Based upon what I've been reading across multiple threads, if you own one of these, I would definitely underclock it unless you got some amazing cooling in front of it
Under clock by how much?? Any ideas? I am about to leave town and don't want this thing blowing up. Anyone have a good setting to put it on?
On default setting (600) it seems to be overclocking. I'm averaging over the stated 815, but also getting a lot of HW errors and chip temps seem high especially since L3+ says keep under 80 C. Any suggested settings would be helpful.
Yup, just like the D3's. They knew these units were going to have a limited shelf life. They're definitely overclocked. You can tell by the numbers that they are running at redline. I would strongly recommend against overclocking these. Not only for the miner's sake. They're drawing a LOT of watts and amps. If your breakers and wiring aren't extremely robust, you could be playing with fire. Literally. Especially all these folks in here talking about running these beasts on 120v. Bad bad idea.
Care to explain about why running on 120v is a bad idea?
I am running on 120 V but not with just 1 PSU. Instead I am using 2 PSUs - one APW3 (to power 2 boards and main) and one EVGA 750 BQ (to power third board). Power cables are 14 AWG and extension cord is 12 AWG. I am also using a surge protector. EVGA is pulling 465 watts. APW3 is pulling 940 W. Making it 1405 W total. Which is still under 80% of max (120 V x 15 A = 1800 W). I am making sure that nothing else is running continuously on that breaker (once in a while a LED lamp or a iPhone charger).
Frequency set at default but manually set fan to 100%. PCB temperature varies from 55-65 and Chip temperature varies from 70-80. Mining at 815 GHS.