Topic: Swedish ASIC miner company kncminer.com - page 734. (Read 3050074 times)

It'll need to exchange at a specific rate as well, at least as fast as it heats up.


Where are you getting your power specs to see that they're 3x more efficient than a Neptune? or did I mis-read you.

It's not bold at all. Almost everything that runs off 110 will run off 220 or 240v with the correct PSU. He's smart, as 220-240v is more efficient and he will be able to handle more Neptunes. You obviously don't have a firm grip on household electricity yet.

Unless you have a 6,000sq ft house I would expect that you're going to need some HVAC/open windows immediately upon receiving those. The most I can handle is about 8,000 watts in my house in the winter without it getting crazy hot (my house is 3200sq ft). I have a seperate building where my datacenter is to house excess machines that has plenty of cooling, but during the winter I don't keep more than 8kw of machinery in the house. Come end of Feb/March, I move everything into the climate controlled center.

please can you tell the settings for this?

thank you!

Agreed. Also, Antminers ship immediately, are the same price as the 220GH/s Avalon units, and use ~3 times less power per GH.

Personally, I won't touch anything with the tarnished Avalon name on it after the bulk chip fiasco.

I'm the last person to point out power usage vs hashing for this current phase of mining, but I have to say that sounds like a total mess on the monthly expense chart for 3Th

Yeah, I've got 14 x 220GH/s miners that eat 1kw each arriving soon. They come with 220v power supplies that would probably work on 120v outlets, but I don't want to risk it. I'm expecting them to heat my house (I'm in Michigan) until spring, but I'll probably have to get some ventilation as soon as it starts getting above freezing.

several things... bought 6.9, yet my average hash on the pool is/was 3.2 over the night, and the btc balance is less than when i shut down last night. dont know why.... looks as if some of the fees are more than earned. Im out of that mess now as soon as they let me withdraw. I was almost ready to drop some serious coin on it. anyone having success there?

What do you mean?
What happened?

I agree, bold.   Here we typically wire a 220v home dryer with 3 wire.  Three wire is a black, a red, a white, and an uninsulated ground conductor so 3 wire actually has 4 conductors.  In a 220v application like a dryer the current is flowing between the red and the black, not so much the neutral.  This means that if you split the 220 into two 115v lines, both returns will be on the single white.  While if you were to run two 12-2 (12 gauge white, black and an uninsulated ground) you'd have two white 12 gauge neutrals to return the current.  You should know that 12-2 only comes in black, white and uninsulated ground so even tho a strip vertical of circuit breakers in a service will alternate between L1 and L2, they will both have black hot leads.  The only time you'll see the red is for a 220vac application.  So, you can take a long 115vac extension cord and go around with that to other outlets and measure between the top right (hot) to top right and find some where hot to hot will measure 230vac while other hot to hot will measure 0v.

You might also see the red in a 14-3 when dual switches are used in a room when the overhead might be switched from either switch.

The original point being (before edit revisions) that if you need the 115vac to run the Neptune for some reason, you'd be able to split the L1 and L2 (from a 12-3), each to a neutral, giving 115vac on each but the neutral will be carrying current from both - a serious limitation.

Edit: It's been many years since I wired homes and I only have this mobile home to go by now but perhaps dryers 220v is simply the red and black (and ground) while not having a neutral but I don't ever recall seeing such a cable - like down here where they figure nobody with any smarts would live in a mobile home they sometimes use the neutral white for the red.

May I ask this is for how many of which miners?

Yes, ambient temps are slightly higher in garage as it's a tin roof, but haven't measured it yet. 
When I had them running in my small office and outside temp was 35C, inside office reach as high as 45C

hashing is never changes from day temp max 44C and night temps (min) can be from 23C to 28C. 

jup 1 - 560 GH/s HW errors 0.66%  (560W Cooler Master V850 Gold)
jup 2 - 556 GH/s HW errors 2.0%    (570W Cooler Master V1000 Gold)
jup 3 - 557.5 GH/s HW errors 0.7%  (590W Silver Stone ST1500 Silver)

BTW, I'm running firmware version 0.95 just because most efficient in power consumption. 
Tried other newer firmwares and seen no advantages, but uses 10-15% more watts.

well, I hope the Neptunes are 220 for your sake.... lol  bold...doing that without knowing...

30 amps at 240v is 7kW. Six of them would be 43kW.  That's 40 btu per second - or 146,722 btu per hour.

A 'low end' window AC isn't going to do much.

You just need a lot of ventilation - replace hot air with air from outside, as long as it's less then 70C outside you'll be fine.

What does 44C ambient (I assume your garage is even hotter than outside from the Jupiters) do to the hashing level?   Have you lost GH/s?

When retail sales of hardware "level off" and it is no longer viable for John Q Public to buy bitcoin miners, the retailers will build them for themselves and mine themselves as long as the price of BTC keeps going up.

So sir, CES is over, you are back to work, do you have any news of any kind for your loyal customers?

When sending the system to them they say to use $1K of insurance. They wouldn't tell you a lesser amount than what their cost is, which is what I'm basing my guesstimate on. It also makes sense as many of the components are common, the casing is stamped aluminum, the fans are dirt cheap, etc..

I agree, my original comment was referring to the fact it becomes less possible to maintain the disruptive increases as the amount of powerful hardware required becomes substantially more each time. Either the volume of that hardware continues to gather momentum, or the significance in incremental difficulty increase drops.

The moment KnC launched the first step down to the 28nm node it was such a significant leap forward it was able to triple the cumulative network hashrate in a month. The second batch did not have that effect. Right now neither will anybody else's release, however the frequency by which we are expecting new competition to arrive is on the up, not least because many have been delayed to the same(ish) period of time.

I do however wholeheartedly agree, and always have believed that profit margins will be squeezed to such a point by which the returns are close to the costs paid for electricity, as they were with GPUs. Fact is this a low maintenance means of autonomous reward. Brain power aside the initial tech savvy hurdle isn't huge. Not in the same realms of innovating Bitcoins adoption by public where the rewards for those that succeed in that are huge.

Mining just rewards the early adopters willing to take the risk in supporting the idea of a non centralised payment means, and hopefully eventually, a non centralised currency...

It will level up when price of electricity spent on the miners equals the price of BTC mined. There's no economic sense to stop before that moment, and people will keep adding the GHs to the network.

It will level off eventually, but not for a good few months yet.