Originally Posted by cam51037
Originally Posted by fragamemnon
Right-o. First of all, I would like to apologize for probably asking the same question for the hundredth time. So please bear with me or feel free to ignore the post.
I haven't really spent a lot of time researching this, but I am considering the following and I need your opinions.
An R9 290X used for mining ~17hrs daily at minimum.
Power costs me a total of $.09/kWh (with all taxes included). Assuming the card + PSU inefficiency give a power draw at the wall of 300W, this would be $0.027/hr (or assuming 17hr mining -- $0.459 daily costs).
Would you even consider it if you were me? I'm leaning towards LiteCoins but willing to look into other alt currencies as well.
Assuming we're talking about 2560SPs (and not the optimal 2816) if they scale accordingly with all other resources allocated properly (and the mem frequency tuned as well, of course) that would be a ~25% increase not taking GPU clock and everything else into consideration. Let alone the 37.5% increase 2816SP would allow for.
Well let's say a R9-290X gets about 1.2MH/s. I think that's a fair speed considering it's faster than a 7990 which gets about 1.1MH/s if I remember correctly.
You need to add in power for the rest of your PC as well to be accurate, so let's say 400W while mining.
At current difficulty you'd be making around $2 per day with multipool, or around $1 a day with a certain coin after power costs. So it would take you anywhere from around 1 year to 2 years to break even at current difficulties.
Now you've gotta factor in how much these currencies have changed the past half year and think about that too.
This is a valid point you have made and I was also thinking over difficulty factor and coin prices. However I haven't monitored them and I can't afford to spend the time for the study I need to conduct over them in order to define patterns in behaviour and come out with a prognosis. Could you perhaps elaborate on the shift rates in a very
Also, the general idea is that I will stick the card in my current rig and work out a way to use them simultaneously.
680 dedicated to folding;
R2D2 caters to the rest of my needs and gets its GPU time put into bitmining. (This is why I also didn't factor additional CPU power draw, etc. It will come with the most of one core dedicated to it by my calculations, but when we take into consideration that right now I "idle" at around 60% CPU when only servers and folding is up, it wouldn't be a deciding factor.)
And also I do not strive to get the money I shelled for it back. Rather I'd be interested in something more realistic, like making up for the total power bill (read: folding power costs).
And $2 per day actually sounds quite attractive when we take the fact that the average pay in Bulgaria is the equivalent of US ~$450. My pay is considered wonderful (being a student and such) and it equals out to $690 after taxes.
But then again, I suppose multipool profits will be able to get harvested at a further point in time? (I haven't read on it and I assume it to be "Mine on X pool until Y pool becomes more profitable, then back to X once Y offers less profit")
Thank you for the feedback, I genuinely appreciate it.