So here is my little beast. I am still waiting for my last 2 GPUs to arrive, I will post an update when I get the last 2 480s too Currently it is mining at 99 MH/s and it uses ~720W at the wall
What type of risers are you using? It seems like your power supply has molex to molex for the risers. Those I assume are the "safe" type for mining with 480's.
I know that. I'm using 16 to 1, but it looks like he has molex to molex, and I was hoping that he would link me the site where he bought them from . I want to mine with 480s, but the molex/sata issue is deterring me.
@WoolingJumper PRO TIP FOR EVERYONE: If you are using more than 1 PSU, MAKE SURE THE MOTHERBOARD, CPU, MOTHERBOARD MOLEX (if applicable) AND ALL POWERED RISERS ARE CONNECTED TO THE SAME PSU!!! or else you will have power backfeed, and itll blow up both of your power supplies. I was stupid, and accidentally blew up a 1000w and a 1300w PSU. oops
Not that I don't want to take your word for it, but do you have an article or measurements proving such? How long did it take to blow?
I'm just worried honestly.
I have my Mobo, CPU, Molex on Mobo, and 2 cards w/ risers powered by 1 PSU. The 2nd PSU is powering the other 2 cards and their risers.
Been this way for 4+ days now...Is there a way to detect this feedback?
@WoolingJumper sorry for the late reply. I have 6 R9 390s in a single rig on a H81 Pro BTC. I have 2 chains (molex) with 3 each, enough for the USB powered risers im using. If youre using all powered risers, or if you only have 1 card on the motherboard not using powered risers, you dont need to plug any molex connectors to the motherboard, as the 24 Pin ATX connector from the PSU can take care of that power. I use EVGA power supplies, so I get plenty of molex chains.
The manual says more than 3 cards require/recommend plugging in these molex ports on the mobo.
Please connect these connectors to the power supply when three graphics cards are installed on this motherboard.
My mobo, the H97 Ann edition, wouldn't even boot using all powered risers when trying to get the 3rd card going. It says the same in its manual.
Granted the powered risers should take care of the excess power. But if you're having issues like I did with my board (though a different model) make sure you have them plugged in.
one rig asrock pro-g second asrock h61 btc pro same setup 6x280x and third h97 aniversary 6x390x nitro with 2x rm1000i...this mobo on pictures is asrock pro-g red one
Ah okay, so I'm just incredibly lucky that I got the powered riser that has no power connection to the mobo.
Maybe we as a community should generate a list of risers to avoid/buy or at least recommend.
I went ahead and switched all my risers to be powered by the same PSU as the mobo last night because I rather be safe than sorry. In turn, I had to use a sata-molex adapter to do so, which I know you're a big fan of lol. At least the 390s don't pull the high wattage as the 470/480s do... riight?
@SWDude26 Yup I tried unplugging the molex to the motherboard and it wont even give a display.
@wirelessnet2 I ended up having 2 molex strings with 2 risers each and 1 sata string each for the remaining two. Running much cooler than having 3 risers at 1 molex string.
So here is my little beast. I am still waiting for my last 2 GPUs to arrive, I will post an update when I get the last 2 480s too Currently it is mining at 99 MH/s and it uses ~720W at the wall
What type of risers are you using? It seems like your power supply has molex to molex for the risers. Those I assume are the "safe" type for mining with 480's.
Caution! This type of powered risers can potentially cause shorts! I also have some of these but I remove the 12V lines from the ribbon before use. It is only important if you use multiple PSUs and you wanna power the risers from secondary PSU.
Agreed with @Zorg33 - if you're going to use those ribbon risers, make sure you cut the power lines on the ribbon cable. Proper power isolating USB risers are always the best option (and avoid the Berg/floppy connector ones).
Caution! This type of powered risers can potentially cause shorts! I also have some of these but I remove the 12V lines from the ribbon before use. It is only important if you use multiple PSUs and you wanna power the risers from secondary PSU.
This might explain my issues I had at the beginning...
a piece of my porn ex-gaming pc in a shoe-shelf corei5 4690, gigabyte z87-ud3h, 16GB RAM, 5xRX480 (2 x16-x16 and 3 x16-x1 risers), Aerocool 1100W gives me 155MH/s ETH, 1700MH/s SIA
and yes, i know about that plastic packet under mb
@work Thanks! After looking at dozens of rigs on here, reddit, google, and other forums I was looking for a design that allowed all the cards to draw in fresh air instead of cards drawing in heat from other cards.
So I made a drawing at work of how I was going to have them stack as you can see. I can support another 2 more cards relativity easy and another PSU to power them.
As for the exhaust... The exhaust is from the top of the cards mostly and I should have taken an above shot to show the 2-4" gaps at each level between the wood planks. This allows the air to travel up, naturally cause it's hot lol.
If I was to make a 2nd one I would have made it 13" inches wide instead of 12". And maybe I'd add fans at the bottom to help blow the hot air up and out.
Comments
I'm just worried honestly.
I have my Mobo, CPU, Molex on Mobo, and 2 cards w/ risers powered by 1 PSU.
The 2nd PSU is powering the other 2 cards and their risers.
Been this way for 4+ days now...Is there a way to detect this feedback?
page 29/79 http://asrock.pc.cdn.bitgravity.com/Manual/H81 Pro BTC.pdf
Please connect these
connectors to the
power supply when
three graphics cards
are installed on this
motherboard.
My mobo, the H97 Ann edition, wouldn't even boot using all powered risers when trying to get the 3rd card going. It says the same in its manual.
Granted the powered risers should take care of the excess power. But if you're having issues like I did with my board (though a different model) make sure you have them plugged in.
Ah okay, so I'm just incredibly lucky that I got the powered riser that has no power connection to the mobo.
Maybe we as a community should generate a list of risers to avoid/buy or at least recommend.
I went ahead and switched all my risers to be powered by the same PSU as the mobo last night because I rather be safe than sorry. In turn, I had to use a sata-molex adapter to do so, which I know you're a big fan of lol. At least the 390s don't pull the high wattage as the 470/480s do... riight?
@wirelessnet2 I ended up having 2 molex strings with 2 risers each and 1 sata string each for the remaining two. Running much cooler than having 3 risers at 1 molex string.
Yeeaaap...
http://gpushack.com/collections/gpushack/products/1x-pci-e-to-16x-pci-e-powered-ribbon
http://www.ebay.co.uk/itm/PCI-Express-x1-to-PCIe-x16-Riser-Card-Flexible-Cable-1x-16x-for-Bitcoin-Mining-/142083344768?hash=item2114d3c980:g:EawAAOSw0UdXrbo8
This type of powered risers can potentially cause shorts!
I also have some of these but I remove the 12V lines from the ribbon before use.
It is only important if you use multiple PSUs and you wanna power the risers from secondary PSU.
@work you mean reisers like this?
http://www.ebay.co.uk/itm/PCI-E-Express-1x-To-16x-Extender-Riser-Board-Card-USB-3-0-SATA-Power-Cable-UK-/291817561279?hash=item43f1ae9cbf:g:kXAAAOSwYSlXhgds
Could you provide some links with the ones you use?
6x XFX R9 290X: 190MH/s 1685W
6x MSI R9 280X 110MH/s 1250W
ex-gaming pc in a shoe-shelf
corei5 4690, gigabyte z87-ud3h, 16GB RAM, 5xRX480 (2 x16-x16 and 3 x16-x1 risers), Aerocool 1100W gives me 155MH/s ETH, 1700MH/s SIA
and yes, i know about that plastic packet under mb
@muzzy124 those RX480 are on custom BIOS? which one r u using? how much WATT from the wall?
wattage - don't know, got free electricity
So I made a drawing at work of how I was going to have them stack as you can see. I can support another 2 more cards relativity easy and another PSU to power them.
As for the exhaust... The exhaust is from the top of the cards mostly and I should have taken an above shot to show the 2-4" gaps at each level between the wood planks. This allows the air to travel up, naturally cause it's hot lol.
If I was to make a 2nd one I would have made it 13" inches wide instead of 12". And maybe I'd add fans at the bottom to help blow the hot air up and out.
I can feel the air coming up out of the 2 offset center slots pretty well.