In the latest 32 bit version I found that siad cannot be run. The package may have included the 64 bit siad.exe by mistake?

You can shift+right click the SIA folder and open a command prompt with the location already set.

Or just make a batch file.

I'll bite. Got at least 10 TB laying around unused.

I hope there are at least 2 other fans on the other side of that radiator 

The continual development of new algorithms for GPU's seems to not let them die out. The concept of GPU mining seems to be a self perpetuating fantasy empowered by the GPU miners themselves.

If you live where electricity is cheap, eg. USA/China/etc then you may still be able to make a profit versus electricity cost but to turn a profit and pay for your investment is another matter. Most places around the world though it is simply impossible to make a profit. Another factor to consider is the time and effort setting up GPU systems and ensuring they are stable with the endless new algos. This takes a lot of time and time is money for most people. IMHO better to get a rock solid ASIC and mine with cheap electricity if it is available and see what comes of it.

I worked for a small company and it took a long time to convince my superiors (inc. owner) how much web development costs. They eventually apologized after when they went around me only to find exactly the same figures. $1.5m+ is totally reasonable for a large development like I assume this new site would be.

20 watts over a year is  almost $60 here in Australia so yes, lights and bezels etc are wasteful if your electricity is expensive...

I love how threads like this appear around any time the price has dropped considerably. Likewise you see it on reddit and other tech sites too. When the price drops mining is suddenly worthless, small software bugs become network-threatening or simply "the death of bitcoin", and everyone who's ever known anything about bitcoin is someone who you should feel sorry for.

But wait until the next price boom and wow, suddenly bitcoin is the #1 cool thing to have: the most trendy geek possession imaginable ("make MONEY with your GTX99999 COD-Renderer after your parents have sent you to bed"). Bitcoin becomes once again the magical internet money system that news anchors struggle to understand or explain. After all, how are those basement dwellers printing money on their computers and buying their parents house with their profits? It's again what the non-tech-savvy read about whilst starry eyed about how this new thing will let them retire at 35, or buy that Italian power yacht before they develop arthritis. And of course, if you don't have at least whole-integers of bitcoin in your possession during a boom phase, well, why haven't you bought more yet?

When I started mining bitcoin they were worth <$0.30 USD each. I once sold over 400 of them to help pay part of my power bill. Back then bitcoin was a novelty to throw unused computer resources at, not many people would have expected them to reach a high value in the near future. Now only a few years later and they're worth $400. They were worth (gox-manipulation-vs-real-value-of-the-coins arguments aside) >$1000 for a while. Most people now have heard of bitcoin, thanks in part to conventional media. Every now and then I come across someone who I find out is a miner or who actually has some bitcoins or altcoins. I assume there are more who do not wish to share this information with me, and good on them, it's a smart move. Bitcoin has some challenges, especially with adoption by non-tech savvy (My cat pulled the cable from the Wi-fry thing again, Now Mozilla says something about a page? Should I buy a new laptop?), and those who simply do not care about their money. So I consider bitcoin to not be a failure.

You need to consider that for most battery types you cannot take the Ah rating and assume you can use 100% of this, because, cycling most kinds of batteries that deeply will permanently damage them. Be sure to carefully review the manufacturers tech sheet and find the max discharge depth, THEN calculate the "real" Ah rating from there. You can use this to calculate watt-hours or joules stored, which is a more meaningful piece of information for sizing your solar setup.

Also the 6 hour charging time above is unrealistic for a full charge for most battery types. Again you need to see the manufacturers spec sheets.

Cycling batteries between deep discharge states and back to their full capacity on a daily basis will also reduce their lifespan a lot more than usual as this is not considered standard operation. Arbitrary example: Most lead acid car batteries are discharged only less than 3% of their total capacity when starting a car, this will get them 3-5 years. Now take the same battery and discharge it 25-50% every 24 hours (if it's even possible to recharge it within spec limits that quick). Suddenly it lasts 6 months to 12 months tops.

A lot of people "make" battery storage systems for solar without researching how much they can drain their batteries, and how low of a voltage they can be taken. There are newer types which can take more punishment but there are always limits. I know a handful of people who've purchased various setups on ebay and of their own design only to wipe out $5k of batteries in half a year.

This is correct, deionized water has very high affinity for any impurities, partly because water is such a good solvent. It will leach from solid metals, and pull CO2 from the air and become conductive again quickly. There are some high voltage systems that use deionized water as a insulator and to remove heat, eg some XPS instruments use this setup (and far-fetched projects like Sandia's Z-Machine). However, they have a deionization system that automatically turns on periodically to polish the water, but these are extremely expensive: it'd cost more to setup these than a few mining boxes.

Mineral oil will siphon itself though plastics and insulation of wiring so be careful. I had found mine that ran for a few months had oil pulled more than 2 meters through a 3m USB cable. Even uphill. It'll make a mess, increase fire hazard, and make the cables firm (they may snap or insulation will flake off if you bend them).

Remove the oil from boards by first letting it drip, then immerse in mineral turpentine or shellite (other names: light petroleum distillates / white spirits / hexane). If you used mineral turpentine (which has a lingering smell) you can remove this by then immersing it in undiluted methylated spirits and fan drying for several hours / overnight. (And hope during all this that those electrolytic cap cans are 100% sealed).

tl;dr - I would not go down this path again.

Yeah, very distinctive http://www.techpowerup.com/reviews/EVGA/SuperNOVA_G2_1300/3.html

It's not "free" electricity if he's paying for hosting. A % of that hosting fee is to cover their electricity costs, based on typical consumption of a typical client. Hosting companies arn't going to take a hit to their profits because they're nice people. Likewise if he and others in that DC start to raise their power consumption noticeably then those costs are going to be passed on at some point. On the other hand if he means he's renting residential space, then he'll have some questions to answer when the landlord gets a powerbill that's hundreds of % higher.

Only 0.00000002 yottahash nothing to get excited about really.

Apparently holding 10m doge for the last few months was a bad idea.  

Old wiring, old PDUs, high amps and an OP who isn't really an electrician but wishes he was. What could possibly go wrong.

I agree with the others: OP should get a qualified electrician to do this work.

B looks like it would get rained on. I assume Madrid does get some rain, at some point in the year..

Yes it would work. As was pointed out a few replies up, you need to match the novec product with the temps you want to aim for.

It is evaporating. If you did it in an open container, it would all eventually boil away: just like if you boiled a pot of water on a stove for long enough. The idea here is that you operate it in a closed or semi-closed environment, where the evaporated gas vapor is then condensed on some cool object (a heat exchanger or heat sink of some type). The condensed liquid will then drip down back into the bulk of the liquid around the hardware being cooled and this process repeats indefinitely. It's actually the same thing that is happening inside every fridge/freezer and air conditioner, except this time we're cooling something that's inside the cooling loop itself.

I suspect that smracer has a good deal of capital to throw at this project. And I suspect he's partly doing it for fun too. The reason I say this is that these liquids are extremely expensive ($250-350 per litre usually) and results in a relatively complicated system compared to using normal heatsinks and fans. Usually the only reason to do phase change submersion cooling on a large/commercial scale is to obtain obscenely high hardware densities, where space is of #1 importance. For example, this case:  http://hongwrong.com/hong-kong-bitcoin/

If you are getting sick cards, then most of the time it's simply too high memory clock or core clock, or cards running too hot.

Hook card up to a monitor, and run OCCT GPU stress test with error checking mode. Or you could use furmark which has similar features.

Run the card at the clocks you intend to mine at, using the most brutal shader/ram settings in those programs you can. This will reveal if the card is stable at the card's "maximum utilization" aka maximum power and heat that any miner algo could possibly throw at it.

Be sure to let the card temperature ramp up and equilibrate for some time, before judging if it's stable. If it's not, improve fanspeed and/or lower clocks.

Also something to keep in mind, with the new algos that use very little power, is on many cards you can undervolt the cards quite considerably. Because efficiency/clock speed is a non-linear relationship, you can find that for example a decrease in voltage of 10% will give a much greater than 10% improvement in efficiency. For some R9 270 cards for example, a 10% reduction in voltage will give about a 30% improvement in efficiency. This improvement is so dramatic because most of the R9 series is clocked at the factory right up to its stability limit anyway. tl;dr - unless you have free power its better to improve efficiency rather than striving for top-notch clock frequencies.

Yep I've mined about 100 BTC at least from CPU/GPU days. Of course, I do not have them today, I had power bills to pay and at that time mining to me was just something to keep my computers busy while they were running other stuff, I dont think many early miners had the foresight or true-believer-yness that bitcoin would become "something big".

My systems used to run computation tasks (BOINC projects) specifically the GPU accelerated ones. At that time I had 4x 4870x2 cards donating to those projects, and a few other random cards, meanwhile other people were solo mining BTC (which I had not heard about yet). Makes me very sad to look back and see my wallets these days, and mining maybe 0.01 BTC/day at most... soon to be 0 BTC/day.