Die marktprijs is wat ze in het forum worden verkocht, kijk maar op het grote internationale marktforum.
Met een S1 kan je momenteel aan normale elektriciteitsprijzen (0.12 €/kwh) die 75 € ook al niet meer terugverdienen, difficulty is te hoog.
Heb je gratis elektriciteit dan kan je nog maximaal 0.2 BTC minen.
Binnen 4 weken is de verkoopwaarde van de S1 effectief 0 €

Tot de vorige difficulty was de marktprijs 100 USD oftewel 75 €.
Difficulty met 20% gestegen, dus marktprijs is nu 60 €.
Binnen 2 weken: 45 €

It was almost never profitable to mine bitcoins when compared to electricity costs.
When we were mining with CPU, the electricity bill was 100x more expensive that the coins we won.
Same when the GPU mining started, 100x more expensive.
Of course afterwards when the bitcoin price rose many many times, it was profitable

Same as now, it you calculate your mining costs with a bitcoin price of 500, you're not going to have a positive ROI.
But if you hope for bitcoin price of 3, 5 or 15 thousand, the numbers look really different.

As for the kits, no i'm undervolting (10k pot mod) my S1's to add to their lifespan.
If you can get defective S1's for free, that would be a good option.

I finished undervolting my first 3 S1's with 10k pots.
2 are running fine, 1 is getting 1 to 8 x's after 24h.
Does anyone know how to translate the position of the X-marks in the status screen to the actual location on the S1 ??
That'll make it a lot easier to re-check the ant.
I did order a finer point (1.6mm) for my weller to do the next 4 S1 ...

Some experience with undervolting:
- soldering 10k pots is VERY hard. the first 3 took ages since it is both very small and the solder does not take easily. On top of that when you heat too long the smd resistors fry and go up in resistance. luckily you can compensate with the pots.
- the clue is to solder quickly (and use fresh solder within a few secs)
- I used 10k pot in parallel so to lower the resistance to 2.9kohm (from 4.47kohm). I need to set my pots to 8.3kohm for this

So this was stock:
395W at wall (from a Corsair 80+ gold psu), 180Gh/s, 350Mhz

I tried 300Mhz but gave too much HW's.

So then I tried 275Mhz:
192W at wall, 140Gh/s

So a reduction of 23% in hashing power gives a reduction of 52% in power consumption.
Power consumption is now 1.37 W/Gh (down from 2.2 W/Gh).
Fan powers down to 1440rpm (down from 2160rpm)

I'll run this for a day to see how it goes.
Then try 1 antminer with pencil method and see how that holds up.

Anyone did the potentiometer modding with also removing the SMD completely? How is that done ?

Question about the PCIe connectors and normal 12V-0V connectors.
I am using Corsair CX500M (38A on 12V rail) to power 1 ANt.
When I voltmod them it will be possible to power 2 ants on 1 PSU.

Question.
Can I connect just 1 cable from PSU to ANT, and then connect the 2 normal 12V-0V between the 2 boards ?
Will that work ?
I should think so but never tried...

Met de huidige electriciteitskosten en difficulty is de terugverdientijd > 6 maanden en dus helemaal onzeker.
Meer dan 750 € zijn die S2 niet meer waard, en het gaat snel naar beneden.

CPU mining back in 2010: profitable (in retrospect), investments were zero and only cost was electricity
GPU mining in 2010/2011: hugely profitable in the beginning, was mining directly with 2 AMD gaming cards i had, so again no investments and only cost was electricity
ASIC mining in 2014: with Antminer S1: marginally profitable (0.5 BTC per miner after electricity costs)

So yes I made money, but only because I was lucky to stumble upon bitcoin in the very beginning and invested 2 months CPU and 3 months GPU time (instead of running BOINC).
At this date I do not see how you can make money mining unless you design/produce/sell a nextgen mining asic or scale up in size (>100k€ in mining equipment).

Geld verdienen met minen is een illusie (niet met eigen materiaal en zeker niet met mine contracten). Je kan het doen als hobby om iets bij te leren.
Ik raad je aan om een okkasie Antminer S1 op de kop te tikken (<= 100 €) en daar wat mee te spelen. Undervolten als je kan en zo kan je dat geld terugverdienen.
Als je wil speculeren op de stijging van bitcoins, koop dan gewoon bitcoins en leer dingen zoals cold wallets, ...

Als je wil beginnen minen kan je vb. een paar (of 1) okkasie antminer S1's kopen (betaal niet meer dan 100 € per stuk).
Eventueel nog wat undervolten en dan kan je probleemloos je geld terugverdienen.

Vergeet niet dat bij aankoop van nieuw materiaal de fabrikant dit enkel verkoopt als hij er minder mee kan verdienen dan met het toestel zelf te minen ...
De prijs balanceert dus altijd op de rand van rendabiliteit. Tenzij je gratis stroom hebt (vb. all-in huurcontract of in een beter land als het onze) heeft dit weinig zin.

Uw adres ? Zo weten we of we kunnen afhalen.
Indien afhalen kortbij bied ik 0.2BTC

Neem ook maatregelen om te vermijden dat dit in de toekomst nog voorvalt.
Zet je wallet niet op je dagdagelijkse pc.
Neem een oude pc of koop de goedkoopste laptop of mini-desktop.
Installeer daar Ubuntu op, met een ge-encrypteerd gebruiksgedeelte (dit is allemaal zeer eenvoudig, je vindt genoeg how-to's op internet).
Zet daar je wallet op, deze uiteraard ook ge-encrypteerd.

Backups van je wallet moet je maken en zet deze in een truecrypt container.

Veel succes met je pogingen tot recuperatie.

Paar vraagjes:
- zijn de S1 met PCIe connectors ?
- welke voeding wordt meegeleverd ?
- transportkost naar België (1840 Londerzeel) ? Vaste prijs per S1 of blijft die hetzelfde als er meer dan 1 besteld wordt ?

Mvg

Johan

I don't think Satoshi is a group of people. It would be extremely difficult to keep a secret with more than a few people, especially when that secret is worth millions or billions.
Also I think that he realises that the known Satoshi coins can never be moved and I presume he has already erased the private keys for those adresses. It is just too great a risk that someone else releases them.

There are some other possibilities for the BTC price to go up:

1. major EU country gets into difficulty with their debt (France, Italy) and at that time the threat of a public haircut will high. We've seen this with Greece and Cyprus.

2. The US starts to "attack" the financial position of some well known islands like Bahama's, Virgin Islands, ... They could tell banks that wire transfers in USD can no longer be executed with these countries since they refuse to divulge account information about US citizens. They already did this with Switserland and to my surprise it actually worked. There's boatloads of money there so if 10% of this ends up into bitcoins ...

Simply: yes

The only ones who are making real money with mining are the company's that produc mining equipment.
They first use it to mine themselves and when the return starts to slow down, they ship it to their customers. That's why all the pre-orders on the latest mining equipment exits.

I started mining CPU somewhere in 2010 and then GPU mining with a 5870 and 5770 end-of-2010.
During 3 months I mined 24/7 with the cards. In the beginning I was winning a block (50 BTC at the time) every 30 hours.
After the 3 months, stopped because it would take about 1 week to win a block and didn't feel like entering a pool (hehe).
Forgot about the whole thing up to the point where BTC > 20 USD. Saw the crash happening and really forgot after that.
When the price recovered I had already reinstalled my pc twice (reformat vista and then win 7). Wallet was gone but fortunately could get it back from my 2 rolling backups.
Finally got an account on Gox, sold some in the rise to 1000, cashed out (and received) quite a bit, bought some gold coins, a trip to Florida, and lost 25k€ in the Gox affair.

Mining with this card was never profitable when taking into account the bitcoin price at the time of mining.
In 2010/2011 you could mine lots of bitcoins with this card but the coins were essentially worthless at the time.
The rise of bitcoin price made it (hugely) profitable after the fact, but so would buying 1000USD worth of coins at that time (at 0.05 $/BTC)

Same situation today. The card will cost many times more in electricity than it will get in bitcoins.
If the bitcoin price rises to 1,000,000 USD even this would be profitable.

That being said, using GPU today to mine bitcoins is completely a big no-no. Asic's are the only way now because with todays bitcoin prices you can marginally get your investment back.

For investment purposes this is not the way to go. It is much simpeler just buying the coins and holding them (in well protected wallet, read up on this FIRST).

We'll I'm installing a solar plant on my roof with some 20% additional power for mining.
Cost in Belgium is about 2.53 $/kWp (1.875 €/kWp).

To give an example: my 2 antminers S1 use 730Watt constantly. Over a year this gives 730*24*365 = 6394 kWh !!
That's about 50% of what I consume now (12000 kWh annually). This of course takes into account that I ran 2 pc's on boinc for the last 5+ years.

The goal is to use up 100% of day solar production. The price at night is about half so that's less a problem.

I think the 62A should suffice for 2 ants. No OC'ing of course.Yuo'll be running at about 92-94% of max.