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981  Bitcoin / Hardware / Re: 2000W Power Breakout Board (DPS2000BB to PC-Ie x12) on: February 22, 2016, 05:02:13 AM
@VirosaGITS

I spent the beginning of my venture playing with the J4bberwock's.  They were difficult to amass in quantity and given my ambient conditions those boards rose an additional 30+degrees Celsius.

This is what I was seeing at full load for the J4bberwock:
https://i.imgur.com/cvp4xfG.jpg

Versus what I am currently seeing on my unit:
https://i.imgur.com/efWCCMg.jpg?1

Given the lead times and my quick test, I made a lot specifically for myself to eek out a bit of efficiency.  Cheesy


Thanks for humoring me. In depth technicalities is a bit beyond me but i like amassing the general/conceptual knowledge. 100F seem pretty close to body temperature i believe? Thats like 37C? That seem cool to me.

So you mean its a power waste issue? But it would be how much? 2-3watts waste?

 

Well, the issue scales with load.  The power lost in these systems is equivalent to I^2*R.  Where I is the current transferred and R is the resistance of the board.  The resistivity of copper also scales with temperature.  The hotter these boards get, the less efficient they are.

That being said, my concern is always I.  Since I is squared in that power loss relationship, R needs to be as small as possible (Since we can't change I without scaling the system).

-Optim

That make sense, if you ever get some watt waste numbers at different temperature, that could be cool too. I'll stay subbed to the thread.

Cheers, you're new but you seem to know your shit. Welcome (again?) to the forum and thanks for the lesson.
982  Bitcoin / Hardware / Re: 2000W Power Breakout Board (DPS2000BB to PC-Ie x12) on: February 22, 2016, 04:45:33 AM
@VirosaGITS

I spent the beginning of my venture playing with the J4bberwock's.  They were difficult to amass in quantity and given my ambient conditions those boards rose an additional 30+degrees Celsius.

This is what I was seeing at full load for the J4bberwock:
https://i.imgur.com/cvp4xfG.jpg

Versus what I am currently seeing on my unit:
https://i.imgur.com/efWCCMg.jpg?1

Given the lead times and my quick test, I made a lot specifically for myself to eek out a bit of efficiency.  Cheesy


Thanks for humoring me. In depth technicalities is a bit beyond me but i like amassing the general/conceptual knowledge. 100F seem pretty close to body temperature i believe? Thats like 37C? That seem cool to me.

So you mean its a power waste issue? But it would be how much? 2-3watts waste?

 
983  Bitcoin / Hardware / Re: 2000W Power Breakout Board (DPS2000BB to PC-Ie x12) on: February 22, 2016, 04:01:26 AM
Did you miss J4bberwock's stuff or they're the breakout boards you're saying are bad?

https://bitcointalk.org/index.php?topic=738527.0

I find these boards completely dope;
https://ip.bitcointalk.org/?u=http%3A%2F%2Fi62.tinypic.com%2F2zfr9y1.jpg&t=561&c=N5VMULfnofZ1MA

I think one of his versions has volt reading on them or something.
984  Bitcoin / Mining support / Re: Page AntMiner on: February 22, 2016, 02:18:15 AM


Also what is the miner? ... It is fine.


What? o.o;
What is the miner. What is what is it? An S1, S2, S5, etc?

But since you say you're getting the hashrate on the poolside, its most likely you're using the wrong ip. Connect to your router to figure it out.
985  Economy / Computer hardware / Re: Sapphire Radeon R9 390X 8GB GDDR5 DVI-D / HDMI / TRIPLE DP Tri-X OC Version on: February 22, 2016, 02:16:59 AM
no it brand new.and what is your offer?
it has 1  year warranty .

I offered 300$ and you said no. You're not an authorized retailer so how can you transfer the warranty to a 3rd party? The only company i know transfer warranties is EVGA and its for 10 years PSU, you get 3 years instead.
986  Other / Beginners & Help / Re: Best Pool on: February 22, 2016, 01:04:25 AM
GTX 780 + i7

I see. Sorry, you can't mine Bitcoin with that. You really need dedicated and competitive Sha256d ASIC to make anything. If you have free electricity you could look into getting some obsolete Antminer S1's. For 10$ that would be nice and give you a small bit of Hashrate.
987  Bitcoin / Hardware / Re: GekkoScience Compac BM1384 Stickminer Official Support Thread on: February 22, 2016, 12:47:15 AM
I am also a Compac Virgin and have the same problem.  Here are a couple of screenshots.  I did try adjusting the frequency but it did not help. Any help would be appreciated.

http://i1378.photobucket.com/albums/ah118/minerscoininerscoin/image_zpsspb5xvid.jpeg

http://i1378.photobucket.com/albums/ah118/minerscoininerscoin/image_zpsarzl2eck.jpeg

Well what the heck is going on? Every one of these runs on my test setup at 200MHz for a minimum of one hour. Anything that throws errors gets pulled for repair and retesting. Anything that even throws more than expected hardware errors without raising the voltage more than 20mV from bench setting doesn't even get shipped.

I get Kilo17's error when i didnt use zadig and installed the right drivers and also for unknown reason. When it is "unknown reason" it is typically once at boot time which is fixed by hot replugging the stick.
988  Other / Beginners & Help / Re: Best Pool on: February 22, 2016, 12:34:31 AM
Hello!  Please, what is the best pool for today?

To point your SHA256d ASIC, i would strongly recommend https://www.kano.is/.

Aside the fact the pool has had amazing luck for a long time, the theoretical return at 100% luck is also the best(vs other big pools) with Kano due to pool code efficiency.
989  Economy / Computer hardware / Re: WTS: 1 Lonely Antminer S3 in Canada on: February 21, 2016, 11:40:29 PM
Those aren't facts.  

  Facts would be a link to ebay, a link to a proven sale, a proven supporting theory.

Quick look on ebay / kijiji in my local area.

3 x S3 + 1 Power supply $550 CAD
1 x S3 avg selling price $100 CAD - actually the home users like me are asking $125
1 x S3 mining farm beaters ebay $95 CAD buy it now

Its all moot because anybody who responds to a for sale ad to tell you it's not worth has always proven to be a loser. Price responders are the cheapos of the internet who want it but can't have it and often come with the most demented supporting facts. I think we used to call it story telling in can.forsale.

Please go and start a thread if you want to debate profits and mining.


You're way off on a tangent here. I'm going to give you concise and clear facts to help you stay on tract. Then if you want to shove your head into the sand and just ignore me, i dont mind;

You;
-75$ for 455GH/s at stock = 0.16$/GH/s at 0.7x efficiency.

Forum, here, not ebay, not kijiji, not craig. Right here, right now in this forum, even i would sell my S5's at 0.17$/GH/s which would be a better deal than your S3;
-150$ for 1155GH/s at stock = 0.13$/GH/s at 0.5x efficiency.

Bitmain;
-720$ before coupons for 4730GH/s at stock = 0.15$/GH/s at 0.28~ efficiency.

So i'm not making a debate here, just giving you facts, you're asking for more for your S3 per GH than better/more efficient hardware.

You can do whatever you want, but replying with insults and "you dont know what you're talking about", isint going to change said facts. If you want me to unsubscribe from your threads just say so.
990  Bitcoin / Mining speculation / Re: Mining Software, hardware, pool on: February 21, 2016, 11:10:33 PM
Hey guys new here, I'm from South Africa. I would like to know where can I find legit company where I can buy mining hardware and software and which pool would you guys recommend one to join?

really interested but I'm tired of the scams out there..

any real miners in here with proof of transactions who can help?


Thanks.
Tee.

Definitively Bitmain as mentioned. For the pools i strongly recommend "Kano.is".

How much does the electricity costs where you live? I expected it to be rather expensive in most of South Africa.
991  Bitcoin / Mining support / Re: Page AntMiner on: February 21, 2016, 09:43:39 PM

Thank you Virosa and excuse me (I'm a newbie) but what mean DHCP?
Since yesterday I cann`t connected to this page:

http://xxx.xxx.x.xxx/cgi-bin/minerStatus.cgi



DHCP mode tells your router to automatically assign an IP to the miner. IF you're on static, it will always give it that address and typically not resolve an IP conflict issue by itself.

Also what is the miner? Are the LEDs on as normal? Is the miner beeping? Are you getting hashrate on the poolside?

Regardless you need to go on your router and check what ip the device is connecting with.
992  Bitcoin / Mining support / Re: I have some questions about mining on: February 21, 2016, 09:41:15 PM
I'm thinking about starting mining,
and I think about using  a vps. I would love if some one who have already tried it help me a bit
the idea is to buy like 3 or more vpss and install miner in them !! would that be profitable regarding there cost?
any stats?

I started mining and I'm looking at a screen that's calculating , I hit start and in just watching it .
What do I do next , what do I expect to do after a while .

Nothing. The miner output is processed and submitted to the pool youre mining to. Your shares are calculated by the pool which will share the earnings with you. But if you're not mining on specialized hardware strictly for Bitcoin mining, you will not earn one cent.

You just let Cgminer run forever. Until its not longer profitable for you to do so i suppose.
993  Economy / Computer hardware / Re: Sapphire Radeon R9 390X 8GB GDDR5 DVI-D / HDMI / TRIPLE DP Tri-X OC Version on: February 21, 2016, 09:37:38 PM
Do u have any mining performance for this card?

My 390x es get 31.5mh stock. Slight OC to 33.5 though. Better deal than Furys if u can get the 390x at under $400.

Thanks for adding data. I wonder whats wrong with the 380x then.

I guess i can offer 300$ shipped to Canada, then. Considering its brand new it will probably not feel like a good offer. But my offer is there in case, until i find something better. Cheers.


300$ very low.

I understand why you would say that, but you can get more hash rate for 150$-175$, so you can only put so much money toward getting the deluxe card before its pointless. People here are typically miners and do a bit of research before buying, so if you can't sell at miner's price range, you might have to go sell on Ebay or Amazon etc.

However there's not that much pressure for you to sell since your GPU won't devalue super quickly like ASIC does.

i dont sell it as miner i sellit as GPU .

Well you're on the Bitcoin forum, not Ebay Tongue

There are better GPU here at better prices. Even on Ebay. Can probably get a 7990 for the price you're asking.

For sure u get a 7990  Grin for 350 $  Wink

Someone offered to sell me two, actually. They are used, but still, i just meant to say that people here will go for best performance for the price, which is why you have people posting in all your threads arguing your prices are bad. The problem is mostly because your stuff is from unknown provenance, second handed, and you're asking for retail price or even higher. Your flashy red trust doesnt help either.

You dont need to listen to them, nor to me though.

I just offered you a price and you said no. I went ahead and bought from retail instead, since it was cheaper.

Also, i don't think warranty is transferable? If so, as far as anyone here is concerned, your GPU's youre trying to sell are "used, like new" condition.
994  Economy / Computer hardware / Re: WTS: 1 Lonely Antminer S3 in Canada on: February 21, 2016, 09:25:00 PM
don't you respond to every for-sale post and say that  ??  nothing is worth it, you can offer only xxx,  i don't think its worth that much.  do you have a second hobby beside being extremely cheap/stupid and taking part in public discussion to show this.

Lol $5 / month ,, you have to be one big idiot.

I was stating facts, which seem to be hard to grasp for you, considering i neutrally replied to your comment and you're throwing insults like this is kid school all over. For your convenience, i took a screenshot of an S5 at 0.06$/kWh.



I trust i don't need to circle the relevant values in red? Profit per month is indeed under 5$.

It is also fact that you're asking 0.16$/GHs versus the S5's 0.1~0.12$/GHs. So you're asking easily for 50% more for it than a S5, which is more efficient and more compact.
995  Economy / Computer hardware / Re: Sapphire Radeon R9 390X 8GB GDDR5 DVI-D / HDMI / TRIPLE DP Tri-X OC Version on: February 21, 2016, 07:43:32 PM
Do u have any mining performance for this card?

My 390x es get 31.5mh stock. Slight OC to 33.5 though. Better deal than Furys if u can get the 390x at under $400.

Thanks for adding data. I wonder whats wrong with the 380x then.

I guess i can offer 300$ shipped to Canada, then. Considering its brand new it will probably not feel like a good offer. But my offer is there in case, until i find something better. Cheers.


300$ very low.

I understand why you would say that, but you can get more hash rate for 150$-175$, so you can only put so much money toward getting the deluxe card before its pointless. People here are typically miners and do a bit of research before buying, so if you can't sell at miner's price range, you might have to go sell on Ebay or Amazon etc.

However there's not that much pressure for you to sell since your GPU won't devalue super quickly like ASIC does.

i dont sell it as miner i sellit as GPU .

Well you're on the Bitcoin forum, not Ebay Tongue

There are better GPU here at better prices. Even on Ebay. Can probably get a 7990 for the price you're asking.
996  Economy / Computer hardware / Re: Sapphire Radeon R9 390X 8GB GDDR5 DVI-D / HDMI / TRIPLE DP Tri-X OC Version on: February 21, 2016, 07:25:23 PM
Is it good for rendering ? Im interested in both active and passive rendering

Well its a strong card, but its not a workshop card. I dont think it really fill that niche here. Unless you're talking about gaming, in which case its excellent.
997  Economy / Computer hardware / Re: XFX RADEON Double D R9 280X 1000MHz BOOST Ready 3GB DDR5 2XmDP HDMI 2XDVI Graphi on: February 21, 2016, 07:23:58 PM
For those in Canada: http://www.newegg.ca/Product/Product.aspx?Item=N82E16814150706&cm_re=280-_-14-150-706-_-Product
$190ish USD after shipping in Canada. (Newegg accepts BTC if you didn't know yet!)

EDIT: For Muricans http://www.newegg.com/Product/Product.aspx?Item=N82E16814150706

It would be 182$shipped for me in Canada, because of Newegg premier, but those are 280, not 280x. The 280 are about 25% slower than the 280x, so a rather significant difference.
998  Economy / Computer hardware / Re: WTS: 1 Lonely Antminer S3 in Canada on: February 21, 2016, 07:19:48 PM
I can only ship within Canada - anywhere else would not be practical.

The problem is, winter is ending, so the heating is no longer needed. And with 0.06$/kWh it would profit 5$ per month... And with the insane diff increase, that will probably fall to negative soon.

If you have it just idling, maybe i could run it here soon for a while, but considering you can get a S5 for just a bit over 125$, 75$ for a S3 is quite a bit too much right now.
999  Economy / Computer hardware / Re: [WTB][To Canada] GPUs 7950, 7970, 280x, 290, 290x, 370, 380x, 390, 390x, ETC on: February 21, 2016, 07:15:46 PM
Closed a few deals since then, i'd be interested to hear some more offers. Smiley
1000  Bitcoin / Mining support / Re: Page AntMiner on: February 21, 2016, 10:20:02 AM


I can not connect to the page AntMiner to monitor my miner. Is it a general failure?

Since when? Always? Are you on the same subnet as the miner? If this is a new occurrence connect to your router and check which IP the miner is connected to. If its on DHCP maybe it received a new address.
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