Cryptocoin Mining?

[Attic]

thanks for this.

I just tried out VBE7 in wine and used the ubcd iso.
Now i've changed my 7870 from 1100/1200 1.219v to 1100/1250 1.112v
I tried 1.05v but was getting some screen flicker even at 1000/1250
~1.075 might have worked, but I just played it safe and went for 1.112v
1150/1500 is stable for hashing at 1.112v

The only thing is the voltage is still locked, i'll have to figure out where the bytes are in the rom file to change that manually if I want to fix that.
Also I assume the .fpr fan profile is for some kinda windows app ?

Unsure about .fpr. I just drop into VBE to adjust volts, haven't explored much beyond that. The fan profile/settings I saw in VBE seemed to mimick 1 for 1 what I was able to adjust in MSI afterburner on my 270's.

I was doing 1100/1500 at 1075v on my new MSI 270x, only ran for 20mins though. That was hashing at 470 with standard settings for cgminer. I'm tempted send it back to 1150/1500 now and see where I can get volts to fit in there on this card. But I saw nearly a 1 for 1 kh/s to watt shaving by dropping to my current state (975/1200 0.975) from 1100/1500 1075v.

One thing that surprised me was how much beefier the cooler is on the 270x than the 270 for the MSI version. The card runs very cool and has a noticeably bigger HSF under the fan shroud. I really like the 270 lineup for hashing, but price creep is hitting them now. One thing with the MSI cooler was that temps on my upper card in a closed case completely exploded, getting these out in the open was a massive drop in fan speed and temps.

 

[Soulkeeper]

i've noticed that there is somewhat of a blackhole between 1250-1500 on the mem, anything inbetween easily kills my hashrate by 100KH/s

 

[greenhawk]

Also, just saw the two articles mentioned on the slashdot post below, where a commenter mentions how:


I've raised this point before, how maybe a sophisticated entity .... But bitcoins are finite, once destroyed they cannot be recovered.

Unfortunitly, the thing that makes BitCoins valuable (ie: limited supply) is the think that you are argueing about. If there was a way, BitCoin and similar things would be easily duplicated, leaving no value for what is mined or for anyone to buy into the system.

If BitCoin did ever start to have this issue, I suspect some other coin would step up as the new standard.

 

[Soulkeeper]

Unsure about .fpr. I just drop into VBE to adjust volts, haven't explored much beyond that. The fan profile/settings I saw in VBE seemed to mimick 1 for 1 what I was able to adjust in MSI afterburner on my 270's.

I was doing 1100/1500 at 1075v on my new MSI 270x, only ran for 20mins though. That was hashing at 470 with standard settings for cgminer. I'm tempted send it back to 1150/1500 now and see where I can get volts to fit in there on this card. But I saw nearly a 1 for 1 kh/s to watt shaving by dropping to my current state (975/1200 0.975) from 1100/1500 1075v.

One thing that surprised me was how much beefier the cooler is on the 270x than the 270 for the MSI version. The card runs very cool and has a noticeably bigger HSF under the fan shroud. I really like the 270 lineup for hashing, but price creep is hitting them now. One thing with the MSI cooler was that temps on my upper card in a closed case completely exploded, getting these out in the open was a massive drop in fan speed and temps.

Seems I spoke too soon, just tried some gaming tests and a few more firmware settings.
turns out 1150 requires a lot more voltage than 1100
1.175v isn't enough
ohh well

I get 494KH/s at 1150/1500 but if i'm gonna need 1.2v to do it, probably not worth it

 

[Torn Mind]

Unfortunitly, the thing that makes BitCoins valuable (ie: limited supply) is the think that you are argueing about. If there was a way, BitCoin and similar things would be easily duplicated, leaving no value for what is mined or for anyone to buy into the system.

If BitCoin did ever start to have this issue, I suspect some other coin would step up as the new standard.

The limited supply does not make Bitcoin more "valuable"; it is humans thinking it has "value" that makes it valuable. The cap on the total number of coins just means that there is a dead end to inflation growth rate (in % change of the total supply) once the last coin is mined. Or in other words, when the last coin is mined, the money supply is no longer increasing even a fraction of a percentage point.

It might be an issue if demand for the currency is so great that there isn't enough to go around. But at its inception, Bitcoin was far more scarce that it is now, but it sure wasn't going for $1000 in 2011.

But exchange rates are not determined by solely by supply but rather supply and demand for that currency.

 

[taltamir]

It might be an issue if demand for the currency is so great that there isn't enough to go around.

Bitcoin protocol is designed such that you can patch in more digits after the zero. so you can keep on dividing it again and again as needed

 

[KlokWyze]

I can't speak for Ripple but some people don't think NXT is fair because the coins were all pre-mined and distributed to the initial investors. I have done my research and a lot of those initial investors were selling off their coins at 1 million NXT per BTC. So it's not like all of them just sat and waited for the price to rise, some have though...

Ultimately, any large holders will have to sell off their coins or their entire stake will be worth nothing. On the tech side NXT is very promising, although the GUI is pretty primitive atm but upcoming clients will fix that.

It is being added to Vircurex this weekend supposedly, so now might be a good time buy as I can see the price rising again in the short term.

I won't deny that NXT is risky, I managed to get in at 0.00003-4 and sold off about 30 % of my holdings to cover the initial investment thanks to the recent rise. Just keeping the rest and holding long term now. NXT has the one of most dedicated communities of any crypto that I've seen, maybe behind Doge in the promotion efforts, but there's a lot more active development going on.

Just check out the thread over on Bitcointalk - over 1200 pages - https://bitcointalk.org/index.php?topic=345619.0

Oh and as for forging, just remember there's not a lot of transactions of the network yet so you won't be earning much NXT from a block. It takes a good amount of coins to forge regularly - you'd need around 100K to hit a block every day or two probably. So don't invest if you want to just profit off forging, you'll make very little at this time.

Great post. Thank you. If this was reddit I would have tipped you some Doge.

I'll throw a little BTC on this and just let it sit. Ripple I definitely don't trust though.

 

[KingFatty]

Ok I'm testing with middlecoin, and it seems a new block comes along before my computer can get anything accepted. Does this mean that if a worker is not fast enough, it can't get anything accepted because the blocks are found too quickly on that pool?

Is this an inherent flaw in middlecoin? Where lower-speed workers are disproportionately ignored and miss out? Is there a way to use a super-low difficulty so my machine can be fast enough to get work accepted before the next new block is found?

Here's my cgminer screen, showing very low acceptance:
cgminer version 2.11.4 - Started: [2014-01-25 02:57:09]
--------------------------------------------------------------------------------
(5s):580.4K (avg):626.5Kh/s | A:4 R:1 HW:0 U:0.6/m WU:731.2/m
ST: 2 SS: 0 NB: 17 LW: 89 GF: 0 RF: 0
Connected to middlecoin.com diff 1.02K with stratum as user 1BXdF7S7Vy2rKnmwGym
Block: 62a9d62abe3fc690... Diff:18.6M Started: [03:03:01] Best share: 3.57K
--------------------------------------------------------------------------------
[P]ool management [G]PU management ettings [D]isplay options [Q]uit
GPU 0: 74.0C 3331RPM | 630.3K/633.9Kh/s | A:4 R:1 HW:0 U: 0.57/m I:20
--------------------------------------------------------------------------------

[2014-01-25 02:59:26] Stratum from pool 0 detected new block
[2014-01-25 02:59:40] Stratum from pool 0 detected new block
[2014-01-25 02:59:42] Stratum from pool 0 detected new block
[2014-01-25 03:00:19] Stratum from pool 0 detected new block
[2014-01-25 03:01:17] Stratum from pool 0 requested work restart
[2014-01-25 03:02:21] Accepted aec12df0 Diff 1.08K/1024 GPU 0
[2014-01-25 03:02:23] Stratum from pool 0 detected new block
[2014-01-25 03:02:26] Stratum from pool 0 detected new block
[2014-01-25 03:02:29] Stratum from pool 0 detected new block
[2014-01-25 03:02:41] Stratum from pool 0 detected new block
[2014-01-25 03:02:43] Stratum from pool 0 requested work restart
[2014-01-25 03:02:48] Accepted e0c901b5 Diff 1.22K/1024 GPU 0
[2014-01-25 03:03:01] Stratum from pool 0 detected new block

 

[blastingcap]

Does this mean that if a worker is not fast enough, it can't get anything accepted because the blocks are found too quickly on that pool?

No it does not, this q has been asked several times at middlecoin's forums already so you may want to ask and read stuff there directly. Over long periods of time, it may even be MORE efficient to have high difficulty as you waste less time in-between units of work.

 

[Mark R]

Ok I'm testing with middlecoin, and it seems a new block comes along before my computer can get anything accepted. Does this mean that if a worker is not fast enough, it can't get anything accepted because the blocks are found too quickly on that pool?

No. Mining is a random process, like playing the lottery. Every hash that your miner does is like playing a new lottery game with a random selection of numbers. Every single hash performed is a new random number unrelated to the hash checked before it. There is no "order".

Finding a share is like winning a minor prize in the lottery; there are lots of ways to win, so each win gets a small prize, but there are lots of winners.

Changing the difficulty doesn't change the total prize fund, but harder shares, like on middlecoin mean that the minor prizes are rarer but more valuable.

On average, you get the same payout, but it comes in rarer bigger chunks - so you get a more erratic income.

The extreme is solo mining, where you are looking for that 1 share in the entire network block. You can do it with only a low hashrate, but your income becomes very erratic, so most people mine on pools for a more consistent income.

Just for proof here's the result from a monte-carlo analysis I did. This is the average (over 100,000 blocks) number of accepted work units per minute that a 500 wu/min miner gets for various share difficulties. As you can see, the share diff makes no difference.

Sharediff Av num accepted 
2.00	498.87
2.83	500.80
4.00	501.76
5.66	498.05
8.00	504.11
11.31	501.38
16.00	499.33
22.63	504.59
32.00	502.98
45.25	501.43
64.00	499.41
90.51	500.14
128.00	497.16
181.02	503.04
256.00	499.81
362.04	499.49
512.00	501.15
724.08	501.51
1024.00	496.84
1448.15	503.18
2048.00	503.19
2896.31	497.93
4096.00	503.60
5792.62	499.51
8192.00	490.46
11585.24	489.14
16384.00	498.40
23170.48	502.82
32768.00	494.47
46340.95	502.01
65536.00	501.35
92681.90	518.39

 

[taq8ojh]

Omg, I blew into the graphic card's hetsink, cloud of black dust took off, I started coughing like mad (and still am after 10 minutes!), and the fan started to make funny noises. I repeated the process a few times and finally took vacuum cleaner and cleaned the whole area around the PC, and then realized GPU temperature dropped from 70 to 51°C. Holy shit!! I keep the case open, and this room is like a dust magnet for the entire house. I've only been mining for less than two months and this already accumulated in the heatsink and the fan. Jeez.

 

[taltamir]

Omg, I blew into the graphic card's hetsink, cloud of black dust took off, I started coughing like mad (and still am after 10 minutes!), and the fan started to make funny noises. I repeated the process a few times and finally took vacuum cleaner and cleaned the whole area around the PC, and then realized GPU temperature dropped from 70 to 51°C. Holy shit!! I keep the case open, and this room is like a dust magnet for the entire house. I've only been mining for less than two months and this already accumulated in the heatsink and the fan. Jeez.

Set your AC fan from "auto" to "on". You will have to replace the filter more often but it will efficiently and inexpensively dedust your house

 

[taq8ojh]

Having AC in every house is not a common practice in this country at all

 

[taltamir]

Having AC in every house is not a common practice in this country at all

how odd

 

[KentState]

Started messing around with cudaminer with my new card. Nothing spectacular, but I'm getting around 560khash/s right now. Half tempted to get another card for SLI and see if I can pay it off with mining proceeds.

 

[suklee]

How do I spend bitcoins from my iPhone? I'm traveling to uk and Germany in a week and would like the option just in case

 

[f1sherman]

Just watching some epic Doge drops on Cryptsy. Oh the panic of it

Each one of these guys just lost 10 years of their life


This has been mentioned, but I dont know....

 

[broken_pixel]

How do I spend bitcoins from my iPhone? I'm traveling to uk and Germany in a week and would like the option just in case

I think Apple blocks bitcoin apps?

 

[suklee]

The only app I found so far is blockchain: https://itunes.apple.com/ca/app/blockchain/id493253309?mt=8

Says I can send and receive payments, anyone use this before?

 

[slashbinslashbash]

The only app I found so far is blockchain: https://itunes.apple.com/ca/app/blockchain/id493253309?mt=8

Says I can send and receive payments, anyone use this before?

You're probably better off using your normal wallet to send some BTC to an online wallet (or exchange) before you leave; then you can then login and send BTC over the web from your phone.

 

[nwo]

Just watching some epic Doge drops on Cryptsy. Oh the panic of it

Each one of these guys just lost 10 years of their life


This has been mentioned, but I dont know....

What comes down will eventually get back up

Waiting for doge to tank some more before I buy into it. I made a promise to myself I won't sell any doge I mine for a couple of months.

Besides, doge is still way more profitable (to mine) than other cryptos, particularly LTC.

 

[taltamir]

What comes down will eventually get back up

Waiting for doge to tank some more before I buy into it. I made a promise to myself I won't sell any doge I mine for a couple of months.

Besides, doge is still way more profitable (to mine) than other cryptos, particularly LTC.

why do you think a major blow to fiat money in china a blow to crypto?

I find it more likely that the recent massive spike in chinese purchasing of crypto in the past 2 months was due to party insiders trying to protect their money, having known in advance about this default

 

[Torn Mind]

Kittehcoin just shot up ridiculously last night. Once again, I regret not holding on to some spare Kittehs, always thinking the next day is the tanking day. And difficulty is still low.

 

[holden j caufield]

hey guy quick question. If I have a card that does .0931- 0944v, at 990 core, 1490 memory and hashes at 611 khash stable. My coworker wants to buy it from me for $325. It seems like a really good card and I only used it for a few days. But the whole crypto currency is a little more time consuming for me than I'd like, I spend a ridiculous amount of time looking the charts and trying to trade them. I used to go exercise about 4-5 times a week and now I spend it looking at the little fluctuations in price etc.

 

[nwo]

hey guy quick question. If I have a card that does .0931- 0944v, at 990 core, 1490 memory and hashes at 611 khash stable. My coworker wants to buy it from me for $325. It seems like a really good card and I only used it for a few days. But the whole crypto currency is a little more time consuming for me than I'd like, I spend a ridiculous amount of time looking the charts and trying to trade them. I used to go exercise about 4-5 times a week and now I spend it looking at the little fluctuations in price etc.

What card is this? If it is 7950 or 7970, then I'd say take it! Even though those are really good results if you factor in power consumtion, you would be better off selling it for $325, buying a GTX 770 for ~$300, and getting your life back on track.