Topic: Claymore's Dual Ethereum AMD+NVIDIA GPU Miner v15.0 (Windows/Linux) - page 1250. (Read 6590565 times)

The reason the 390s are fine is because they have sufficient power from the pci-e connectors on the card.


How to tell if the riser u buy connects to the pcie slot +12V? I believe these btc boards were designed when unpowered ribbon risers were the norm, these additional molex connections should be redundant when using powered risers.


The Nano's are fine with 6pin pcie because thats all they need, unlike the 480s which it seems really should have had an 8 pin.

Current CDM version is useless for rejects monitoring, it restarts if you have more than 50% of rejects, and if you run fine for 10 days you can easily have 5 days of rejects in a raw. Claymore agreed that it should use another method and I hope he will implement it.

As for the rejects, go away from DwarfPool, it went nuts last weeks with rejects. There are reports that any miners may suddenly start getting rejects with no reason. DwarfPool advocates usually say it gives max profit of all other pools. I switched to ethermine.org and worked for 2 days there. And I definitely may tell you that profit is EXACTLY the same. For my 272MHs rigs I had this on DwarfPool per day: 2.03, 2.05, 2.01, 1.85, 1.87 (WTF?), 2.01.... Plus few hours of rejects with zero income. On Ethermine I have 2.05 per day with no glitches, stats recalculations, rejects etc. And even with 1% fee (Dwarf had 0% until July to compensate some glitches). Ethermine may estimate lesser profit in Ether than DwarfPool shows per day, but in fact I have exactly the same. Keep mining @ Ethermine right now.

Looks like 480s for mining will need to run only on stock clocks and should not be overclocked because of this power overdraw risk. Stock settings only gives 24.5MHs for 480, while 390 can deliver 26-27MHs, without OC, and the 390 and Nanos are very overclockable.

My 480 on PCI slot is running stable mining now on Day 2 without doing any OC & undervolting.

You need the Asrock H81 pro btc boards, they use two extra molex connectors on the mother board, and do not use the USB riser which does not connect to the PCIE slot +12V.

Not that much, actually.

If you looked at the youtube video by TecLab, they measured every supply source for 480 card (PCI-e 12V and 5V, extra 12V) and found that with some GPU tests (and mining is like hardest of them) the 480 card draws around 126W from 12V PCI-e, 92W from extra 12V + some from 5V PCI-e. In total, they had up to 255W in tests instead of promised 150 (75+75), including 65% more from PCI-e 12V than standard allows. No wonder why they burn motherboards.

In that case I see absolutely no sense replacing 390 by 480.

See this with subtitles:
https://www.youtube.com/watch?v=nKcHR1qW3w4

I also have a rig with 6 x Nanos OC to 1040/300 with Heliox ROM Mod hashing 175MHs, with same H81 mobo setup. Both are molex and risers powered from PSU. Nanos have same 6-pin connector like the 480s. This Nano rig is also functioning well and hashing for more than a month.

6 pin pci-e is rated for 75w, mboard pci-e slot is rated for 75w while the rx 480 is rated for 150w it seems to be drawing slightly more than this @ stock settings. If only Amd had used an 8pin pci-e (rated for 150w) connector it wouldnt be an issue.
Yes it can depend on the board some manufactures design with higher tolerances than others, it may also depend on cost cheaper models for example might has less tolerance to help reduce cost.
Powered risers can be connected via molex directly into the riser board or often are used with sata to molex tails that commonly ship with most usb risers.

... that means powered risers only will not be enough if you OC? Likely need molex powered too, in case of H81 mobo.

I am guessing probably that's why my rig has no issues because the risers are powered via SATA from PSU. And the ASrock H81 Pro BTC board has also molex powered drawing from PSU. With both of them powered, it will give enough juice to 480 when OC.

Meanwhile, with same mobo setup, I have 5 x 390s OC to 1050Mhz/1125MHz giving me 30.5MHs per card, and no issues with that too. Both risers and molex are powered. The 390s draw much much more power than the 480s.

Your 6 pin is fine. But the 480 needs 75W or more from the PCIE slot if you overclock, that is the problem.

So my 1300 watt evga 6 pin won't supply enough power to my 480's? I could understand if your using a not powerful enough power supply or not a single rail because that card should be pulling as much as it can straight from the 6 pin correct?

Just seems weird as I would feel like it would keep trying to pull from the 6pin and that would burn out that connection or kick off the power supply..

I just don't understand why it's not burning up the pci slot as it's only rated at like 75 watts or something correct or depending on the board?

Are the powered risers connected straight to the power supply?

This is the reason I don't use the molex to sata pigtails that are usually supplied.  Mine are soldered directly to the holes on the riser board, although you should have no problem using the molex connectors from a good PSU. Molex connectors are supposed to be rated at 11A per pin which means a 12v molex connector could supply 132 watts per card.
Connecting directly to the motherboard means the circuit board traces and ATX pins have to supply 3 cards not just 1.

Trying to get Claymore's miner working on my test rig, but cannot get more than 2.6MH out of a 390x.  Any help would be appreciated.

Rig:
Ubuntu 15.10
i7 4790k
16GB Ram
Asus 390x



config.txt:

-epool eth-us2.dwarfpool.com:8008
-ewal XXXXXXX
-dpool http://dcr.suprnova.cc:9111
-dwal plggy.R9390X
-dpsw x
(tried changing intensity and other settings with little change in hashrate)


start-up script:
#!/usr/bin/env bash

export GPU_SINGLE_ALLOC_PERCENT=100
export GPU_MAX_ALLOC_PERCENT=100
export GPU_FORCE_64BIT_PTR=0
export GPU_MAX_HEAP_SIZE=100
export GPU_USE_SYNC_OBJECTS=1

echo "Starting Claymore"
./ethdcrminer64


log:

21:49:09:942   a2930740   OpenCL platform: AMD Accelerated Parallel Processing
21:49:09:942   a2930740   
Cards available: 1
21:49:09:942   a2930740   GPU #0: name: Hawaii, 3072 MB available, 44 compute units
21:49:09:942   a2930740   Total cards: 1
21:49:09:942   a2930740   Initializing...

21:49:09:942   a2930740   GPU #0 recognized as Radeon 290X
21:49:09:942   a2930740   POOL/SOLO version
21:49:09:942   a2930740   b150
21:49:09:944   a2930740   start building OpenCL program...
21:49:09:946   a2930740   done
21:49:09:946   a2930740   GPU #0: set -etha as 0 (ETH algo for fast cards)
21:49:09:958   92ffd700   ETH: Stratum - connecting to 'eth-us2.dwarfpool.com' <209.141.38.185> port 8008
 . . .

21:49:10:048   921e7700    DCR - connecting to dcr.suprnova.cc:9111
21:49:10:048   a2930740   miner-proxy stratum mode
21:49:10:048   921e7700   http send request: {"method": "getwork", "params": [], "id":0}
21:49:10:048   a2930740   Watchdog enabled
21:49:10:048   a2930740   Remote management is enabled on port 3333
21:49:10:048   a2930740   

 . . .
21:49:10:868   92ffd700   ETH: 07/01/16-21:49:10 - New job from eth-us2.dwarfpool.com:8008
21:49:10:868   92ffd700   target: 0x0000000225c17d04, epoch #60
21:49:10:868   92ffd700   ETH - Total Speed: 0.000 Mh/s, Total Shares: 0, Rejected: 0, Time: 00:00
21:49:10:868   92ffd700   ETH: GPU0 0.000 Mh/s
21:49:10:868   92ffd700    DCR - Total Speed: 0.000 Mh/s, Total Shares: 0, Rejected: 0
21:49:10:868   92ffd700    DCR: GPU0 0.000 Mh/s
21:49:11:044   93fff700   Setting DAG epoch #60 for GPU #0
21:49:11:044   93fff700   Create GPU buffer for GPU #0
21:49:17:158   93fff700   GPU 0 DAG creation time 6108 ms
21:49:17:158   93fff700   Setting DAG epoch #60 for GPU #0 done
. . .
21:49:21:956   909e4700   GPU #0: name: Hawaii, 3072 MB available, 44 compute units
21:49:21:956   909e4700   ETH - Total Speed: 2.618 Mh/s, Total Shares: 0, Rejected: 0, Time: 00:00
21:49:21:956   909e4700   ETH: GPU0 2.618 Mh/s
21:49:21:956   909e4700    DCR - Total Speed: 39.272 Mh/s, Total Shares: 0, Rejected: 0
21:49:21:956   909e4700    DCR: GPU0 39.272 Mh/s
21:49:21:956   909e4700   Incorrect ETH shares: none
21:49:21:956   909e4700   Pool switches: ETH - 0, DCR - 0
21:49:21:956   909e4700   Current ETH share target: 0x0000000225c17d04, epoch #60
Current DCR share target: 0x000000003fffffff, block #41947
21:49:21:956   909e4700   GPU0 t=46C fan=90%
 . . .



Aticonfig shows 100% load but card stays cool and hashrate low.  With ethminer I am around 30MHs with this card.

No wonder, 480s were destined to fail from the beginning. My slightly overclocked 480 takes about 170 watts at the wall with gold PSU, 6 pin pcie should be absolutely fine, unless I am not aware of some PCIe limitations.

The issue with using powered risers would be drawing more than 75w thru them since the 6 pin pci-e is insufficient to supply all the power the rx 480 needs it will try and draw any additional power thru the powered riser which is likely to result in melted molex connections.

Powered risers have a molex power connector that supplies power to the card.  All power pins on the PCIE connector are powered through this connector not the mother board.

I have 2 480s plugged directly on my mobo, and I've had no problem maybe I should don't understand why it would burn up there and not the pci port.

Even if you use the riser cables it wouldn't help in the event of that because the same power would be going to your mobo from your power supply.

wrong he was using unpowered ribbon risers , recipe for disaster long term

Put the above in your .bat

I believe he said all gpus were connected directly to the motherboard. In this case with the rx 480 I doubt powered riser would help much anyway because the card would draw too much power thru the riser and end up melting the molex connected to the riser (which is admittedly preferable to melting the atx connection on your motherboard). Still it seems clear the 6 pin pci-e connector on reference rx 480 is insufficient, I will be waiting for aftermarket cards before venturing into mining with polaris.

I guess that response was to me?

It seems like those settings applied on my main rig, even though I never edited any of the settings other than pool...

But do I do that in my .bat file, or take the "#'s" away in the config file? I could try it, but I don't have my other system on currently, so I'm just asking with what I have in front of me. But thanks for your help so far. I hope that does the trick.