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1  Alternate cryptocurrencies / Altcoin Discussion / Litecoin rig -- 3 cards, but 2 are permanently asleep on: July 10, 2013, 06:37:48 AM
Look at this -- The clock rate (and memory clock) of GPU 0 can be set with cgminer as expected.

But I can't set either clock on GPU1 and GPU2 from within cgminer, nor on the command line.

What simple thing am I doing wrong?

GPU 0: 66.4 / 88.7 Kh/s | A:0  R:0  HW:0  U:0.00/m  I:19
76.5 C  F: 90% (4498 RPM)  E: 900 MHz  M: 1200 Mhz  V: 1.118V  A: 99% P: 0%
Last initialised: [2013-07-10 01:37:00]
Intensity: 19
Thread 0: 94.7 Kh/s Enabled ALIVE

GPU 1: 103.6 / 118.1 Kh/s | A:0  R:0  HW:2  U:0.00/m  I:19
37.5 C  F: 20 9.532824E-130: 157 MHz  M: 300 Mhz  V: 0.950V  A: 0% P: 0%
Last initialised: [2013-07-10 01:37:00]
Intensity: 19
Thread 1: 120.3 Kh/s Enabled ALIVE

GPU 2: 121.5 / 118.1 Kh/s | A:0  R:0  HW:0  U:0.00/m  I:19
40.5 C  F: 20 9.532824E-130: 157 MHz  M: 300 Mhz  V: 0.950V  A: 0% P: 0%
Last initialised: [2013-07-10 01:37:00]
Intensity: 19
Thread 2: 89.7 Kh/s Enabled ALIVE
2  Bitcoin / Bitcoin Discussion / What is eBay policy on Bitcoin? on: May 26, 2013, 02:50:27 AM
Apologies if this has already been brought up several times...

Can a person say in their ad, "I accept Bitcoin"?

Or would it be a smart move to embed the Bitcoin logo in the lower-right corner of every image you upload, to let people know you'll agree to settle the amount in Bitcoin after they win the auction?
Ebay does leave "payment method" to the discretion of the seller, at least they used to.

Ebay/Paypal probably hates BTC though, so the "secret handshake" embedded BTC embossed watermark in the lower-right-corner of every image might be the best idea.

3  Bitcoin / Mining / Spent a long afternoon with my Air Compressor on: November 28, 2012, 11:52:47 PM
Amazing how much dust builds up after a year...

I'm shutting down my machines, one by one, starting with the lowest MH/$. I might re-build one or two efficient machines, but that might not be possible given the hardware I have.
Chances are, I'll be spending the next 2 days with my air compressor and a damp cloth trying to make these GPUs/PSUs/etc. look as pretty as possible before I list them on Craigslist and/or eBay.

I did 3 machines already, which is only 6 of my GPUs.

I lived through the $1.50 BTC days and was barely breaking even -- but back then there was no ASIC mining on the horizon.

I'm really, really going to miss BTC mining. I've been doing it since May 2011. It's been a blast. The only time I hated it was when a storm came through and shut off my machines (requiring me to waste 20 minutes restarting them all) -- but even then, I bought a bunch of keyboards & mice so it would be easy to restart each machine. So even storms haven't been a big deal for the past several months.

I'm having a lot of fans die on me though -- GPU fans as well as $16 Holmes personal fans. I probably own about 12 of the latter, in various stages of worn out.

I'll be stuck with many of my video cards because the fans died. Most of the dead-fan-cards are Sapphire 5850s, but I also have (1) 5870 and (1) 5830 with dead fans as well.

For those that are curious, almost my entire GPU stock is 58XX series. The most efficient GPUs available for mining, in case you didn't know. My setups, however, leave a lot of room for improvement. My electricity rate is average, at 0.088 per kWh.

But using all this hardware (18 GPUs for a total of 5.5 GH/s) to make $1 a day on a good day didn't seem worth it. On a bad day (variance), I'd lose money. Plus there are fees when selling BTC on the market, etc. The margins are just too tight.

Anyhow, I'll probably hang around for a while, since old habits die hard. I'm curious how everything will turn out. I'm also a big fan of BTC for philosophical/financial reasons. I'm a small business owner, and I'd LOVE to see something like BTC take over. But I think my mining days are about done. *sigh*

4  Bitcoin / Mining / Huge difficulty spike after Halving -- coincidence? on: November 28, 2012, 04:22:22 PM
Blocks   210003
Total BTC   10.500M
Difficulty   3438909
Estimated   3496486 in 1677 blks
Network total   30.949 Thash/s
Blocks/hour   7.54 / 477 s

I know, variance... but 3 Thash/S is quite a bit to write off as variance, especially since a FEW people at least (maybe quite a few?) are shutting off their GPU rigs this morning.

I've been checking

a lot lately, with this halving coming up (and now past us).

I must say I was shocked at what I saw this morning -- it's as if someone was waiting until after the halving to turn on his ASIC array!
Maybe one of the companies is shipping ASICs?

5  Other / CPU/GPU Bitcoin mining hardware / How does Catalyst 12.6 work on Linux? on: July 04, 2012, 11:39:25 PM
I'm using 2.4 right now -- it works well on all my rigs.

However, I'd like to install something newer on my workstation/rig, because otherwise I can't use modern Linux desktops like Cinnamon and MATE.

Is there going to be a major problem if I install 2.6 instead of 2.4?

Just wondering if anyone else has experience with the 2.6 drivers on a mining rig running Linux Mint 12.

There's just a single 5850 on this machine anyhow, so I suppose even a 10% drop in hashrate isn't a big deal...
6  Economy / Goods / [WTS] PCI to PCI-E converter card (Mine using your old PCI slots!) on: December 14, 2011, 03:32:43 AM
I have (1) PCI card that allows you to plug in a PCI-E video card.

It sounded great to have one on hand, but my setup has long since stabilized and I didn't end up having a need for it.
I hate to have $40 in hardware just sitting there.

It's been stored in a safe place (smoke-free, pet-free) and never been used.

It cost me $40 -- asking $35 or best offer.

Will accept BTC, Dwolla, Mt. Gox codes, etc.

I can provide a pic if needed.
7  Economy / Currency exchange / Anyone selling gift cards, postal money orders for BTC or Dwolla? on: December 07, 2011, 04:42:31 PM
It's been a while since I've looked at the marketplace for this kind of product/service.

I glanced over the first page of topics in this forum, and didn't see anything.

What I'm looking for: A reputable, safe dealer (preferably large) with plenty of positive feedback who I can transfer my dwolla balance to (or BTC as a 2nd choice) and receive a postal money order or gift cards. Obviously I'm willing to pay a small commission for this transaction -- but nothing exorbitant.

I'm in the US, using US currency -- nothing fancy.

8  Economy / Marketplace / Any ways to get Amazon merchandise with Bitcoin? on: November 30, 2011, 07:18:50 AM
I was wondering if there is still a way -- I know a few people offered this service back in June.
9  Bitcoin / Bitcoin Discussion / MtGox daily withdrawal $250 in BTC but $1000 in cash - RIDICULOUS! on: November 18, 2011, 05:26:43 PM
I understand Mt. Gox is mindful of security these days, and that a "verified" account (one where the owner has sent in a utility bill, etc.) carries less risk than an unverified one.

The verified account should have higher withdrawal limits. Fine. No problem there.

But for the unverified accounts, why does Mt. Gox allow only 1/4 as much withdrawal in BTC as they allow in US dollars?
For the unverified, risky, "could be a hacker for all we know" accounts, they could pull out $1000 in USD per day -- which is apparently a balance between convenience and risk.

SO WHY CAN THEY WITHDRAW ONLY $250 worth of BTC every day?  

The actual amount is 100 BTC -- but Helllloooo McFly, BTC aren't 10 bucks anymore! Try $2.50, and they've been around $3 for a long, long time.

I'm not saying Mt. Gox needs to update their withdrawal amount on a daily basis -- but come on!  How about whenever there's a major sea change in the price of Bitcoin? Maybe once a month?

I don't think I'm nitpicking here. $250 is not enough to buy much in BTC. Who wants to spend 3 days withdrawing BTC so they can buy something with it? Is Mt. Gox TRYING to kill Bitcoin? It doesn't even make sense.
10  Bitcoin / Mining / Any news I'm not aware of? on: November 14, 2011, 02:04:04 AM
Or is it just the market doing its thing?

I mean, down 17% in a few minutes? Did some early adopter sell a bunch or something?
11  Bitcoin / Mining / Check those BTC mining cost numbers again on: October 19, 2011, 04:50:24 PM
I've read several posts in the past week (in the "Shutdown point" thread, etc.) where people quoted a mining cost of $1.XX. I have my doubts.
For one thing, the individuals seemed to use a complex mathematical formula, which seems very prone to error.  I prefer to take last month's electric bill, subtract last years' amount due (for the same month), and divide that amount by 30 to get my daily cost. That seems a bit safer, no?  It counts everything from CPU cost to PSU inefficiency, extra AC, fans, the whole nine yards.

Maybe if you keep your PCs in a garage and you live far enough north where it never goes above 60 during the day you could throttle down your onboard fans, turn off all exterior fans, and get below $2. But when you keep mining rigs in your house, and you keep the temp around 70 (=pleasant for human habitation), then Texans and Alaskans are in the same boat. I find that I still need a small desk fan pointed between the cards, on low at least, to keep the top card below 84 degrees. For me, anything over 82 is the red zone. I don't want to damage my cards (remember that when you see my cards up for sale in the Goods sub-forum!  Wink)

I have most of my fans (intake, exhaust) turned off now -- in Texas we finally got Fall. But I'm still using around 90 kWh a day for my 6 GH/s. That's $7.92 for the approx. 3.5 BTC a day I earn. That comes out to $2.26 a BTC. As I type, the current price for BTC is $2.22.

Yes, I'm not in the coolest part of the country, but some Fall weather came in yesterday and the high is 74 today with a low of 43. And while my electricity isn't the cheapest in the country, it's pretty decent at 8.8 cents.

But I'm not at the low end of efficiency, either, as my cards are all 58XX series. True, I have no more than 3 in a machine... but I am using 80+ bronze PSUs, AMD II (dual core) CPUs, 2 GB RAM sticks, and 1 machine runs off a USB drive.

If anything, I'd say my setup is pretty average.

Here's what I don't get:
Estimated 1386207 in 1292 blks
Network total   11.314 Thash/s
Blocks/hour      6.46 / 557 s

And considering that a good chunk of the network is mining on Deepbit, BTCguild, and other NON-MERGED-MINING venues, they are only earning BTC. So how can so many people be earning money (or even breaking even) at the moment?

Remember, there are Mt. Gox fees when you sell the BTC and unless you want to buy Alpaca socks with your earnings, you have to pay a middleman 10% to turn them into gift cards, etc. (I guess you could Dwolla transfer, but then you leave a paper trail.) So we're getting darn close to "below cost" for many people.
12  Bitcoin / Mining / Landlord busts tenant for electric usage? Or mining not profitable enough? on: October 06, 2011, 07:03:00 PM
I wonder what "cryptographic hashing node" he was participating in...

From Craigslist:

I am selling three desktop PC's I built myself. These computers are only six months old. They were built for a cryptographic hashing node I set up in my apartment.
They have top of the line AMD/ATI graphics cards which are optimized for integer operations and ideal for security hashing. They will make excellent gaming PC's.

Here are the full specs:

Athon II X2 250 CPU
Sapphire Radeon 5850 GPU
2GB GSkill RAM
250GB Seagate HD
Gigabyte MA78LMT-S2 Motherboard
Thermaltake V3 Black Edition Case
Raidmax 630 watt Power Supply

The first photo shows all the parts exactly that went into these machines. Second photo is a close-up of one of the 5850's. These are really nice cards built under license by Sapphire. Best I have seen.
The third photo is a close-up of the CPU in box. It's a dual core Athlon series by AMD, one of the most popular and reliable CPUs for gaming. Last photo shows all three assembled PC's.

I am selling three of these! If you want more than one let me know.


These machines do NOT have optical drives. Due to the ease of USB OS installs and direct-to-drive downloads I have not been putting optical drives into my new machines. If you have an old computer you are replacing and want the optical drive from it moved to one of these I will be happy to install it for you. Second, these computers are presently running Ubuntu Linux. Once again, if you own a copy of Windows and would like it installed I would be happy to do it for you.

That's all. Please email if you have any questions. Also, I am available to build other custom computers to your specifications. If interested, email me and we can figure out what will suit your needs.

Thank you.
13  Bitcoin / Bitcoin Discussion / MtGox daily BTC withdrawal limits OUTDATED on: September 27, 2011, 02:22:34 PM
MtGox still limits a person to 100 BTC a day -- which is currently $490 -- a ridiculously small amount.

It was one thing when a BTC was worth $12 or $14.

To prove my point, they allow you to withdraw $1,000 in a 24-hour period. That shows what they were shooting for -- look how they allow only HALF as much in BTC.

I think they need to change their "default" withdrawal limit to 200 BTC to reflect the current BTC price reality -- $5 BTC is here to stay.

I assert that a withdrawal limit of $490 in BTC per day hobbles legitimate customer business/activity.

What do you think?
14  Bitcoin / Mining / More miners = lower Bitcoin price (not why you think) on: September 23, 2011, 04:07:46 PM
The more people get into mining, the more money is spent on hardware.
The more money spent on hardware, the more BTC need to be immediately sold to pay for that hardware.

Some miners hold, some sell immediately, some sell only what is needed for electricity.


The more individual miners participating in Bitcoin Mining, the more coins are going to be put up for sale immediately on Mt. Gox (or another exchange).

Anyone who started mining since July, for example, is going to have to immediately sell their BTC for months to come, if they want to actually break even and start MAKING money. I realize that some people are in this "for fun" or to donate their PC resources in the manner of Folding@Home.

Sure, one block is found every 10 minutes whether the total Network size is 4 Thash or 14 Thash. But if it were 4 Thash, there'd be less guys involved and it would be easier for a few guys to "hold" and make the price go up.

I realize that as time goes on, the effects of miners becomes less and less, and the total BTC in circulation increases.

But has anyone considered that the activity of miners could serve as a "tie-breaker" -- that a small percentage of the market (i.e., Miners) could theoretically make the price move up or down?

But that would never happen now, since there are too many miners involved -- too many miners to have a price greater than $5 or $6/BTC. Because too much money has already been spent on hardware...
15  Bitcoin / Bitcoin Discussion / What's going on at Mt. Gox 9/11? on: September 12, 2011, 01:31:59 AM
The chart looks ridiculous -- besides the fact it only had a few hours' history, it also has a range of 3.85 to 12.50.

Am I to believe that all the bids from 3.85 to 12.50 were at one time today wiped out?

In other words, if I had placed a sell order for 100 coins @ 11.50 last night, and checked my Mt. Gox today, they'd all have sold?

I don't believe it.

16  Bitcoin / Mining / Why 9-month payoffs are still foolish on: September 02, 2011, 06:09:52 PM
Even if you're comparing your mining return to interest at a bank (which, admittedly, is quite low), it's still silly to buy cards that won't pay off for 9 or more months.

Besides the usual argument, "Bitcoin could be $3 in a few months!" which no one can really refute...

What if the 7000 series cards have a much better stream processor count?  Another thread mentioned them having *double* the stream processors. That's only a rumor, of course, but what if something like that happened? Does any of us know what the 7000 will bring? Isn't it prudent to wait until the details have been released, before sinking one's savings into 6990s?

Those who *didn't* buy cards with a long payout will be in a better position, because they can buy the 7000 series cards and keep up with the difficulty increases that will no doubt ensue.

Those already "invested" in $500 5970's and 6990s will have to watch their returns diminish, and won't have as much capital (or free slots) for 7000 series cards as everyone else.

So there are many things to consider when you go "all in" at this point.
17  Bitcoin / Mining / Bitcoin is a closed system on: August 28, 2011, 04:20:15 AM
Bitcoin was supposed to be limited, so hyperinflation doesn't occur. Apparently creating new blockchains is a workaround for this limitation -- a limitation which was put there for the stability of Bitcoin.

Any windfall from mining "alternate blockchains" HAS to come from somewhere -- maybe partially from me, when I sell my 10 BTC for $85 instead of $115? It's gotta be. For every extra dollar gained *someone* is losing a dollar.

I don't think many people understand this whole *coin universe is a closed system. 100% closed. As in, only so much money sloshing around.

John, Mike, Frank, Sally, Alice, and Tom are playing "economy" with seashells and buttons. There are only so many of either, so the economy is stable. They trade them in exchange for US Dollars, too. Sure, once in a while one of the kids begs his/her mom for a few bucks of their next allowance...but basically there is only $5 from each kid in "the system" sloshing around. One person's windfall is another person's wipeout. And if Tom starts another currency, "Acorns" and starts trading them for buttons/seashells, it's bound to bring down the value of the existing 2 currencies. The fact is that only $25 is sloshing around the kids' "economy", which would have to be the total value of the various "currencies" they're trading. Now what if the seashells and buttons were limited, but the acorns weren't? In other words, the value of their existing currency(ies) were stable, but then a second or third currency comes along, and causes the value of the STABLE currency to drop, because demand is divided up.

I think the key point here is: Even if the quantity of Seashells is carefully monitored to prevent hyperinflation, the introduction of a second currency (Acorns) can cause hyperinflation IF two conditions are met: A) the citizens use both currencies, B) the price of Acorns is pegged to Seashells

Zimbabwe experienced hyperinflation, but it didn't affect us here in the US, because no one here uses Zim dollars. Moreover, we don't peg the dollar's value to "how many Zim dollars" it's worth. The same can't be said for Bitcoin and other *coins. The latter are easily traded for BTC, BY THE SAME SMALL GROUP OF PEOPLE.

Anyone holding their wealth (or a portion of it) today in "solidcoins" or "IXcoins" means that much less demand for BTC. No wonder BTC is $8.50 instead of $11.50 like last week.

This describes the Bitcoin universe to a T. It's a closed system. We have X members, with a total of $X they can play around with in this Bitcoin game. People come and go, making and losing money, but when you make $10 it's coming from someone else. (Unlike the real economy, where wealth is actually created.)

Show me a factory that was built with Bitcoins (no USD) and I'll be proven wrong. All we have in the Bitcoin economy (besides gambling and speculation) is a few niche retailers selling things like T-shirts. These "mom & pop" shops have to sell their BTC immediately to buy more T-shirts, since their suppliers don't accept Bitcoin. So you spend 2 BTC on a shirt (causing 2 BTC to be "bought" on the market) and the seller has to SELL 2 BTC on the market. How does it help the market to spend 2 BTC?
18  Bitcoin / Mining / Mt Gox Live BTC graph looking strange on: August 23, 2011, 07:05:59 PM
The mountain of BUY orders looks normal.

The mountain of SELL orders looks like a UFO lopped off the top half of it!

Seriously, I've never seen this before, at least not since I've been following the BTC price closely on MtGoxLive.

It looks as if there's 1/2 as many (or less) orders on the sell side as on the buy side.
The chart displays order volume for $9 to $13 -- $2 on each side of the current price.
Normally you have roughly the same amount of orders $2 less than the current bid price, as you have $2 more than the current price.

For the slow: I'm saying this is bullish for BTC.

Look at the graph for yourselves, and think about it!

Ask yourself: Is the supply of BTC itching to be sold drying up?
19  Bitcoin / Mining / has been hacked on: August 19, 2011, 06:49:55 PM
I actually had their Java-based BTC mining code on one of my websites -- I bet the resources are being used for something other than Bitcoin now -- probably to crack passwords or something.

There's some "green party" rhetoric on the homepage now.

20  Alternate cryptocurrencies / Altcoin Discussion / IXcoin -- enough is enough! on: August 15, 2011, 07:13:40 AM
I hope not too many people are taking this "fork" seriously.

Come on. Taking the BTC source code, changing almost nothing but the name, and trying to compete with Bitcoin (after mining 500K coins for himself, of course)?

It's not like he's actually solving any problems with this rollout. If anything, several problems with BTC (inflation, for example) are being made *worse*.

And people are falling for it?

To better illustrate what's wrong with IXcoin, try to picture what *would* be a welcome rollout. Say a developer came up with a fork, but also had a business partner who had lined up several websites/programs/an exchange/trust system/reviews system/etc. and rolled it all out at once. Then you might be tempted to think, "Hey, maybe this will be just what we need! This could take over where Bitcoin left off!"

But this fork is a total wannabe in every way. I don't know why anyone's buying into this nonsense.

Here is a post someone else wrote, which sums up the situation nicely. I will only add that "Thomas Nasakioto" is a re-arrangement of the letters in "Satoshi Nakamoto":

I mean it should be obvious from his original post.  He comes up with a japanese name and puts a japanese picture as his avatar so he can siphon off a supposed "Satoshi"-esque aura "hey, he is from japan.  must be awesome!!11!".  Then someone finds out he stole some random dude's picture.  He responds by saying "oh, I have him as an avatar because I like that guy".  Convenient.  On top of that, his name is found to be an anagram of Satoshi's full name.  Which is particularly odd because he advertises his real name as such and even went as far as to create a facebook account with the same/name picture to make himself appear as a real person.

And obviously the whole mining 500k coins before presenting it to the rest of the community.  All it takes is a little bit of research to find this all out.

I mean, is he claiming to be Satoshi? He better be. You just don't have two guys with the same letters in their names independently coming up with BTC and IXC.
Sorry, I don't believe in those kind of coincidences. I'm not a fool.

I mean, the British Pound and US Dollar weren't invented by two guys named George Franklin and Franklin George!
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