Motherboard designed for mining, and better riser cables in this thread. - page 7.

JLM

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Quote from: outsider on December 18, 2013, 08:25:59 AM

Sintech has a newer pcie riser on ebay.
http://www.ebay.com/itm/PCI-e-express-1X-16x-Riser-Extender-Card-molex-power-50CMS-USB-3-0-Cable-/221337922681?pt=LH_DefaultDomain_0&hash=item3388c4ac79
The molex connector is on the board now and it seems to have a few more components on it.

They also have another intersting product. A PCIe port multiplier
http://www.ebay.com/itm/PCI-e-express-1X-4port-1X-16X-multiplier-riser-card-cable-4-diy-bitcoin-miner-/221339052444?pt=LH_DefaultDomain_0&hash=item3388d5e99c
Why could they not have placed those PCIe connectors a little farther apart!

Somebody used that device with an Raspberry Pi and some GPU´s?

takagari

legendary

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Quote from: sadycz on December 18, 2013, 10:52:18 AM

is this even worth it anylonger?

Because we dipped back to double what it was worth last month? lol. Unsure why anyone though coins would stay at $1400..

It will climb back up fyi..

sadycz

newbie

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is this even worth it anylonger?

takagari

legendary

Activity: 1050

Merit: 1000

Ugh would a port multiplier even work? I wouldn't think so?

However these would be nice for running a data server for storage

outsider

newbie

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Sintech has a newer pcie riser on ebay.
http://www.ebay.com/itm/PCI-e-express-1X-16x-Riser-Extender-Card-molex-power-50CMS-USB-3-0-Cable-/221337922681?pt=LH_DefaultDomain_0&hash=item3388c4ac79
The molex connector is on the board now and it seems to have a few more components on it.
http://i.ebayimg.com/t/PCI-e-express-1X-to-16x-Riser-Extender-Card-with-molex-power-50CMS-USB-3-0-Cable-/00/s/NDUwWDYwMA==/z/pPcAAOxyNo9SrrmX/$_3.JPG

They also have another intersting product. A PCIe port multiplier
http://www.ebay.com/itm/PCI-e-express-1X-4port-1X-16X-multiplier-riser-card-cable-4-diy-bitcoin-miner-/221339052444?pt=LH_DefaultDomain_0&hash=item3388d5e99c
Why could they not have placed those PCIe connectors a little farther apart!
http://i.ebayimg.com/t/PCI-e-express-1X-to-4port-1X-16X-multiplier-riser-card-cable-4-diy-bitcoin-miner-/00/s/NDUwWDYwMA==/z/8y8AAMXQUmFSgf8B/$_3.JPG

micax1

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Quote from: pontiacg5 on December 16, 2013, 12:20:57 AM

Hey! awesome design! where to find this frame

?

AndrewWilliams

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Fourth richest fictional character

ssateneth, +1 for your very informative thread. You saved me a few days of headaches (esp. since so many places are out of risers!).

I am going for the "Athena Power YPCIE628 6" 6-pin PCI-E "Y" to Two PCI-E (6+2) Cable" for my MSI Z87-G45 Gaming and Intel G3220 CPU and the two R9 270x GPUs I have, and the R9 280x's I will have in hand shortly.

pontiacg5

sr. member

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Quote from: ssateneth on December 17, 2013, 06:04:35 AM

Spec this, spec that. Did you know that there are -exactly- the same amount of 12v pins in a 1x and a 16x slot? They can both handle the same amount of power. There is no limit that the motherboard can enforce anyways as far as power consumption goes form the PCI-E slot. The graphics card will pull whatever it wants from the PCI-E slot, regardless of 16x or 1x.

Yes, that is true but there sure are a lot more grounds on a x16 link than a x1. Sorta the same as a 6 pin and 8 pin pci-e plug. They both have the same strand count on 12V lines, yet one is rated higher due to extra grounding alone.

And the motherboard not being able to regulate itself is what we are fighting against, according to PCI-e spec the cards are supposed to play nice and to spec. If the mobo was smart, it would sense an over current condition on the pci-e bus and shut off when overload it instead of just burning out the 24pin header. Mining is not a typical usage scenario though, not by a long shot, so there's no real reason for there to be costly protection when it's so easy to limit the add-on cards.

Would it work, you bet! I really wouldn't want to do it that ways though, not with my hardware.

USB risers will get cheaper again, either if you are buying them from me or I force the chinese guy into stopping the ridiculous price gouging. If that doesn't work, wait till litecoin/scrypt settles down Grin

takagari

legendary

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I really want those usb risers. I hope they get cheaper.

I plan to build three rigs with 6 pcie and only use four cards each. Expand quickly once I know I'm stable.

ssateneth

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Spec this, spec that. Did you know that there are -exactly- the same amount of 12v pins in a 1x and a 16x slot? They can both handle the same amount of power. There is no limit that the motherboard can enforce anyways as far as power consumption goes form the PCI-E slot. The graphics card will pull whatever it wants from the PCI-E slot, regardless of 16x or 1x.

pontiacg5

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Quote from: 1632008 on December 16, 2013, 05:12:25 AM

Quote from: pontiacg5 on December 16, 2013, 12:20:57 AM

Apparently the PCI-e bus is rated for up to 75W on the x16 bus, but the 1x link is rated for 25W.

I'm afraid that this point is unreliable.
I know this is documented in the pcie standard, but some gpu cards seemed to not obey the standard at all and would like to pull much more than 25W from pcie slots even if they are connected through 1x extenders.

Well obviously! Being a full sized graphics card is it allowed a full 75W of draw from the PCI-e bus. I would rather pull a full 75W of 12V through a 1x powered riser cable than my 1x pcie motherboard slots though, any day of the week. I can replace those if they burn out, and the mobo would be fine.

Regardless, I don't see how what you said makes any of what I said less valid. Using the EVGA thing to run more than 25W through PCIe x1 is over pcie spec. Will it burn up? Maybe, maybe not.

1632008

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Quote from: pontiacg5 on December 16, 2013, 12:20:57 AM

Apparently the PCI-e bus is rated for up to 75W on the x16 bus, but the 1x link is rated for 25W.

I'm afraid that this point is unreliable.
I know this is documented in the pcie standard, but some gpu cards seemed to not obey the standard at all and would like to pull much more than 25W from pcie slots even if they are connected through 1x extenders.

pontiacg5

sr. member

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Ohh, I don't know. I'm not sure they would have designed it with that in mind. Apparently the PCI-e bus is rated for up to 75W on the x16 bus, but the 1x link is rated for 25W.

Since it's only one plug, it should only in theory be able to supply another 25W. Certainly not enough for 6 non powered risers. Maybe it could provide a full 75W, or three risers worth, but it is missing 15 lanes of grounds.

I wouldn't advise it, not for 6. Maybe two or three at the most.

kknd

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I can use the 6 x R9 280X without power in riser cables but 1 EVGA power bost in the MB Huh

tks : )

note235

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Quote from: pontiacg5 on December 09, 2013, 07:32:52 PM

I can comment on the USB 3.0 riser cables. They are much better than the old ribbon cables, plus allow you so much more creativity with mounting cards.

It even looks like they have pci-e presence shorts built onto the boards, though I haven't had to mess with them or pci-e presence pins on msi z77-gd65 and z77-gd45 mobo builds.

Thanks for the thread on the latter mobo, btw Grin

damn is a nice rig
whered you get the frames?

nvandertill

newbie

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I've also just ordered a board that supplies supplemental power to the PCI-E lanes using a SATA port on the side of it. Since I am maxing it out with 6 GPUs (R9 290s), I am still going to use powered risers on at least 5, if not all, of the cards rather than risk damage. Not sure how well it will work for mining, but I got high hopes!

http://www.newegg.com/Product/Product.aspx?Item=N82E16813128617

Thats a nice setup you got above there! Those USB adapters are pricey though.

pontiacg5

sr. member

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I'd also like to add, I'm trying to copy these usb 3.0 cables because I think it would be cheaper to make them here at this point. It's a really simple board, and I've already priced most of the components. I need help with the board design though, I can't use eagle, pad2pad, whatever else. Have the capital to order enough pieces to make it cost effective...

So, if you are looking to make .5 BTC and think you could copy a basic riser cable routed through a USB 3.0 plug instead of ribbons, and think you could do so off of high res DSLR pics PM me!

pontiacg5

sr. member

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Regular ribbon riser cables? All over ebay, alibaba, tradekey, and even amazon w/prime available for some of em. The get cheaper the closer to china they come from.

The USB 3.0 riser cables are $30.00 now, and I'm sure the seller is just going to keep jacking the price up. Those can't be had for less now, in fact they can't even be had because I'm all but certain the sintech.com (only guy who makes usb 3.0 riser cables) isn't shipping out older cheaper orders, but claiming they are sold out so he can then sell the inventory he currently has for more.

superduh

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the asrock motherboards will be available in US on newegg in about a week

ssateneth

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Little bump to keep it in view.

Topic: Motherboard designed for mining, and better riser cables in this thread. - page 7. (Read 63328 times)