Re: Official FutureBit Moonlander 2 Driver and Support Thread

Quote from: Finless on March 24, 2018, 07:31:43 PM

Quote from: scoobysportD on March 24, 2018, 07:16:05 PM

Your welcome! Have you tweaked memory voltage as well? And what hub are you using? As you've probably noticed by now, these MLD's are at the top of what most hubs can deliver. Especially if using multiple MLD's. If the hub is not powerfull enough, you can get these errors. That's what i don't get at the moment with my updated mine, the 2 slow ones are just, SLOW... But not to many errors! Still, gonna swap the 120watt powersupply for a 150watt powersupply and see if that fixes it all. Or if i need to use a 2nd hub and that the DC-DC converters in my hub, in the end, just are not strong enough.

I have a 6 amp brick PS running 2 MLD's. It's handling it fine as the voltage on the buss of the hub holds at 5.1v.
It's possible the 5V has ripple or noise since it's just a cheap brick PS.
The error rate is related to clock speed as at 832 I am below 1% error rate. at 852 it's over 20% error rate.
Even if I try this with one stick same thing. Core set to 8.2V doesn't help.

Yes I set mem voltage as low as I could go per the info on page one until it would not hash. Then went up till it did. Running .76 memory as I recall.

I might get a more solid clean PS and see.

Bob

Yea supplying power is a finnicky thing with these MLD's I've got a feeling my current issue IS power related as well. If i'll remember i'll also measure the memory voltages on mine MLD's. I have tweaked it a bit but then i gave it a little more juice 'just in case'

EDIT:
Just tested a couple of the memory voltages, ranging from 0.81 - 0.87v

Also swapped out the powersupply of my hub for a 150watt laptop power supply, so far only 1 MLD is slow now compared to the others. If i'd know which one that is i could get some more testing done with a separate hub or something to see if the problem is caused by lack of power or something else...

Edit 2:
With some messing around i think i've found the culprit. One of the sticks was drawing 3.7 amps at 5v!! Even while running at 600mhz for a test it went over 3.58amps. Guessing this one is defected Sad

Core voltage and memory both are at 0.8-0.82. This stick won't hash above 2.6-2.68MHash, so i'm hoping bitshopper.de has some sort of warranty for DOA sticks...