It's quite simple. If the total network hash rate is 200TH/s and you have 1TH/s you will receive roughly 0.5% of all bitcoins generated.

If you have 1x 4.5GH/s unit at 200TH/s network rate would receive 0.00225% of all bitcoins generated.

If people with a large bank book purchase more hardware it can offset those with a smaller amount of hardware if those with less hardware do not purchase more.

Lets say after the network hash rate 10 people decide to purchase 10TH/s. It will raise the difficulty to 300TH/s. If the 1x 4.5GH/s user does not increase their hashing power they will now only be receiving 0.0015% of all bitcoins generated.

..

Bitcoin is a battle of who invests the most money and the length of the ROI period investors are willing to accept. The amount of currency generated is always the same, which is what the investors are battling over (obviously).

Their FPGA units are relatively easy to repurpose to another task. Mainly encryption. But you could do other stuff (more inefficiently than encryption, but still possible).

With the number of ASIC pre-orders for bitcoin mining hardware, I imagine they will be using those profits to work their way into computational processing in other fields.

I was thinking like 100TH/s total hash rate by DEC-JAN. But, the pre-orders just seem to keep rolling in for BFL. I myself placed a few more orders just to secure the return per month I'm looking for.

All you can really do with any sort of accuracy is speculate on total hash rate after the asics hit based on published order information. I think by Jan 2014 the network hash rate should be relatively stable with a relatively small amount of growth each difficulty increase. People may still continue buying asics after that point, but I think largely the hash rate at that point will be the hash rate until 2017.

If the difficulty goes to high I could see some smaller miners switching over to alt coin chains.

The last couple times I emailed them I didn't have any issues getting a reply in 1-2 days.

But, I just sent them an email asking to upgrade an early order to higher end units (from 1x 649$ to 2x 1299$). Sent it on friday (10/12) no reply yet.

That's not a lot of preorders. I wonder if they have enough funds to cover a single production run of chips.

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->ORDER NOW<-

Have you contacted BFL about this? Is it possible to have an order shifted to another billing account and maintain queue position?

I originally pre-ordered 2x 4.5GH/s singles and then changed my order to a 1x 30GH/s unit (without losing my position in queue)

I ordered a 27GH/s unit for testing

Oct. 10 2012 #1331

With a 10x increase in difficulty and a 50% pay cut. You'd still make a profit in a reasonable time frame with asic

You're going from 350mhash/s for 150$ to 3.5ghash/s for 150$.

Just multiply everything by 10 and you'll get a good idea of what the network will look like. Total hash rate would be somewhere around 200 teraflops.

350mhash/s now pays out about .1 bitcoins per day (give or take). That would be reduced to 0.01 bitcoins and divide that in half for the block decrease to make it 0.005 bitcoins per day.

3500mhash/s now would pay out about 1 bitcoin per day (give or take). That would be reduced to 0.1 bitcoins and divide that in half for the block decrease which makes it 0.05 bitcoins per day. That's 18.25 bitcoins per year x 4 years to give 73 bitcoins (during the 25 coins per block period). Assuming value stays the same you would have gone from 150$ input to 875$ a profit of nearly 600% in 4 years (at 12$/coin). So, I'm not sure why you're saying that you only have a "fighting chance". Or are you expecting to get a return on investment of 1 day?

It's also logical with the reduction in circulation that the exchange rate of coins will increase. I would not be surprised to see the exchange rate at 25$/coin (steady).

So uh, if you get some asics going now. You're good for the next 8 years or so while it's 25coins/block and you can continue mining at 12.50 a block and earn some additional profit on an investment that was already paid off long ago.

As long as nothing happens to sha256 itself (vulnerabilities) you can also switch over to another block chain. I would not be surprised to see an inflationary coin network pop up. The deflationary nature of bitcoin doesn't really make much sense from an economics perspective. Unless of course you wanted a deflationary system so you could get the original coins and cash them out when it's 100$/coin. I would favor a chain with a steady 2% per year inflation on the chain. (10% increase in bitcoins per block every 5 years or so.) To me, I find it more logical to have a block chain that increases its supply with age so that as the population of users grows, so do the amount of coins available. A steady increase in the coin supply would also help the "lost accounts". I myself accidentally lost a wallet containing 5 btc never to be heard from again. (Accidentally deleted my old windows install before copying my wallet files over ) Not to mention the other inherent flaws (such as the large transaction database).

I had an nvidia miner @ 20mhash/s get lucky the other day and score a block.

Then you aren't middle class.

If you're looking to make a profit off a bitcoins why would you even bother with nvidia? It's only worthwhile if you've got 1000 of them and only if you dont need to pay for electric.

The only improvement in cuda vs opencl is not having the miner use 100% cpu of 1 core. Which is the entire reason I updated the code for this one to support newer gpus. If there is any performance difference; It's insignificant at best.

Almost all pools keep the transaction fees. Depending on the number of blocks a pool gets; that might be sufficient to pay the colocation for the server.

I'm not sure what to tell you. I know the Ang3lus has linux specific functions in it. I couldn't get it to compile under windows. I gave up fairly quick.

Do you have any gdbs on the segfaults?

http://en.wikipedia.org/wiki/CUDA

The GTX 470 is arch 2.0 and should work just fine. I myself have a 460 and it works fine. But I've not tried to use it on linux.

Do you have the cubin files in the directory?

Specifically, bitcoinminercuda_20.cubin

You can download my most recent version a couple posts up to get compiled cubin files for archs 1.0-3.0

Erm, the only thing I might suggest is try cmake 2.8.9.. I vaguely remember there's some reason I needed .9??

What distribution are you running? What version of cmake?

I didn't create the miner. I just got it working with newer cards~ You can find the thread for the mining software here:
https://bitcointalk.org/index.php?topic=2444.0

xjzcuda.exe -url=http://pool.bitclockers.com:8332 -user=username -password=password -aggression=#

You do not even need to do -gpu for it to find and use the gpu.

I think the params i posted above were incorrect; Sorry, my bad.

Updated params in previous post in case anyone finds this thread.