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Showing 20 of 37 results by drknark
Post
Topic
Board Altcoin Discussion
Re: Who is mining namecoins and why?
by
drknark
on 10/07/2011, 06:05:06 UTC
Since when was there a limit on the increase per difficulty adjustment? I thought it was proportional to the time allotted of 2 weeks, 6 blocks per hour...

Just look at the previous nmc difficulty increases; one was going to be something like 5-6x but in the end it was 4x exactly due to the limit.
Post
Topic
Board CPU/GPU Bitcoin mining hardware
Re: x16-x16 riser cable NOT to by
by
drknark
on 04/07/2011, 12:15:28 UTC
What GPU(s) and PSU(s) were you using?

The test was done (one cable at a time) with a Corsair HX750 and a 5750. Using other cards where the cables were supposed to go finally of course.
Post
Topic
Board CPU/GPU Bitcoin mining hardware
Re: x16-x16 riser cable NOT to by
by
drknark
on 03/07/2011, 09:17:15 UTC

I also think you messed this one up yourself, there are multiple loops in a slot..  looks like you shorted out your pwr supply +v


Messed it up how? I'm confused. The connectors on each side were already mounted when I got the cable. The pci-e connectors seemed to fit tightly in the slot / on the card, I don't see how I could have gotten that wrong.
Post
Topic
Board CPU/GPU Bitcoin mining hardware
Re: x16-x16 riser cable NOT to by
by
drknark
on 28/06/2011, 16:16:52 UTC
Yeah, I tried one from cablesaurus after this incident. It works fine, so I have ordered a bunch of them now Smiley
Post
Topic
Board CPU/GPU Bitcoin mining hardware
x16-x16 riser cable NOT to by
by
drknark
on 27/06/2011, 21:19:48 UTC
I bought some cables from http://www.b2c-support.com/pcie-pciexpress-16x-riser-card-extender-ribbon-cable-p-4154.html.

The first two out of the five I tried refused to recognize the card. The third one however, is when it gets really interesting.. I plugged it in, standard procedure. Made sure there was no possibility of shortcircuiting the exposed (why exposed?) contact points.

So I'm all set up and ready to go. I flip the PSU into on, and hit the power button. First I noticed some really thin smoke, it was barely visible. Then the smell of burning plastic and suddenly a lot more smoke. This is what I pulled out:

http://i1081.photobucket.com/albums/j349/drknark/IMG_0517.jpg

Luckily all my hardware survived. Since their support ignored me I had to issue a paypal dispute to get my money back. So don't buy cables from that site Smiley I would even be wary of similar looking cables at other sites, might be the same manufacturer.
Post
Topic
Board Mining
Re: Anyone know why the network hashing rate has gone down today?
by
drknark
on 26/06/2011, 19:48:44 UTC
It might have had something to do with bitcoins.lc having problems. Probably many miners there missed out on some mining time when the servers were down.
Post
Topic
Board Beginners & Help
Re: 6970 overclocking problem
by
drknark
on 26/06/2011, 19:36:31 UTC
Ah, but now I have a different problem. With overdrive enabled, my 5850 is limited to 775 mhz, even in afterburner it would seem (doesn't matter if I set the clock higher, it doesn't go higher). Since clocking this gives a bigger gain, I'll have to stick with overdrive off. Any solutions to this?
Post
Topic
Board Beginners & Help
Re: 6970 overclocking problem
by
drknark
on 26/06/2011, 19:10:48 UTC
I found that I needed to use CCC to up the voltage 10% on my 6970.  Using MSI Afterburner (on an MSI card) did not seem to work when adjusting voltage.  See here:
http://forum.bitcoin.org/index.php?topic=19488.0


Thank you! This did it. Now getting 400mhash at aggression=7. I googled a bit about power control, it's not actually a direct voltage control. It just limits the power draw of the card. So if the card uses more power than the power control setting, it will throttle to keep it down. So there should be nothing to worry about when increasing this, as long as the temp is fine Smiley
Post
Topic
Board Economics
Re: The Fallacy of Mining Cost and Bitcoin Price
by
drknark
on 26/06/2011, 16:24:33 UTC
Since the difficulty adjusts to keep the supply constant, I don't think that argument is valid. There is no reason for the price to track the difficulty. There are however some reasons why the difficulty should follow the price. When the reward for mining increases, more people are likely to start mining or to expand.
Post
Topic
Board Mining
Re: To people who are technically versed: Will the HD 7xxx series be good at mining?
by
drknark
on 25/06/2011, 12:15:47 UTC
http://www.anandtech.com/show/4455/amds-graphics-core-next-preview-amd-architects-for-compute

There are a lot of info here. Though I guess it's possible that this is referring to the generation after the 7000.
Post
Topic
Board Mining
Re: are people actually still buying new rigs?
by
drknark
on 23/06/2011, 20:05:08 UTC
Quote
May I ask, then why buy "gear"?

Personally I mostly did it because I find it interesting, and I like the concept. Of course part of it is I hope it can make me some money. If I happen to make a profit, then great. If not, it's not like I can't afford it. All I said was you cannot plan on making a profit, not that it isn't possible.
Post
Topic
Board Mining
Re: are people actually still buying new rigs?
by
drknark
on 23/06/2011, 18:26:56 UTC
Nobody buying gear now (if ever) can expect / plan for a profit. It's very high risk, and you have to be willing to lose what you spend. If that's ok with you, then go buy. If you'd rather be safe, then don't buy.
Post
Topic
Board Mining
Re: To people who are technically versed: Will the HD 7xxx series be good at mining?
by
drknark
on 23/06/2011, 10:18:54 UTC
Yep, they are going for more general purpose computing. In the presentation they even stated that one of the few applications that thrives on their current architecture is hashing.. that's not to say the 7-series will be bad for hashing, but they will certainly not be as optimal for it as the current generation.
Post
Topic
Board Mining support
Re: For Basic Miners only - also looking for feedback
by
drknark
on 22/06/2011, 18:21:48 UTC
Quote
First thing you need to do is get a “Bitcoin Wallet”. Because Bitcoin is an internet based currency, you need a place to keep your Bitcoins. Got to http://www.bitcoin.org and download the Bitcoin client for your Operating System. Install it and click “New” to get your wallet ID. It will be a long sequence of letters and numbers. One of most important things you can do is make sure you have a copy of this on a thumb drive and print a copy out and keep it in a safe location. The reason is that if you computer crashes and you do not have a copy of your wallet ID, you will lose all of your Bitcoins. They won’t go to someone else, they will disappear forever. It is like burning cash.

I want to make a correction here. Having a copy of your wallet "ID" (what you are talking about is actually your address) is not enough. You need to backup this file: C:\Users\YourUserName\AppData\Roaming\Bitcoin\wallet.dat. This file contains your private key as well as all your addresses. You cannot access any of your addresses (you can generate as many as you want) without the private key.
Post
Topic
Board Bitcoin Discussion
Re: To all exchanges: Please do this...
by
drknark
on 21/06/2011, 20:58:23 UTC
News just in:

Mt.Gox creates an innovative new security measure. Users must upload their wallet.dat file to the server when they want to log-in for authentication. This cutting edge technology will ensure that all the users information is kept safe and secure.
Uh, Fail? How is that more secure?

"Whooosh" (sound of the joke flying over your head)  Wink
Post
Topic
Board Off-topic
Re: Somebody tell me I'm going to grow out of this....
by
drknark
on 20/06/2011, 09:45:51 UTC
firearm + webcam + live stream

think about it

Why don't you think about WTF you just said? Being online is not a license to act anyway you want.
Post
Topic
Board Bitcoin Discussion
Re: ALL mtgox password has been compromised, change asap, everywhere you used it
by
drknark
on 19/06/2011, 20:05:37 UTC
Bit_Happy, if you had an account on MtGox you could easily verify it. My account was on there. Edit: not same username as here.

Thanks guys for the info on the strength of the encryption.
Post
Topic
Board Bitcoin Discussion
Re: ALL mtgox password has been compromised, change asap, everywhere you used it
by
drknark
on 19/06/2011, 19:43:06 UTC
Man from the future, you seem to know this stuff. How hard would it be for people to bruteforce or crack a reasonably strong password with the encryption in the MtGox file? Say 10 characters alphanumeric.
Post
Topic
Board Beginners & Help
Re: 6970 overclocking problem
by
drknark
on 19/06/2011, 07:06:56 UTC
Well I never did use GUIminer but I might have an old version of Phoenix, I'll check it out Smiley
Post
Topic
Board Beginners & Help
Re: Do I need a dummy plug?
by
drknark
on 18/06/2011, 19:51:40 UTC
Yup, HDMI to your TV will work. That's exactly the way my computer is setup.