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1  Bitcoin / Hardware / Most efficient SP20 settings? on: July 12, 2015, 05:16:01 AM
I've actually plugged in my two SP20s at least part time for the past few days. I've had all of my gear shutdown since April or May when it got hot here in the desert. But I thought I'd at least run the SP20s again for shits-and-giggles since the BTC exchange rate is up ~$300.

So, what do you experts suggest for the most efficient settings? I've look through some of the other SP20 threads for suggestions but that exact info is difficult to find.

And any pool suggestions? I used to mine at BTCguild but I was a bit surprised to see that they've completely shut down.
2  Bitcoin / Mining speculation / Corporate mining, the downfall of BTC? on: October 23, 2014, 08:31:16 PM
Here's why I think BTC is doomed to failure as a widely accepted payment type.

No one buys BTC on an exchange just to use them to make purchases other than for mining hardware. They will most likely just use a credit card for online or retail purchases. So where is the demand for BTC going to come from and how does it get to the next level of adoption if home mining is dead?

I've mined a significant amount of BTC over the course of 18 months. But I've also actually exchanged many of them to purchase new mining gear, pay bills and make other online purchase. But when I'm done mining, why would I continue to buy BTC on an exchange to use to make purchase at NewEgg, TigerDirect, etc. when it's much more convenient to just use a credit card? Where does the increasing demand for bitcoin come from if not from common people?

Yes, many people speculate on BTC and buy them on exchanges. But I don't think it's likely that these people actually will ever do anything with them other than selling them back to exchanges when/if they reach their target price.

So where does this legitimate popular demand for BTC come from? I just don't see widespread adoption coming anytime soon if home mining isn't available to the masses. Am I missing something obvious?
3  Bitcoin / Pools / Whatever happened to Bitcoin Affiliate Network? on: October 12, 2014, 08:20:35 PM
So the owner closed the (very busy) official thread a few weeks ago and no one started a new one?!

4  Bitcoin / Mining speculation / Home mining is dead. on: October 02, 2014, 09:08:01 PM
I just don't see a scenario where future generations of hardware will make sense at any cost. Efficiency seems to be stalled at .7w/GHs at best. And only the few home miners with sub $0.10/kWh will be able to profit after the next 2 or 3 difficulty adjustments.

Does it make sense for manufacturers to go to smaller process nodes for future generations of miners? It will cost so much more to develop and take so much time, it will be too late for the next gen to make sense for the home miner. And then, would they even bother to sell them at retail?

Massive datacenters will continue to be built by ASIC manufacturers in locations with super-cheap electricity. Therefore difficulty will continue to rise. Even if they could get efficiency to sub .5w/GHs with a smaller process node, it will be way too late for home miners.

Btw, this does not come as a surprise for me. I'm pessimistic about home mining and have been predicting variations of this scenario for months. But I just wanted to get opinions from others. Thanks!
5  Alternate cryptocurrencies / Mining (Altcoins) / BlackCoinPool on: April 15, 2014, 09:11:26 PM
So where is the official thread for this pool?  And yes I've used the search box but it was no help.  Wink

I'm having some issues with my SHA workers reporting low hashrate and need some support.

I'd rather avoid some other backwater forum, twitter or IRC if at all possible.  It sure would be nice if they started a thread here.
6  Alternate cryptocurrencies / Mining (Altcoins) / Merge-mineable SHA256 coins and pools? on: March 28, 2014, 11:51:36 PM
Does anyone have a definitive list of all SHA coins that are merge-mineable, specifically newer coins?

I've read somewhere that Mazacoin is theoretically merge-mineable.  Any others?  And are there any pools aggressively seeking out other SHA256 coins to merge mine?  It sure would be nice if there were some pioneers in this area of mining!

I've been experimenting lately with mining some SHA256 altcoins with my older, inefficient ASICs and it's been quite fun (and in some cases, profitable).
7  Bitcoin / Hardware / Compact Gridseed Miners? on: March 27, 2014, 02:10:29 AM
I just received my first 10 pack of Gridseed miners from ZoomHash and just love these (not so) little 5 chip buggers to death but hate how much room they take up.

Is anyone developing a device that has many more chips, let's say 100 chips minimum in a more standard board layout?

Since these chips run super cool in Scrypt-only mode it shouldn't be difficult to cram these chips close together and cool them with a single 120mm fan like BitMain does.

And please, if someone is already designing such a device, please use standard PCI-e power connectors so we can easily connect them to a ATX PSU.
8  Alternate cryptocurrencies / Mining (Altcoins) / Maza Pool down all day on: March 23, 2014, 05:48:03 AM
Maza Pool

Anyone know what's up?  Is it temporarily down or dead?
9  Bitcoin / Mining speculation / Is it time to shut down 1st Gen ASICs? on: March 06, 2014, 07:21:32 PM
So has anyone done the math recently to determine if it's time to shutdown our 1st Gen Avalon, ASICMiner and Butterfly Labs ASICs?  I haven't, I'm too lazy, lol.

I have an 8 Blade ASICMiner, 3 BFL Singles and 70 USB's running in my garage and it will soon be to warm to run them without air conditioning.  That was some stylin' gear six months ago, lol!  My house is already stuffed full with 2nd Gen gear and the air conditioning situation prevents me from bringing the old stuff inside.  Those Singles are like blowdryers!

I had a quick peek at eBay and it's obvious that the good old days have passed where you could make some good money from reselling this junk. But it's better than dumping them in the trash, I guess.   But if the 1st Gen ASICs are still profitable to run, I may keep them for another month.  But then again, how much profit is the ~280GHs from this gear going to earn in a month?  Is it even worth it?
10  Economy / Service Discussion / Sent double payment to Bitpay address. Help! on: January 29, 2014, 06:28:07 AM
Is there anyway to contact Bitpay customer support.  I went crazy at TigerDirect and made several different purchases.  I mistakenly (DOH!) used the same Bitpay address twice for two different orders.  Is there any way to reverse one of the transactions?  Bitpay is very clever and doesn't offer any customer/purchaser support contact info.  The only help you can find on their site is for merchants... unless I'm blind and/or drunk... both are possible at this moment.  Wink

Thanks in advance for any help.  And apologies if this thread should have been posted in a different subforum.
11  Bitcoin / Hardware / The Scam List on: December 11, 2013, 04:21:42 AM
This is work in progress and I'm taking into account all opinions whenever possible.  Companies that claim to be developing and selling ASICs already receive intense scrutiny in this forum.  My goal is only to take community consensus and put that information into a single thread for quick reference.  A link is included, when available, to forum discussions about each company listed so potential customers can decide for themselves.  I will not link directly to company websites.  It has been suggested by shawneric to include direct links to the company websites which may help this thread's SEO.

Beware of these ASIC companies.  They may be scams.

COMPANY..............SCAM?.......DISCUSSION...WEBSITE (caution, offsite link)
ASICMartConfirmed (by AMT)Link
Xtreme MinersProbableLinkLink
Phoenix TechnologiesConfirmedLink
Mining HeartProbableLinkLink
Boscombe PierlyticsProbableLinkLink
TechTime ElectronicsPossibleLink

Questionable - May be legitimate but exhibits questionable behavior
Possible - Outside chance that this may be real
Probable - Most likely a scam
Confirmed - Has stolen or attempted to steal money/bitcoin from forum member(s)
Failed - May have been a scam but disappeared or shutdown before confirmed

Useful Links
Previous Scam List (not updated)
Mining Equipment Comparison Table

  • Inclusion to this list is not proof of a scam.  It is meant as a warning to take precautions and do research.
  • Exclusion from this list is not a verification of legitimacy.  If you have concerns about a company not yet listed, join or start a discussion on the forum.
12  Bitcoin / Hardware / Isn't anyone else suspicious? on: December 09, 2013, 10:00:24 AM
I'm not naming names... cough... VMC... cough... Bitmine... but are these "other" 28nm players... cough... BlackArrow... cough... really going to deliver a working ASIC ever?

VMC even claims to be shipping right now but not one person has come forth claiming to have received one.

BlackArrow has been claiming that somehow running a Bitfury mine is proof that they can deliver their own design.

Other seemingly legit companies appear to be completely ignoring their own official threads at BitCoinTalk.

I really think there are some major scandals brewing here and most people seem oblivious.  Oddly, the companies that appear to be closest to delivering (HashFast, Cointerra) have the angriest posters in their official threads.  What is going on here?

Something just doesn't make sense here.
13  Bitcoin / Mining speculation / Panic Buying! on: December 06, 2013, 10:18:54 PM
So is anyone else thinking of emptying their BTC wallet and buying more equipment before the bubble bursts? It's already down ~$200 today and I'm feeling very bearish right now.

I'm moving some posts to this thread from another thread since it's was off-topic over there...

Ok, I have to admit that Cointerra is starting to excite me now the way KNC and Bitfury did months ago.

And because I'm very late to this preorder, just how dumb would it be for me to order an April batch TerraMinerIV?  Or if you still think it's a good idea, please tell me why.

I already have preorders for a Neptune and 2 Monarch 600's.  And I feel like now might be a good time to add another miner to my collection before BTC crashes back to $130... "Panic Buying!"  Lol.
14  Bitcoin / Hardware / BFL appears to actually be shipping Singles from stock on: December 02, 2013, 11:22:09 PM
I bought a couple of Singles during the Black Friday sale and they went "In Production" this morning and are now showing "Fulfilled" on my order page.  I haven't received a tracking number yet.  I hope this is for real and not some more shenanigans.

If true, this would make BFL the only current ASIC vendor instantly fulfilling new orders from stock.  Oh the irony! 
15  Bitcoin / Hardware / Who will be the next "bASIC"? on: November 04, 2013, 10:11:33 PM
Except for KNC, it seems like all of the other ASIC vendors are having difficulty bringing their 28nm designs to market.  I'm starting to think some of the millions of preorder dollars and bitcoins are in possible danger of never being returned if the designs ultimately fail.

And it doesn't help confidence levels when the ASIC vendors stop communicating their progress and future plans!  

So what's your guess on who will be the next bASIC?  Or do you think everyone will at least deliver some kind of working miner to investors whether it meets planned specs or not?
16  Bitcoin / Hardware / ASICMiner Cube? on: November 03, 2013, 06:50:41 PM
So what's this all about?

eBay link


From ASICMiner

This is A PRE-ORDER and to begin shipping MID-NOVEMBER.

NOTE: Picture of Blades are not the product and a picture of one of ASICMiners proven products for reference only. Any pictures once available will be updated.

"Cube with aluminum case (overclockable without manual adjustment of voltage):
hashrate - 30GH/s guaranteed, 38.4GH/s theoretical max"

We all know the Expertise and Excellent Products from ASICMiner so
we do expect this to continue with this new product!

This is all the info. we have right now and will add more when it becomes available.
IF ASICMiner does not deliver there will be a 100% Refund so a negative feedback is unwarranted in this case as it's out of our control and we are trying to provide miners with a viable decent Product.

I'm not going to the "Securities" subforum to read through an epic ASICMiner thread to find info about hardware.  So if someone who's in the know, maybe they could get us up to date with ASICMiner?
17  Bitcoin / Hardware / ASIC Manufacturers, one hit wonders? on: October 24, 2013, 08:23:17 AM
It seems like we're seeing a trend now that we've had several successful launches with Avalon, ASICMiner, Bitfury and KNC.  The first batch of devices are released, early delivery buyers are happy, difficulty rises sharply, later delivery buyers are pissed and everyone threatens to never buy from them again.

Not that I feel sorry for the ASIC makers, they've all profited handsomely in a very short time.  But I don't think any of them will survive long enough to successfully release a second generation.  The next company in the release schedule simply replaces them until they themselves are replaced by the next... HashFast, Cointerra, etc.
18  Bitcoin / Hardware / So what's the next Big Thing? [Poll] on: October 01, 2013, 09:57:10 AM
The poll allows for each person to select 2 choices and you are allowed to change your vote, if needed.  

I've purposely left KNC and Bitfury off of the list since we know that they are the real deal.

Now that we actually have some reputable companies who are delivering as promised (or pretty close to it), who are you banking on next?  Who's going to get your $ or BTC?  Who do you trust and why?
19  Bitcoin / Hardware / 55nm USB Miners, as good as it gets? on: September 20, 2013, 05:37:37 AM
It seems like the Bitfury chip USB miners are going to be the next big thing for hobbyist miners.  But is that the end of the line?  Is anyone developing small die size 28nm chips or is everything in the pipeline monstrously sized single chip devices like KnC?
20  Bitcoin / Hardware / Fanboys vs the ROIers... The Custom Hardware Divide! on: September 15, 2013, 07:49:36 PM
Am I stating the obvious when I say there doesn't seem to be very much middle-ground between the two?  It's very similar to the difference between liberal and conservative politics (please don't make this a political discussion).  Each side thinks they have all of the answers and the other side is a bunch of moronic losers.  Lol.

Full disclosure... I admit, I'm a bit of an ASIC fanboy.  Every new product announcement gets my interest.  I try to weed-out the obvious scams but it has become much more difficult.  Currently, I have dozens of USB Erupter, 6 Blades and 2 Bitfury Starter Kits.  I also have another Bitfury October preorder and KnC preorder.  I'm not into this to make money although returning my original investment would be nice.  But I'm having a lot of fun regardless.
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