Any opinion about this card? Anyone has it?

http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1227&lid=1&pid=2091&leg=0

What setting you using to achieve that, or more specifically, how much did you undervolt and what's your core / mem speed

So if I understood this right, you choose a plan and according to the plan you can mine with 1,2 or 4 cores? So essentially this is for CPU mining? Is it even worth it? Can you get your monthly ROI? Probably not or else everyone would have done it already, including the hosting company.

For now Market will stable in the upcoming years and so will the price.

Thanks a lot for the replies!

Which Sapphire r9-290 are you using? Here's a list http://www.sapphiretech.com/presentation/product/?cid=1&gid=3&sgid=1227&pid=0&psn=000101&lid=1&leg=0

As the title implies: Will be able to power 3x r9 290 with a single 1000w PSU? I can get this Tesla R2 1000W for rather cheap.

Bump for shame 

He can, question is, will he? 

Source? Especially on the 'ever' part

1. Is this a good mobo for a 3x GPU mining rig? http://www.asrock.com/mb/NVIDIA/M3N78D%20FX/ or https://www.asus.com/Motherboards/M4A77T/#specifications
2. What exactly do you look for in a mobo for mining?
3. How can you determine how much power your GPU will consume during hashing (say at intensity 18) so that you can buy the correct PSU? Planning on getting 3x r9 290 and according to this forum a 1000w psu (gold) will be enough.

How much ? I'm a bridge collector.

Thanks a lot, exactly what I was looking for!

To the best of my knowledge, exchange prices are a result of how easy / hard it is to withdraw / deposit money in said exchange website, as well as how big the exchange volume is.

As title says, is there such a "profit" calculator?

Because so far the following calculators (unless I'm missing something) don't do justice with difficulty increase, and kinda, well, overlook it:

http://www.bitcoinx.com/profit/
http://bitcoinminingcalculator.org/index.php?ghs=180&diff=1789546951.05&cdiff=1789546951.05&fee=2#nextdifficulty (was closest I could find, but it only does it for the next increment and that's it)
http://www.coinish.com/calc/

According to Bitcoin difficulty history, there has been average of 30% increase in difficulty every 10 days +- since mid August and I couldn't find a calculator that will do a 30% difficulty increments every 10 days.

P.S. I tried to search the forum and couldn't find.

Is there any particular reason I am being ignored by bitmain?

Not that it matters, as I got confirmed by MtGox (cheers ^^) today so I'll be taking my money elsewhere. But seriously, horrible customer service.

Bitmain, check your PM please.

I know it'd be better to buy using BTC but I currently haven't got any and I'm still in the validation period in the markets where you can buy.
And honestly I wouldn't mind if he'd post the sale on eBay and I'd buy it via there, though eBay takes a big cut which is a shame.

Anyway, original question was addressed for BITMAIN.

Possible to pay via PayPal? I have yet to accumulate enough BTC (and I can't buy via MtGox or other websites as I am new to the BTC scene and have yet to be verified on those websites though I have sent my verification documents to a few already).

You're using a colocation?