember reading that the motherboard's bios needs to be modded for 8+ to work.

For what it's worth, I had a go at 8 and 9 gpus on an MSI Z87. Board would boot woth 8 but only detect 7. With 9, the board just wouldn't boot.

i think win10 works with 8gpu without any mods - just rumor, need to confirm.

I think it would work with 8, but the issue is getting the motherboard to work with 8.

sony87

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Quote from: Prelude on February 19, 2017, 11:53:58 AM

People don't want to reveal the secret to getting more than 7 gpus working. It gives them an edge that they don't want to share. I remember reading that the motherboard's bios needs to be modded for 8+ to work.

For what it's worth, I had a go at 8 and 9 gpus on an MSI Z87. Board would boot woth 8 but only detect 7. With 9, the board just wouldn't boot.

i think win10 works with 8gpu without any mods - just rumor, need to confirm.

felixbrucker

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i believe (some) server boards should work fine as they are getting used for cuda compute cards (there are models with 8 and 10 gpus iirc), it might also be a specific mobo with updated bios for this case, who knows

batko

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Not working on H81 BTC pro with 3in 1HUb

7 gpu max, with 8 black screen not boot Sad

Prelude

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People don't want to reveal the secret to getting more than 7 gpus working. It gives them an edge that they don't want to share. I remember reading that the motherboard's bios needs to be modded for 8+ to work.

For what it's worth, I had a go at 8 and 9 gpus on an MSI Z87. Board would boot woth 8 but only detect 7. With 9, the board just wouldn't boot.

sony87

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I'm also interested if this works with H81 PRO BTC board because I have such but missing the multiplier.

felixbrucker

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are there boards known to work with 8 cards or more?
i expect mostly server boards, no?

cptfisher

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it is not about the multiplier . it is about how many resources the motherboard can allocate for i/o from external cards.

Etherion

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So I thought I try and reduce my rig system/gpu cost by going for a 8 GPU rig.

I got one of the pcie 1 to 3 pcie switches.

Sadly I picked the wrong motherboard. Msi Z97 guard pro does not boot past the bios splash screen when i connect the 8th GPU. 7 is fine.

Please post your setup if you had success of failure.

Topic: Pcie 1 to 3 Port 1X Switch Multiplier HUB Riser. Which motherboard works. - page 5. (Read 9704 times)