Cryptocoin Mining?

[24601]

So for arguements sake you could achieve this at least once a day? And any idea of the various transaction fees involved?

I have noticed on the Mt.Gox site that USD withdrawals via Dwolla are only $0.25 per transaction. That would be cheap from moving almost $1000 out. No idea of the Dwolla fees to get that into a USD based account though?

Hey just thought, can you deposit USD into BTC-E with Dwolla? That would save time!

M

Just a warning. The more intermediaries you move it through, the more likely your USD will just vanish. Don't move USD more times than you need to. Unlike BTC or LTC its very easy for the intermediaries to steal your USD with no consequence to them, since they can pass the blame to a thousand other sources.

 

[Chiropteran]

I looked at btc-e and I have never used any of the funding sources they require. Moving money out of gox to dwolla is pretty fast, but getting it from dwolla back into spendable money takes a few days. I think best case turn-around for this would be 4-5 days. Still not bad if you can guarantee the current spread of value, but seems a bit risky and stressful. I am not going to try it.

 

[wbynum]

newegg is OOS of most of the 7950 models that were 'cheap' with decent coolers

Yep. Ebay prices for older cards are starting to creep up again. Reminds me of the summer of 2011. ATI 5830 cards were golden back then.

I bought 3 more 7950's last night. Will make a total of 11 GPU's in my mini-fleet.

 

[Chiropteran]

Spring is starting to warm up here in VA. Turned off 2 of my miners at home because the house was getting too warm and I couldn't leave the window open all day while I am at work. I would just turn on the A/C, but I need to get it's yearly service done first.

 

[Batmeat]

Just bought a Saphire Radeon 7950 to put to work. Now to see if I can stick it my rig and use it to mine while concurrently using my Nvidia card for the mundane work tasks. Hopefully it shows up in guiminer and I won't have issues

Just noticed we have similar avatars Chiropteran...some differences. I drew mine, not quite as concentric as yours.

 

[philipma1957]

So for arguements sake you could achieve this at least once a day? And any idea of the various transaction fees involved?

I have noticed on the Mt.Gox site that USD withdrawals via Dwolla are only $0.25 per transaction. That would be cheap from moving almost $1000 out. No idea of the Dwolla fees to get that into a USD based account though?

Hey just thought, can you deposit USD into BTC-E with Dwolla? That would save time!

M

still has risk that the money shifts in price while you wait. I have to say your idea could work. I rather do it the 'old' fashioned way and mine the coins.



guys the 7790 cards are really good 80 watts 300 hash

cost well under 150 with the rebates. [No longer true price went up]

I now have 3 of these

http://www.amazon.com/Sapphire-DL-DV...eywords=hd7790

these 3 cost me about 430 . about the same as a 7970. I got 2 bioshock codes. sold 1 for 15. waiting on rebates. I am hashing 895. and it pulls 270 watts

 

[Chiropteran]

Just noticed we have similar avatars Chiropteran...some differences. I drew mine, not quite as concentric as yours.

Yeah, mine was stolen from google image search.

chi·rop·ter·an
A mammal, such as the bat, that is a member of the order Chiroptera and has forelimbs modified as wings.

 

[24601]

still has risk that the money shifts in price while you wait. I have to say your idea could work. I rather do it the 'old' fashioned way and mine the coins.



guys the 7790 cards are really good 80 watts 300 hash

cost well under 150 with the rebates. [No longer true price went up]

I now have 3 of these

http://www.amazon.com/Sapphire-DL-DV...eywords=hd7790

these 3 cost me about 430 . about the same as a 7970. I got 2 bioshock codes. sold 1 for 15. waiting on rebates. I am hashing 895. and it pulls 270 watts

Anything less than a 7950 is wasting PCIe slots.

My 7950 does 660 kh/s in LTC (which means at least 660 mh/s in BTC).

Windows only works properly with 4 gfx cards max and most boards support 3 at most.

More computers is always less ideal than less computers .

Besides, this way you can use one 7950 as your main gfx card for non-mining duties. You can even crossfire your 3-4 7950s if you are a masochist.

 

[Spike]

I could not get my 5870 setup to mine LTC so I ended up going back to BTC (used to mine all the time). Sadly my 6970 has power issues and crashes at 100%, going to buy a 7970 and send the 6970 in for RMA.

Anyone else able to mine LTC with a 58** series card?

 

[Lazlo Panaflex]

Anyone else able to mine LTC with a 58** series card?

I'm using GUIminer/CGminer 2.10.5 w/ concurrency 8000, vectors 1, gpu threads 1, intensity 17 (avg 350+ kh)

 

[Silverforce11]

This is just stupid, i wonder how long it will stay at these insane diff/price ratios.. A 7950 pays for itself in less than 2 months.

 

[blastingcap]

The next 2 waves of Avalon ASICs have already been sold, and each one represents at least 18 Th/s of hashing power. As those ASICs are being delivered, we'd have to see bitcoins in the $500 range to keep the current diff/price ratio.

And that's not counting all the additional hashing being added from GPUs, or other ASIC companies getting their ASICs up and running (whether in their own labs or in their customers' hands).

And if you believe that we'll see $500+ bitcoins then you're better off simply buying bitcoins directly than mining.

 

[Binky]

I'm using GUIminer/CGminer 2.10.5 w/ concurrency 8000, vectors 1, gpu threads 1, intensity 17 (avg 350+ kh)

Do you get hardware errors? I've been tinkering with LTC on a few machines and getting high khash seems to be a difficult but not impossible (read: major PITA). What is more of a problem is getting good speed while keeping low temps, and avoiding hardware errors. I'm getting hardware errors on some cards even at stock speeds using various versions of cgminer. These same machines get 0% hardware errors while mining BTC. I still haven't tried reaper.

 

[PrototypeZ]

yeah this is a nice card.

oc to 1200 and it ;
hashes 300Mh
pulls 80 watts max
uses just one 6 pin wire

set fan at 60%
temp is 61c.

Good summary. I am thinking about picking up a few of these for grins and giggles for some old rigs that can do some crunching.

At 300Mh and 80 watts a card it also seems to be pretty good bang for the buck in terms of Mhashes to $$$

 

[wbynum]

To be honest, I do not see the purpose in picking up multiple 7790 cards. Two cost the same as one 7950 and get the same hash speed as one 7950. Power draw is not that much more with the 7950 over two 7790's.

Now if all you have to spend is $150 then by all means pick up the 7790.

 

[Zargon]

The next 2 waves of Avalon ASICs have already been sold, and each one represents at least 18 Th/s of hashing power. As those ASICs are being delivered, we'd have to see bitcoins in the $500 range to keep the current diff/price ratio.

And that's not counting all the additional hashing being added from GPUs, or other ASIC companies getting their ASICs up and running (whether in their own labs or in their customers' hands).

And if you believe that we'll see $500+ bitcoins then you're better off simply buying bitcoins directly than mining.

this is true. though if speculation doesnt pay off and BTC goes to zero, you have nothing.

mining means you have GPUS you can sell to salvage some $$

The way the EU is going about 'protecting' the euro I see BTC being relevant for quite some time.

Anything less than a 7950 is wasting PCIe slots.

My 7950 does 660 kh/s in LTC (which means at least 660 mh/s in BTC).

Windows only works properly with 4 gfx cards max and most boards support 3 at most.

More computers is always less ideal than less computers .

Besides, this way you can use one 7950 as your main gfx card for non-mining duties. You can even crossfire your 3-4 7950s if you are a masochist.

unless you have a machine with a spare slot in a case that cant breath enough to support another 7950, then the 7790 is viable, as its not near as much of an oven

 

[IMZORRO]

Those who use the 7970.

I have been using GUIminer but have not been able to figure out what FLAGS to use. Would you please post what you are using.

Also, I can't seem to see my GPU in the options. I can see the CPU but GPU is missing. I tried getting the latest driver but it still won't show up. The only other option I see is Tahiti but don't think this is correct. I can still mine using Tahiti but am afraid I may be overworking my card. Did anyone else encounter this problem? Or if you can tell me how to get it to show

Thanks

 

[Lazlo Panaflex]

Do you get hardware errors? I've been tinkering with LTC on a few machines and getting high khash seems to be a difficult but not impossible (read: major PITA). What is more of a problem is getting good speed while keeping low temps, and avoiding hardware errors. I'm getting hardware errors on some cards even at stock speeds using various versions of cgminer. These same machines get 0% hardware errors while mining BTC. I still haven't tried reaper.

I started out with reaper, but was getting hw errors and lots of stales with burnside. I then switched to guiminer/cgminer, easier to tinker & find the sweet spot. Now in the notroll stratum pool, sales/invalids are way down. Load temps are 67c, fan is @ 95%. Got lucky with this card...not so lucky w/ the 7870XT (can't go over intensity 13 with that one without artifacts)...that card is a major PITA.

Edit: cards are bone stock, no overclocking.

 

[ultimatebob]

Now that BTCbuy has been shut down, how are you guys unloading your Bitcoins and Litecoins?

What reputable and legit storefronts do you guys use with your hard earned cryptocurrency?

 

[Binky]

Those who use the 7970.

I have been using GUIminer but have not been able to figure out what FLAGS to use. Would you please post what you are using.

Also, I can't seem to see my GPU in the options. I can see the CPU but GPU is missing. I tried getting the latest driver but it still won't show up. The only other option I see is Tahiti but don't think this is correct. I can still mine using Tahiti but am afraid I may be overworking my card. Did anyone else encounter this problem? Or if you can tell me how to get it to show

Thanks

Tahiti is your 7970. A safe overclock might be around 1050-1100 at about 1.15v (this is a slight undervolt), with memory lowered to something like 450mhz or less at 1.5v. I like temps to stay 74C or lower, but many people run up to the low 80s.

 

[Rikard]

My 7950 does 660 kh/s in LTC (which means at least 660 mh/s in BTC).

With what settings and OC? Mine are on previous page.

Spring is starting to warm up here in VA. Turned off 2 of my miners at home because the house was getting too warm and I couldn't leave the window open all day while I am at work.

Well, they announced snow here tomorrow, so I might get a 2nd 7950 that will pay off itself before it gets comfortably warm.

 

[Lazlo Panaflex]

@ binky/IMZORRO, Keep an eye on the VRM temps too (I use GPU-Z); if they go super high then there may be a problem w/ the card or they aren't getting cooled properly.

Now that BTCbuy has been shut down, how are you guys unloading your Bitcoins and Litecoins?

What reputable and legit storefronts do you guys use with your hard earned cryptocurrency?

I'm hoarding 'em here's a thread that list businesses that take Litecoins: https://bitcointalk.org/index.php?topic=157492.0

 

[24601]

With what settings and OC? Mine are on previous page.


Well, they announced snow here tomorrow, so I might get a 2nd 7950 that will pay off itself before it gets comfortably warm.

Sapphire Dual-X 2L 7950 54.6% ASIC Quality 1.175v@1100 core 1.600v@1575 ram. The memory speed (and consequently the hash rate) would be higher if I could get the .dll trick with afterburner to work for more than 1 video card.

24000 thread concurrency 20 intensity. cgminer 2.11.4 . Catalyst 13.3 beta 3

I suspect it would probably do 700+ mh/s easy in bitcoin mining.

 

[Rikard]

OC in my signiture. The memory speed (and consequently the hash rate) would be higher if I could get the .dll trick with afterburner to work for more than 1 video card.

24000 thread concurrency 20 intensity. cgminer 2.11.4 . Catalyst 13.3 beta 3

I suspect it would probably do 700+ mh/s easy in bitcoin mining.

Thank you, I will try that. Maybe not the same voltage though as this one has stock OC with 1.087 V (it is 87.7% ASIC).

The highest effect spike I registered with my current setting was ~200 W over idle effect, so my 650 W PSU should be able to handle a second card.

 

[IMZORRO]

Thank Binky and Lazlo,

I'll look at the overcloking for it. So do I need to enter anything in the flags field for my 7970 or just leave it blank. Sorry, very new to this.
I think i read browsing to use -w256 -f20 and then someone else said to leave blank. I was trying to find something that gave me a little more info on how to figure out what the -w -f values mean and what to use on my card.