I have 30 identical desktops but two of them insist on having 8 S/s instead of 17. “top” looks the same as the others, hard drives seem OK, RAM swaps and checks were OK. I couldn’t see anything in the log files, but I wouldn’t know much about that. Any suggestions on how to diagnose?
BTW I can’t just sell them and get GPUs because they haven’t dropped in price for 6 months, and the electrical cost is only 3 W per S/s. R9 390’s at 100 S/s doesn’t bother me but 280x at 100 S/s I can only say ouch.
Can’t find it right now, and apologies your checks already covered this, but I’m almost sure I read a thread the other day where this problem was solved by getting the ram in dual channel mode. Not sure what you mean by ‘top’ looking the same, but if it means your ram is in the same slots as others, try the second dual channel configuration (often it’s a1-b1 or a2-b2, consult your mobo documentation) and/or check bios settings to see if dual has to be enabled there.
RAM speed is good. I’ve swapped it out and everything. “top” is crucial for linux as it shows the processes.
CPU temps were 50 C, so it’s not busy. I need to learn how to see the HDD accesses by proc number and see if those USB error messages I saw at boot are interrupting the processor a lot. I can turn them off in UEFI, but it seems too coincidental to see the same problem and speed in 2 of them.
Yes, they are identical. Is there a name for VRM in sensors data? I can only get 2 other temps out of it after running sensors-detect and after installing sensors-applet I still can’t get any voltages. I don’t have physical access to them while it is on.
No, 10 S/s per core on new, fast desktops. 30 S/s on new fast laptops. 20 S/s per $200 used desktop from ebay. All using nheqminer with xenoncat, sending it to a pool, who sends your payout to your exchange ZEC address. I have 43 desktops on a shelving rack giving 800 S/s. Probably $100 in electricity giving 2 ZEC, about the same as GPUs, but in the next few days they should pull ahead of me.
I’ve been following your posts since launch because I was intrigued by your setup. Are you going to keep mining when GPU’s will pull ahead of you? I’m just a small hobby miner and I’m using 4 core I5 2500k desktops atm. We’re living small and the girlfriend doesn’t want open rigs with 6 GPU’s each in the house and no high electricity bills so I’m limited in what I can do. Each processor gives me 15 sols/s, so very modest. 3 of them have pci-e 3.0 onboard though so I’m debating which GPU’s to add to the little miners or none at all.
I’d max the desktops, which still is going to be far from silent. 280x for $100 or 470 for $200 at half the 280x electricity seem to be the choices. Half the electricity means it’s going to be more quiet per S/s
New desktops with 4 cards of DDR4 should be about 40 S/s on xenoncat. There are 2 laptops mentioned in the Intel/AMD CPU speed thread. One was 29 and the other was 32. 2012 CPUs are 18 S/s.
The good GPU options are now 1/3 the initial costs and the 2/3 the electricity. I’m 3 watt per Sol/s and $8 per S/s. I’m definitely not adding more and will probably sell them as soon as I have 2000 S/s of GPUs. I’ve got 44 working now that give me 800 S/s. I’m just curious as to these two giving half. It’s certainly not worth the time to try to fix them, losing time on figuring out how to get GPUs in 10 or more of them.