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1481  Bitcoin / Hardware / Re: BITMAIN‘s Liquid Cooled Miner C1: It is not only cool, but it is cool on: October 19, 2014, 03:31:31 AM
No I ordered the recommended accessories linked from Bitmains Website from http://shop.syscooling.com/goods-45.html

They better not send a copper radiator!!

Do you still see any issues with my cooling liquids and additives?

It says aluminium but most radiators of this formfactor use copper channels internally so you can never be sure. The barbs are also [strangely] listing as having copper, so I wouldn't risk it.

this is the radiator bitmain suggested - i doubt it contains copper (more expensie than aluminum anyways) in contact with the fluid
1482  Economy / Computer hardware / Re: [WTS] Computer Hardware/Mining Rig Parts (Ships from Canada to International) on: October 18, 2014, 04:48:46 PM
interested in the EVGA 1300 G2, located in toronto.

you mention its missing cables. how many PCIe connectors does it still have (6?)
1483  Economy / Computer hardware / Re: 24" PCI-E cables with 16AWG wires and 6" 18awg splitters - great for server PSU on: October 18, 2014, 04:45:58 PM
Just got the shipment notification on my newest batch of cables. I thought it would ship several days ago, but at least i now know its with DHL in hong kong, and should arrive during the week.

Im not a fan of 'pre-orders', but if anyone wants to organize their order with me (the batch is both 6"+6" splitters and 24" leads) prior to the cables landing in Canada, it would make it fast and efficient for me to repack and ship them out the very next day.

ps: im looking at the possbility of 36" cables or other esigns in the future - any requests or thoughts? (ps: i cant strand two connectors on a single 16awg lead - the cable is too thick - hence the splitter)
1484  Economy / Digital goods / [WTS] Antminer S3+ coupons - 70 available, make an offer! on: October 18, 2014, 04:29:59 PM
I have 70 of these coupons
00620141015094402024rz7903F9062B   AntMiner S3+ Coupon 0.035 BTC   70   0   2014-10-14 17:44:00~2014-11-13 17:44:00
Valid until Nov 13, 2014, 0.035BTC off per unit.

I only expect to use 10-20 of these myself during that time period, so would be happy to sell coupons for the right price. Other listings seem to be from 0.025-0.03/each, so I would be looking for something like 1/0.02, 5/0.09,  10/0.16,  20/0.27,  40/0.50


but feel free to make an offer.
1485  Bitcoin / Mining speculation / Re: ROI of a Mining Hardware - Quotes from ckolivas on: October 18, 2014, 04:22:13 PM
^agreed on some gear bringing ROI.

I bought B1 and B2 auctioned S1 units (4.75BTC and 4.25BTC respectively) and they must have made about ~7BTc each over their lifespan, plus $300 resale value each that covered the power use.

same for the first batches of the S3 - which were priced roughly the same as the current batch.

home mining will not die for those who have cheap power, because they dont pay overhead and in a small setup, cooling costs are avoidable (such as blowing out a window or passively heating a basement). A large farm pays insurance, security, employees, rent, etc. The biggest difference is that the big farms generally get very good electricity prices and sometimes bulk discounts on equipment compared to the guy running 2-3 units on a residential grid.


personally - im in the mini-selloff phase right now with the low BTC value. Ive mined a lot of BTC but now need to pay hydro bills and theres no direct competition between manufacturers right now to drive down the hardware costs to levels that are profitable at $0.15/kwh (luckily this is CAD, so more like $0.13 USD)

I expect that by early-november we will see the SP20/SP35, AM Prisma, and the S3+/S4 all selling from stock, hopefully creating some price competition to bring it down to 0.7BTC/TH by the start of december
1486  Bitcoin / Hardware / Re: Announcement: Bitmain launches AntMiner solution, 0.68 J/GH on chip on: October 18, 2014, 03:53:57 PM
Planning to but 10 C1s.
New to mining so some stupid questions.
Can someone please link me to which PSUs can I use to run them? Will the 250watt PSUs work fine? And I will have to buy seperate PSU for each C1?
How much load will they put?
Will I have to put 10 seperate ethernet cables in each of them?
How many units will one C1 consume/hour? 0.8units eh?
ill be thankful if you help me out

The C1 is not for you.
1) you didnt even ask about the liquid cooling - you'll spend more time, money, and space to set up radiators for the units then you will just getting S3+ units, particularly if you have the 0.035BTC coupons (I have a dozens of these, willing to sell for 0.025BTC each)
2) each board with individual PCIe connectors requires about 190W of 12V power. A S3+ has 2 boards, a C1 has 4 boards. Using 10 C1 units and 250W PSUs you would need 40 power supplies. Alternatively, you could buy 7 1200W power supplies.
3) yes, 1 ethernet per unit. you can buy a 8-port or 16-port switch fairly cheap though.

get the S3+ instead
1487  Bitcoin / Hardware / Re: BITMAIN‘s Liquid Cooled Miner C1: It is not only cool, but it is cool on: October 18, 2014, 03:48:28 PM
@ Bitmain:

With the broken promises of updated firmware for S2 users & all the problems with the S4, PSU, firmware, etc, etc - I would like to see some proof that these will actually work as advertised before deciding to buy some or not.

1) Can you post a screen of one actually mining showing hash/error rate?

2) Will these work with all pools, including p2pool, or just a select few as with the S4?

3) Has the firmware been thoroughly tested this time?

4) What version of cgminer is bundled with it?

Thanks.

The question you want to ask is whether its the same controller as the S3, or the kind in the S4. I would imagine it uses the S3 controller, in which case it would act just like an S3 but show twice as many chips/hashes
1488  Bitcoin / Hardware / Re: BITMAIN‘s Liquid Cooled Miner C1: It is not only cool, but it is cool on: October 18, 2014, 03:46:11 PM
Not to spread anti-environmentalism, but an obvious great market for this is people who have unmetered water. Wink

That's the other side of the C1 - those who use large farm evapourative cooling can simply plumb in the C1 into their mains.

Would swimming pool water corrode the water blocks?

yes. the chlorine and other chemicals will speed corrosion and may even damage PVC tubing or the pump.

however - if you wanted to heat a pool you would use a heat exchanger with two loops - one being recirculating pool water and the other being hot coolant from the miner(s)
1489  Bitcoin / Hardware / Re: Antminer U3: Decentralization continued. Order now, Ship on Nov. 5th on: October 18, 2014, 03:43:09 PM
Decentralization continued, really??.  Sorry Bitmain, while you guys have provided lots of good product to consumers the decentralization train left the station some time ago.

Why does everyone quote ck like he is a God? He's just one person, like everyone else. He has no additional knowledge of the market, like everyone else.

fact is that the U3 wont make any profit unless there is a drastic shift in BTC value - which would still ensure better profits for a larger miner anyways.

IMO ck's post is accurate, and it shouldnt be surprising that the bitcoin service will slowly centralize in areas where power is cheap. Even 2 years ago there were guys running $50,000 worth of GPUs in their garages or even rented buildings - those people now run $200,000 farms
1490  Bitcoin / Hardware / Re: ANTMINER S4 Discussion and Support Thread on: October 18, 2014, 12:29:06 AM
I agree - the Sp10 was horrifyingly loud even at 40% fan speeds. however, if you are able to operate without noise limits they are the best machines for build quality, reliability, and setup.

The part I most disagreed with was it didn't have to be that way, at 40% fans most of the noise was made by the PSU and not the actual miner. Same with the SP30, its exceptionally loud because of the PSUs primarily, which is as a result of them aggressively minimising their products.

i think its more an issue of the PSU - because it requires 40mm fans for its form factor. In the SP30 it would be nice if they used a single PSu with 80mm fan instead of a pair with small fans. would make a huge difference.

IMO thats why the S2 is great, those 140mm fans push lots of air even at slow speed and low noise
1491  Bitcoin / Hardware / Re: [DIY] - Reward $100 | Antminer S1/S3 Blade on Raspberry Pi on: October 18, 2014, 12:26:51 AM
hmm funny thing:

since i have 1 S3 board on rma,

ive put in an s1 board instead, and its hashing at aprox 40 GHs at 256.5 MHz


not terribly surprising, as the controller is basically the same i beleive, and you would expect about 100Gh from it if it ran at 400MHz.

40GH at 256.5 seems low based on that though, *should* be closer to 60Gh - is it undervolted?
1492  Bitcoin / Hardware / Re: ANTMINER S4 Discussion and Support Thread on: October 17, 2014, 11:21:34 PM
Honestly, miner manufacturers should just have us buy our own PSU's and avoid all the issues of fires, cables, CE markings, customs issues, not to mention the extra weight to ship it out.  If they want to recommend a PSU and provide a spot in the case for it, so it can be racked properly (For those units designed for racks) great.  But stop with the wholesale PSU market, somebody is going to die before too long and that's the last thing we need in the Bitcoin negative news of the week.  Just one man's opinion.

Integrated PSU can be a very good option if it is a decent psu and particularly if the miner and psu work well together.

Look at the spondoolies gear for an example - the miner website can tell you the voltage, wattage draw, and many other helpful details about how the psu is operating, and the slim psu being built in makes the spondoolies hardware the absolute best for plug-and-play.

Messing with external psus and wiring can get crazy. A clean solution is the key.

Lets be honest, of everything they do well, PSUs are not one of them. They're so loud that they exclude themselves from any inhabited buildings, where as if they went to a larger formfactor and could use ATX PSUs there wouldn't be that problem.

I agree - the Sp10 was horrifyingly loud even at 40% fan speeds. however, if you are able to operate without noise limits they are the best machines for build quality, reliability, and setup.
1493  Other / Archival / Re: Pictures of your mining rigs! on: October 17, 2014, 11:15:49 PM
Thought you guys might appreciate it.


Yours?

It's ZeusMiner / GAWMiners Datacenter Setup.

The only problem is none of them are installed nor does the Hashrate at all match what they currently pretend to offer with their Hashlets which are just fake miners that give you Bitcoins based on the thought that you may be able to make that amount of Bitcoin each day and that basicly a Bitcoin is a USD  Cheesy

Why would they fake a whole data center for it.... in the picture it looks like they are well plugged and running..

god you're fcking slow arent you?

Fake hashrate does not mean fake data center. 1PH/s datacenter in hardware ====> super dup to 10PH/s on cloud

you guys are weird, the concept is painfully simple.

you buy a TH - based on the current difficulty and assuming ideal (zero) variance, your daily payout is very easy to calculate. Thats what the site pays you.

If a machine in their farm goes down, they fix it and it has zero impact on your income. If a breaker trips and the farm runs at 80% capacity for several hours - you still receive 100% fixed income for the current difficulty.

of course, you could rely on a cloudmining where you 'own' a specific device and any error rates or downtime experienced by the machine or its pool directly decrease your income from the cloudmining.

your choice

That my friend is a definition of ponzi scam. Dont call it "cloud mining" then. You're buying btc thats promised in the future. Yeah.... i'm weird....

Only scammers dont see a problem in this scheme.


You ae making the assumption they are not mining. Im making the assumption they are doing it legitimately, with well-balanced $/GH payout. Take your arguments to the individual cloudminers threads that you want to accuse
1494  Economy / Computer hardware / Re: 24" PCI-E cables with 16AWG wires and 6" 18awg splitters - great for server PSU on: October 17, 2014, 04:38:57 PM
Can us underprivileged Europeans also buy them? I would like to buy a bunch if the price is right and the shipping is reasonably cheap.


I can organise direct shipping to cut down on costs, but the MOQ is 100
1495  Bitcoin / Hardware / Re: ANTMINER S3 Discussion and Support Thread. on: October 17, 2014, 04:34:32 PM
I paid $690 total for 3x Antminer S3 and 2x EVGA 650W Gold psu's.  Seller sent them via next day Fedex.

Just curious on what you paid?

Well how are you going to overclock 3 S3's with 2 power supplies that can't supply enough current to do it??
Each S3 at 250 will draw 400+ watts.
I would connect just 1 or 2 and try to overclock them 243 and 250. if they work then it is what I noted, the power supplies cant supply the amps needed for 3 overclocked

400w at 500gh is pretty much the ceiling for OC. The combined power of 2x650w supplies should be sufficient if there's at least 600w(50a) on the 12v rail for each.

Running at a moderate OC (such as 231.25mhz) should give you 475gh/380w per unit
1496  Bitcoin / Hardware / Re: ANTMINER S3 Discussion and Support Thread. on: October 17, 2014, 04:31:23 PM
anybody tried to use more than 1 coupon per each S3?

Does not work

I don't think there is or will be much interest in these, unless you can use multiple at least up to the cost of shipping.

pretty lame 1 coupon per miner... $13 off each

It's about 7% discount - not terrible
1497  Bitcoin / Hardware / Re: ANTMINER S4 Discussion and Support Thread on: October 17, 2014, 04:29:43 PM
Honestly, miner manufacturers should just have us buy our own PSU's and avoid all the issues of fires, cables, CE markings, customs issues, not to mention the extra weight to ship it out.  If they want to recommend a PSU and provide a spot in the case for it, so it can be racked properly (For those units designed for racks) great.  But stop with the wholesale PSU market, somebody is going to die before too long and that's the last thing we need in the Bitcoin negative news of the week.  Just one man's opinion.

Integrated PSU can be a very good option if it is a decent psu and particularly if the miner and psu work well together.

Look at the spondoolies gear for an example - the miner website can tell you the voltage, wattage draw, and many other helpful details about how the psu is operating, and the slim psu being built in makes the spondoolies hardware the absolute best for plug-and-play.

Messing with external psus and wiring can get crazy. A clean solution is the key.
1498  Other / Archival / Re: Pictures of your mining rigs! on: October 17, 2014, 11:20:35 AM
Thought you guys might appreciate it.


Yours?

It's ZeusMiner / GAWMiners Datacenter Setup.

The only problem is none of them are installed nor does the Hashrate at all match what they currently pretend to offer with their Hashlets which are just fake miners that give you Bitcoins based on the thought that you may be able to make that amount of Bitcoin each day and that basicly a Bitcoin is a USD  Cheesy

Why would they fake a whole data center for it.... in the picture it looks like they are well plugged and running..

god you're fcking slow arent you?

Fake hashrate does not mean fake data center. 1PH/s datacenter in hardware ====> super dup to 10PH/s on cloud

you guys are weird, the concept is painfully simple.

you buy a TH - based on the current difficulty and assuming ideal (zero) variance, your daily payout is very easy to calculate. Thats what the site pays you.

If a machine in their farm goes down, they fix it and it has zero impact on your income. If a breaker trips and the farm runs at 80% capacity for several hours - you still receive 100% fixed income for the current difficulty.

of course, you could rely on a cloudmining where you 'own' a specific device and any error rates or downtime experienced by the machine or its pool directly decrease your income from the cloudmining.

your choice
1499  Bitcoin / Hardware / Re: BITMAIN‘s Liquid Cooled Miner C1: It is not only cool, but it is cool on: October 17, 2014, 11:13:42 AM
Hmm i wonder if the C1 could run without the liquid kit.. there is still one fan there.. what if adding another one?

You can use distilled water or Deionized water 。

he is talking about operating the C1 without any liquid cooling setup, with the hopes that a singluar fan will magically cool the device. It wont.
1500  Bitcoin / Hardware / Re: BITMAIN‘s Liquid Cooled Miner C1: It is not only cool, but it is cool on: October 17, 2014, 11:10:53 AM
Well, if C1 price is 1 BTC then I would like to buy S4 for 2-2.2 BTC. Bitmain?.. My coupon will burn out soon and I can't use it to buy an expensive S4...

The S4 is more than just 2TH of hashing power. Its got an LCD (+0.05BTC), larger case(+0.1BTC), and a 1400W PSU(+0.8BTC).

That said, its overpriced and $1100/2.8BTC would be a fair price for it
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