Diff thread Aug 8 to Aug 22nd picks are closed. Good luck! - page 2.

edonkey

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Quote from: notlist3d on August 20, 2015, 12:42:27 AM

Quote from: valkir on August 19, 2015, 09:48:23 PM

With the new S7 coming this one may be negative but the next one will be huge!

We don't know if the S7 will be soon or not. Bitmain did announce the chip which I agree is big. What I cant figure out is why a company that normally is quiet on development spoke out with it before S7 was released.

As suchmoon pointed out, they did that with the S3. They announced the chip, then the S3 two weeks later.

History could repeat itself...

notlist3d

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Quote from: valkir on August 19, 2015, 09:48:23 PM

With the new S7 coming this one may be negative but the next one will be huge!

We don't know if the S7 will be soon or not. Bitmain did announce the chip which I agree is big. What I cant figure out is why a company that normally is quiet on development spoke out with it before S7 was released.

Guess we will see in coming time what will happen. But no matter what them sticking with 28nm could be scaring a few other chip makers right now. I wish i could be a fly in the other companies wall to hear their R/D hurrying up after announcement.

philipma1957

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'The right to privacy matters'

http://btc.blockr.io/charts

And the first four days for this diff adjustment pre China explosion.

Aug 8 2015 163 +19 but about +10 since part was last diff
Aug 9 2015 133 -11 so -1
Aug 10 2015 168 +24 So +23
Aug 11 2015 170 +26 means we are + 49

And the 6 days after the China explosion.

Aug 12 2015 122 -22
Aug 13 2015 151 +7
Aug 14 2015 137 -7
Aug 15 2015 136 -8
Aug 16 2015 141 -3 -33 after the explosion
Aug 17 2015 145 +1 -32 "
Aug 18 2015 140 -4 -36 "
Aug 19 2015 164 +20 -16 "

we are plus 36 blocks with 297 left

so we made 1719 instead of 1683 we are now plus 2.13%

valkir

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I hope you are right Grin

But still if price go little bit up all old gear will fire it up and diff will raise.

suchmoon

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https://bpip.org

Quote from: valkir on August 19, 2015, 09:48:23 PM

With the new S7 coming this one may be negative but the next one will be huge!

Not necessarily. When the S3 came out last July we stopped having massive double-digit increases and difficulty charts started flattening. When the S5 came out last December the diff remained relatively flat for a couple of cycles then gradually climbed to where it is now. Difficulty seems to be affected more by Bitcoin price than hardware.

valkir

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With the new S7 coming this one may be negative but the next one will be huge!

wlefever

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Yeah btc price sucks, but I was hoping we stayed negative on this difficulty adjustment. I guess there is still time...

notlist3d

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Quote from: VirosaGITS on August 19, 2015, 07:00:00 PM

Quote from: Mikestang on August 19, 2015, 06:55:31 PM

Quote from: VirosaGITS on August 19, 2015, 06:51:38 PM

For instance there's 170CFM fans with 44dB. Versus the stock fan that is almost 10 time quieter.

I doubt the factory fan is 440dB... Tongue

Indeed it is not, its close to 80dB. dB is not linear so 10 more dB is twice as loud to the ear.

440dB would be a weapon of mass destruction. Tongue

I highly suggest having a mining area if at all possible. Then you don't worry about DB of fan's, and only worry is cfm and can stick without having to mod or change out fans on many miners.

On a side note the price of BTC still sucks. Hopefully we see it go up.

VirosaGITS

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Quote from: Mikestang on August 19, 2015, 06:55:31 PM

Quote from: VirosaGITS on August 19, 2015, 06:51:38 PM

For instance there's 170CFM fans with 44dB. Versus the stock fan that is almost 10 time quieter.

I doubt the factory fan is 440dB... Tongue

Indeed it is not, its close to 80dB. dB is not linear so 10 more dB is twice as loud to the ear.

440dB would be a weapon of mass destruction. Tongue

Mikestang

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Quote from: VirosaGITS on August 19, 2015, 06:51:38 PM

For instance there's 170CFM fans with 44dB. Versus the stock fan that is almost 10 time quieter.

I doubt the factory fan is 440dB... Tongue

VirosaGITS

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Quote from: Mikestang on August 19, 2015, 02:24:52 PM

Quote from: notlist3d on August 19, 2015, 02:09:04 PM

I don't think noise will change. They have been pretty consistent for last few generations on it is not quiet. Yes S5 was very loud, but S4 was not quiet either.

I think noise is here to stay best advice is to get a place to put them that it will not bug you.

It's a function of how much heat needs to be removed from the box. The machine generates X amount of heat, thereby requiring Y amount of airflow to remove said heat. Once that cfm requirement reaches a certain threshold there no way to keep it quiet without going crazy and fabbing up a water cooling system or something.

For a S5;
There's still a certain level of improvement you can get. For instance there's 170CFM fans with 44dB. Versus the stock fan that is almost 10 time quieter. Now i dont know exactly how much air flow you lose to resistance and so how much static pressure you need to keep the effective air flow but 2 of those should be better cooling than a single stock fan, while being wayy quieter.

Mikestang

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Quote from: notlist3d on August 19, 2015, 02:09:04 PM

I don't think noise will change. They have been pretty consistent for last few generations on it is not quiet. Yes S5 was very loud, but S4 was not quiet either.

I think noise is here to stay best advice is to get a place to put them that it will not bug you.

It's a function of how much heat needs to be removed from the box. The machine generates X amount of heat, thereby requiring Y amount of airflow to remove said heat. Once that cfm requirement reaches a certain threshold there no way to keep it quiet without going crazy and fabbing up a water cooling system or something.

notlist3d

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Quote from: wlefever on August 19, 2015, 11:05:20 AM

Quote from: suchmoon on August 19, 2015, 10:53:01 AM

Quote from: philipma1957 on August 19, 2015, 10:45:55 AM

based on their sales since feb 2015 they will not be giving them away. my guess is same form factor as s-5 and 2-3th thus 460-690 watts

since the s-5 was 341 or 1.5 btc plus shipping these would be okay at 3 btc plus .5 to ship or 3.5 btc .

lets say 3th for 3.5 btc shipped uses 750 watts and breaks even in 263 days 3% growth and 225 for a btc

so 3th 750 watts 3.5 btc shipping included lets see if thats what they do.

Sounds like a challenge? 2.5 TH/s @ $1000 plus shipping.

I would go for one of those as long as the fans don't blow the doors off, or pierce my ears with noise lol

I don't think noise will change. They have been pretty consistent for last few generations on it is not quiet. Yes S5 was very loud, but S4 was not quiet either.

I think noise is here to stay best advice is to get a place to put them that it will not bug you.

jonnybravo0311

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Mine at Jonny's Pool

Yup, that's why I can see the pricing model as I described it... about $1000 for the unit. 250 day ROI puts it smack in the middle of their typical range.

philipma1957

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'The right to privacy matters'

Quote from: jonnybravo0311 on August 19, 2015, 12:02:50 PM

Agreed... I'd far more enjoy the noise levels of the S1/S3 than those of the S5 for this unit. 2.5TH/s for $1000? Hmmm... again overpriced as far as I'm concerned, but it does match up with S5 pricing. 575W to get that 2.5TH/s, so just over double the hash of the S5 for just a bit less power draw. Assuming that is indeed the spec of the unit (big assumption there), that's $5.37 a day before power costs at current difficulty and exchange rates. Subtract out $1.38 a day for power at $0.10 per kWh and you're at just under $4 a day. 250 day ROI with that.

they have been pricing gear at a 225 to 275 day breakeven for a while. time to do this will come soon. I am glad I did not purchase a s-5+

jonnybravo0311

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Agreed... I'd far more enjoy the noise levels of the S1/S3 than those of the S5 for this unit. 2.5TH/s for $1000? Hmmm... again overpriced as far as I'm concerned, but it does match up with S5 pricing. 575W to get that 2.5TH/s, so just over double the hash of the S5 for just a bit less power draw. Assuming that is indeed the spec of the unit (big assumption there), that's $5.37 a day before power costs at current difficulty and exchange rates. Subtract out $1.38 a day for power at $0.10 per kWh and you're at just under $4 a day. 250 day ROI with that.

wlefever

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Quote from: suchmoon on August 19, 2015, 10:53:01 AM

Quote from: philipma1957 on August 19, 2015, 10:45:55 AM

based on their sales since feb 2015 they will not be giving them away. my guess is same form factor as s-5 and 2-3th thus 460-690 watts

since the s-5 was 341 or 1.5 btc plus shipping these would be okay at 3 btc plus .5 to ship or 3.5 btc .

lets say 3th for 3.5 btc shipped uses 750 watts and breaks even in 263 days 3% growth and 225 for a btc

so 3th 750 watts 3.5 btc shipping included lets see if thats what they do.

Sounds like a challenge? 2.5 TH/s @ $1000 plus shipping.

I would go for one of those as long as the fans don't blow the doors off, or pierce my ears with noise lol

suchmoon

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https://bpip.org

Quote from: philipma1957 on August 19, 2015, 10:45:55 AM

based on their sales since feb 2015 they will not be giving them away. my guess is same form factor as s-5 and 2-3th thus 460-690 watts

since the s-5 was 341 or 1.5 btc plus shipping these would be okay at 3 btc plus .5 to ship or 3.5 btc .

lets say 3th for 3.5 btc shipped uses 750 watts and breaks even in 263 days 3% growth and 225 for a btc

so 3th 750 watts 3.5 btc shipping included lets see if thats what they do.

Sounds like a challenge? 2.5 TH/s @ $1000 plus shipping.

philipma1957

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Activity: 4256

Merit: 8551

'The right to privacy matters'

based on their sales since feb 2015 they will not be giving them away. my guess is same form factor as s-5 and 2-3th thus 460-690 watts

since the s-5 was 341 or 1.5 btc plus shipping these would be okay at 3 btc plus .5 to ship or 3.5 btc .

lets say 3th for 3.5 btc shipped uses 750 watts and breaks even in 263 days 3% growth and 225 for a btc

so 3th 750 watts 3.5 btc shipping included lets see if thats what they do.

jonnybravo0311

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Mine at Jonny's Pool

Perhaps I should have defined big

. I don't mean we're going to see giant 20% increases... those days are likely long over. By big, I meant we might see a few 8-10% increases. You're absolutely right about the price as well. They start selling these things at 4-5BTC per TH, nobody's buying. I know I'm certainly not, considering I can get 1TH out of a couple S3s that are overclocked for well under 1BTC. I'd have to run them for a long time to make up that 4BTC difference from power usage.

Just for fun... Assume the S7 is 1TH/s at 230W and costs 5BTC. Assume also that I can get two overclocked S3s that will also get me 1TH/s for 800W.

Both expect to mine 0.009543BTC a day currently. At exchange of $225 (sure hope THAT goes back up), that's about $2.15 a day.

At $0.10 per kWh, the S7 will cost $.55 a day to run. The S3s will cost $1.92 a day. So, I make $1.37 a day more with the S7. To make up that 4BTC cost difference, it'll take me 657 days.

Topic: Diff thread Aug 8 to Aug 22nd picks are closed. Good luck! - page 2. (Read 7070 times)