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Legendary Online
Activity: 1302
Curmudgeonly hardware guy
The black epoxy won’t come off under rubbing alcohol or acetone. The white epoxy is acetone-soluble. I don’t know of any epoxy that’ll dissolve in rubbing alcohol, nor would I respect it if it did. But that’s not really the point, or at least not the entire point.
As has been mentioned a lot of times before, having to heat 50-60 individual heatsinks and pop them off and then pop all the backside heatsinks off and then soak the board in an industrial solvent and scrub off epoxy just to get the boards to a state S5 boards are already, and then you have to strip the chips and then reliably install them on something being careful around the 0.4mm-pitch pads and traces, really REALLY isn’t worth the trouble. Don’t even argue. It’s not going to happen. I already put up more effort than most sane people would to get BM1384 products out there using stripped chips.
So anything newer than BM1384, I’m working on BF16 dev for that because I can actually get new chips instead of wasting buttloads of time jacking around with someone else’s crap trying to harvest chips out of a hairball of metal and glue.
Were you cleaning an actual thermal adhesive, or just regular heatsink grease?
Jr. Member Online
Activity: 36
Just got shipping notification for the revised Terminus PCBs, only a few days after I expected to already have them in hand. So not too bad. Hopefully they’re delivered by week’s end and, double hopefully, the new regulator design works as expected.
Nice hopefully you can use the same pcb to run the 16nm chips can’t wait for that..
Newbie Offline
Activity: 6
Just got shipping notification for the revised Terminus PCBs, only a few days after I expected to already have them in hand. So not too bad. Hopefully they’re delivered by week’s end and, double hopefully, the new regulator design works as expected.
That’s great news. Please keep the updates coming!
Newbie Offline
Activity: 14
Count me in!
Legendary Online
Activity: 1302
Curmudgeonly hardware guy
You uh, you sure about that? Top overclock for an S1 was about 205GH. A good undervolt would see something like 140GH from 170 watts or so. The Terminus here is probably drawing around 65 watts, so about one third.
Or did you mean 175-225MHz, which would yield 90-115GH/s? Around there, a good undervolt for S1 would see something like 100-130W I would guess (it’s been about two years since I did an extensive study on S1 undervolting) and at those hashrates the Terminus would see more like 35-40 watts.
Newbie Offline
Activity: 14
very nice vh! Is that a new version of cgminer? I cant get the one on the gekko front page to work.
Published at Wed, 19 Apr 2017 13:06:48 +0000
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