In your calculations you are assuming you will get a full month of mining with each difficulty. How do
you think that will happen? Each increase is on average every 14 or so days.
UPDATE: Think average of -12% every 14 days. The power of compounding-works both ways. Your ROI prognosis now
looks very different...
Topic: Bitmaintech's Antminer S3+ vs. Spondoolies-Tech's SP30 / SP31 Yukon - page 3. (Read 9546 times)
August 13, 2014, 08:13:01 PM
August 13, 2014, 03:41:54 PM
and in most of these apartments, are you able to run the SP30? I doubt there's a proper circuit and a sound-proof dedicated room 
but, winter is coming... heating included!!
IMHO, just S3s. You need a 30 amp circuit for an SP30 - right. but, winter is coming... heating included!!
August 13, 2014, 02:05:49 PM
My calculations above are already based on the new data for the S3+.
Since we have 240V here in Europe, calculating for 110V was not relevant for me.
Since we have 240V here in Europe, calculating for 110V was not relevant for me.
Try running the numbers for the S1 upgrade for people who already have S1 machines and power supplies.
It beats all the other options.
The upgrade is .46BTC, performance the same as the S3+. OC potential to 500ghs.
This gives you a fixed cost of 4.6 BTC for ~ 5TH
good point !
August 13, 2014, 01:58:00 PM
I have not done the calculations but you seem to be missing the fact that if you order an S3+ you get 453GHS more for the .58 BTC with the Upgrade you pay .46btc but only get 253 GHS since your current S1 can already produce ~200GHS. There is no way that upgrade makes any sense at those prices.
Good point, and clearly a game changer for people considering that upgrade offer!
Not relevant for me though, I'm still sitting here without any miner at all (and the more time passes the more I'm disinclined to begin with; but well, for some reason baring any logic I'm still intrigued!).
August 13, 2014, 01:25:49 PM
My calculations above are already based on the new data for the S3+.
Since we have 240V here in Europe, calculating for 110V was not relevant for me.
Since we have 240V here in Europe, calculating for 110V was not relevant for me.
Try running the numbers for the S1 upgrade for people who already have S1 machines and power supplies.
It beats all the other options.
The upgrade is .46BTC, performance the same as the S3+. OC potential to 500ghs.
This gives you a fixed cost of 4.6 BTC for ~ 5TH
August 13, 2014, 12:08:54 PM
Good question, why would anyone want to invest in mining hardware from now on forward? OK, some are just stupid, others may think it's fun (is it?), and the kiddies think it does not matter with something like "free energy" (THERE IS NO FREE ENERGY) in mind.
While I agree there is no "free" energy, there are a number of apartment complexes (not dormitories) where electricity is included in the rent. So while I consider the energy "free" from an ROI perspective, I still count it as part of my mining expenses from a tax perspective.
but, winter is coming... heating included!!
August 13, 2014, 11:35:45 AM
Good question, why would anyone want to invest in mining hardware from now on forward? OK, some are just stupid, others may think it's fun (is it?), and the kiddies think it does not matter with something like "free energy" (THERE IS NO FREE ENERGY) in mind.
While I agree there is no "free" energy, there are a number of apartment complexes (not dormitories) where electricity is included in the rent. So while I consider the energy "free" from an ROI perspective, I still count it as part of my mining expenses from a tax perspective.
August 13, 2014, 09:39:44 AM
What am I missing? How does sp30 win any way you turn the coin?Max profit for each of the 3 calculations is what?
Next to nothing, I know. 
Also, you are in fantasy land with 20% increase per month assumption. You should use 35 as bare minimum and with next increases coming, it wouldn't surprise me to see a LARGE jump soon.
Difficult to tell what's going to happen, the recent spike made a lot of people pretty nervous. 20% increase per month and 0.1% on BTC value definitely don't match the reality, calculating with 35% will nothing ever reach a positive ROI at all.Why is this important? Because of salvage value. How many people will want to buy your used s3 vs sp30? You'll get a marginally higher resale price with s3, not sp30
Agreed, the salvage value is not to be underestimated, and the SP30 will clearly loose here. Another matter to consider: It's way easier to put a bunch of S3+ on different power circuits than a single SP30 (our regular 240V circuits only have 13A breakers).The real question you might ask is why would anyone in their right mind spend over USD 3K in the hope of making a few hundred bucks after a year when there is so much uncertainty in the ROI equation.The risk/reward ratio seriously discourages any mining by people who have to pay retail prices for equipment and electricity.
Good question, why would anyone want to invest in mining hardware from now on forward? OK, some are just stupid, others may think it's fun (is it?), and the kiddies think it does not matter with something like "free engery" (THERE IS NO FREE ENERGY) in mind.How is it you don't pay VAT ?
Letting the company purchase and run the hardware (indeed works if you own the company 
). August 13, 2014, 09:35:37 AM
You ship
How is it you don't pay VAT ?
Ship to a colocation facility outside the Eurozone; for example we have several European customers hosting S3's with us at $65/mo.
being able to omit VAT is my secret weapon here
How is it you don't pay VAT ?
Ship to a colocation facility outside the Eurozone; for example we have several European customers hosting S3's with us at $65/mo.
Right, so include hosting costs in the calculations for the SP30.
However, the OP suggested he was self hosting and not paying VAT.
August 13, 2014, 09:33:56 AM
You ship
How is it you don't pay VAT ?
Ship to a colocation facility outside the Eurozone; for example we have several European customers hosting S3's with us at $65/mo.
being able to omit VAT is my secret weapon here
How is it you don't pay VAT ?
Ship to a colocation facility outside the Eurozone; for example we have several European customers hosting S3's with us at $65/mo.
August 13, 2014, 09:29:27 AM
being able to omit VAT is my secret weapon here
How is it you don't pay VAT ?
August 13, 2014, 09:29:05 AM
The real question you might ask is why would anyone in their right mind spend over USD 3K in the hope of making a few hundred bucks after a year when there is so much uncertainty in the ROI equation.
The risk/reward ratio seriously discourages any mining by people who have to pay retail prices for equipment and electricity.
That and friedcat has released the tube The risk/reward ratio seriously discourages any mining by people who have to pay retail prices for equipment and electricity.
August 13, 2014, 09:26:17 AM
The real question you might ask is why would anyone in their right mind spend over USD 3K in the hope of making a few hundred bucks after a year when there is so much uncertainty in the ROI equation.
The risk/reward ratio seriously discourages any mining by people who have to pay retail prices for equipment and electricity.
The risk/reward ratio seriously discourages any mining by people who have to pay retail prices for equipment and electricity.
August 13, 2014, 09:23:36 AM
What am I missing? How does sp30 win any way you turn the coin?
Max profit for each of the 3 calculations is what?
Also, you are in fantasy land with 20% increase per month assumption. You should use 35 as bare minimum and with next increases coming, it wouldn't surprise me to see a LARGE jump soon.
Why is this important? Because of salvage value. How many people will want to buy your used s3 vs sp30? You'll get a marginally higher resale price with s3, not sp30
Max profit for each of the 3 calculations is what?
Also, you are in fantasy land with 20% increase per month assumption. You should use 35 as bare minimum and with next increases coming, it wouldn't surprise me to see a LARGE jump soon.
Why is this important? Because of salvage value. How many people will want to buy your used s3 vs sp30? You'll get a marginally higher resale price with s3, not sp30
August 13, 2014, 09:22:49 AM
Try running the numbers for the S1 upgrade for people who already have S1 machines and power supplies. It beats all the other options. The upgrade is .46BTC, performance the same as the S3+. OC potential to 500ghs. The gives you a fixed cost of 4.6 BTC for 5TH
Of course it beats all the other options, but it does not help me due to the lack of previously purchased S1. If you are in the mood you can try at the Mining Dashboard | TradeBlock yourself.
August 13, 2014, 09:18:53 AM
My calculations above are already based on the new data for the S3+.
Since we have 240V here in Europe, calculating for 110V was not relevant for me.
Since we have 240V here in Europe, calculating for 110V was not relevant for me.
Try running the numbers for the S1 upgrade for people who already have S1 machines and power supplies.
It beats all the other options.
The upgrade is .46BTC, performance the same as the S3+. OC potential to 500ghs.
This gives you a fixed cost of 4.6 BTC for ~ 5TH
August 13, 2014, 09:15:28 AM
My calculations above are already based on the new data for the S3+.
Since we have 240V here in Europe, calculating for 110V was not relevant for me.
Since we have 240V here in Europe, calculating for 110V was not relevant for me.
August 13, 2014, 09:10:35 AM
Hosting costs for the SP30 and/or the decreased performance on 110v ?
I have taken a look at hosted solutions, but according to my calculations I'm better off with self-hosting despite the relatively high energy costs (but being able to omit VAT is my secret weapon here). I can not speak for the decreased performance on 110V.The SP30 is sub 4TH on 110.
August 13, 2014, 09:09:56 AM
ANTMINER S3 -B7 SOLD OUT
ANTMINER S3+ -B8 Speed: 453 GH/s Price: 0.58 BTC
Bitmain now announce the S3+, which is a revised version of S3 running stably at 453GH/s (frequency=225 MHz), while consumes 355 Watt power at the wall. Most of miners will be able to run up to 500GH/s but not guaranteed.
AntMiner S3+ for sales shipping starts on September 20th or earlier
ANTMINER S3+ -B8 Speed: 453 GH/s Price: 0.58 BTC
Bitmain now announce the S3+, which is a revised version of S3 running stably at 453GH/s (frequency=225 MHz), while consumes 355 Watt power at the wall. Most of miners will be able to run up to 500GH/s but not guaranteed.
AntMiner S3+ for sales shipping starts on September 20th or earlier
August 13, 2014, 09:08:34 AM
Hosting costs for the SP30 and/or the decreased performance on 110v ?
I have taken a look at hosted solutions, but according to my calculations I'm better off with self-hosting despite the relatively high energy costs (but being able to omit VAT is my secret weapon here). I can not speak for the decreased performance on 110V.
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