The other 4 rigs I setup were all Z77 Extreme4, never an issue. I only bought this one as it was $50 cheaper with rebate from Newegg. I figured what harm could going AMD instead of Intel be. Great thought, lol.

Mining when there's ASIC's involved is all about timing, when to buy the ASIC, how long to mine and when to sell before it loses values and then repeat. Its very stressful and I personally prefer to stick to coins that don't have ASIC's. So for me, I'll move to other GPU based mining which don't have ASIC's yet or simply sell them off. Scrypt mining days are numbered

Yeah, I had setup 4 other rigs with identical setups, same version of BAMT, but this specific motherboard had this issue and it was brutal to diagnose. I was going to RMA the mobo until this fix worked. Thanks again, and doge's sent. Thanks for your help

I'm looking through the links for #2 and I see all types of win64 downloads but no win32? Where are the win32 downloads?
Thank you.

Your suggestion worked perfectly, 48+ hours straight without a glitch. If you have a dogecoin address, PM or post it here as I'd like to make a donation to thank you for your help. Thanks again!

I made the changes suggested in the thread, rebooted and disabled my cronjob. I'll know in 12 hours if it worked but it looks very promising as I'm convinced its a network / NIC issue and not the mobo. Thanks for your help uncle_muddy.

I finally got crontab to coldreboot after 12 hours, the server hung at around 8 hours. The server was no longer connected to my router although the USB stick was still flashing (showing the OS is running). After 12 hours, the server successfully rebooted and restarted on its own. Clearly, the OS is still functioning but something is up with its internet connectivity, it seems to be dropping the connection. I'm not using any wireless, using a wired cable between the onboard NIC to the router and I also tried a 1GB NIC instead of the mobo NIC.

I can't tell if the NIC is maybe going to sleep because of the mobo (no idea why that would happen) or if the OS is causing it. I've setup this type of rig a few times with other ASRock Mobo's and never seen this issue before so I'm a little baffled.

Uncle_muddy, if you can find that link I'd really appreciate it as it seems what you had is exactly the issue I'm having. Once you removed the network manager, did you replace it with something else?

Thank you!

I've read the thread you linked me to and it sounds like we have the same problem. The idea of RMA'ing this mobo is a real pain though as it seems to work for 8 hours at a time. It doesn't make sense to me from a logic point of view that it would be the mobo as it works solidly for hours. I'm currently trying to do a soft reboot via crontab to reboot the system before it crashes hoping that will fix it. At least I see that as a better solution than a hard power cut, but I'm having problems getting the reboot command to execute right now.

After you RMA'd the mobo, did it work for you? Other than swapping the mobo, did anything else change (any other different hardware)?

Anyone know if its possible that the mobo is causing a sleep? This is the only ASRock 970 I've bought, all the other ones I've gotten were Intel based and I can't for the life of me figure out what's going on! Help!

This was a new build so I haven't done any optimizations yet, its running stock settings for GPUs and for BIOS too. It takes about 8 hours for the rig to hang so its not so easy to run just 1 GPU at a time to try and isolate it. But its clearly not the USB drive, not the NIC. Since it runs fine for 8 hours at a time I can't see this being a CPU/RAM issue. I'm really baffled what else it could be. The only fix I can come up with is writing a reboot script to reboot every 6 hours or so and hope that circumvents the hanging, but I'd rather fix the issue than rebooting 4x/day.

PSU: 1300W EVGA Supernova Gold

It runs at 1120W as checked by a wattage meter.

Hello, I've been going nuts trying to figure out what the source of this issue might be, after 6-8 hours my rig seems to hang, I don't believe its crashed as my USB stick has a LED that keeps flashing, however I can no longer ping my rig and its no longer connected to my router when it hangs (verified through list of clients on my router). I have to manually reboot every time to get it restarted and it will hang again and again after 6-8 hours.

My rig:
4x Sapphire 280x OC edition
Mobo: ASRock 970 Extreme4
CPU: AMD Sempron
RAM: 4 Gig RAM
PSU: 1300W EVGA Supernova Gold
OS: BAMT 1.2 powered by USB stick

I've tried the following:
Tried inserting the USB stick in 3 different ports (no luck)
Tried formatting the USB stick and re-install OS (no luck)
Tried a new USB stick (no luck)
Tried installing a new NIC for internet connections instead of the onboard NIC (no luck)

I'm officially out of ideas as to what the issue might be, any help really appreciated.
Thank you!

XFX is, they're offering this as an RMA to a 7950 I have which is running over 90c as they no longer carry the 7950 or 7970.

I just double checked and you're right, its the same number of shaders as a 7950, not as a 280x. Has anyone tried it for mining? Same on all other fronts as a 7950?

Does anyone know the difference between a 280x and 280 for altcoint mining (LTC)? The prices of 280x are through the roof but 280′s are still affordable. They have the same number of shaders and they seem to be marginally the same? Anyone have experience with a 280?

I have 4 Sapphire Dual-X 280X's and one of them is really acting up. Loud fan (sounds like the blades are loose) and the RPM has dropped to <100 RPM on 1 of the 2 fans (according to CGMiner). I'm compensating by using an external fan and its keeping the temps at 77c (versus the other GPU's at 71c), but I would like to know if anyone has experienced this before. I can't think of a fix for this and would really like to get this working without doing an RMA as it is functioning with the external fan. Never touched the BIOS so its running stock.

Thanks!

Hi, do you have a readme or guide for compiling from source on windows? I have VS 2010 Ultimate and I'm having the hardest time trying to compile the source. I have all the dependencies installed from the 7z provided, installed CUDA 5.5, VS 2010 Ultimate and using 2013-12-18.zip as the source and simply trying to make clean (works) / rebuild and getting lots of errors. I can post the error logs here but I wanted to ask if there's a guide / readme first as I must be missing something if I can't get the solution explorer to rebuild without any mods to the source. I've tried code generation compute_10,sm_10, compute_20,sm_20, compute_35,sm_35 and they all give me errors (different errors). Any help welcomed, thanks!

Looks ok to me, I'd suggest a Gold PSU though and possibly a slightly bigger one. That mobo can handle up to 5 cards but your PSU will only be able to handle 3. In case you decide to upgrade one day...

I prefer http://dustcoin.com/mining as this gives you a comparison on which coin will earn you the most.
Good luck mining.

I'm on Xubuntu so I only have the temp settings that CGMiner spits out which is 81c. There was no difference in temps between the desktop fan I had and the industrial sized fan. I backed off the optimal settings to intensity 17 and removed all OC settings to lower the temps a bit further to 79c, but I lost 120kh/s for just 2 degrees. It seems like its almost not worth the savings.