@Blokforge
I got my 841 today, but all I got inside was a cable. No present and no Auc3. Am I missing something or do I have to buy an auc3 too? Canaan is really nickel and diming us if they took away the aucs from the miners. They came with the 741s. I know the avalons are suppose to be more reliable, but having to buy controllers and aucs pushes the pricing on the 841s to double the price of the available S9s.

Bitmain could be trying to crush the competition as their miners are now much cheaper than all the other miner manufacturers and the efficiency is about same as all the others have caught up.

Obviously, people are not rushing to buy bitcoin miners anymore. As there are loads available everywhere you look. If Canaan isn't competing with their distributors, then why are they listing the bulk orders below blokforge's pricing? They also list a single quantity, tho it's out of stock. Why even do that if they don't want to sell directly to the public?

Canaan is competing with their distributors and Bitmain.They just dropped the price of the 841 down to $1625. Looks like you are right, the people rushing to buy earlier are going to end up paying more and getting it at the same time as the late buyers. If you're able to buy 20 from Canaan right now, you'll get them before the distributors. It's a 3 week wait for everyone else. Looks like Bitmain may drop their prices again too with this move by Canaan.

Wow, so many S9s for sale everywhere! So many miners for sale from the handful of manufacturers too. If you bought a month or a week ago, you got screwed as they are all starting to drop their prices back down to where they were 6 months ago. Bitmain been dropping theirs every few weeks now. And they have so many miners available at different price points too.

Pangolinminer sent me an email tonight saying my miner was delivered, but I never received it. They never sent me an email on when it was shipping out either. I checked the DHL tracking and it said the miner was signed for and delivered today. Guess I have to call DHL tomorrow and find out where they actually delivered it to.
Now the M3s are being sold for a lot less with immediate delivery too. I shouldn't have bought it for $1600 in Jan. As I will never break even on it now as i don't have free power. I got too caught up in the mining craze in Jan. with no miners available then. Now every manufacturer has them available and they aren't flying off the shelves because BTC keeps going lower while the manufacturers have raised their prices 50% to 100+%.

BTC being down is beside the point. He paid $3600 for an 821 and it hasn't arrived yet. When it finally does in a month, he realizes he's never going to break even on it as difficulty will be even higher by then and will continue going higher. At least if he bought BTC outright, he doesn't lose anything as long as he holds it until BTC comes back. Whereas the 821 miner will lose value day by day as it earns less & less until it becomes obsolete. And to make matters worse, Canaan is shipping out the new 841s the same time as the 821s and at a lower price. He can't even sell his 821 at a 50% loss as who would buy it when there's a more efficient 841 on the market.

Lol, I remember when the oil shippers made tons of money and also when they went belly up and lost it all. Too much overcapacity is right. The comparison of shippers to miners is appropriate. And there's a lot more capacity coming online this year so profit will be declining in BTC mining as profit declined for the shippers! Anyone paying over 2k for a 13TH miner now will probably never break even!

Looks like some people didn't finish 5th grade?
Math problem:

2000-X=800
X=1200 (loss for reseller)

An S9 currently generates About $11 per day before power & pool fees. That's not enough to pay the rent in the USA. And if you need cash on a monthly basis to pay the rent, spending $2600 upfront for $11 per day isn't the way to go.

People mining for the last 5 years made a killing because difficulty was low and price was low. So they got more bitcoins even though price was low. Now price is high ($10k vs. below $800 back then) and difficulty even higher. The whole premise behind mining is to accumulate more bitcoins as bitcoin pricing was just secondary to mining. But now you get less and less bitcoins everyday and that's going to continue. If you spend $2600 to get an S9 + PSU running, it's going to take a full year to make 0.41 BTC (2 weeks ago it was 0.47). If you spend the $2600 and buy the BTC instead of the miner, you'll have about 0.25 BTC now. If you mine with the S9 it's going to take over 7.4 months as of TODAY. Depending on the difficulty increases, it's going to take even longer than the projected 7.4 months as the calculator assumes no difficulty increases.

What a joke on us since we can only use 1 coupon per order! The coupon's not even enough to cover the shipping costs from bitmain. Pangolin has a flat $100 shipping for their miners so I don't see why bitmain can't do that.

Even if bitmain has something new coming, it's not going to affect ROI as much as difficulty increases. With all the new miners coming online in March and later this year, difficulty is going to the moon while BTC price is stagnating. I already see it in my mining. Anyone buying S9s now at $2320 may never break even anymore. Especially if difficulty doubles every 3 months like it did the last 3 months.

A friend charting bitcoin thinks it will reach 20k and then drop down before going to 100k. I think that is too optimistic a price for bitcoin. Everyone who bought higher will be selling as bitcoin goes up so that will keep the price from moving up quickly like last year! Also, since mining difficulty is doubling every 3 months now & the price isn't following difficulty up, the big mining farms will be selling bitcoin to pay for expenses. This will keep prices in check too. But once bitcoin breaks above 20k and stays above that, it can go higher as no holders above 20k. But there will be some selling above 20k from people who bought lower or from traders.

I read the article. And it's 13% per month difficulty is way off. The article stated difficulty doubling every 5-6 months. But in actuality, it more than doubled in under 3 months! I used the mining calculators in the last week of Nov. 2017. I took a snapshot of how much bitcoin an S9 makes and it was only 0.92 bitcoin back then. Today an S9 only makes 0.43 bitcoins. Regardless of the price of bitcoin, that's more than a 50% drop in under 3 months. If this continues an S9 won't make much bitcoins, but it can still be profitable if the price of bitcoin moves up exponentially. If the price stagnates, you can forget about making a profit even with so called "free electricity". If difficulty continues to shoot up exponentially, bitcoin mining will go the way of dash mining! So all cryptos designed this way will become unprofitable to mine eventually, once difficulty gets high enough.

No one is snapping up the S9s because difficulty has increased so much & is continuing to increase daily, that the S9s no longer mine much bitcoin in a year. In Nov. an S9 was mining about 1 bitcoin regardless of price. Fast forward 3 months and an S9 mines less than 0.5 bitcoin. Right now bitcoin is having a tough time breaking above $9000 and may end up going back below $8000. So paying $2320 for an S9 now is a big risk with so much going against bitcoin. Also, there are hundreds of S9s and huge lots being sold on eBay now vs. a month ago.

It would be a big risk on Bitmain's part if story is true as ethereum is suppose to go proof of stake sometime this year. And whoever buys it is taking a huge risk too.

I guess you can get away with the 1200w PSU when you underclock the 741s. I run mine at 0 or 1 and I'm hitting 1300w on my apw5.

Either keep searching for a hash board replacement or just live with it. You should be drawing less power so it's like owning an 8TH miner instead of 12TH. The power density should be the same. It will just take you longer to breakeven.

Bitmain does the same; won't give any warranty to 3rd party sellers of their miners. Everyone taking a chance buying from eBay or reseller that the miner won't breakdown. Or else they hope the manufacturer will honor the warranty. They will not! So buyer beware!