Of course it is, I bought a bit at 42k. Seems to be how that goes each time I buy
Of course it doesn't change that fact that BTC will recover but it is always bothersome knowing I could have a gotten a bit more if I were more aggressive on the buy trigger price. cest' la vie

Per fan.

Perhaps try reading up on how Bitcoin mining and other crypto mining in general works. Mining nodes MUST be able to communicate with each other in a timely fashion to be able to know if/when a node reports a block found, add the block to the chain and then have that confirmed before someone else is successful. What you are describing as 'offline mining' is no better than putting a note in a bottle, tossing it in the ocean and waiting for someone to pick it up, read it and then replying with another note in a bottle.

At least with DBS links there is no blocking possible by a gov simply pulling the plug although latency will certainly be an issue resulting in any blocks you find will end up being stale and be orphaned.

Can't say I'd call it a bummer -- Once again, I bought (at $42k) during this dip and when prices goes back to 'normal' or of course preferably a lot more than end of last year then sell some of the gains that should pay for the A12 I recently bought

You would be better off having the down right cold outside air mix with the room air and having the miners draw in the now cooler room air. Thing is miners do not like to run at chip temps much below 60C (140F). Reason is that being a power device, high temps are a natural part of the territory and semiconductors behave differently as temp rises. That is why miners have a pre-heat cycle before really starting to ramp up to full speed.

Ja the miner will try to control the temp by adjusting fan speed but that relies on Canaan properly tuning the temp/speed control loop... Point is the miners may just be too cold.

That should be self-explanatory: Printed Circuit Board.
They are talking about the maximum temperature the PCB is rated to be able safely operate at.

Good link regarding USB-C PD & data transfer as well as how the various USB ports (A, B & C) are used.
Something I did not know about how USB in general does things.So still sounds like that a PD port is only to be used for power or data but not both at the same time.

How would we know? It all depends on where you live and the equipment costs, gov-funded incentives, amount of sunshine you get, etc... Given that, all we can say is -- maybe.

Only you can find answers to those points so DYOR and stop looking for generic answers to location-specific technical questions.

Sidehack will have to chime in to confirm but I believe it is a capacitor -- not a diode. Somewhere further back in the thread there is talk about measuring the Vcore across it and it was referred to as a cap..

Cgminer does have provisions for temp monitoring, fan control, shut down, etc. but -- there needs to be a temp monitor of some sort to feed that info into cgminer and none of the Compacs have that. You could always look for RasPi projects that deal with temp control, mount a temp sensor to the heatsink and use it to simply switch off power to the sticks.

Happy New Year folks!
Phil's 2022 thread starts here 
Thread now locked

NiceHash requires a miner to use the stratum #XNSUB extension -- they use it to allow the miner to seamlessly change what it is working on w/o requiring a reboot or letting you know that it is changing work. If that was all that #xnsub could do, fine. Problem is that #xnsub can allow a plethora of other operations to take place and THAT is a huge security hole. The fact that it is security risk is why Canaan rightly does not support it.

It is the old scenario of mining - during the various gold rushes yes *some* miners got rich but many more if not most at best broke even. However, the folks making & selling shovels, pans and sluices made a fortune by supplying the tools.

Same thing applies here. By now only concentrating on selling miners Bitmain has divorced itself from the effects of what all that hardware will do to diff.

The PSU(s) *should have* been the only thing damaged but - thing is, like all other miners from its day it uses banks of PCIe plugs to supply power and what kind of PSU was used matters a lot. Could be anything from a 'real' PC PSU to something using the HP common-slot style or even old IBM server PSU's. In short - we need more info as to what setup was used.

The only thing I can think of that would take out the PMU's and even hash boards would be if multiple PSU's were feeding each miner or multiple PSU's feeding multiple miners but incorrectly wired.

  Key point is that preferably each miner is powered by 1 PSU feeding both PMU's on a miner. If using 2 small PSU's, only connect 1 PSU per PMU -- the PSU's cannot be connected together!
  That leads to using multiple PSU's tied willy-nilly to multiple miners. I've seen folks who simply used all the PCIe plugs on a large PSU to feed a bank of miners and just connect the next PSU to a miner when they ran out of plugs - in short - they ended up having some PSU's running in parallel on a couple miners and yes they fried a couple PMU's in the process...

I highly doubt a simple 'drop-in' replacement is possible. Looking at older chips data sheets it is obvious that Bitmain plays around with different timing specs for the internal circuits - none of them are the same. Since BM no longer releases the data sheets Sidehack had to manually debug the signals/commands and timing for the 1397 and then supplied that info to Kano to work into the driver.

For 16nm and larger node sizes, sure. The lithography equipment needed is very mature and along with a fairly large number of Foundries doing non-cutting edge node sizes, very available and so the cost for masks is fairly low. Go down to 10nm, things are a bit more pricey but still basically use very similar litho tech that 16nm use.

Fact: For (mainland) Chinese-owned Foundries 12-10nm is as low as they go because they cannot buy the needed EUV litho equipment & photo resists much less produce it themselves.

5nm is a whole different animal that requires using EUV lithography. EUV litho gear is extraordinarily expensive and certainly not widespread -- you can literally count on 1 hand the number of Foundries using it. Chips using that node are high-value and high demand. There is no sneaking in a few test circuits per wafer because masks are just too freaking expensive and foundry customers simply will not permit 'other chips' to be produced on their production wafers.

By today's standards - hell, even going back to what the 28nm ASIC's from 2014 could do -- FPGA's are just too power hungry and too slow to be viable (profitable) for mining BTC. As a 'can you do it for the heck of it' experiment, sure they will work.

There are those here who back-in-the-days cut their teeth mining BTC using FPGA's and if they were the slightest bit viable they would still be talking about using them. Sad fact is aside from being programmable, no matter what a FPGA s used for be it mining, video or other image processing, etc., by any type of measure they simply cannot compete against purpose-designed ASIC's when it comes to throughput, power efficiency and low cost.

Thank ye very much though I wouldn't call it much of a 'job'.
Aside from a very occasional 'ehem' to the few times things began to wander too much outside what this area of the Forum is supposed to be about I dinna have to really moderate much less delete a single message. I'm rather amazed that there was never even a single random OT or spam ad post.  

I do have to agree that some inclusion of alts has to be allowed here because the more general areas of the Forum are a morass of, well, everything - where discussions are quickly buried and/or ran off track - but I kept it limited because that is also the 'thin edge of the wedge' so to speak.

Actually the correct link to the 2022 thread is https://bitcointalk.org/index.php?topic=5378628.0 

nope. Unless you are running a lot of sticks on 1 USB port the lower bandwidth of 2.0 is not an issue.