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[Official] BitCoin LiteCoin DigitalCoin and all Crypto Currencies Club And General Information Thread - Page 451

post #4501 of 22341
When are cointron registatrion open? I want to register but its never open
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post #4502 of 22341
Quote:
Originally Posted by ccRicers View Post

For all coin transactions on that coin's given network, the majority of the nodes (basically any computer that mines or has the whole blockchain) have to reach a general consensus on what is the correct blockchain, or list of transactions. Anyone trying to cheat by double spending their coins (effectively like counterfitting coins) would have to overwhelm the network with their own list. Therefore it's known as the 51% attack because you need to control at least that much computing power, more like >50% to be accurate.

On very large networks like Bitcoin this requires an astronomical amount of computer power, so an attack is very improbable there, but very small networks on coins just starting out, it's more susceptible to attack.

Yeah, only the largest coins are significantly resistant to this, while small SHA256 coins are most vulnerable. One person with a good ASIC setup could successfully pull off a 51% attack on many of the smallest/newest coins that use SHA256 for proof-of-work.

This is the prime reason I stay away from altcoins till the reach a certain critical mass. I'm okay with risks, just not the kind where an entire coin can be invalidated overnight by a one-man attack.
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post #4503 of 22341
Quote:
Originally Posted by Stuuut View Post

Hey you should try having two folders of CGMiner one for each card.
Then use -d 0 and -d 1 to force only one card to be used
-d 0 for the first card
-d 1 for the second card

See if that works.
Code:
setx GPU_MAX_ALLOC_PERCENT 100
cgminer --scrypt -o -d 0 stratum+tcp://pool.d2.cc:3333 -u Faint15.1 -p x -I 20 -g 1 -w 512 --thread-concurrency 32765  --lookup-gap 2 --gpu-powertune 30

setx GPU_MAX_ALLOC_PERCENT 100
cgminer --scrypt -o -d 1 stratum+tcp://pool.d2.cc:3333 -u Faint15.1 -p x -I 14 -g 1 -w 64 --thread-concurrency 6720  --lookup-gap 2 --gpu-powertune 30

Alright, I'll try that. Thanks.
post #4504 of 22341
when is it best to trade alt coins for btc, when btc is higher or lower
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post #4505 of 22341
Ended up not working. I'll just have to mine using my 290 for now. Still gives me nearly x5 the amount of Kh/s compared to my 6870.
post #4506 of 22341
Good god, what is with Galaxycoin? Coinwarz has shown between $1000-3600+ daily ROI on what looks to be a dead currency (it's fluctuated heavily down to as low as $5 today, just to put that out there. Looks like artificial pumping...




Trying to get connected to Be^5rs, & I'm getting nothing but "not connected" errors. Anyone else experiencing this?



Edit: 10 minutes later it's back down to $34/day on Coinwarz calc default settings... Lol!
Edited by ForceProjection - 12/9/13 at 7:13pm
post #4507 of 22341
Ok, so over the last two days, I've sold a Butterfly Labs Jalapeno ASIC Miner (5GH/s version) for $600 (bought for $300, never used - it arrived about 10 days ago after ordering in June lol), and my Windforce3 Radeon 7950 for $345.

Now - I have a 280x on the way for my main rig to replace the 7950 (currently just on a laptop). But with this extra $925 (after fees and shipping), would it be reasonable to buy some parts and put together a mining rig? I was planning on getting 4 R9 270s (not x) since they just require a single 6-pin power connector. Electricity cost is not a problem for me, electricity in Lubbock is dirt cheap. And when I say dirt cheap, I mean it. Currently something like $0.0214 per kWh. My last month's power bill was $22 (not a typo). Lack of central heating/air as well as no dishwasher is a large reason for this (Gas powered heater - gas is part of water bill, paid by landlord).

270s (reportedly) get about 450KH/s each, so a 4x 270 rig would be getting probably around 1.5 - 1.75MH/s. If I were to do this, what kind of power would that use? I would be using a cheap dual-core processor, so really the only power would be used by the cards. And scrypt mining is affected purely by the graphics cards, correct? RAM doesn't really play into it much at all?
Edited by Maian - 12/9/13 at 7:08pm
post #4508 of 22341
Quote:
Originally Posted by deathlikeeric View Post

When are cointron registatrion open? I want to register but its never open

If you want my account, I can give it to you. I don't use it anymore, and it comes preloaded with 0.5FTC.
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post #4509 of 22341
Quote:
Originally Posted by Maian View Post

Ok, so over the last two days, I've sold a Butterfly Labs Jalapeno ASIC Miner (5GH/s version) for $600 (bought for $300, never used - it arrived about 10 days ago after ordering in June lol), and my Windforce3 Radeon 7950 for $345.

Now - I have a 280x on the way for my main rig to replace the 7950 (currently just on a laptop). But with this extra $925 (after fees and shipping), would it be reasonable to buy some parts and put together a mining rig? I was planning on getting 4 R9 270s (not x) since they just require a single 6-pin power connector. Electricity cost is not a problem for me, electricity in Lubbock is dirt cheap. And when I say dirt cheap, I mean it. Currently something like $0.0214 per kWh. My last month's power bill was $22 (not a typo). Lack of central heating/air as well as no dishwasher is a large reason for this (Gas powered heater - gas is part of water bill, paid by landlord).

270s (reportedly) get about 450KH/s each, so a 4x 270 rig would be getting probably around 1.5 - 1.75MH/s. If I were to do this, what kind of power would that use? I would be using a cheap dual-core processor, so really the only power would be used by the cards. And scrypt mining is affected purely by the graphics cards, correct? RAM doesn't really play into it much at all?

RAM: at least 4GB
CPU: doesn't matter - I use a Sempron 145 single core
post #4510 of 22341
Quote:
Originally Posted by ForceProjection View Post

Good god, what is with Galaxycoin? Coinwarz has shown between $1000-3600+ daily ROI on what looks to be a dead currency (it's fluctuated heavily down to as low as $5 today, just to put that out there. Looks like artificial pumping...




Trying to get connected to Be^5rs, & I'm getting nothing but "not connected" errors. Anyone else experiencing this?



Edit: 10 minutes later it's back down to $34/day on Coinwarz calc default settings... Lol!

Supposedly somebody with a huge farm is mining it until he finds a block then dumps it for about 30 minutes and then comes back and does it again so the difficulty stays low. Also, it's like impossible to mine so the price goes up.
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