The first time you run the cgminer.exe by just double clicking it, hopefully it will prompt you to set up some details (pool address, username, password, etc etc). If it succeeds without crashing and even beings mining you can press "S" -> "W" -> "ENTER" to save the config file with its default name.

Then you can close cgminer and edit the config file in notepad, or, change settings via the GUI in cgminer. Remember if you do the later you need to save the config file again after you've changed the settings.

And yes reading through all the relevant readme files will help you a lot.

Your list of parts looks like a gaming pc gone scrypt mining rig. The problem here is that if you are just going to use it for mining you've spend probably $1000 extra on stuff you don't need.

For example, that CPU is total overkill... people here use i3's i5's celerons or the AMD equivalents because they're cheap and because mining isn't CPU intensive.

SSD? Why? Just use an old 40 GB HDD or even a 500 GB from the sale bin at your local computer store ($20 - 30?).

You need to minimize your capital so that you can see ROI sooner rather than later. You should be operating your mining rigs like it's a business especially if you have invested $1000's in it only for the purpose of mining cryptocoins.

As for the PSU and motherboard there are plenty of threads on this forum about good hardware to use. Just use the search and browse the mining sections of the forum.

230 watt vane fan?  I thought the 55 watt one in my aircon moved a lot of air... damn.

Breakers arn't really designed to trip when you only just exceed the ratings of your wires or sockets, they're designed to trip to prevent catastrophic events like fires caused by short circuits. If you really want to impose a hard limit to the power drawn through a circuit, then add some fast-blow fuses in series with the load.


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

One reason why normal circuit breakers can't instantaneously trip precisely at the maximum continuous load rating of cables and sockets/plugs is because some types of loads (especially refrigeration pumps/compressors) can momentarily exceed (usually for <<1 second) those ratings.

In my country (Australia) all power boards must have overload protection at 2400 VA to prevent fires due to overload. These overload protection devices will 'activate' much earlier than a circuit breaker ever will.

If you are relying on your circuit breakers to protect you from a wall socket / wall cable fire then are in for a shock...

Woo fed ex even called to check delivery details, my miners had stopped in Hawaii for a vacation before I sentence them to hard labor for the rest of their lives.

Thanks again Canary!

Shhhh guy stop wrecking our fun.

Another thing to keep in mind is that Sony does not like randoms using their hardware for whatever they want (mining). Take for example with the PS3 where you could install linux for a long time, but then Sony released an update that entirely removed the boot to linux option and all support for it via the Sony GUI. Of course there are ways around this... eg. install earlier firmware from before that update.

This thread entirely assumes it will be easy to integrate mining software into the PS4 and also that Sony wont take steps to make the hardware incompatible for such purposes. But it's been shown that even low-mid range AMD cards will outperform PS4 in terms of hashing capability so I suppose it's irrelevant anyway.

What is CRT?

Ouch. Was it the SMD capacitor/resistors on that side or was there a power transistor or something on the other side of the PCB?

Sorry I think you misunderstood what I meant because my question was not very clear. I am using pools to give new block detection like all good solo miners should be. However my problem is that the pool 0 (127.0.0.1...) can't get enough work to do and so it resorts to the pools for work.

EDIT: I think I just found the problem, by solving another problem. I started to mine on some pools deliberaly and then noticed very high stales on 3 of 4 of my GPU (about 5-7%). The problem was my intensity setting was far too high (18) and changing it to lower values has helped (1-3%). Now when I go back to solo mining I have not seen cgminer report the error that pool 0 (127.0.0.1) is not providing work fast enough. This doesn't seem to be a problem for me on scrypt altcoins with slower block frequencies.

EDIT EDIT: It's still falling back to the pools for work... cgminer maintains that it is connected to 127.0.0.1 with LP but I still see it submitting shares to the backup pools. Its about 20 shares per 10 minutes so I am just going to ignore the problem for now, I am finding blocks solo mining while the occasional pool shares will be stacking up for eventual cash out...

Only if the distributed project relied solely on SHA-256 hashing operations. If it needed anything else the hardware would need to be redesigned or those operations performed on another device: CPU/GPU.

I find it is extremely hard to get enough work to solomine. cgminer just goes to the backup pools that I am using to provide new block detection. Anyone got some tips on how to fix this problem? I had 20 connected peers in digitalcoin-qt at the time and I followed the OP's suggestion about rebuilding the node/peer list to only give good ones, but seems the problem still exists...

Thanks guess I need to start saving ^_^

All the main wallet types support and encourage backup (in various ways). Don't be a victim of the entropy of the universe.

Ugh when these threads pop up in the Mining Support subforum these are always the hardest to solve (sometimes they are not solved).

My suggestions are:

- If you have not yet purchased anything, do not buy motherboards with onboard display(s), ESPECIALLY if mining with the rig will be its only purpose

and/or

- If you must, only buy hardware with onboard display devices if it has been shown to be compatible and mining nicely with cards as well, and there is information about how to set it up: eg. if there were any known problems with drivers or specific BIOS configuration required.

You'll have less headaches, seriously.

OP could only use ASIC if his work included only doing SHA-256 hashing over and over.

Lets face it, he's not. He needs GPU's.

Unfortunately most bitcoin miners are trying to minimise their capital by making open air designs that arguably are not suitable for OP. That way they reach ROI much faster. Wheras in OP's case it seems that they have more or less limitless money to throw at the problem. Good luck with that.

Out of curiosity, how many tens/hundreds of monitors do you need to be running at max res to take advantage of dual 7990s?

To the others in this thread: I thought we'd already demonstrated several times that litecoins enhanced profitability makes GPU mining still potentially profitable for some people (depending on electricity costs). While everyone's situation is different, you can google the profitability calcs and work out for yourself if its worth it. To say outright that GPU mining is completely dead ON ALL COINS is laughable, but I agree for directly mining BTC it has become unattractive.

I am still mining altcoins on my meager 1.2 GH/s of GPU's in Australia at $0.28 /kWh and making a profit on a weekly average, plus getting free heating in our winter. How is GPU mining dead again?

They will still be worth a lot for a while, even when most people find the power costs to run them are no longer worth the return, because there are always people who have free power, or extremely low electricity rates.

We see the same things happening right now... people setting up litecoin farms in their free-electricity residences etc.

I think it should be OK. But if you are generating addresses in bitcoin-qt on one of the clones you are operating then the others will not have the private keys on them that belong to those addresses.

Also have a backup of all the things (you should already). https://i.imgur.com/QnG6i3j.jpg

I have no idea how they can pull that off. Do customers shipping lots of items get amazing discounts, or is the UPS calculator not worth a shit? Although A Mercury will apparently be 160 x 160 x 200 I put in 30x30x30 cm, I assume there will be some kind of things that need to go in the box, and of course packaging to keep it safe. (EDIT: I used the UPS quote site again... still over $400-500 for 16x16x20 cm... )

I'll take their word for it that they can ship for that price, but I still don't have $2167 anyway.  

Also is the price shown for the units on their site USD? I suppose they could be doing geo-ip nonsense and it's in AUD, to me it doesn't seem so hard for them to add the currency to the end of the price.