Topic: HASHNEST Discussion and Support Thread - page 82. (Read 660097 times)

Recently the maintenance on s7 looks to be 75% and above.  This puts s9 above s7 from what I can tell. Is this just general variability or is it creeping up? It should stay the same until the next difficulty increase right?

Here is a very simplified example (with totally fictional numbers, just for convenience of understanding):


First of all, one GH of SHA256 power is one GH of SHA256 power. So it doesn't matter which type of machines are producing these, be them S7's or S9's or even a truckload of USB-devices.

Now, let's say you have 1 BTC to spend, and:
- S7 hashes cost 0.01 per GH
- S9 hashes cost 0.025 per GH
- maintenance on S7 hashes cost 0.005 per GH
- maintenance on S9 hashes cost 0.01 per GH

For your 1 BTC, you could purchase a total of:
- 100 GH of S7 power, or
- 50 GH of S9 power

This translates into the maintenance for them as following:
- 100 GH of S7 power, costs 0.5 on maintenance (100 x 0.005)
- 50 GH of S9 power, costs 0.2 on maintenance (20 x 0.01)

Now, as said before, a GH is a GH. And let's say that a single GH yields 0.02. Now you get:
- 100 GH of S7 power, yields a 2.00
- 50 GH of S9 power, yields a 1.00

Then, there's the maintenance to deduct:
- 100 GH of S7 power, yielding 2.00, minus the 0.5 maintenance, is netting a 1.5
- 50 GH of S9 power, yielding 1.00, minus the 0.2 maintenance, is netting a 0.8

===> Result: The S7's yield 0.7 more than the S9's.


Again, the above numbers are totally fictional, and are only meant to explain on why currently the S7 are more profitable than S9 hashes.






Another very simplified example with totally fictional numbers:


For convenience, we take the same numbers as the example earlier given. But, for easy convenience, let's say that the difficulty will increase with 100%. Now, you get:

- maintenance on S7 hashes cost 0.005 0.01 per GH (100% increase!)
- maintenance on S9 hashes cost 0.01 0.02 per GH (100% increase!)

This translates into the maintenance for them as following:
- 100 GH of S7 power, costs 0.5 1.0 on maintenance (100 x 0.005 0.01)
- 50 GH of S9 power, costs 0.2 0.4 on maintenance (20 x 0.01 0.02)

The maintenance to deduct:
- 100 GH of S7 power, yielding 2.00, minus the 0.5 1.0 maintenance, is netting a 1.5 1.0
- 50 GH of S9 power, yielding 1.00, minus the 0.2 0.4 maintenance, is netting a 0.8 0.6

===> Result: The S7's yield 0.7 0.4 more than the S9's.


Now next, for example, if you take a 300% increase, then the results on S7's would be 0, whilst the results on the S9 would still be a positive 0.2



I hope you are starting to get the picture?

The last time i bought s7 it were just 70ghs and it gaved me negative balance, something like 500 satoshis difference between fee and my income from it, when i had 100ghs i were able to get something like 30 satoshis of profit, while with same 100ghs i had earned much more, soo i dont see how s7 keeps being more profitable then s9. I do know we can buy easy s7 at 6000 satoshis then s9 at 15k, but i dont see the difference between hash making difference on the next stage of difficult (+7.06%) (https://btc.com/). In fact i believe we will get a reverse on the next days, where s7 will be giving less then the s9, considering the same value invested between the two hash.

Yes, and mr. Einstein had his doubt regarding the the first 

Two Things Are Infinite: the Universe and Human Stupidity (c)

The other thing to remember is that the markets are not rational.  They don't behave like traditional markets and any attempts to make correlations between btc price or difficulty compared to price of hashes may not be relevant at all.

My impression is that you have your math correct. It's just that every possible variable, except for your investment(s), isn't a static number in the whole. Hence, asking for somewhat solid numbers was kinda hard, since the whole tends to change every time one of those variables change 




Prices also went up when the BTC was in it's bull run lately. So more probable, it's due to people simply buying up S7 hashes again.

This is what I wrote earlier, but no one replied with numbers. I don't feel like a lot of people here have done the math.


As far as I can tell neither will earn money more than what you spent. After spending some more time looking at how much maint the S7 is, I see some large maintenance charges added every so often. Whereas before maintenance was working out to 20% of the payout for S7. Now with these large charges its 50% of the payout, so S7 doesn't look as attractive as it did before, but its still better to buy S7 over S9 based on the price/hash difference.

I notice that prices have gone up in the last 24 horus. Is this because of the BTC continuing drop?

You calculations are wrong

Right now BTC dropped $200 down. If it will be down $100 and every two weeks we will experience +10% diff increase your S7 will go below trash level

Thanks for the reply, I am definitely missing something. I put in equal bitcoin into S7 and S9 hashes. I was able to get 2.3 times as many S7 hashes. Even with the higher maintenence fees I am getting 2x the bitcoins from the S7.

From using the numbers on the calculator, it looks like in 2 months they should give equal bitcoins. After 3 months the S9 should be ahead, but for now S7 seems to work out.

The 'thrice' was when S9 hashes were roughly 15k satoshi vs 5k sat on S7 hashes; I gave that number out of my head, when I had last checked the prices. I see it has shifted somewhat in the meantime (S9 hashes going down in price, and S7's went up).

Number are simply not easy to give; because for instance those hashcost you were referring to prior, is a 'non-equal' percentage number between the S7 and S9 hashes: When the difficulty or the BTC price changes, the maintenance percentage on both hashes do not shift equally because they have different maintenance costs. And since your hascost is related to the ever changing factors of the hash-market prices, the price of the BTC and the bi-weekly network adjustment, exact numbers are not that easy. Unless, you would keep track of a daily record for yourself off course

Same

Login does not work for me, connection timeout.  Do u have the same problem?

S7 uses more electricity.

What do you think is wrong with the statement I made? Which child subforum are you suggesting

Edit: I think I misunderstood what Jessica's was saying. S9 is 2.29 times more expensive in terms of hash cost but only 2.09 times more expensive in terms of maintence. Where does the thrice come in? You can buy more s7 hash but you will pay more in maintenance at least from the numbers that HashNest is giving. Anyone can give any other numbers?

It looks like you really need to read child subforum here before getting into it

Thanks, basically you are saying 1THs on S9 is not the same as 1 THs on S7. In terms of doing due diligence thats what I was trying to do with the calculator. If I could get some actual S7 numbers I can figure out if its worth it in the long run. Clearly both will give money, the question is will they generate enough bitcoin to pay for the hashcost.

No need for screenshots: Yes, the S7's do cost roughly twice the maintenance of S9's. But, currently, you can get roughly thrice the amount of hashes when going for S7's, rather than S9's. Hence, and again currently, purchasing the S7's hashes results in a (far) better pay-off than purchasing S9 hashes.

I do not encourage you to purchase S7 hashes over S9's; nor other way around. Just do you due diligence, and make up what strategy best suits you 

But isn't the s7 maintenance cost more than double of the s9? Can someone show a screenshot of s7 and s9 earnings and maintenance cost?

When I run it through bitcoinwisdom mining calculator, they are both unprofitable over time but the s9 is closer to breaking even.

https://supload.com/rJL7uGurl

I remember the same discussion in the beginning of S7 selling - S5 vs S7. And then in a month or two difficulty killed all profit from S5.

It is strongly recommended to invest in the future - not in the current day