Which do you think is better, pi or A10cubie?

That was my MAIN concern and my concern was staying with "what I'm familiar with."

Not sure about something else I'm ignorant of.

What's the diff in price?

Edit: Make sure you check desables. Most miners other than bitmain are LOUD. I have two Rockminer RK-Boxes that sound as loud as a big vaccum machine.

I understand as I was really wanting to stay with a all in one like s3's and my cointerra however i was able to sell my cointerra and one s3 on ebay to buy 1 prisma with rpi and image and wifi and had the btc i mined last month from those 2 to get the other i will hash 1th/s faster and use 1000w less power so for me it was an easy decision the gui that crazy has running on the connected pi makes it pretty straight forward 8 pool failover etc is nice and since wifi wont be as affected with network issues by using same usb port for network traffic and connecting the prisma's the S4 was just as much an investment as PSU's if I needed as I would need to make some electrical changes Etc buying appropriate power cords and having outlets rated to handle the load so for me personally 1100 dollars for 2.8th/s was the better route even having to buy psu i could of gotten 4 650w for prob 100-200 max  

WOW.

I know the S4 starts up loud then it quiets down after it starts mining.

https://www.youtube.com/watch?v=KD4vdR7ZS8s

Watch this video on the S4 starting up and see how loud it is at first.  It then quiets down once it starts hashing.

DAMN, that is LOUD     LOL

^ since you been on the forum I don't have to do the math anymore!!! I do appreciate the info. I forgot I said I was going to start calling you numb3rs.....

This is the block chain's control theory feedback loop:

60minhr∗24hrday∗7dayweek 10minblock=2016 in 2weeks

Tcurrent=Tprior∗tprior/2weeks

D=work/2(32)=2(256)/(Tcurrent+1)∗2(32)

hashes/second≈D∗2(32)/600


The current target for the block chain is determined by a calculation, so any two clients looking at the block chain will calculate the same target. This calculation aims to adjust the target such that one block will be mined every 10 minutes, no matter how much total computing power is devoted to mining. The target changes every 2016 blocks based on the timestamps within those blocks. Why 2016? Because Satoshi decided two weeks was a good interval, and at 10 minutes per block, 2016 blocks will be mined every two weeks.

When 2016 blocks take more than two weeks to mine, the target goes up to make mining easier; when they take less than two weeks, the target goes down to make mining harder. In symbols, if Tprior is the previous target and tprior is the time it took to mine 2016 blocks using that target, then the updated target Tcurrent is just.

The target is typically a huge number well in excess of 2(200). Also it goes down as the total hashing power of the miners goes up. Consequently, interested people usually think in terms of the difficulty instead. Definition: The Bitcoin difficulty is the average number of nonces you have to try to find a valid block — aka. the work — divided by 2(32)(roughly 4 billion).

Note that D is just a number for human consumption. It scales in direct proportion to the computational effort required for mining, so twice the difficulty means twice the effort.

If we know the current difficulty D, we can estimate how fast all miners are hashing in aggregate. On average, it takes D∗2(32) hashes to find a nonce that works, and the target is selected to make that take 10 minutes.

^ it's definitely appreciated

Note: please check this out, it's probably the best explanation of Bitcoin I've ever seen. The link goes to page 10 but use the links in the top left to go back through the other 9 pages.

https://self-evident.org/?p=999

It will be a nice surprise if we find our next one within 15 hours.

sweeeeeeeeet

thumbs up!