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

[notlist3d]

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.

[Mikestang]

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.

[VirosaGITS]

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]

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... 

[VirosaGITS]

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... 

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.

[notlist3d]

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... 

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.

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.

[wlefever]

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

[valkir]

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

[suchmoon]

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]

I hope you are right 

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

[philipma1957]

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%

[notlist3d]

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. 

[edonkey]

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]

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...

One question that is related is how did iTop beat Bitmain to posting it to forums?  Did they release specs in China first and iTop took it to this board right away?

Was odd to see third party post it before bitmain.

[philipma1957]

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...

One question that is related is how did iTop beat Bitmain to posting it to forums?  Did they release specs in China first and iTop took it to this board right away?

Was odd to see third party post it before bitmain.

I think iTop is not the typical third party reseller.  But WTF do I know in this case absolutely nothing.

[notlist3d]

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...

One question that is related is how did iTop beat Bitmain to posting it to forums?  Did they release specs in China first and iTop took it to this board right away?

Was odd to see third party post it before bitmain.

I think iTop is not the typical third party reseller.  But WTF do I know in this case absolutely nothing.

They are for sure in the game to grab attention.  I wondered how they got that information.   I still wonder if they got it from China being announced first and they posted quick or how they did it.  I can't find if it was released before they posted the specs.

This is a little offtopic but I'm tired of seeing that iTop logo in so many posts.   It should be in the signature  not at top of each of their posts.   I don't think we would get away with posting an add at start of each post.  But again that is just me to.

Difficulty is not horrible on bitwisdom:

Bitcoin Difficulty:    52,699,842,409
Estimated Next Difficulty:    53,391,316,193 (+1.31%)
Adjust time:    After 157 Blocks, About 1.1 days
Hashrate(?):    388,316,959 GH/s

Price is a different story around 232.  I wish I could have gotten some of that under 200 flash crash BTC.

[suchmoon]

This is a little offtopic but I'm tired of seeing that iTop logo in so many posts.   It should be in the signature  not at top of each of their posts.   I don't think we would get away with posting an add at start of each post.  But again that is just me to.

It's not just you, I think it's in violation of #22 and/or #24:

https://bitcointalk.org/index.php?topic=703657.0

[philipma1957]

The LOGO below:






Has nothing to do with this post, but looks cool.




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 9 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  "
Aug 20 2015    144      0                        -16  "

we are plus 36 blocks   with 157 left

so we made 1859  instead of 1823 we are now plus 1.97%

maybe 1 day left  maybe 1.1 or .9 days


looks to me to be plus  1.250% to 2.75%   will be our winner

[notlist3d]

For what it's worth I put it in meta about iTop ad, I hope they can move to a signature vs the click able ad that has been invading Bitmain threads. - https://bitcointalk.org/index.php?topic=1158270.new#new *Edit now that nasty logo is gone for good .  Thanks suchmoon for providing exact rules broken.

And on btc price I sure hope it goes up in next month.  It shows how BTC is still early in it's adoption when one site can bring down the price this much. And also XT talk I think has some of the decline in price.  But that flash crash was just crazy, wish they would have had more in place to stop something like that from happening.

[philipma1957]

Looking like we will be at block 2016 around  11 pm friday eastern standard time.



https://bitcoinwisdom.com/bitcoin/difficulty    (+2.18%)


Bitcoin Difficulty:   52,699,842,409
Estimated Next Difficulty:   53,847,435,919 (+2.18%)
Adjust time:   After 78 Blocks, About 12.9 hours
Hashrate(?):   396,980,217 GH/s
Block Generation Time(?):   
1 block: 9.9 minutes
3 blocks: 29.9 minutes
6 blocks: 59.7 minutes
Updated:   10:25 (1.9 minutes ago)

look below

https://blockchain.info/blocks


370867 (Main Chain)  2015-08-21 14:31:07      
370774 (Main Chain)   2015-08-21 00:30:28

94 blocks today   in 14.5 hours     87 is normal    so we are finishing on an up note


we may go to +2.50%  or even +2.75%


the contestants below  all have a decent shot:

+2.01% to +2.25% Amph
+2.26% to +2.50% jonnybravo0311
+2.51% to +2.75% Kexkey
+2.76% to +3.00% EnternalWingsofGod
+3.01% to +3.25% wpt1wpt1
+3.26% to +3.50% notlist3d
+3.51% to +3.75% zebedee


I don't think we can go higher then +3.75%  even with a mad finish.