Thanks for this, I noticed this as well even with my 741s, though it wasn't as extreme.
I even kept the PSU at 25C by building a mini insulated AC rack out of Rigid Insulation, air filters and a portable AC unit.
The S9 and S7 don't seem to have this issue, which seems to make the A841 more efficient in lower temperatures only.
Once summer gets closer, this will most likely be a hot issue.


Was curious about this as well.  There hasn't been a single post in the Blokforge thread since the 21st and Minerwarez since March.
I miss being able to buy from and recommend Canaan over Bitmain, so hopefully this can be resolved soon.

It is hit and miss with them.
I have had a ticket open for several days now for a pretty decent withdraw that never actually sent.
It's no longer in my account, never received it on the other side, and the transaction ID is invalid.

However, given the bar being low for crypto exchanges, they aren't the worst and were amazing up until recently.

I was about to purchase an 841 and noticed it said 30C on the website, and did a double take on the Canaan website to verify that indeed it is now 30C instead of 40C.
Checked the 821 which I knew 100% was 40C just a few days ago as I was showing it to a friend, and that too is now listed at 30C.
Posted about it on Blokforge's forum post, but it was deleted.  Was honestly just curious about it before buying more from them but now they are not within range for myself or any business friends.

In regards to proven record of shipping, MinerWarez held onto numerous paid orders after delays, and then held onto refunds as well until the price tumbled several thousand.
https://bitcointalk.org/index.php?topic=2277516.120

I personally haven't had any issues with Blokforge, they even gave out a coupon to all their customers recently, but they and Canaan did just lower the acceptable operating temperature range from 40C to 30C without any notification, explanation or email.
https://bitcointalk.org/index.php?topic=2616205.280

I have ordered via Amazon from CryptoCrane for many years and haven't had any issues, though you will pay a slight premium over ordering direct.


Thanks HagssFIN, I didn't know about ASICPuppy or Deep In The Mines

Since it's a product they sell on their site, and they also changed their specifications, I couldn't see how it's off topic.
I am a paying customer of theirs, and Canaan as well since the Avalon 6.
I also wrote up several positive reviews as they are still working as advertised, and several business affiliates have purchased based on my recommendation.
It's a question about a product they are selling, and they are in the business of selling said products.
It will also affect all of their customers except for those in very cold locations year round so it needs to be addressed before end of Spring I would think or thousands of miners will be running well out of their new safe operating range.

I remember the 841 had 35C at one point listed, while the 821 had 40C listed, which makes sense as it is the same cooling system but less power.
I purposely chose the 821 over the 841 given this specification on their website.  At this point I would have been better off going with the S9, especially at the current price and previous pricing.

Both the 741 and 721 were rated at 40C as well https://blokforge.com/product/avalon-741/
However to drop all 8xx to 30C without notice after stating 40C, is unprecedented in the ASIC community as far as I know.

Wow, that is sad that they deleted my post.
At least it wasn't a shadow delete, as I can see it missing now.
I guess an official reseller of Canaan deemed my post, which is pointing out a possible fire hazard to clients, as off-topic and needs to be deleted.
I've worked at datacenters for over a decade, and if anything widely used changed from 40C to 30C, it would be something that needs to be addressed publicly and quickly.
30C even in active cooling situations could be near impossible in the case of running on backup power; however realistically most mining farms are passively cooled and 30C is only possible 365 days a year in very select locations.
Also, this change was done on Blokforge's website as well without any email notification, so it is indeed on topic.  
I already cut all business ties over Minerwarez, and wasn't alone when I left with several other known BCT members as well as personal recommendations I had made due to shady business https://bitcointalk.org/index.php?topic=2277516.140
This squelching has left me with no option for purchasing from Canaan or recommending them.

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A reply of yours, quoted below, was deleted by a Bitcoin Forum moderator. Posts are most frequently deleted because they are off-topic, though they can also be deleted for other reasons. In the future, please avoid posting things that need to be deleted.

Quote
I noticed on both the Canaan website and Blokforge that the heat ranges have been lowered by 10 degrees Celsius.
It use to be 40, and now it is 30.
https://bitcointalk.org/index.php?topic=2616205.0
I didn't get an email about this, and this much of a change would put several miners and farms out of range for this.  Usually that would result in a recall or notification as the norm has been 40C for most miners up until now.

I haven't had any issues since, so whatever they did fixed everything for me at least.
Anyone else?

In my experience, yes.
Not to say the T9+ is super reliable, but more that the S9 is very unreliable, especially ever since autotune.

Thanks NotFuzzyWarm! I always like your posts on here.
The thread seems to be off limits to me now?

Thank you for the coupon in the email!

I am a bit out of the loop on this, read the first two thousand or so pages around a year ago.

I had a class action lawsuit email for Cryptsy as I was affected, but I never received one for my GAW and my Scrypt hosted miners where I controlled the pool, to a "100% uptime" miner that I couldn't control the pool for, to a hashlet, to thin air.
What should I be doing?

It took 10 days but the deposit issue seems to be resolved.
Thank you once again Hashnest, sorry but with all the previous virtual miners falling outs, can't help but be a bit on edge after several days of deposits not being credited.
They always come through, which is better than I can say for every other cloud mining service.

There are some reviewers mentioning a way to get them to run around the same noise as a 741, but personally I am waiting for an official solution as theirs requires increasing the target temperature and lowering voltage via CLI and not the GUI.

Just wanted to report I got my 821 order without any issues and it works better than advertised.
Thanks Canaan and Blokforge.
I don't think I see a coupon though, where would those be if I had one?

Just an update, over 1 BTC has been deposited among 3 different traders and none have received a deposit in their hashnest account.
Been over a week now.
Anyone else having this issue on here?

asicboost.com
I am seeing a few news sites picking this up, but nothing I personally trust.
Anyone have more information on it?

From what I can tell, covert asicboost is now invalid, but overt asicboost works, but only for companies that give away their patents.
Not sure if it's related to the huge price drop, or if that's from the Whales dumping in Japan and at the Auction

Anyone happen to have an idea of why the price of hashnest miners is dropping at such a fast rate?
It started diving around Feb 25th and has yet to recover for S9, Feb 13th for L3+

Same issue here, I thought it was perhaps my bitcoin wallet, but even after updating, deposits are not showing up.
No response to ticket after 48 hours as well.
I would deposit with caution on Hashnest at this time.

That's true, I have yet to have them not fix an issue in a timely manner.
With crypto though, it's always suspenseful.
I myself am not up to speed on bech32 even after researching it, what exactly do I need to do to prevent this from happening beyond upgrading my install to 16.0 ?

I sent a payment from an old 15.1 wallet, and it never showed up on here.  I have a support ticket open about it for a day so far with no response.