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Cryptocoin Mining?

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The thing with blackcoin (and many other smaller coins & pumping) is that the amounts for sale and buy orders are tiny. 20 BTC could wreak havoc on the price (up or down) immediately.
 
wand3r3r said:
The thing with blackcoin (and many other smaller coins & pumping) is that the amounts for sale and buy orders are tiny. 20 BTC could wreak havoc on the price (up or down) immediately.
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That's why it's a trader's dream. If you have a small bundle of BTC you can make it look like it's on an upswing, get a bunch of bagholders on board, then dump.

Rinse and repeat until you walk away with 300% or 1000% or more of your original balance.

Or because someone has deeper pockets than you, you play right into their gaming the market and YOU become the bagholder.
 
It could start a new craze in altcoins that follow the BC model, which would put and actually probably kill off most if not all of the coingen PoW clones. If this is the natural order of things, so be it!
 
nwo said:
Or MSI afterburner. I've used Afterburner to successfully under-volt both my 7870s.
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The latest Afterburner beta let me undervolt all my 290s for an average 10% power savings.

Probably still going to get around to bios flashing at some point just so I don't have to re-apply at startup.
 
IEC said:
Probably still going to get around to bios flashing at some point just so I don't have to re-apply at startup.
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Yep true, that is quite annoying. But if you check the option to apply profile at startup and have afterburner launch on startup, then you can get around that. I never turn off my PCs so I don't care much for it. Was much easier than BIOS flashing, that's for sure.
 
nwo said:
Yep true, that is quite annoying. But if you check the option to apply profile at startup and have afterburner launch on startup, then you can get around that. I never turn off my PCs so I don't care much for it. Was much easier than BIOS flashing, that's for sure.
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BIOS flashing is inconvenient, but not difficult. Plus the 290s have dual BIOS so I don't feel so bad about taking the risk of flashing it.
 
BIOS flashing is actually very easy and apparently you can do it right from windows too. (Maybe to the cards which aren't running the display)
 
wand3r3r said:
BIOS flashing is actually very easy and apparently you can do it right from windows too. (Maybe to the cards which aren't running the display)
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I would HIGHLY recommend NOT doing it from within Windows. You run a much higher risk of bricking your cards if you do that.

Especially because it takes < 5 minutes to create a bootable USB flash drive that boots into DOS and allows you to use atiflash to safely flash the BIOS.
 
IEC said:
I would HIGHLY recommend NOT doing it from within Windows. You run a much higher risk of bricking your cards if you do that.

Especially because it takes < 5 minutes to create a bootable USB flash drive that boots into DOS and allows you to use atiflash to safely flash the BIOS.
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What would the purpose be for flashing the 290's? If for voltage settings have you found a bios editor for Hawaii that allows voltage adjustments?

Stilt has volt modded bios, but those are hit and miss and only work on reference 290/290x.
 
Attic said:
What would the purpose be for flashing the 290's? If for voltage settings have you found a bios editor for Hawaii that allows voltage adjustments?

Stilt has volt modded bios, but those are hit and miss and only work on reference 290/290x.
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Yup, Stilt volt modded BIOSes. Unfortunately no easy BIOS editor for Hawai'i (yet)
 
IEC said:
I would HIGHLY recommend NOT doing it from within Windows. You run a much higher risk of bricking your cards if you do that.

Especially because it takes < 5 minutes to create a bootable USB flash drive that boots into DOS and allows you to use atiflash to safely flash the BIOS.
Click to expand...

I haven't done it but others have and have claimed they don't worry due to the BIOS switch. The risk is there, but Idk if you can flash it so badly that you can't do anything with it.
 
For anyone interested i'm going to post my trials with getting -g 2 or gpu-threads 2 working on 290x. I have limited trials on the 290, but ran into similar condudrums there as I did with the 290x below. I'm trying to lower stales/rejects on scryptguild by using g 2 and lower intensity while remaining near peak kh/s I get using g 1. Haven't found a solution though.

Due to how picky g 2 is for the 290x I had to use xintensity instead of intensity. This requires sgminer 4.1.0 or other non classic 3.7.2 cgminer.

With xintensity set to 4 or 12 I got the best resutls with TC set to 11264 (4xshaders) or 22528 (8xshaders). For the most part with g 2 everything else I tried gave hardware errors or was much slower. This never got me closer than 70kh/s from where the same mem/core would get with g-1 and intensity 20. So for example 900c/1250m with g-2 and xintensity 4 tc 22528 would give ~780kh/s and <1% rejects wheras 900c/1250 with g-1 and intensity 20 tc 22528 (or 33793) would give 850kh/s but with ~7% rejects.

Using intensity <18 on the 290/290x really slams my kh/s so simply sticking with g1 and lowering intensity doesn't do much good.

Still going to fool around with it, but if anyone has been down this road or wants to join up, let me know what ya find.
 
I haven't been having issues with rejects with 290s with one thread, intensity 18, TC 32765. This is across 8 different 290s.

Rejects will also vary by pool and difficulty. I am currently running 128 difficulty per 2x 290s on ltc.ghash.io and getting < 0.30% rejects of any kind.
 
Virge_ said:
How does the most profitable Scrypt-N multipool compare to, say, ScryptGuild from a profitability perspective?
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I'm not sure. I only know of one Scrypt-N Multipool and I have not used them.

I still think you'd make more money off of a scrypt multipool, just because of the shear number of coins they have to choose from.
 
I'll try an extended run with i-18 on the 290x to check for rejects and wu. After 5 mins its settling in at roughly 8% slower kh/s than vs all else the same an intensity of 20.

Scryptguilds pool operator indicated that some pools may be counting stales so it effectively dillutes everybody shares but presents less rejects to the miner. I know that on waffle with an identical setup my rejects are ~1% vs 7% at scryptguild. Clevermining also showed very high rejects, but clever had the best payout per accepted share rate.

So 280x's look to be best to me in this regard because they pump out there best hash at g 2 and they can be pointed at scrypt or clever and get paid out on share batches that are not dilluted by counted rejects.

But, i friggen love my 290x and a few new 290's that will go to dedicated gaming setups.
 
slashbinslashbash said:
If your pool rejects stales (as it should) then startup with --no-submit-stale to avoid some of those rejects. Mostly matters on coins with fast block times.
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Yea, it's almost a non issue on LTC or DOGE. I've noticed that on occasion i'll submit a stale and have it accepted, though most of the time it's rejected. I still submit just to grab any of those possible accepts.
 
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