I have been keeping track of mining payouts from Fast-pool mining DOGE.

According to coinwarz and the pool itself, at my hash rate of about 12 MH I should be generating about 300-400k coins a day, fluctuating as difficulty changes.

Now this is what I have observed, just taking balance and time from the transaction page and letting the spreadsheet work out the number of hours and coins / hour:

As you can see, the number of coins per day never reaches what it should. The sudden spikes in coins are usually when I have had an extra 4MH rig running over night on test.

Now a pool with a little bad luck is fine every now and again, but this has been almost a week now with consistently low payouts.

I have received some MSI R9 280x 1050/1500 edition cards today.

When running that, GPUz shows no vrm temperatures.

GPUz (and MSI Afterburner) show only:
GPU Core
GPU Mem
GPU temp
Fan
Load
VDDC
Mem usage

Nothing else shown.

Why would that be? I am using same AMD drivers as all my other rigs. Do these cards lack all those extra sensors?

I can't tell how hot VRM is but the card is throttling. I run at 85% fan and card runs at 60 deg, but every few minutes activity drops from 100 to 34 and hash from 700 to 200.

I have received some MSI R9 280x 1050/1500 edition cards today. They have Bios 015.042.000.003.000000

When running that, GPUz shows no vrm temperatures.

GPUz (and MSI Afterburner) show only:
GPU Core
GPU Mem
GPU temp
Fan
Load
VDDC
Mem usage

Nothing else shown.

Why would that be? I am using same AMD drivers as all my other rigs. Do these cards lack all those extra sensors?

I can't tell how hot VRM is but the card is throttling. I run at 85% fan and card runs at 60 deg, but every few minutes activity drops from 100 to 34 and hash from 700 to 200.

I just posted this:
https://bitcointalk.org/index.php?topic=404139.msg4374559#msg4374559

Then I found your post.

Seems I have exactly the same issue.

Something has changed on the cards. The VRM temperature on my old cards runs at 70 deg max.

On the new ones it's over 100 on 3 of the 5 and about 90 on one and 75 on the other.

The cards throttle and mining performance suffers.

Has no one found a solution to this? I am surprised no one has taken off the cooler and inspected the VRM cooler. Maybe extra thermal paste?

I have 2 R9 280x I bought a while ago. They are running in xfire and mining at 740 with these settings:

--gpu-engine 1070 --gpu-memclock 1500 --gpu-powertune -30  -I 13 -g 2 -w 256 --thread-concurrency 8192

They run in a Coolermaster case. Both sit about 70 deg.

VRM temp shown in GPUZ is about 80 degrees.



Now I have bought another 5 and put them in an open air rig.

I run them with the same settings.

These cards start to mine at 730KH but quickly they drop down to the mid 600s.

GPUZ shows activity at 64% and VRM temperatures over 100 deg. About 109 degrees maximum.

So what's changed? Have Sapphire released an inferior card and badged it up the same?

Yeah I think I will test it on its own, see what happens

I am using Win 8.1

So I am running 5 x R9 280x in one system. All cards are brand new Sapphire Vapor X.

4 of them are plugged into the board with 1x risers and are hashing at 700-740 with TC 8192 clocks 1070/1500 (all the other usual settings g 2, w 256 etc).

The last card is plugged into the second PCIE x16 slot with a x16 -> x16 riser. In Trixx it is detected as 4x PCIE which is correct.

Slots on the board:
1x PCIE
16x PCIE
1x PCIE
1x PCIE
16x PCIE (running at 4x)

The card on the x16 riser only runs at approx 600 KH with those settings.

If I lower the TC to 8100 then it jumps up and almost matches the others, but it gives HW errors.

If I lower the clocks to 1050/1500 it goes up slightly. If I lower further to 1030/1500 it goes up a little more. Maxxes out at approx 650 KH.


Question is then what settings can I try to increase the hash of that card?
I can't lower the TC. If I raise the TC it makes no difference.
I have undervolted to 1.1 and it is still the same.

Maybe I have a bad card?

Wow.

So you want 300 BTC for your 4 mil NXT.....and you bought your 4 mil nxt for how much? Less than 1 BTC?

Screams SCAM COIN to me!!

gigabyte 990xa-ud3

To get all 5 cards working, the middle x16 slot needs to be shorted. All other slots work without any shorting at all.

If you short out pin A1 and B17 on the x16 slot the motherboard will not power on. You MUST short out pin A1 and B81 - B81 is the second to last pin at the very end of the slot.

Selling 3900 NXT coins.

Happy to use escrow service.

As you can see I am not a new member here so this isn't a quick scam like so many of these ads.

No that's the 16 slot shorted exactly the same way as I would with the 1x slots. Short the socket and then plug in the riser.

Do I need to short pin A1 and pin B81 instead on a 16 times slot?

I am having very similar issues with a Gigabyte 990 UD3.

With 3 cards directly to the 3 16x slots it works fine.

With 5 cards all plugged into 1x risers, only 4 cards get detected in Windows. That is with none of the slots shorted.

The card that isn't getting detected is the card plugged into second (middle) x16 slot. Both of the others and both of the 1x slot cards get detected and mine OK.

If I short the presence mod on the 1x slots it makes no difference.


If I short any of the x16 slots with the presence mod, the motherboard WILL NOT power on at all. As soon as I pull out the shorting wire, it powers on.

I will start a separate thread here with its own bounty:
https://bitcointalk.org/index.php?topic=387663.new#new

I have a Gigabyte 990XA-UD3 board.

It has in this order:
PCI x1
PCI x16
PCI x1
PCI x16
PCI x16

Now with 3 cards plugged directly into board in the 3 x 16 slots all 3 are detected and work fine.

With cards in 1x risers, the card in the second (middle) x16 slot isn't detected. I have 5 cards plugged in but Win 8 only sees 4.

I have tried to short out pins A1 and B17 on the x16 slot, but with them shorted the mobo won't turn on. I have tried this on 1_x16 and 2_x16 slots and it won't boot with either of them shorted.

I saw someone post about changing PCI latency to 32 which apparently might help, but there is no such setting in the BIOS.

What's the trick to getting the BIOS to detect this card?

Tell me:

- What motherboard do you use
- How much memory
- What GPU clock speeds?
- What hash rate?
- How many cards?
- Is it stable?


Personally:
Gigabyte Ga-Z68
8 GB 2133 Ram
GPU speeds 947/1250 - highly unstable / GPU speeds 850/1250 - slightly unstable
Hash rate 750 with 850/1250 and 840 with 947/1250
Trying to run 2, 3, 4 or 5 cards per board
No it's not stable at all

Well, I can RMA them and get my money back that I paid for them, they are all brand new and still in original packaging.

I want to sell all 10 and I want what I paid for them.

Hi,

I have bought 10 cards last week. I can't get them stable with my motherboards (cheap Gigabyte ones) so I will be sending them back.

Before I do though, is there anyone out there that would want to buy them?

Payment preferred in any crypto currency, and preferably shipped within the UK.

They cost approx £320 each (approx 0.76 BTC each).

Yep, tried g 1, g 2, g 3 and g 4 but it doesn't make much difference to the hash rate or stability.


So what? The PSU spiking causing crashes?

Can anyone help?

I cannot get my R9 290 cards stable at all. 
- I have tried running 1 card, 2 cards, 4 cards and 5 cards. All configurations the same.
- I have tried on different motherboards (all GA-Z77) and using different PCIE slots.
- I have tried different cards and updated BIOS on the cards and the mobo.
- I am using powered 1x risers and have tried different risers in different slots. I have also tried unpowered 16x risers.
- I am using Powercool X-Viper 950W PSU to power mobo plus 2 cards. When I run more cards I have a second 950W PSU powering too. I have the same PSUs powering 5 card 6950 and 6970 rigs without fault.

I run them at I 18, TC 21000 and standard 947/1250 clocks. The computer crashes within 10 minutes of starting CGminer.

If I run them at TC 8192 I can only go up to I 13 without HW errors but only get 500 KH. As soon as I increase the intensity I need to increase the TC to stop the HW errors. If I have the TC over 8192 I get the crashes.

If I reduce the clocks to 900 / 1200 I can reduce the crashes to approx 1 per hour or so. Hash rate approx 750 KH.

If I reduce the clocks to 890 / 1190 I can reduce the crashes to approx 1 ever few hours. Hash rate approx 724 KH.

So do I have a bad batch of cards? Hard to imagine all 10 cards are bad....but it seems so.

Is the motherboard causing issues? Can the motherboard affect how fast the GPU can be clocked?

Everything I have read seems to sound like it should be easy to run at 947/1250 and most people can run at 1000/1500 without problem. I haven't found anything yet after lots of searching that indicates anyone else has the same problem.

I have the Sapphire R9 290 cards btw.

I have 3 x 6970 cards and 2 computers. One with Windows 7 and one with Windows 8.

Windows 7 has drivers 13.9 and Windows 8 has 13.12

If I run 1 card, or 2 or 3 on the Win 7 machine all 3 run at about 480 KH.

If I run 1 card on the Win 8 machine, it throttles, the fan spools up and then slows down, the activity drops to between 50 and 80%. The has rate drops also to about 300 KH.

If I add a second card to the Win 8 machine then that card runs fine at 470-480 KH but GPU 0 still runs slow with low activity.

If I swap the cards over, GPU 0 always runs slow.

So could it be a Win 8 issue?

13.12 issue?

Though I am running another rig, same motherboard as the other 2 also with Windows 8 and 13.12 drivers.

This rig has 5 x 6950 installed and runs perfectly well. All 5 cards at max usage / activity and all mining about 430 KH.

My CGMiner settings are pretty simple -I 18 -g 2 -w 256 -thread-concurrency 8192

I also have setx GPU 100.....etc in my batch file.

What am I missing? Is there a way to disable this throttling?
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