I just got a 2nd 5970 installed, but guiminer will only let me use two cores for mining. All four cores correctly appear in my device manager, as well as in other tools such as MSI Afterburner. I can get both cards to work individually.

Anyone got any ideas/tricks I can try to get all 4 cores working?

I always assumed it was something like this:

Pool A pays X per share. (i.e. a PPS system like deepbit)

Pool B pays Y=50/Z per share, where Z i the current number of shares  submitted for that block.

If you are mining for pool B, and get to the point where the total ammount of shares submitted for a block is so that Z>X, the miner would make more by switching his miners to pool A until pool B solves its block. Each additional share submitted to pool B until it starts a new block will be worth less than each share submitted to pool A.

Or am I completely mistaken?

I just looked over the block statistics, and there seems to be quite a high % of invalid shares in the last couple of hundred blocks. Is this because of the DDOS attacks or is there some other reason for this?

I just ran memtest for about 24 hours, and it appers to have failed miserably. After the first 8 hours or so I had 1 error in the "red" part of the display. Now, after the temperature in the room has risen a bit, I have the whole red part filled with errors just from one test from one pass. Not sure if I can scroll this text in any way, but I'm guessing it's pretty bad.

The summary part of the memtest says I have had over 1200 errors in 26 passes.

I'm no expert on reading memtest results, but I guess it's safe to assume that this is bad. I'll have to pick up some new RAM to test if the system will run fine with the 5970.

A couple of error messages I have gotten (last 10 crashes) and the corresponding driver/file that is supposed to be causing it:


I'm not really sure what to make out of this. I seem to be having all sorts of errors, in all sorts of drivers. After spending some time googling theese errors I did notice a lot of people suggesting that several of theese could be caused by RAM issues. I have the cheapest RAM I could find installed in this particular system, so this could be the problem, but why would it run perfectly fine with say a 5850 card in it, but keep crashing as soon as I install the 5970? Any ideas?

Didn't work. Crashed some time during the night. Temperatures after around 8 hours of operation was about 76C, so it should not be the heat that is causing this. Guess I'll start googling error messages from the dumps.

I tried to read the minidump files with some viewer I found. I opened 5 different dumps, and all of them had a different error listed as the reason for the crash. I guess that is a dead end. Or maybe I just don't know what I'm supposed to be looking for in those dumps.

I have uninstalled the 11.5 drivers and installed 11.6 now. Going to try running phoenix with the modified kernel and see if it works better this time. Going to leave it at stock settings and see if it still runs tomorrow morning.

I'm having some problems with my Gigabyte 5970 card. The card is running at stock clock settings (also with underclocked memory). Catalyst 11.5 drivers. GUIminer with "-v -w 128 -f 10" settings.

When I start mining with that system, it runs for anything between 10 minutes and ~24 hours before crashing/rebooting for no reason at all, typically falling in the 8-12 hour range. I have been trying to monitor the temperature of the cores, and they appear to be within the normal operating range for this kind of card. No higher than 85C now that I'm running it as a stand alone card.

Anyone have any insight as to what might be wrong? Is my card broken, or can this be worked around?

Why do you assume that everyone buying or selling AMD cards have anything to do with bitcoin mining?

1.9M is called pulling a random number out of your arse.

Last time I checked, Mt. Gox was open for registration, so this is not about being able to trade or not. This is about people making the staff at Mt. Gox waste time just so they can get to keep their username, and making the people who have actual funds lost in the system wait even longer for their accounts.

I own 5850, 5970 and 6870 cards, and they all have about 1-1.2% stales, measured over several weeks of running.

I'm glad people like you are filling up the lines so that people with actual funds in their accounts will have to wait just a little bit longer..

Yeah, I did provide the last balance, or at least as close to it as I can remember.

Maybe the problem was that I submitted this with a lot of other information under the "other information" category, and not in the "last balance" category.

I have now submitted the IP I used, FROM the same IP that I used. I have submitted information about the deposits I made, including ammount and address the BTC was sent to. I have provided information about every sale and purchase made on my account using the funds I deposited.

Even with all this, I still get asked to provide more proof. What more proof can I give? Are they just blowing smoke up our rears with all this?

I can see why people who are new to BTC use the online wallet hosting sites to play around with the system, but why on earth would you leave almost $100k worth of BTC in the hands of some random website? Theese are not safe financial institutions, you have no guarantee that they have any measures in place to keep your money safe. You don't even know who is behind the site. For all we know they might just pack up and disappear with all the deposited BTC once the combined total reaches a certain ammount.

Would you put $100k in a suitcase and give it to a stranger you met on the bus for safekeeping?

I got this spam as well. I do not appreciate people mining hacked data that is leaked and using it to promote their own services like this.

The idea that we will see a 50% jump in difficulty every time for the next 39 adjustments is VERY unreasonable. Let's do the math here.. 1.5^39=7371554 and change. Basically you are assuming that the hashing power of the network will increase by ~7.5 million times it's current value. At the systems current level of maturity I seriously doubt that.

Let's do some more estimates around this figure.. Assuming 15000 GPUs make up todays network. (I'm probably off by quite a bit, but not by any significant order of magnitude) For your assumption to hold true, in about 2 years we would be having 15000*7371554=110573310000 GPUs in action. Or about 20 GPUs per person on the planet. I'm not even sure if we have enough power on the planet to run that many cards.

If you truly beleive this then I suggest you go out and put all your money in AMD stock on whatever exchange they are being traded. For everyone else I suggest you just keep your miners running. Growth in computing power/increases in difficulty will at the end of the day be connected to the profitability of this kind of operation. Right now the profits from mining are insane, and we have lots of people moving in to take advantage of that fact. Eventually we will get to a point where you need a full year or so to break even, and at that point people will probably stop adding more power to the network. But as long as we are seeing crazy profits (like less than 3 months to completely pay off a rig) we will keep getting more and more rigs set up at the rate we are seeing now.

So 5 posts and 4 hours? Phew, for a while there I thought it was 40+ posts.

A local dealer is having a clearance sale on some GPU watercooling systems. (Brand is called CoolIt) The units are for various GPUs from the ATI 5xxx series and Nvidia 4xx series, and contains a full cover waterblock and 120mm radiator with the pump and everything built into a sealed system. They are cheap enough that I figure they would be worth the investment just for the noise reduction alone. My 5970 is running at 90 degrees right now, so I could probably use the extra cooling as well.

The problem is they come with a warning that the waterblock will not fit certain non reference designs. From the 5000 series I own some Gigabyte 5970s and 5850s. They have 5970 and 5870 watercooling kits for sale. What do you guys reckon the chances are they will fit my cards? I'm hoping the 5970 will fit at least? I know fitting a 5870 kit on a 5850 might be more of a stretch, but I just heard a rumor that it might work. Has anyone here dismantled enough GPUs to confirm or deny this?