Main problem with AMD on LINUX is that the drivers are still in a very primitive state and don't seem to work real well a lot of the time, and are a MAJOR pain to try to configure for reduced power usage.

Doesn't seem to matter, I've been using motor oil for a couple decades or close and it all works well.
Keep in mind that this is a short-term solution in any case, since the seal(s) is(are) shot and the oil isn't going to stay there for long.
I'm not sure how straight 30 weight would work, I normally use 5w-30 10w-40 or 5w-40 in my vehicles so that's what I have around.

Probably the Antminer L1 - that never achieved production, though Bitmain seems to have built some prototypes.
Entirely likely ALL of those got trashed at some point, or rebuilt into prototypes for some other later unit.

Doubt that will happen anytime in the next 2-3 years and DEFINITELY not in the next year (barring a major Bitcoin collapse well below the $2000 level) with their S11 in the $500 range as the new bottom-end of the line and the T15 still offering higher efficiency AND higher hashrate than the S11.

The way things look right now in the semiconductor industry, I don't expect a real "new node" past the current 7/10 nm node for at least 4 more years to reach "production" status, and it MIGHT take a lot longer than that given some of the commentary out of IBM and Intel and Intel's major issues getting their 10nm process to work well.

Quantum effects have been a noticeable issue in superconductors for a couple decades now (NOT counting Tunnel Diodes that were specifically engineered to take advantage of Quantum Effects) and it's been getting worse every new "node" generation on an exponential basis.

As long as you don't produce MORE power than you use over the course of a billing period.

Bitmain finally closing out their firesale on their obsolete 28nm gear but haven't had the chance to ramp up production on most of the 14nm replacements yet due to their push to get S15/T15 units sold so they can meet their bills with current cashflow.

Anyone else notice this new "S11" unit - looks like the same chips as the S15/T15 but set to run at a slightly higher voltage per chip than the T15 giving lower efficiency, and a few less chips for lower hashrate.
Makes me wonder if there's going to be a "S13" sitting between this one and the T15 eventually.

Tahiti cards are old enough and power hogs enough they're not going to make much of anything on ANYTHING, even with a good miner.
Hawaii have been VERY marginal the last month at best, even where THEY have good miners,Tahiti are the same node and generation as Hawaii but one largish step lower on performance.

Bitmain has offered cloud mining for years intermittently.

No, I'm losing money if my income from mining is less than what I have to pay to do the mining.
You are confusing "investment" and "mining" - and I don't have the LUXURY of just hanging onto my mined cryptocoin as an investment, I have bills to pay and no other income source to pay them with.

For most of us, mining has ALWAYS been about profits.
The majority of miners (and probably the LARGE majority of us) can't AFFORD to mine if we're LOSING MONEY at it.

I'm still not seeing any significant Craigslist entries for GPUs here - but given the "local" Cragslist includes Chelan and Douglas counties, I suspect the "locals" are mostly still mining profitably.
I DO see some "parting out rigs" listings for the Spokane area though - but not many of them.

ASIC listings are almost all for older rigs, like the S7, on the rare occasions they pop up at all.
The only D3 listing is my own, 20/20 hindsight I should have bought a Z9 Mini instead of that trio of D3s. but "at the time" it made sense as Zcash was still muttering about "change algorithm kill ASICs".



Can't tell from the pictures which version that is - but definitely ONE of the "miner specific" versions.
Some of the pictures are from the earlier "DVI only" others are from the "no vid connnector at all" version which has marginally better cooling.

Either way, great price on solid cards - the Riser is SATA only though so not really a help IMO.

I hope you mean ETHhash, where the R9-290 is still profitable (barely) if you have SUPER CHEAP electric.
They have never been a good choice for Equihash, and with ASIC units widespread on equihash NOTHING GPU is profitable any more unless your electric is FREE.

It's already started - Bitcoin hashrate/difficulty has dropped about 20% in the last 5 weeks.
Part of that is probably Jihan Wu / Bitmain shifting their farm hashrate around for his "War on BCH-SV" - but it's been pretty steady since about the first of November and is STILL happening.

At this point, I refuse to even CONSIDER buying anything from Bitmain again - Wu's actions have been the primary cause of the current market collapse and have hurt ALL MINERS out of self-centered ego and greed, and I refuse to support someone like that in ANY way shape or form in the future.
Let Jihan Wu and Bitmain ROT - they seem to be having some major cash flow issues of late and they DESERVE to go bankrupt - and seem to be heading that way already at least in part DUE to their own actions that have killed profitability.

As of right now, an S9 is still profitable mining Bitcoin - BARELY - at a power cost of less then 0.074 per KWH.
That would be closer to 0.06 but Bitcoin has shown a significant DROP in hashrate and difficulty through November and early December - close to 20% over the last 5 weeks.
Gotta wonder how long the current pricing being SO depressed is going to take before a serious number of "new miners" from the last year-and-a-half give up and shut down/sell their rigs.

Profitability TODAY is a lot lower for pretty much ANY coin than it has been in the last 3 years (exceptions are pretty much ALL "haven't existed that long" coins like ZEC).

Thank Jihan Wu for CRATERING the markets with his "war on BCH-SV" and cashflow issues with Bitmain - and IMO Bitmain should be BOYCOTTED because of the garbage they've pulled this past month-and-change on miners in general.
I plan to never buy a Bitmain product ever again - this garbage was the final straw.

In theory, the "trade war" truce should drop this back down to the previous 2.6%, but it's still up-in-the-air on when and somewhat iffy on if it will actually happen.

At this point though, given Jihan Wu's antics and the resulting COLLAPSE of Bitcoin (and almost all Altcoin) pricing and mining profitability, I wouldn't buy a Bitmain product if it was FREE and shipping was FREE.
LET HIM ROT.

S15/T15 was released a week or two back on the Bitmain website.
Like the S9, they can ONLY work on the SHA256 algorithm, so much less flexable than a GPU-based rig but HUGELY more capable on SHA256.

Vega was not an efficient option on ETH mining (where most 4xx/5xx cards are used), fairly low hashrate vs quite high power consumption.
It DID shine on the original Cryptonight algorithm, once the drivers got fixed for large page support - but that was about the ONLY bright spot for it.

MicroSD is capable of at least 512 GB, and potentially up to 2TB in the spec.

Should be plenty to handle a full node for a buncha years.

Yes, and both the 3-fan AND 2-fan versions - though the 3-fan ones seem to die faster.
I haven't had ALL of them die yet - but it's mighty close, think the only one I still have running is the 1080ti (which was the last or one of the last Gigabyte cards I ever bought).

Better than the ITX 1070 cards have turned out to be though - I've had 4 out of 5 of those COMPLETELY die at this point, even though the fan was still working.

The Aorus cards are still working fine, but those are ball-bearing and SHOULD last a long time.

The EVGA G2 line (and the G2L line) are good reliable units. I've got a few of them, they're not my #1 preference (the 850 in specific has fewer connections that are usable than the Seasonic X850 or SS860 do) but the reliability has been 100% for the ones I do own (I've had ONE X-series Seasonic die, but that's out of quite a few MORE of them and it was replaced promptly by Newegg under warrenttee).

I don't have a lot of Silverstone power supplies, but never had any of those die either - the ones I do have are all "specialty" small level stuff for small-form-factor cases (one SFX and a few TFX).