Bitcoin Forum

Full disclosure: Voted "Just the center piece/controller/ 2550gh/1150watts", but I wonder how the noise is like on these things.

If (dare-to-dream) these are as quiet as the S2's or S3's, I would be awfully tempted in picking up a bunch to replace all my underclocked-S3's, S5's and SP20's.

If they did break it up in the way you proposed, I would imagine that the middle (controller) cube's efficiency numbers are going to be much more like they are with the S5.  Right now the overhead of the BB and the FPGA are spread across  all 3 cubes - but now it would be just the one.  At which point, you might as well just pick up some S5's.  

I think it's best either beast-mode S5+ or just plain old S5's...

If they did break it up in the way you proposed, I would imagine that the middle (controller) cube's efficiency numbers are going to be much more like they are with the S5.  Right now the overhead of the BB and the FPGA are spread across  all 3 cubes - but now it would be just the one.  At which point, you might as well just pick up some S5's. 

I think it's best either beast-mode S5+ or just plain old S5's...

Just for fun... want to get a couple of those beasts....

What do you expect the controller's consumption to be, like 10W (ex fans)?

If they did break it up in the way you proposed, I would imagine that the middle (controller) cube's efficiency numbers are going to be much more like they are with the S5.  Right now the overhead of the BB and the FPGA are spread across  all 3 cubes - but now it would be just the one.  At which point, you might as well just pick up some S5's.  

I think it's best either beast-mode S5+ or just plain old S5's...

Just give me the BM1386 already you mofos

How about:

Whom else is there to buy hardware from currently? Their competition hasn't made a new product in a long time and we are desperate for new miners.

...
There's nothing to suggest, beyond speculation, that a BM1386 actually exists. The S5+ suggests that Bitmain has plenty of BM1384 parts for now.

for those "committed" the full setup of 3450 watts would make sense.  set it up in the basement on a 220v dryer circuit and vent outside would be ideal.

a home miner would go for mid range @ 5th @ 2300watts is just perfect for a 20a 110v circuit.

although the price is quite high.

am i off or does this seem more expensive then a year ago?  forget the difficulty difference.

Pretty sad that now only bitmain will do small form miner.

Lets hope lketc will provide one too but Im pretty sure they will not be able to fight bitmain.

we could also do a mini group buy, a few pitch in on the s5+ then the head person gets the miner and ships out boards as paid for.

What do you expect the controller's consumption to be, like 10W (ex fans)?

Do you mean head person gets one whole miner?  On a miner at this price it would need to be a large group buy to provide person in charge a miner.

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Hashnest continues to be the world's leading cloud mining platform, and is one of the few cloud mining services to manufacture its own hardware. This significant advantage allows Hashnest to maintain a competitive edge over sites offering similar services. As a trusted supplier of physical mining hardware and ASIC chips, Bitmain & Hashnest are able to supply the large amounts of real hardware required to run such mining operations.

The PACMiC is a cloud mining offering for those who would like lower risk but more predictable and reliable payouts from their cloud mining contracts. PACMiC contracts do not charge a maintenance fee, and do not expire based on the cost of bitcoin. In fact, owning PACMiC is a way to hedge against bitcoin price drops, as PACMiCs give their owners mining revenue payouts even when the price is low.

This latest version of PACMiC offers users a bonus payment of 0.8 satoshis per second, per bitcoin outstanding until the contract ends.

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Each PACMiC V3 represents one terahash of mining power, and is sold for 0.666 BTC. The contract begins immediately upon completion of payment. Once the contract is in effect, users will immediately begin receiving the mining revenues from 1TH/s of mining power; payouts are according to AntPool’s PPLNS method. Electricity and maintenance fees will be borne
  
Each time a PPLNS payout is made, it will go towards paying back the 0.666 BTC initial purchase price. Additionally, a bonus payout of 0.8 satoshis per BTC per second is also made to the user. The contract expires when the user has mined the original 0.666 BTC purchase price. In the event that the mining machine becomes unprofitable (calculated using the electricity cost of USD$ 0.098), the contract will be suspended until such time that payouts are able to made again. Unlike regular cloud mining contracts, a PACMiC does not terminate when the bitcoin price falls too low, it just becomes inactive.

A 0.666 BTC PACMiC V3 contract represents 1 terahash of mining power, making the PACMiC V3 the cheapest cloud mining contract yet. Other cloud mining services generally price one terahash of mining power between 1.5 and 2 BTC.

With PACMiC, users no longer need to worry about high electricity fees or soaring difficulty. Mining with PACMiC is less stressful.


What is a Payout Accelerated Cloud Mining Contract (PACMiC)?
The PACMiC is a value-added cloud mining service product from Hashnest. The PACMiC is an electronic contract structured in a new way. BITMAIN will pay all the maintenance costs of the mining rigs, and all mining revenue will be used to pay back the PACMiC owners. While the principal is not yet paid back in full, it also makes bonus payments to PACMiC owners. When the principal is paid back, the mining rigs continue belong to BITMAIN. Both principal and bonus payments will be made to the contract holder based on the mining revenues of AntPool. Because PACMiC owners do not have to pay for maintenance or electricity on the machines, the payout is accelerated.

Purchasing a PACMiC
Each unit of PACMiC V3 will cost 0.666 BTC. Each PACMiC represents one terahash of hashing power. The contract will become active immediately upon receipt of full payment.

Computing principal and profit of an PACMiC
As soon as the PACMiC is activated, payouts will be made through Hashnest in accordance with the mining revenues generated by AntPool’s PPLNS payout method. Reward payments will be made beginning with the first block found by AntPool after the contract’s activation. From the first block until the contract’s expiry, reward payment will be accumulated every second, based on the total amount of the purchase price which has not yet been earned back through mining revenues.

Example: Alice’s PACMiC has already mined 0.166 BTC, so the contract will expire after mining 0.5 BTC more. Alice earns a reward payment of 0.4 satoshis per second based on her outstanding balance of 0.5 BTC. After mining 0.1 BTC more, her rewards rate is now 0.32 satoshis per second.

Profit Calculation Method
Outstanding [not yet mined] coins (BTC) * 0.8 (satoshis per BTC per second) * time to find a block (seconds). For every block found, the remaining mining revenues after the bonus is paid will count towards the outstanding bitcoin.
 
Please note: information on blocks found will only be transfered to Hashnest.com from AntPool after receiving six network confirmations. Because of this, profit and principal payments will be on a slight delay from the bitcoin network.

Contract Suspension
If after 120 days, a PACMiC has still not mined back its initial purchase price for the owner, and is not mining enough bitcoin to pay for its own electricity cost (fixed at 0.098 USD per kWh, calculated using AntMiner S5 specs, hashing at 100% uptime on PPLNS method), whether due to difficulty increase or BTC price decrease, the PACMiC will continue paying out for ten days as though it were running, even if the machine is turned off. If these conditions persist for ten continuous days, the contract will be considered temporarily suspended. During the suspension period, mining revenues and profit payments will be temporarily halted. If after the suspension period, difficulty has dropped or bitcoin price has risen, making mining possible again, the contract will be reinstated and continue from where it left off.

Contract Expiry
The contract expires when the user has mined enough BTC to cover their initial purchase price.
BITMAIN reserves the right to make mining payouts in advance, before the purchase cost has been paid back in full.



Q: Can the PACMiC be sold or transferred to other users?
A: No, PACMiCs may not be traded or transfered to other users.

Q: Do PACMiCs deduct electricity and maintenance fees?
A: PACMiCs do not deduct electricity or maintenance fees, these expenses are covered by Bitmain.

Q: Can I redeem my PACMiC before contract expiry?
A: No. The contract will be closed automatically at the time that the initial contract price has been repaid in full. Contracts may not be terminated prior to this, although BITMAIN may exercise the option to make advance payouts of mining rewards.

Q: Does PACMIC offer hardware delivery after the contract ends?
No, PACMiC is different from Hashnest's other cloud mining services in this regard. After the contract ends, the machines remain the property of BITMAIN.

Q: If AntPool experiences bad luck, will this affect bonus payments?
A: Bonus payouts are calculated using the amount of initial contract price that has not yet been paid back, and are unrelated to the pool luck of AntPool. Changes in pool luck will only affect the speed at which mining revenues are paid. Bonus payouts are earned at a steady 0.8 satoshis per bitcoin outstanding per second.

Q: How can the user make a profit?
A: Bonus payouts are calculated using the formula: unpaid principal (BTC) * 0.8 (satoshis per outstanding BTC per second) * time to find a block (seconds). Mining revenue will first be used to make bonus payments, the remainder of mining revenue will then count towards paying back the initial purchase price.

Q:When does the user start to get the bonus payout? Where does the bonus go?
A: Bonus payout begins accumulating as soon as the first block after contract activation is found. The bonus is paid directly to user’s wallet on Hashnest.com.

Q: What does the Auto-Rebuy feature do?
After enabling the Auto-Rebuy feature, your bonus payout will be used to automatically and incrementally purchase more mining power through the PACMiC.
When the feature is disabled, mining revenue and bonus payouts will continue accumulating inside your account as usual.

Q: If I have auto-rebuy enabled, when do those GH/s expire?
Same terms as before -- PACMiC hashing power expires only when the purchase price has been paid back to the owner. If the BTC price drops too low and the contract does not generate revenue, the contract becomes suspended (but not ended) until such time that it may generate revenue again.

Q:When does the contract end?
A:When the initial purchase price has been paid back through mining revenues.

Q:Is the PACMiC risk-free?
A: Like all forms of bitcoin mining, there is a certain level of risk involved. If the Bitcoin network difficulty skyrockets, or if the price of bitcoin drops too much to cover the electricity fee, the Antminer S5 units backing the PACMiC may not be profitable to run and be forced to go offline, in which case contracts would be suspended (possibly indefinitely) and the user may not recover the initial cost of the miner. The AntMiner S5 is currently one of the most power efficient bitcoin miners available on the market, and would be among the last to be forced to power down under unfavorable market circumstances. All users should do their own research and understand the risks involved with bitcoin mining, and also to understand that there is no such thing as a risk-free product.

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I looked over some power monitoring data I've been doing on a S5 I have - and when it's not hashing, and when the fan is on another power supply, it looks like it consumes about 50W (it periodically dips down to 17W, but for the most part 50W seems to be when it's doing something with the FPGA, but hashing hasn't begun).

If that's the overhead, then for 7 S5's, it would be 350W total for BB/controller - and without the BB/controller as part of the power calculation the S5 drops from 0.51W/GH to 0.46W/GH (pretty close to 0.44W).  Now 7 S5's is obviously 7 fans and the S5+ only has 6 - the fan at full power consumes 0.20 amps (~24w), so the system savings would be 324W over the same S5 configuration.  Not bad, more than 1/2 the wattage of another S5 by just changing the configuration around a bit..

From this I would say that they've done almost nothing in hardware design to increase efficiency of the S5+ (as opposed to the work Sidehack has done), and instead have made their gains by optimizing the system.

Why is it necessary to post your PACMiC scam  here ?

Before somebody  start to buy I recommend you read this forum.

https://forum.bitmain.com/?utm_source=hashnest

You're lucky if you can get back the original investment  :D

After purchase, there is no need to complain that you were not warned

you flux between 17 and 50 with no hashing.  It could stay stable at 17 when hashing.

 But for arguments sake  running 2 s-5's and using 1 controller.
then running 2 s-5's and using both controllers will give the true controller power draw.

17 is meh 50 is not.  

If I run 6 s-5's on 3 controllers I would save 150 watts. which is  about 110 kwatts per month.

But I read a post saying voltage was dropped to the chips on the s-5+. So I suspect your 17 to 50 with 0 hash while accurate has something to do with real numbers while hashing. along with the voltage setting dropped.

If you could run 2 s-5's machine on 1 controller and check watts  say 1150 is the watts.  then run 2 s-5's with  both controllers  and get 1200 watts  then you are correct.

I think you may get 1150 then 1170  my guess is the 17 watts number is more accurate not the 50 when hashing.

I also emailed Bitmain to see whether or not the new controller is compatible with the existing S5 blades - the connectors look the same, so if is, then it might be possible to cannibalize 4 S5's into a single mini S5+ - maybe call it an S5- perhaps?  ;)  It really depends on whether the controller ASIC just detects and adapts to the blades, or if it's got specific firmware on it for the newer S5+ blades.  At worse, even if it's not compatible, they'll hopefully sell me the cables which look to be much longer, so no need to hack up my existing ones.

It has got the 18 pin blade connector so you will need later hash boards (V1.91) with the 18 as opposed to 16 pin connector. I do not know what the additional 2 pins do, or if they are anything to do with the additional button on the controller board, or if a 16 pin blade can be used with a 18 pin controller? Perhaps someone does???

Rich

You can use new S5 Hash PCB  ( 18 pin connector)   with S5 Control PCB  (16 pin connectors) Need only a 16 pin cable.
Picture of my water cooling S5 project    3 x old blade + 1x new 18 pin blade.

Excellent points - I'm planning on building one quad-blade machine just to kind of prove things out, plus I have a water cooling kit I haven't built yet, so it's a good excuse.  ;)

If I SSH in and kill CGMiner, then it runs ~17w pretty consistently - it's once CGMiner runs and that it's not hashing that it maintains that pretty constant 50w for several seconds regardless of clock rate, then it kicks into gear and starts really hammering power.  But to your point, it could also be some characteristic of the ASIC's starting up, and not additional load of the FPGA starting up.

I also emailed Bitmain to see whether or not the new controller is compatible with the existing S5 blades - the connectors look the same, so if is, then it might be possible to cannibalize 4 S5's into a single mini S5+ - maybe call it an S5- perhaps?  ;)  It really depends on whether the controller ASIC just detects and adapts to the blades, or if it's got specific firmware on it for the newer S5+ blades.  At worse, even if it's not compatible, they'll hopefully sell me the cables which look to be much longer, so no need to hack up my existing ones.

I measured the controller current by making one measurement with 2 Hash boards connected and then with just 1 hash board connected. The difference is the current that a single hash board is taking. Multiply by 2 and take it from the number you first thought of  :) & the have the Controller current.

So the controller takes just over 0.4A, so controller Power is only 5W. So unless there is a flaw in my methodology not much of a power saving from sharing the controller.

One Blade - 275w: Physically unplugged both the controller connector and PCIe power plugs from one blade - software ran like normal, although the hash rate was obviously 1/2 of normal.

#3, the BB+controller is somewhere between 8w and 11.2w

That is good looks like we are in the same ball park. I did not unplug the Controller Connector when doing my test. I unplugged the other blade. I sort of assumed that things would not run with it unplgged? Which begs the question what is it for? I had measured 9V on it and assumed it was for a purpose?

EDIT. Assuming we are talking about the 4pin connector between the hash board & the controller I tried unplugging and nothing worked ???

.......
I went with bitmaintech's new cloud offer .  I purchased 10th for 6.66 btc   

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