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monstrs (OP)
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November 13, 2012, 01:54:38 PM |
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Hello.
I have mining rig with 4 5870's. 5 months ago the TAGAN 950W PSU has burned. Till then i have mined with 3 cards on that setup.
Then i putted corsair AX850 PSU + noname 550W PSU together to feed up that mining rig. It worked just fine 5 months.
Yesterday i checked the Watts on both of the PSU results:
Watss total from the wall: ~ 980
Watts taking from wall AX850 ~ 960, (It has worked all this time with this wattage)
Watts taking from wall noname 550W = 5W (MAX)
So question is, what am i doing wrong? Why the Corsair PSU is taking all load to himself? Please help, i have tryed differnet variations, when i connect it like it should, one of the cards is not displayed.
Thank you for any usefull advices.
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abracadabra
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November 13, 2012, 02:07:15 PM |
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Hello.
I have mining rig with 4 5870's. 5 months ago the TAGAN 950W PSU has burned. Till then i have mined with 3 cards on that setup.
Then i putted corsair AX850 PSU + noname 550W PSU together to feed up that mining rig. It worked just fine 5 months.
Yesterday i checked the Watts on both of the PSU results:
Watss total from the wall: ~ 980
Watts taking from wall AX850 ~ 960, (It has worked all this time with this wattage)
Watts taking from wall noname 550W = 5W (MAX)
So question is, what am i doing wrong? Why the Corsair PSU is taking all load to himself? Please help, i have tryed differnet variations, when i connect it like it should, one of the cards is not displayed.
Thank you for any usefull advices.
What is the noname 550W connected to? 1 card? 2 cards? How are you getting that PSU to power on? maybe a pic of the setup would help. |
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MrTeal
Legendary
 Offline
Activity: 1274
Merit: 1004
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November 13, 2012, 02:20:16 PM |
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Hello.
I have mining rig with 4 5870's. 5 months ago the TAGAN 950W PSU has burned. Till then i have mined with 3 cards on that setup.
Then i putted corsair AX850 PSU + noname 550W PSU together to feed up that mining rig. It worked just fine 5 months.
Yesterday i checked the Watts on both of the PSU results:
Watss total from the wall: ~ 980
Watts taking from wall AX850 ~ 960, (It has worked all this time with this wattage)
Watts taking from wall noname 550W = 5W (MAX)
So question is, what am i doing wrong? Why the Corsair PSU is taking all load to himself? Please help, i have tryed differnet variations, when i connect it like it should, one of the cards is not displayed.
Thank you for any usefull advices.
Explain your setup a bit more. Which PSU is powering the motherboard, and which cards are running from which PSU? Also, how are you turning on the PSU that isn't connected to the motherboard? |
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monstrs (OP)
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November 13, 2012, 02:23:18 PM |
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To noname PSU is connected 1 card compleatly, and 1 card partly.
Each PSU has his own power cord. About how the atx cord is shortened, will post later.
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Cablez
Legendary
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Activity: 1400
Merit: 1000
I owe my soul to the Bitcoin code...
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November 13, 2012, 11:22:14 PM |
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Tired of substandard power distribution in your ASIC setup??? Chris' Custom Cablez will get you sorted out right! No job too hard so PM me for a quote
Check my products or ask a question here: https://bitcointalk.org/index.php?topic=74397.0
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monstrs (OP)
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November 14, 2012, 05:37:05 AM |
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The second PSU is connected like this : http://www.youtube.com/watch?v=u0OKmIuNtmIBut PC is not using second psu at all, no matter how many cards is connected. If i am using only noname 550W psu, i can run 2 cards on it, no problem, but when connected like second psu, it takes 5W from the wall. The corsair PSU is taking all the load and is hot like hell, but doing the job. |
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abracadabra
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November 14, 2012, 01:40:50 PM |
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The second PSU is connected like this : http://www.youtube.com/watch?v=u0OKmIuNtmIBut PC is not using second psu at all, no matter how many cards is connected. If i am using only noname 550W psu, i can run 2 cards on it, no problem, but when connected like second psu, it takes 5W from the wall. The corsair PSU is taking all the load and is hot like hell, but doing the job. picture of rig wth closeup of psu connections please. sounds like your 2nd psu isn't conencted to anything. |
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monstrs (OP)
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November 14, 2012, 02:23:40 PM |
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Cant make a picture now.
Any example, how it should work?
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MrTeal
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Activity: 1274
Merit: 1004
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November 14, 2012, 02:59:49 PM |
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Cant make a picture now.
Any example, how it should work?
I don't suppose you own a multimeter, do you? Also, I don't think you answered Cablez's question. Why you turn on the system, do the fans on both PSUs spin up? |
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bcpokey
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November 14, 2012, 04:20:24 PM |
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Define "connected"
Most modern day GPUs require PCI-E power connectors, if those are coming from the 2nd PSU, then it will draw from that PSU, if not, it won't. Not rocket science.
If you're trying to jury rig some crazy contraption of daisy-chained molex converters between both PSUs, that's not gonna cut it. The only cross connection you really want is the on/off jumper. Otherwise just plug things in directly and you're fine. I do not recommend mixing connectors between the two PSUs, though it's not necessarily a hard and fast rule that I know of.
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monstrs (OP)
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November 15, 2012, 01:31:48 PM |
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When i connect 1 card compleatly to 2nd psu, windows cant see it. When i connect 2 cards partly to one and another psus, it is working, vents are spinning, but no power from second PSU is taken. Do i need to connect both PSUs 24 pin motherboard 2 wires to get it worked?
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abracadabra
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November 15, 2012, 02:26:21 PM |
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When i connect 1 card compleatly to 2nd psu, windows cant see it. When i connect 2 cards partly to one and another psus, it is working, vents are spinning, but no power from second PSU is taken. Do i need to connect both PSUs 24 pin motherboard 2 wires to get it worked?
I'm pretty sure you have connected something incorrectly. A picture would be worth 10000000000 words. |
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Cablez
Legendary
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Activity: 1400
Merit: 1000
I owe my soul to the Bitcoin code...
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November 15, 2012, 05:48:56 PM |
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When i connect 1 card compleatly to 2nd psu, windows cant see it. When i connect 2 cards partly to one and another psus, it is working, vents are spinning, but no power from second PSU is taken. Do i need to connect both PSUs 24 pin motherboard 2 wires to get it worked?
You have to make sure that the PSU that is not connected to the motherboard has its green wire jumpered to ground and is turned on by the switch on its rear. |
Tired of substandard power distribution in your ASIC setup??? Chris' Custom Cablez will get you sorted out right! No job too hard so PM me for a quote
Check my products or ask a question here: https://bitcointalk.org/index.php?topic=74397.0
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bcpokey
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November 15, 2012, 10:58:41 PM |
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When i connect 1 card compleatly to 2nd psu, windows cant see it. When i connect 2 cards partly to one and another psus, it is working, vents are spinning, but no power from second PSU is taken. Do i need to connect both PSUs 24 pin motherboard 2 wires to get it worked?
Well I don't think you read my last post but I will try to help again anyway. It sounds like your 2nd PSU is not connected at all, that is why the GPU does not show up in windows when it is connected (it is not being powered). You have not really provided any description your setup, nor pictures, leaving people in the dark so I will assume that it is simply configured wrong. I would A) Not suggest you run this setup B) If you really want to, try something like this: http://www.frozencpu.com/products/5637/cpa-167/Lian_Li_Dual_Power_Supply_Adapter_Cable.htmlIt will "bridge" the PSUs to the MB. They will both receive the "On" signal when you power up, and I believe some of the 3.3V will be shared (not 100% on that). At this point, hooking up GPUs should work. The reason I said A is that the PSU not connected to all the bells and whistles of the MB/HDs/Fans/etc. is likely to go out of ATX spec when a heavy (dual GPU?) 12V load is applied to it (such as running a mining card) with little to no 3.3/5V load on it (the cheaper the PSU the more likely this is to happen). This means that it will supply power in a way that is not recommended, and potentially damaging. But that's your call. Hope this has helped. |
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panda1
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November 15, 2012, 11:05:29 PM |
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Yeah, sounds like 2nd PSU is not turned on to supply power.
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monstrs (OP)
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November 16, 2012, 12:10:08 AM |
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Thanks to all, i got it working. 2nd psu is now connected to primary psu's - and are now feeding one card compleately. Strange thing thoe: it works only on rear card that is connected to pci-x1. Anyways, it works fine, with 1 card connected and a couple of vents on it it consumes totaly ~220W.
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monstrs (OP)
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November 16, 2012, 09:05:43 PM |
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Just an update.
Today connected the rig to free eletricity facility.
Problem was on the 3rd card, which hanged computer, when started mining. Interesting, than after a wile it restarts whole rig. Probably something went wrong with cooling on that 3rd card, because now without any load on it, it reaches 79 degres, any more ideas, what went wrong? Yesterday all was fine. Thanks.
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monstrs (OP)
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November 17, 2012, 09:02:19 AM |
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Had to lower clock speed to 300 nd memory to 150 to that hot card and still sits at 63 degrees. Its like no heatsink would be applied  Too bad i will be abl to get my hands on it only after 4 days. |
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monstrs (OP)
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November 24, 2012, 10:18:34 AM |
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If any interested.
VRM's was hot like hell on that HD 5870 gigabyte SOC edition. Dont know, what ccousd this. I just putted accelero xtreme cooler on it and on vrms heatsinks from accelero cooler. Now the temps is very good.
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