Topic: Swedish ASIC miner company kncminer.com - page 287. (Read 3049515 times)

This is nice:

The 24-pin ATX and all EPS and PCIe connectors use 16AWG gauges for lower voltage drops. All others utilize 18AWG wires.

I've got my Neptune working with a 1200i for 2 cubes and a 1500i for 3 cubes. I added another header to PCB and running 2 cables per cube. I will post some pictures when I get a chance. I didn't have to raise the cover on my mod... like I saw some others on here did.

Truth, isn't it? From what I've seen they don't compete with the price per performance of the Titan's but a bird in hand.


Oh well, maybe KFC will surprise us and redeem themselves. Maybe.

I'd guess your VAC is really 231 @ miner not 220.
You neglected to show ASIC total Watts in pic.
Still good numbers, 3.42T is best possible @ 475.

AND/OR

The current clamps have a % accuracy in their specs.
Worst case is low end and 15A is low end for a typical 200-600A clamp.
Unless you have calibrated yours and know,
go with worst case and add that % to total for safety.

The VRM's have an accuracy spec also.
+ or -  2.5A per VRM @ 1.0 VDC output
(spec is @0-40A, no claim made for 50A conditions on 40A part)
http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT146435&Lang=EN&HighestFree=Y
Bottom of page 7.

So ALL numbers from miner are just ballpark.

If it were linear, 475MHz is 5% below 500MHz.
285W is 5% below 300W, you are (x)W higher ~290.
That is the price for hot VRMs IMneverHO!
Unless the ASIC is more 'efficient' @ 500 than 475.
Stranger things HAVE happened but not often.

Just like the LM75 issue, not perfect status reporting but they run!

YMMV

u27 is right... phoe should measure the REAL voltage on his "220v" circuit before to multiply it for 15.76?A (...) he may find something between 230v-238v if he doesn't get stoned so often...

Cheers!
-akw-

Yeah, our digital equipment isn't as smart as you; did you even bother to look at the pics and screenshots??
 https://bitcointalksearch.org/topic/m.8071091
Yeah yeah, the pool is wrong, the GUI is wrong, and the Kill-o-watt reader is all wrong 'cause you said so.

The Chinese ASIC makers have been dumping SCRYPT ASICS on the market since MAY.  That's right Jelin, you could have bought (and received) a SCRYPT ASIC Miner 2.5 months ago.

hey hey...   that was not necessary.  =)   

You're not lucky, you're failing to measure it correctly.

The chips run 300w or so each stock; how do you think you're getting from 220v AC to 0.7v DC with 220w/<15% total loss? Fairy dust and magic beans?

u27

Well ya this is knc member? They probably just threw it in a big bin with a the rest of the crap that doesn't work...wait 2 weeks so you get screwed outta more downtime while protecting their Dc...Then finally send you another untested unit...got a 50/50 chance it'll work...so you feeling lucky punk? Hehe

I do not think it's KnC. Never heard of any scrypt ASIC competition ?

And this is just the beginning.
Remember the massive increase in Bitcoin's Hashrate last October ?
Can you still spot those 'huge' jumps on a today's chart ?

What's similar when you compare those days with today's Litecoins Network ??


The only difference will be: no massive increase in value afterwards.

What the f.... Happen and scrypt diff is so high?

Someone maybe and knc maybe had already the miners and hashing for his party

New KNC Titanic case design released, with a subliminal message towards their competition (i.e. their customers). Can you spot it?

I wholeheartedly agree.... but It's my brother's house...   I recommended to get them out of that closet, but there's really nowhere else for them he says...   

congrats on getting your cubes back finally

Nice.. One comment on the VRM temps.. 85C is the max temp rating from Ericsson and given that they also get driven 10A above spec from the factory I'd recommend trying to get those temps a bit lower. Not that you plan to run them forever, but 20C over temp and 10A over current might burn them up in a few months. Some look like they are getting close to the destructive limit (125c I think).

General update for those following RMA activity: After weeks of waiting I finally received the two cubes today that I had to RMA. I hope to get them setup tomorrow.. And I hope they work. I was told my "RMA has been fixed," but I put a small X on each of them and the boxes I got back are unmarked. Most likely they are not the cubes I sent them.

Quick timeline, minus several follow ups via email and phone:
7/2 - issue reported with 2 cubes and controller card
7/8 - RMA authorized, shipping label issued
7/8 - RMA dispatched
7/21 - replacement controller card received
7/28 - 2 cubes received

Correct - here's early proof they were full of scam: https://bitcointalksearch.org/topic/m.4472437

https://www.kncminer.com/news/news-98

Translation :
We've ran out of 20nm chips in the middle of July and Batch 1 (13000$) production.
We expect to get more 20nm chips in August and will ship Batch 1 (13000$), Batch 2 (10000$) and Batch 3 (6000$) continuously.
Yes, we said that we will wait 1 month between Batch 2 (10000$) and batch 3 (6000$) but we don't care; as the more we sale, the bigger our mining farm gets.

grrrusually reads slightly better on 3 hour actually
2 Neptunes, so /2......   all our dies work, ALL OF THEM. Totally stock.
No cube has ever been opened, and no alterations on the Advanced page at all.
No PCI plugs are altered in any way. The Corsairs came with 16awg pci cables.
The room they are in is VERY HOT. It's a power closet for solar, and stays 100F in there Without Neptunes at all.
With the neptunes, it's obviously even hotter, and I had to bypass the solar exhaust fan's power leads, and connected it directly to a Corsair pci lead, so it's on all the time instead of just on during the day. It is low cfm, but roof venting is effective. It's a mess in there...
https://www.youtube.com/watch?v=_T2mziEZ42U

They did have dead dies initially, but rebooting one machine at a time fixes that for us.
We also use 220v... coming from 6000watt solar banks     don't know if that matters other than for efficiency...
I'll see if I can get my brother to borrow the kill-o-watt reader again
Even though its connected to solar, we have grid backup(Net Metering)... and even with that, when the house air-con (totally separate circuit) kicks on, it totally wreaks havoc with the Neptunes, and Sometimes causes a cgminer re-start and dead dies. When/if that happens, we re-boot one machine at a time, and all comes back. Don't really know how to remedy this without a totally separate main line. I never would have guessed that the aircon would be able to do that from a separate breaker, especially since the inverters are 6000watt each. sometimes the aircon breaker pops, sometimes it doesn't. It never used to before the Neppies arrived. Not sure if we want to add two more of these when the "Bonus" units ship.
*all the VRM temp readings on the GUI pages are about  95-100+C , while all the asics read to be around 60-70C




...and the 2 Neptune's circuit at the box


15.65 x 220v = 3443 /2 = 1721watts for each Neptune "At the wall"
 pretty close for horseshoes and hand-gernades
3.4+ th/s  each, so 3400/1721 is 1.9+Gh/s per watt or .506 watt/Gh/s  ... "right out of the box"
Now who's "stoned"?  That's figuring at 3.4, and it's actually a bit better, as you see here.
Your 2000 watt .57watt/gh/s sounds like you may have power delivery problems to me, I can't be that "lucky"

Alpha Technologies never will and was never going to deliver a miner. They are a scam 100 %, it was obvious from the beginning.

for people with TITANs on order..   Alpha Technologies has been delayed til September.   Race is on.  https://alpha-t.net/news/development-update-28072014/