I've gotten so used to the noise that i tend to get tired when i visit our data center. it's rather soothing.   the. gigabytes aren't a problem.  it's the sapphires that. could keep me awake at nights.

very much so.

How about the EUR is the alt to the USD.  But that too will probably not get past your predisposition.

Interesting.  I like the effort but...

$100 for a water block per GPU for an extra 100kH/s not including the pump, reservoir and risk associated with water cooling.

If the cards run about 399.99 each that is an additional 125%  But my hashing power goes from 700 to 800 which is a 14% increase.  It's not worth it unless you can get it up to 900kHs.

It's true.  My accounting factors in resale value for the rigs I build, subtracting depreciation, it's a sizable chunk of change.  On the other hand Bitcoin FPGAs had a high resale value up to the point ASICs came out.  Now they are drastically depreciating.

And everyone's variables are different.  Like people in this thread have mentioned.  Some live in areas where electricity costs are prohibitive to mining others have offloaded the electrical costs to their landlords, employers, the parents they still live with.  We can't determine if the FPGA are viable just because its not viable to ourselves.  There will be a market for it.  People with high electricity costs will buy it outright.  Others like myself pay anywhere between .07 to .14 USD per kW.  I have to determine if buying FPGAs (paying the premium over GPUs for them) is better than the rates I'm  paying plus the additional investment in adding more service, or finding a location to run them from.


I don't think FPGA will break LTC coins.  I'm expecting that they will be priced factoring the electrical savings one would get and a premium to to their initial scarcity.

if it doesn't work (cgminer reports the card SICK/DEAD) you need to short the PCI slot.  There is a thread on the forum somewhere.


What is the make and mode of the card? 

This is what I used to use when it was just 3 cards...
C:\guiminer-scrypt\cgminer\cgminer --scrypt -o YOURPOOLURL -u USERNAME -p PASSWORD -I 20 -w 256 --lookup-gap 2 --thread-concurrency 21712 -g 1 --auto-fan --auto-gpu --temp-target 75

I added  --gpu-vddc YOURVOLTAGE(1.0) and tweaked it and -I (20) until I could get all 4 cards running stable.


Kill-a-watt meter.  $20 and you can get it at newegg or amazon.

undervolt.  I got my kill-a-watt meter so I can fine tune it.  before that it was tweaking until they all ran stable.  It was about getting 4 cards in a crate and airflow.  If you are concerned and you have space I would go with a 1000w or 1200w.  Or buy a 1600 so you can upgrade to 6 cards per rig in the future.

The slot adapter was the cheaper at the time and I had a bunch of x16/x16 risers.  I buy parts used (ebay) when I can.

competition is good.  it spreads the miners out and lowers difficulty.  you can't mine both LTC and FC.  

this is the way traders operate. its actually healthy. it means the market is liquid and is trading on external events not just on hash rates and difficulty alone. if this keeps up crypto currencies will be main streamed in 5 years time.

what coin do i believe in? like what do you mean? are these coins like unicorns and wizards or something, bearded sky gods chucking lighting books from the clouds? for crying out loud they are currency a freaking medium of exchange. i have a good or service i need in exchange for one that you have. we use coin as the intermediary. it like language you can have hundreds of languages to exchange ideas. if two people don't share a language they get translators. coins are the same thing. if i don't have the coins you want i trade mine for those and give you them, then you provide the good or service.

what is so hard to understand about that?

Moved my rigs back.  Thanks viper.  Kudos to you.

Also I've been fully funded from the old pool.  Exactly what it should have been. 

Your are way out of the ball park.  Its all about the hashrate/$
This is the amount you will generate per day using identical hardware for the 3 currencies.  This excludes FGPA and ASIC because they are price disruptors and not everyone owns them.

	C/d Mining	Hash(eq)	$/d
BTC	0.3026	5400	$45.52/d
LTC	17.889	7200	$55.10/d
FC	1212	7200	$172.104 - $24.26/d*

* based on a wide range of BTC or LTC/FC conversions

The average miner could generate anyone of $ amounts per day depending on which coin and pool they mine at.  Right now LTC is overpriced relative to BTC.  This is probably due to a flood of new miners because of the cryptocoin publicity and doe to the difficulty spike as the ASICs dominate BTC mining.  If anything it pays more to mine LTC that it does BTC.

FC is still a question mark as it is not really tradeable.  Or it is difficult to trade as the market is illiquid.  Hence why it could be profitable to mine or worthless to mine.

yes per machine.  I hope that my per machine average goes up over time.  I've been doing a lot of tweaking so I have significant downtime.

over the last week my average is 1800kHs each at 700-800w for 4-5 LTC/day,  so 5400kHs total and 2.1-2.4kw for 13-14LTC/day
At the $2.50/LTC it was a total of $35/day or net $30(post electricity bill)

Ideally they should get 2400kHs each at 700-800w for 6 LTC/day,  so 7200kHs total and 2.1-2.4kw for 24LTC/day
At the $3.18/LTC, $60/day or $55/day(post bill)

Its a matter of timing and difficulty level.  It gets hard every week to mine.

sorry didn't mean it to com out like that.  I must have just got into hardware pissing contest mode.  anyway  I sent you a PM with my specs.  Maybe you can use it.  Good luck.

great job!  much faster interface.  will the old site still be available.  I have some FC there that I need to payout but I can't get onto the site to cash it out.  I keep getting timed out.

$2,399 for 3000 kh/s on 7970s  1.2505kH/s/$

3000 kh/s is pretty high estimate.  What is the average kh/s these unites generate.  You can't tout optimal for layman miners.  When they see that the rate is subject to other factors like pool or stratum support, room temperature, etc  they will be pissed.  You should back off your number by 10%

Example, I get 2500kHs on average.  If I just use the mining hardware comparison numbers (which are probably overclocks or best numbers) I could say I get 2600kHs.  And my hardware totals $1700 with S&H.  I get 1.529kH/s/$  plus I can expend by 2 more 7950s.  So that would net me 3800kH/s for $2300 or 1.6522kH/s/$.

I think charging + $400 per machine is a rip off.  You can build 1-2 machines an hour.  If you charged $2199 for them then I could see the value.

exactly!  There are huge arbitrage opportunities between currencies, cryptocoins, markets, pools, etc.  Anyone that is pounding the table for 1 or a few coins is an idiot as there is more money to be made by identifying these opportunities and jumping on them before anyone else.

Man on earth can no more get rid of these demonic "heavens" than man can by airplane or rockets or other means get up above the air envelope which is about our earthly globe and in which man breathes.
Watchtower Bible and Tract Society, The Truth Shall Make You Free (1943), p. 285

A rocket will never be able to leave the Earth's atmosphere.
The New York Times, January 13, 1920. The Times offered a retraction on July 17, 1969, as Apollo 11 was on its way to the moon.

To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth—all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances.
Lee De Forest, American radio pioneer and inventor of the vacuum tube, in 1957 De Forest Says Space Travel Is Impossible, Lewiston Morning Tribune via Associated Press, February 25, 1957

Television? The word is half Latin and half Greek. No good can come of it.
C. P. Scott, BBC History of television

What can be more palpably absurd than the prospect held out of locomotives traveling twice as fast as stagecoaches?
The Quarterly Review, March, 1825.

That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced.
Scientific American, January 2, 1909.

Where a calculator like the ENIAC today is equipped with 18,000 vacuum tubes and weighs 30 tons, computers in the future may have only 1,000 vacuum tubes and perhaps weigh only 1½ tons.
Andrew Hamilton, "Brains that Click", Popular Mechanics 91 (3), March 1949, (pp. 162 et seq.) at p. 258. Notwithstanding that events have proceeded greatly since the prediction was fulfilled, this was a correct prediction in the short-term.

There's no chance that the iPhone is going to get any significant market share.
Steve Ballmer, USA Today, April 30, 2007.

There is no reason for any individual to have a computer in his home.
Ken Olson, president, chairman and founder of Digital Equipment Corporation (DEC), in a talk given to a 1977 World Future Society meeting in Boston. This is widely quoted but Olsen claims it is taken out of context, that he was not referring to personal computers but to a household computer that would control the home.
Reference: "Ken Olsen", Snopes, includes bibliography.

http://en.wikiquote.org/wiki/Incorrect_predictions

thanks all

supply and demand.  who on earth valued BTC at 124 each?    don't complain about it, instead capture the arbitrage.