Topic: Swedish ASIC miner company kncminer.com - page 365. (Read 3050076 times)

I thought that the Neptune was supposed to be a 4 chip because they said they will use the same Jupiter case/model.

Yep! I stand by my theory that Neptune was supposed to be 6 chips. But some cheap bastard named Sam made an executive decision to save a few dollars when they discovered that the 5 chips could be overclocked to reach 3THs. Nevermind mind that the board components are near spontaneous combustion temps.

No need to wonder why the warranty period is 3 months now.

Fuck this

The only reason I didn't refund my $10k was both cloud hashing and the second Neptunes.

If this is true! Cancel my cloud hashing!

I regret not refunding, I'll never make my money back at this point.

I don´t think so, but they might be underclockable to reach 20% better power efficiency.

The ones sent to customers are simply overclocked to reach the advertised 3TH.

Look at those temperatures 

I said that the temp monitoring components were far away from the chip because KNC probably knew there would be overheating issues.

https://bitcointalk.org/index.php?topic=170332.msg7181832;topicseen#msg7181832

Anyone who shot me down when I said that, please feel free to eat your words! 

I expect these are first customer appreciation batch boards and designed with that purpose in mind.

I'm sure the ones heading to boden will be a much better design

It is exactly the same VRMs as Ericsson BMR464 series 50 Ampere.

I wonder, since this setup needs more power how could they use the same number of Vrm modules ( 8 of them) as the Jup boards?

Jup were designed for 170W , with 8x vrms, handling each approximately 22W.

Now with a stock Nep card, it uses around 36-37W each vrm ?

Is it only the metal plate+thermal pad for saving the extra vrms?

No space for overclocking.

I think the erricson vrm are different then on the november batch. "I hope!!!", because the specs for the nov errics are:

max 40 amp and max 125 degree C.

If the vrm are the same, then they are running out of the specs.


And No, there are not many space for overclocking. Problem the vrm and it temp.


Aaaannd, thx Elenelen

If they burst into flames KfC will blame it on shipping or the customer mishandling their duct taped, poorly designed, cheap component crap.

I feel screwed when I know that KnC's "hash while you wait" means forfeiting "Neptune two-for-one"!

KnC announced "hash while you wait" on April 8, saying first batch customers will start their cloud mining from early June and the last customer will hash in their data center around the last week of June. Now this is close to the end of June, and finally the Plan B arrived.

On April 28, KnC announced that "KnCMiner, the most trusted brand in Bitcoin mining, announced today that it will give every current customer who has an outstanding order for a machine from its Neptune line’s first two batches a free Neptune from its upcoming “third batch” of Neptunes."  I felt happy when KnC announced this, because it shows KnC at least tries to bring more profits to the customers (although, in fact, two Neptune still cannot reach ROI). To my understanding, this is a bonus/gift/giveaway from KnC, it has nothing to do with the compensation due to delay of delivery.

In the email I receved from KnC two days ago, I am notified to choose either "hash while you wait" or "switch to Titan". There was no terms saying that by select any of the options, the "neptune two-for-one" plan will no longer be valid. I read their T&C (convert.kncminer.com/terms/), the two options they offered has nothing to do with the two-for-one plan, therefore I signed up "hash while you wait", happily waiting for the cloud mining next week, first Neptune by the end of June, and second one in August.

Then I read the forum discussion, and I know that KnC actually use "hash while you wait" in replace of "neptune two-for-one"! I feel totally cheated and pissed off! How come KnC breaks their public promises, and deprive my rights by just giving some vague and ambiguous terms and conditions?

I use the online calculator for some maths: https://bitcoinwisdom.com/bitcoin/calculator. (I set the difficulty increase 20%, power consumption 2.1kW, the rest parameters are with default values)

I spent 12999 USD on 3TH Neptune. With current difficulty, even if I start mining today, I can mine up to 6BTC before electricity fee exceeds the income. Suppose bitcoin price is 600USD, I can get back 3600 USD. There is still a gap of 9399USD!

If I receive a second neptune by Aug 31 (earliest estimated delivery date), then before electricity bill wins, I can mine up to 8.4 BTC together with the first neptune. This is about 5040USD in total. And the gap is still 7959USD!

"hash while you wait" has a max period of 45 days. Suppose I don't receive my neptune and therefore I use up all the cloud mining time, then I can get around 3.8BTC, equivalent to 2280USD. Of course, if KnC ships my first Neptune by end of June, then I only get 0.8-0.9 BTC while waiting...

So, even if I have both "hash while you wait" and "neptune 2-for-1", I can get maximum $(5040+2280)=$7320. The gap is $5679.

If I only have "hash while you wait" and one neptune, then revenue is $(3600+2280)=$5880, gap is $7119!

Now I can buy a 1TH miner for about 1500-1700 USD(e.g. http://www.lketc.com/goods/show-172.aspx  the dragon miner, one of the well-known mining rigs in China), and such mining rig is in stock and can be delivered in 2-3 days. With 12999 USD, I can buy up to 7-8 TH mining power! This is far more than 6TB that KnC can provide.

KnC said Neptune is to be delivered in Q1/Q2, and they make customers believe it refers to March/early April. Now it is the very end of Q2, and I feel disappointed.

KnC said the "hash while you wait" will be started in early June, and it is delayed, and I feel disappointed.

Now KnC will revoke their promises of give away a second Neptune, I am totally pissed!

Thanks Elenelen, this is good news that they are quiet, I was hoping they would be similar to Jupiter. I plan to run my Neppy at home to help with heating (it is winter now in the southern hemisphere).

The metal plate is about 36 C in front of the Fan, and about 46 C on the backside of the box

It's this one: http://www.newegg.com/Product/Product.aspx?Item=N82E16835345069

Looks OK to me.

Those temps are freaky high.
What type of fans are used for the miner?
Brand, size and CFM.
You better modified those box with extra heatsink at the outside before you do a overclock.
That GREEDY SAM not COOL anymore save less than 1 yuan for a connector.

Ran them 17 hours. Stable on 3.3 Ths  (but between the first 5 min and about 2 hours, it's very jumpy and gives many "Failed to setwork" errors, for some reason this becomes much better when running it longer (then no errors any more) >> so some FW tweaks are still needed).

Are the 5 boxes all running stable? Or is it another RMA situation?

final hashing speed with 5 boxes running?

Yes: already ordered extra connectors

Yes indeed, I saw some of them at 106 C.  I noticed as well that the aluminum plate isn't touching all the VRM's with the same pressure. Especially the one's at the end of the U-shape (at the out-flow side): some might have a small space of air (the DC/DC numbers 0 and 1 have significant higher temps).   I'm thinking, to add extra Fans on both sides blowing below the aluminum plate.

You'd better find a way to solder on another power connector before you try overclocking. You'll fry your cables and connectors.