Cryptocoin Mining?

[slashbinslashbash]

One of my systems is 2-280x and 1-270 and I'm encountering what appears like a CPU related drop in kh/s.

CPU is Sempron 145, Board is MSI 770T-C45 and AM2+ board that runs DDR2.

When I disable all but one 280x I get ~600kh/s and then when I set cgminer to high priority in task manager it gets 710kh/s. Enabling the second one is similar behavior, I need to have cgminer to high priority to get hash rates as high as possible.

When I enable the 270 in a seperate cgminer instance I drop to 670 kh/s on the two 280x's even with cgminer set to high for the 280x's and left to normal for the 270.

The 270 hashes optimally in any situation.

Could this be related to the g 2 setting that i'm using in the cgminer settings for the 280x's? I know that on my multi core systems i'm not getting the same drop in kh/s on the 280x when cgminer is at normal instead of high.

I'm able to get the hashing rate up as well by disabling cool n quiet in BIOS so that the Sempron runs at 2800 vs 800, but still nothing I've tried has got the 280x's to hash the same without the 270 as with the 270 running.

Could it be a power supply issue? From your description, it only seems to happen when you've got all 3 cards fired up. Are your voltages staying stable?

 

[holden j caufield]

so a huge online retailer gives it more legitimacy and bitcoin starts dropping? I don't get it.

 

[KlokWyze]

so a huge online retailer gives it more legitimacy and bitcoin starts dropping? I don't get it.

Saw that. Quite odd.

Doge is doing great in terms of value. Market cap raising. Will take over Peercoin within a couple weeks probably.

LTC difficulty back down to 3100. Price down to $21. TBH if BTC falls low I'm putting some cash in for trading.

 

[x3sphere]

Glad I'm out of LTC. It's going to lose all the support from GPU miners soon with ASICs coming so only people with deep pockets will be mining it. And, despite being the #2 coin, it hasn't really gained much foothold in the real world unlike Bitcoin. Hell, there's no reason DOGE can't replace LTC.

 

[KlokWyze]

Glad I'm out of LTC. It's going to lose all the support from GPU miners soon with ASICs coming so only people with deep pockets will be mining it. And, despite being the #2 coin, it hasn't really gained much foothold in the real world unlike Bitcoin. Hell, there's no reason DOGE can't replace LTC.

I'll admit that LTC doesn't have the grassroots support like Doge, but it's market cap is huge and TBH it's only a few events away from potentially exploding in value. Doge, OTOH, is clearly quite new and more volatile. In 3 months Doge could be completely irrelevant.

In reality I put my money where my mouth is. That's BTC until/if it spikes again. I'm talking like shooting to $2000/BTC. Let it go up and then in turn divest in alt coins.

 

[taltamir]

Glad I'm out of LTC. It's going to lose all the support from GPU miners soon with ASICs coming so only people with deep pockets will be mining it. And, despite being the #2 coin, it hasn't really gained much foothold in the real world unlike Bitcoin. Hell, there's no reason DOGE can't replace LTC.

Doge is an LTC clone made by an incompetent programmer (one guy, I call him incompetent because of all the bugs he introduced when all he was doing is a LTC clone), it uses a meme to market itself (and we all know how long those last right?) and because it presented itself as a joke the initial few miners control almost all of the supply.

Like all the other LTC clones it can be mined by the same hardware & EVEN THE SAME SOFTWARE. That's why multipools work, they can dynamically switch from mining LTC to Doge to any other of the 100+ crapcoins out there which are nothing but an LTC clone, you don't even have to restart the mining client or change any settings in it.

There will never be an LTC ASIC, what we will have is a Scrypt ASIC which will mine LTC, DOGE, etc. Most likely the vast majority of those will be mining on a multipool
Now, in theory, if the LTC paradigm holds (algorithm less friendly to ASICs), than the ASIC will not render GPU mining obsolete like they did in bitcoin (it will be better, just not so much better as to make GPU mining unprofitable... in theory).

It is worth noting that there are several bitcoin clones out there too (under 10) which can be mined with bitcoin ASIC hardware and software. And there is a new third algorithm called Scrypt-Jane which supposedly is even more hostile to ASICs and even to GPUs. To the point CPU mining becomes valid on it again

Out of curiosity, where did you hear that LTC is going to crash due to ASICs that mine LTC and cannot mine DOGE? If this comes from the DOGE insiders then it means that they are getting ready to end the charade and dump the coin.

 

[holden j caufield]

I can't really see why everything is falling so hard. Seems like massive manipulation and someone is going in and will buy it all cheaper. Tigerdirect is way more positive news than overstock or zynga accepting bitcoins. I'm also hearing google and an online poker network will be accepting it soon. I'd imagine this would make the price go up a decent amount.

 

[Soulkeeper]

do any of you mine with this card ?
http://www.newegg.com/Product/Produc...82E16814202078

I'd like to ask a few questions if someone has it.

 

[Torn Mind]

Kittehcoin continues its trend upwards. Damn, it was around .00000002 MEOW/BTC and it is now .00000026 on CoinedUp.

 

[x3sphere]

Out of curiosity, where did you hear that LTC is going to crash due to ASICs that mine LTC and cannot mine DOGE? If this comes from the DOGE insiders then it means that they are getting ready to end the charade and dump the coin.

I'm aware that Doge is scrypt also and these same ASICs can mine it. However, the algorithm can easily be changed, something I'm sure the community would be in favor of unlike with Litecoin.

It's true the efficiency gap isn't as large as with the SHA-256 ASICs, but it's large enough that Litecoin won't be profitable for GPU miners anymore soon.

People will stop making scrypt clones for the most part. You rarely see SHA-256 clones these days and when they do come out, GPU miners totally ignore them. So the lions share of ASICs will stay on Litecoin. The problem is Litecoin is just mostly speculative so why does it need the extra security ASICs provide? I can't name one large business that has adopted Litecoin.

Without the GPU miners Litecoin will lose a large chunk of community support. Add these second-gen coins that run on top of Bitcoin like MasterCoin and Counterparty and I see LTC becoming irrelevant eventually once the bigger investors exit. It hasn't done enough to differentiate itself from Bitcoin...

I could be wrong, of course.

 

[Torn Mind]

Hmm, I think its time to tap my idle CPU power. Which coin should I mine on a 3770S?

 

[suklee]

Hmm, I think its time to tap my idle CPU power. Which coin should I mine on a 3770S?

Was just going to ask the same thing. Is it worth CPU mining on a Q6600 or i5-2500k? And can CPU mining be done at the same time as GPU mining?

 

[taltamir]

I'm aware that Doge is scrypt also and these same ASICs can mine it. However, the algorithm can easily be changed, something I'm sure the community would be in favor of unlike with Litecoin.

It's true the efficiency gap isn't as large as with the SHA-256 ASICs, but it's large enough that Litecoin won't be profitable for GPU miners anymore soon.

People will stop making scrypt clones for the most part. You rarely see SHA-256 clones these days and when they do come out, GPU miners totally ignore them. So the lions share of ASICs will stay on Litecoin. The problem is Litecoin is just mostly speculative so why does it need the extra security ASICs provide? I can't name one large business that has adopted Litecoin.

Without the GPU miners Litecoin will lose a large chunk of community support. Add these second-gen coins that run on top of Bitcoin like MasterCoin and Counterparty and I see LTC becoming irrelevant eventually once the bigger investors exit. It hasn't done enough to differentiate itself from Bitcoin...

I could be wrong, of course.

The sole reason for litecoin, and indeed ANY scrypt coin to exist, is the fear of overly efficient ASICs rendering GPU mining obsolete.

So the main question is, will the Scrypt ASICS be that efficient.

It isn't easy (but it is possible) to change the hash algorithm, and I don't see any reason for the doge community to make the change which doesn't apply equally to litecoin community (assuming the change is even necessary)

 

[taltamir]

I can't really see why everything is falling so hard.
Tigerdirect is way more positive news than overstock or zynga accepting bitcoins.

Tiger Direct must be automatically converting bitcoins to dollars as soon as they are getting them. This fulfills the top buy orders, and then pushes into the less expensive buy orders, which drives the price down.
This assumes they are getting a whole lot of bitcoin orders. Probably for more mining hardware

 

[Attic]

Could it be a power supply issue? From your description, it only seems to happen when you've got all 3 cards fired up. Are your voltages staying stable?

I had considered it, but unsure how to really test it. The kh/s drop occurs even with only one card running and is somewhat remedied by adjusting cgminer priority. I haven't come across any similar issues with the sempron 145 though.

PSU is Corsair HX850 with a draw of 580watts at the wall when all three cards are running. 12v line is 12.968 3.3v is 3.264 as reported by HWMonitor and here they look stable. In GPU-z the voltage reading fluctuatates somewhat.

 

[Attic]

I can't really see why everything is falling so hard. Seems like massive manipulation and someone is going in and will buy it all cheaper. Tigerdirect is way more positive news than overstock or zynga accepting bitcoins. I'm also hearing google and an online poker network will be accepting it soon. I'd imagine this would make the price go up a decent amount.

The markets can remain irrational for a long time. I hope they don't.

Tiger Direct accepting bitcoin as well as others is a big positive regradless of where BTC price goes in short term.

There's a lot of concern regarding China and there is likely big $$$ manipulating prices, it does everywhere else so it's a longshot it's not corrupting BTC markets. Big drops (hopefully recovered) are somewhat likely IMO.

Mean time I try to buy something, even if small using BTC from the retailers supporting it.

 

[suklee]

I hope you don't have children or animals!

How about a small plastic crate? Go to a container store and you should find something that isn't exactly this one, but maybe something similar: http://www.containerstore.com/shop/dorm/storage/binsBasketsCrates?productId=10022155&N=78109&Nao=20

No kids or pets in the house, just me.

Thanks for the tip, I'll see if I have any spare plastic containers or tin boxes I can use to prop the card up horizontally.

The other option is the move the 7970 to my office (free electricity) but that might not work because:

a) Machine has a Corsair 430W V3 power supply, from what I've read it's do-able but not good for the machine long term. Then again I do have a spare, brand new CX430 in case the PSU dies.

b) OS is Windows 2003 server, gonna be a PITA trying to find drivers that work.

c) Only 2GB system RAM, I'd need 4GB minimum for a 7970? (other parts: Intel Pentium E5700 on a Foxconn G41MXE motherboard)

 

[Soulkeeper]

anyone with a 270x able to lower the core voltage in linux ?

 

[blastingcap]

Linux is very unfriendly to voltage control on any Radeon. You will have to edit the VBIOS or flash it to get that to work, but you may end up bricking the card if you're not careful. Even on Windows, most 78xx series cards and presumably most 270X/270 cards have locked voltage which programs like MSI Afterburner can't change.

 

[Imouto]

https://www.litecoinpool.org/charts

But, but. I heard that difficulty is always up.

 

[Soulkeeper]

Linux is very unfriendly to voltage control on any Radeon. You will have to edit the VBIOS or flash it to get that to work, but you may end up bricking the card if you're not careful. Even on Windows, most 78xx series cards and presumably most 270X/270 cards have locked voltage which programs like MSI Afterburner can't change.

reason I ask is because my 7870 is voltage locked (some of the early ones weren't, but seems most all the "GHz edition" ones were).
I know there are special board specific ways ie: i2c or modified bios floating around, but everything is rather board specific

I wrote my own linux ADL app for changing voltages/clocks, but unfortunately if a board isn't a reference design you're pretty much at the mercy of their bios/design.

I've got a strong appreciation for reference cards these days.

If someone with a 270x (any R9 for that matter) and linux is willing to test wether their voltage is locked or not i'd love to hear about it.

 

[Attic]

reason I ask is because my 7870 is voltage locked (some of the early ones weren't, but seems most all the "GHz edition" ones were).
I know there are special board specific ways ie: i2c or modified bios floating around, but everything is rather board specific

I wrote my own linux ADL app for changing voltages/clocks, but unfortunately if a board isn't a reference design you're pretty much at the mercy of their bios/design.

I've got a strong appreciation for reference cards these days.

If someone with a 270x (any R9 for that matter) and linux is willing to test wether their voltage is locked or not i'd love to hear about it.

Using BAMT i'm unable to change voltage for my R9 270's with anything other than a bios flash. Using VBE7 and atiflash. A backup, "atiflash -s 0 xxx.rom" cannot be restored without bricking the card (fixable) unless you have first opened the backup in VBE7, change nothing, and save and use the saved file to restore OG bios. This was a real fun time figuring out.

On the 270 I have found that 0.975v will work for 975c/1200m with I-19, TC-15232 and hash at ~420 for 110 or so watts. I have one card that needs 1.025v. I have a 270x coming in that I intened to try at 1000-1200 core with 1500, 1400 and then 1200 mem at 1.075-1.100 volts.

 

[ultimatebob]

Tiger Direct must be automatically converting bitcoins to dollars as soon as they are getting them. This fulfills the top buy orders, and then pushes into the less expensive buy orders, which drives the price down.
This assumes they are getting a whole lot of bitcoin orders. Probably for more mining hardware

Yeah, they are using Bitpay as their Bitcoin payment processor, which means that they are getting cash and Bitpay is selling the Bitcoin for them.

 

[dfuze]

Was just going to ask the same thing. Is it worth CPU mining on a Q6600 or i5-2500k? And can CPU mining be done at the same time as GPU mining?

I wouldn't bother. I tried for a while using my 2500K and was getting about 35khs on 3 of the 4 cores. Not worth it when it looks like it was taking about 100w according to the killawatt meter

 

[KingFatty]

The problem is Litecoin is just mostly speculative so why does it need the extra security ASICs provide? I can't name one large business that has adopted Litecoin.

... and I see LTC becoming irrelevant eventually once the bigger investors exit. It hasn't done enough to differentiate itself from Bitcoin...

I could be wrong, of course.

If the question is narrowly focused on whether businesses will adopt Litecoin, perhaps I would agree. But if you ask more broadly about whether *anyone* would adopt it, then I disagree.

I mean, look at Dogecoin. People are actively using it for a specific benefit. It's not a business that made this decision, the people did, as a mass movement. Look at what that movement of the people has done to the value of the coin, it's gone huge.

Now another related question, is whether business will follow the will of the people? Will businesses react to what people are already doing?

So maybe you can ask, will people keep using dogecoin, or will something happen where they stop? Why are they using dogecoin at all? Is something about it being a scrypt coin that comes from miners easily and is not taken over by business, it's the alternative "down with the man" coin? Why don't they just use litecoin then? Will dogecoin just take over because the people are behind it, and litecoin die off?