Quote from: XxOsurfer3xX on January 24, 2017, 07:15:55 PM

Quote from: malandante on January 23, 2017, 03:32:24 PM

Quote from: kmarx on December 08, 2016, 05:15:14 PM

Just to share what I've been observing with the "power spikes" and HWINFO64. Spikes seem to occur every 5-6 polling intervals (time = 100ms)

V9 (Intensity 8 ):

Fury Nitro:

1110/550, -108mv, ~352 S/s;

GPU Core Current: AVG 153A, but spikes as high as 247A

GPU Core Power: AVG 173W, but spikes as high as 280W

1140/550, -12mv, ~360 S/s;

GPU Core Current: AVG 175A, but spikes as high as 310A

GPU Core Power: AVG 210W, but spikes as high as 370W

RX470 Nitro 8GB:

1300/2100, -100mv, ~223 S/s;

GPU Core Current: AVG 78A, but spikes as high as 126A

GPU Core Power: AVG 78.3W, but spikes as high as 126W

V8 (Intensity 4 ):

Fury Nitro:

1110/550, -108mv, ~300 S/s;

GPU Core Current: AVG 145A, but spikes as high as 192A

GPU Core Power: AVG 165W, but spikes as high as 218W

1140/550, -12mv, ~310 S/s;

GPU Core Current: AVG 180A, but spikes as high as 224A

GPU Core Power: AVG 207W, but spikes as high as 274W

RX470 Nitro 8GB:

1300/2100, -100mv, ~190 S/s;

GPU Core Current: AVG 75A, but spikes as high as 99A

GPU Core Power: AVG 74.5W, but spikes as high as 99.6W

Do you think these spikes can be the reason why my rig freezes? I will describe my problem a little.

I have a 7970, a 280x and two fury nitros. During the last couple of weeks I have been trying to run my system stable with no luck. Freezes can happen at any time after starting to mine. Sometimes minutes, sometimes hours.

Rig specs: Asrock 970 extreme4. Sempron 145. 8GB ram. EVGA 1300 G2. Sapphire 7970 ghz edition, sapphire 280x vapor-x, 3x sapphire fury nitro OC. Tahiti cards undervolted on bios, fiji cards on msi afterburner. No OC on furys. Win 10. 12.6.3. CM 11.1.

First I changed all risers to v6 ones.

Next I upgraded the processor to athlon x2 because I noticed that I was getting less hashes when MSI afterburner was on and I thought the system would be more stable.

After a couple of days more I changed the mobo to asrock h81 pro btc with celeron 1840.

Still no luck.

I thought that the power was insufficient so I added a corsair rx1000 linked with an add2psu device.

No luck, freezes persist.

Changed EVGA to corsair hx1200i. This psu is powering mobo, raisers and tahiti cards.

Nothing changed.

I stopped undervolting. Still same freezes.

One fury died the day before yesterday. No fans, not detected in win 10, not detected on ubuntu, mobo not booting when the card is alone.

I changed risers again to the furys.

I used separate cables for each riser.

I powered the offending fury card with one cable for each connector. Still the same.

I tried catalyst 15.12. Same effect.

Sometimes I see 511 degrees in the fury card on CM log prior to freeze, sometimes it just stops hashing without any error and the watchdog doesn't restart the miner, sometimes all 4 cards go to 0.000 hashing without any error, sometimes after gpu reported incorrect temperature 511°C.

I'm already out of ideas.

Any hint, anyone?

Edit: typo

I also have this issue, I have 4xR9 Fury Nitro and also getting random freezes and one of my cards died in one of them. I have also tried different risers and MOBOs with no luck. It seems the Furys were not a good choice. Has anyone been succesful in running these cards stable? I'm out of ideas to try.

4x Sapphire R9 Fury Nitro
H81 PRO BTC R2.0
Celeron G1840
LEPA 1600W

I run a 6xR9 Fury Nitro rig with stock bios at 2,500 H/s rock solid. The card on the ribbon riser does run about 7C above the other 5 cards (settles in at 75C while other cards sit at 68C). This pushes the fans from a gentle 31%-44% up to 70% on that one card.

CPU: i5 4570
MB: ASRock H81 Pro BTC R2.0
RAM: 8GB G.Skill Ripjaws X series DDR3 1600 Mhz
PSU: EVGA 1000 G3 (PSU1) & EVGA 850 G3 (PSU2)
HDD: 128GB SSD with 20GB virtual memory
OS: Windows 10 Pro
GPU: x6 Sapphire R9 Fury Nitro 100379NTOC+SR
1x Risers: x5 Version 6 USB 3.0 PCIE Riser 1x to 16x
16x Riser: x1 Shielded 16x Riser Ribbon
Driver: Radeon Software Version: 15.12
Cooling: x4 Noctua NF-F12 IPPC 3000 (blowing on cards)
Cooling: x2 Corsair SP120 High Performance Edition (blowing on MB)