Cryptocoin Mining?

[philipma1957]

Anybody buying bitcoins on ebay for much more than they are worth is clearly not a genius. You should avoid selling to them.

Of course, this logic applies to most of the items I've sold on ebay...hmmm.

my thoughts are about the same.

I figure sell in 3 coin lots. that way when a cheater comes along the loss would be small.

 

[RussianSensation]

wow so this became an interest again?, started to read bitcoines when i heard the whopping hike in its worth last year, would it be worth getting into this now? I recall the 5000 series ati card where the best bet is it now the 7000 series? I live in an apartment complex where electricity is a flat fee and not by consumption lol !!(this might change in near future though) Because of that I am seriously considering getting in to this just need to know what video card will be the best value in pumping coins quickly.

Probably an overclocked HD7870 for $240-245 or HD7950 for $300-320.

Here is the math:

HD7870 = 1000mhz clock speed x 1280 Shaders x 2 Ops / cycle = 370 Mhash / sec => 1.60 Mhash / $1 spend
HD7870 = 1200mhz OC = 440 Mhash => 1.83 Mhash / $1 spent
HD7950 = 880mhz x 1792 Shaders x 2 Ops = 455 Mhash => 1.47 Mhash / $1 spent
HD7950 = 1100mhz = 568 Mhash => 1.83 Mhash / $1 spent

So for stock speeds, 7870, for OCed, not much difference. If you hit a higher OC than 1100mhz on the 7950, then it starts winning, but you have higher upfront cost.

 

[Mir96TA]

I am a causal minner.
I usally mine at night (11 pm 10 am) via Gpu. I am doing with Eclipsemc. However I hardly seems
to get coing generated.
I do think ASIC are in the network........... Other wise it can't be that bad
Sheesh.........
Talk about some sweat shop work out.............

 

[Mr. Pedantic]

I am a causal minner.
I usally mine at night (11 pm 10 am) via Gpu. I am doing with Eclipsemc. However I hardly seems
to get coing generated.
I do think ASIC are in the network........... Other wise it can't be that bad
Sheesh.........
Talk about some sweat shop work out.............

I don't know what GPU you have, but with my 6950 going 24/7, I get almost exactly 1/7 of a BTC a day, or 1 BTC/wk factoring in my actual usage of the PC. I don't know what you mine with, but at 11 hours a day, even if you had a 7970 you probably won't be getting that much more than me.

 

[Mir96TA]

Well I push roughly 1 GH/s for 10-11 Hrs.
I think my prob is worker choice. I have choosen DGM (default) or I can change to PPS.
Not sure what is best in my case

 

[Vesku]

You should be using PPS since you mine in spurts. Pay Per Share means you earn at a steady rate where as DGM is less steady since it means you are reliant in the pool solving blocks.

I do not believe ASICs are operational yet. The current difficulty is easily explained by the current going rate of bitcoins, how well the 7000 series mines, and more FPGA units on the network.

 

[philipma1957]

wow so this became an interest again?, started to read bitcoines when i heard the whopping hike in its worth last year, would it be worth getting into this now? I recall the 5000 series ati card where the best bet is it now the 7000 series? I live in an apartment complex where electricity is a flat fee and not by consumption lol !!(this might change in near future though) Because of that I am seriously considering getting in to this just need to know what video card will be the best value in pumping coins quickly.

you are in a good place to do this. I have found a few tricks. if you can get a deal on this card;

xfx hd 7970

http://www.newegg.com/Product/Produc...82E16814150596


It underclocks well. why is that important. I get 480 hash from it but it runs cool it runs quiet.

I can set it at .880 volts and 820 . and get a 480 hash rate

I can push it and get 620 hash by setting at 1.1 volts and 1000 but it runs loud and hot.



Same goes for the msi 7950

http://www.newegg.com/Product/Produc...k=msi%20hd7950


my method of under clocking gets lower hash rate. but my hash per watt ratio is 3 to 1.

when you overclock and over volt your hash per watt ratio drops to 2.5 to 1. all of that is heat loss.


so if yo want the card to last longer run quiet. either one above underclocked is pretty good.


overclocked which with free power is more okay to do the msi 7950 is better.

 

[Mir96TA]

You should be using PPS since you mine in spurts. Pay Per Share means you earn at a steady rate where as DGM is less steady since it means you are reliant in the pool solving blocks.

I do not believe ASICs are operational yet. The current difficulty is easily explained by the current going rate of bitcoins, how well the 7000 series mines, and more FPGA units on the network.

Yea I think I rather take 5% Cut and start using PPS.
BTW what is the difference between FPGA and ASIC ? aren't they are same ?

 

[gorobei]

fpga is a chip that can be programmed to do many different functions.
asic is a chip hardwired to perform a specific task.

both are relatively more efficient in terms of power than gpu(which is a kind of asic), but a chip that only does crypto hash will obviously be much smaller and efficient than a gpu with tons of vector and raster elements that process the crypto math thru the api.

 

[Mir96TA]

fpga is a chip that can be programmed to do many different functions.
asic is a chip hardwired to perform a specific task.

both are relatively more efficient in terms of power than gpu(which is a kind of asic), but a chip that only does crypto hash will obviously be much smaller and efficient than a gpu with tons of vector and raster elements that process the crypto math thru the api.

So FPGA is a progamble Chip runs through APi; sorta like CPU, GPU........
ASIC every thing works at wire speed cause it made for application specific.
Thank You

 

[VulgarDisplay]

What should I set my extra flags at on a 7970 in GUIMiner? I'm brand new and I don't think I'm doing anything right lol. Trying to pay this card off before bitcoin dies.

 

[chimaxi83]

My flags are set to -w 256 -f1 (thanks Russian!). I change the f flag to f15 or 20 if I'm using my computer for anything, that flag dictates how much CPU usage the miner will get, with 1 being the highest amount. I haven't really noticed too much change in having it at 1 or at 20, other than when I'm using Chrome with a load of tabs open. I also leave CPU affinity at 7, giving it one core. Not sure that really makes any difference either.

Those settings get me ~700 Mhash at 1200 MHz.

 

[Fire&Blood]

This is what I get with my OCed 7950, PPS (it looks like I can't change to DGM, or I can't find the setting in deepbit)

Now it may have been simply randomness but I noticed that despite steady MH/s, my earnings have dropped by ~7% for the past 2-3 days.

 

[blastingcap]

Difficulty has gone up and will erode your earnings by eating more hashrate to produce the same amount of coins = less coins per day. The more we bump this thread the more people will see it and they will start mining and telling others to mine, who tell others to mine, etc. exponentially. RS thinks it's a negligible effect but it adds up when you multiply it across all the forums on the internet.

By the way, at the 11% rate that difficulty has increased and accounting for the December rewards halving, you will make only ~12.5% of what you make today by that point. So if you were making 8 bitcoins per day today, you'll make ~2 bitcoins per day by December, and likely a LOT less than that if ASIC mining starts before then. Bitcoin prices are driven by demand, not supply, so don't expect prices to octuple or anything.

 

[Fire&Blood]

I cashed out a few tonite again yet I'm thinking about how much the early adopters have made by now. And I don't mean the guys with farms of crossfire setups but an early adopter, a dedicated miner with 2-3 rigs at the most. Some of them must have cashed out at ~$14, how sweet must that feel?

At my old job I had access to a dozen of work comps, IIRC none had AMD cards but that would have changed :biggrin: LOL If I had the chance, I would probably "break" in after hours and upgrade all the comps, the tools using them would have never known. Shit I could have even worked out a deal with the admin running the WashU radiology servers and the spacious, 65F ambient temperature server room that no one else has access to.

Even if it does die soon, I appreciate bitcoin because it proved me wrong. I was a narrow minded "infidel" up until recently, convinced it's a scam.
Whatever little amount I end up making until (if) BTC is no longer profitable, I'm grateful for it. I may be exaggerating and going off topic a little here but I think it provides a optimistic glimpse into the future, where the burden of providing for a living can be lessened by dedicated machines on "cruise control" that supplement our income for I don't see currency going away anytime soon and I won't live long enough to find out if Cpt. Picard was right about that.

 

[RussianSensation]

Difficulty has gone up and will erode your earnings by eating more hashrate to produce the same amount of coins = less coins per day. The more we bump this thread the more people will see it and they will start mining and telling others to mine, who tell others to mine, etc. exponentially. RS thinks it's a negligible effect but it adds up when you multiply it across all the forums on the internet.

AT forum is only ranked below 3000 on Alexa and the average user spends just 2-3 minutes on our site a day. You really think almost 10s of thousands of HD7900 owners joined bitcoin mining because of our thread? It couldn't have possibly have anything to do with bitcoin opening up to Middle East and North Africa at the end of July? You realize bitcoin is being discussed all over the Internet such as published on Forbes here, here and here and this type of global exposure for bitcoin will generate way more interest and traffic than this thread? Based on this thread, I am guessing maybe 300-400 more HD79xx series cards were purchased, I doubt more than that. That doesn't explain why the difficulty rate keeps skyrocketing since 500 more 7970s can't explain it.

Difficulty has gone up and will erode your earnings by eating more hashrate to produce the same amount of coins = less coins per day. .

That's how it has always been. I remember when I first tested out bitcoin with my HD4890, it made > 1 BTC per day. Worst case scenario most of us got free or partially paid GPUs out of it. I don't think anyone here expects GPU mining to be viable for another 12 months. We knew the window is closing. There is still enough time to get a 2nd or 3rd 7950/7970 and pay for at least half of it. For people who game on the side, this was a great way to not waste $ on NV and save it towards a future GPU upgrade.

 

[philipma1957]

...

Based on this thread, I am guessing maybe 300-400 more HD79xx series cards were purchased, I doubt more than that. That doesn't explain why the difficulty rate keeps skyrocketing since 500 more 7970s can't explain it.
...

I now have a 2800 hash rate.


3x 7970's and 3x 7950's all thanks to this thread.

I would have had 1x 7950. my hash rate of 2800 is due to underclocking. I cut down heat and fan noise.

I get about 410 for each 7950 and 520 for each 7970.

 

[Dum3]

Today i bought one HD7870,i think i found a very good chip for mining,getting 405 MHASH/s.

Default voltage was 1.208 at 1050 core,however the core is great,runs @1.043 at 1100.Downclocking it has no logic because 1000 still requires 1.015 and 1.043 still is a damn good voltage for mining and draws far more less power than 1.208.

In love with this card already :biggrin:

 

[mykemyk]

Ok I need help. I bought 2x5850's. Both are plugged in and both work. I cannot get both cars to work at the same time though. Afterburner shows that they are functional its just thet one uses 100% usage and the other uses 0%. Crossfire is enabled and it doesnt even work in games either. im using the bridge connector. My bios shows that both are running at 8x each. My motherboard is Asus z77 v-pro. Everything else works perfectly. I have tried using 2 miners with no use all it does is share the mhash of one gpu. HELP

 

[Dum3]

Disable crossfire,then select each card individauly in your mining client

 

[Mir96TA]

Disable crossfire,then select each card individauly in your mining client

Plus each should have a monitor or dummy plug should be pluged in

 

[blastingcap]

RS, nice straw man. I'm not blaming this forum discussion for the ENTIRE difficulty rise, that would be ridiculous, WTF? And yes, other, larger forums have more of an impact (e.g., it took a lot longer for news of the Korean monitors to gain traction here, but those monitors were massively discussed at OCN early on). Also, you are basing things on Alexa which is way too coarse, when there are finer-grained data to base your guesses on: At any given time there are several hundreds of people on VC&G, multiplied by the course of the day, multiplied over the course of the last few months when this thread got rabidly bumped up, multiplied by all the lurkers who never register or post anything but do see the top threads on VC&G (this one has been rabidly bumped up in the last few months), and multiply that by all the people who to talk to their friends, who talk to even more people, etc. and that can easily add up to a million eyeballs a month on VC&G alone.

Also, there was a huge spike in difficulty last summer, and due to the timing of the hashing power it was likely mostly due to existing owners turning on their cards, not people rushing out to buy new cards. This time around there is a larger installed base so % rise is slower, though 7900 series cards do mine a lot faster and each FPGA mini-rig is ~50GH/s (the equivalent of several dozen 7970s' hashing power), so it does add up. If we estimate the effect, including people who talk to people who talk to people, and remembering that the vast number of forum readers aren't registered users (this forum is a lot bigger than just registered users), to be the equivalent of 2000 overclocked 7970s getting turned on (new or existing cards including older ones--the 58xx series is still one of the best for mining--and FPGAs), then 2000 oc'd 7970s = ~1.3TH/s, which as recently as a couple of months ago would be more than 10% of the entire system hashing power. Even at ~500 7970-equivalent units like you are estimating, that's still 0.33TH/s or a little under 3% of the entire mining system a few months ago, not too shabby for a little forum on the interwebz.

Btw, I find it hilarious that sometimes when I am Googling for info, one of the top results is a thread in this forum I remembering reading earlier.

snip

 

[Zargon]

Disable crossfire,then select each card individauly in your mining client

I did not have to do that with CGMINER

 

[VulgarDisplay]

.02 bitcoins over 8 hours. Is this profitable? I crave instant gratification.

In the winter months this would work out great it's like 90 degrees in my computer room right now lol.

 

[philipma1957]

.02 bitcoins over 8 hours. Is this profitable? I crave instant gratification.

In the winter months this would work out great it's like 90 degrees in my computer room right now lol.

okay how much is your hash rate? and how much power do you use?

My hash rate is 2.6 ghz I use 850 watts.

I earn a coin a day. so i earn 330 a month minus the juice.

my juice is 120 a month. so I make 200 a month.

in the winter it will make more. as my heating bill will be lowered.

Now in the winter even if coins drop and my 200 a month profit goes to

70-80 my heating bill will drop 50 bucks.