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Hi everyone, I am investigating into buying a large quantity of PCI-E to USB hubs for users looking to upgrade/modify their Bitcoin rigs. More or less, the PCI-E to USB hub turns your former GPU slot into a USB hub for K1/ASICMiner Block Erupters. There are a few makes and models that I can purchase from the factory, but are generally similar, between a few styles. I'd like to see if there's interest in this from Bitcointalk members. Given the price drops on the USBs, I imagine a lot of people want/need hubs and handlers for them. I'm (also) working on a large order of the "Juiced" 10-port hubs. The dirty secret is that there are generally two or three manufacturers of these type of 10-port, USB 3.0 hubs that are powerful enough to handle 10 USBs. They aren't cheap, but everyone is seemingly sold out, which means a direct buy from the factory may yield cheaper prices, if not a guarantee that they're at least available. So here's what I'm looking at:  These are also available in a vertical configuration, but cost about $2 more at wholesale. Group buy price on these would be about $12.50 USD + shipping if I can get enough orders (MOQ is 200, but I can absorb probably half of that myself) For the loved Juiced" brand hubs (which I believe are actually re-branded Orico's), I have the following pictures of em:  The price on these is (sadly) not very cheap at wholesale, so these could be sold at $45 + shipping in a group buy (I'm getting ready to order 50 of them, with 25 already accounted for). Would there be any interest from anyone here for these models? There are a few companies that sell these models at a slight discount at very high volumes. The price could probably be dropped to $44 or $43/ea if enough were purchased via a pre-order. If you're interested, feel free to comment. I need to check shipping prices, but I usually deal with USPS on these.. I would imagine that a significant number could be fit into either a Regional A box, or a Medium Flat Rate box (so up to $12 shipping). |
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Ebay has essentially killed off me posting more on their service, and I'm worried that my name (+200 feedback) will get deleted if I keep posting.
So I will offer even better prices here. I can provide a good bit of references between Bitcoin-OTC on Freenode, my website/company BuyAHash.com, and the trades I've done here.
These are what I have in stock. Feel free to make offers:
Metro: Last Light - $24.99 / BTC0.25
Tomb Raider - $19.99 / BTC0.20 Sold out!
Crysis 3 - 14.99 / BTC0.15
Far Cry 3: Blood Dragon - $4.99 / BTC0.05
World of Tanks - $25 in-Game Currency - $14.99 / BTC0.15
World of Tanks - 1 Month Premium - $2.49 / BTC0.025
Planetside 2 - $25 in-Game Currency - $14.99 / BTC0.15
Hawken - $25 in-Game Currency - $7.99 / BTC0.08
Please make me an offer on anything. I need these sold. Thanks!
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Would anyone be interested in such a USB hub? I just got one in from a supplier of mine. I still haven't fully vetted the machine with 20 ASICMiner USB Erupters running at once, but I'm rather confident it will handle it (the power supply is capable of 90w).
If this turns out to be a legitimate 20-port hub, would anyone be interested?
Price would probably be about $100 - $110 USD plus shipping.
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A few months ago, I started a website to source difficult to find products for mining, naming it http://BuyAHash.comThus far, we stock a good bit of the items that can't be stocked at places like NewEgg or TigerDirect like PCI-E Risers, Dual-PSU Adapters, ATX switches, and a few other items. But I'm still trying to find new products that are hard to get. I've sourced most of the items I use to build my rigs, but I'm just one miner. We're looking at a few new products, like SATA to 4-Pin Molex connectors, plastic rig casing for Scrypt rigs, USB Eruptors (payable via fiat), USB hubs, and larger/longer/better cable ties for cord management. But we're still looking for the items I'm missing. To make it worthwhile: If someone can come up with a product that can't be found easily, and I can source it, I'll send you one of the items free of charge, assuming its not outrageously expensive. Generally, this request is more for Scrypt miners, as ASIC equipment is really out of my price range and league right now, but I'll consider whatever ideas you can come up with in hopes of reducing the price to build rigs. Thanks! |
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Hi everyone, If you didn't know by now, I run a small (but growing) mining farm. For a few months, we've worked on our own internal rigs, in tandem with our online store, selling affordable PCI-E risers, while expanding into other products that focus on Scrypt-based mining. One product we've wanted to build, and are now able to do so are pre-built rigs: http://buyahash.com/products-2/#category=prebuilt-rig&search=First off, yes, you can build them for cheaper yourself. Our parts are nothing special, other than the fact that we do get a few parts sourced at wholesale like risers, dual-PSU adapters, and ATX reset switches. This allows us to be marginally cheaper than any other company that makes Scrypt rigs (the 3-4 I can find, at least). In making our prices competitive, we're about 10% cheaper than any other company, as far as I'm aware of. We also have a price-match, and performance guarantee on our rigs. They will hash for 24hrs at the rate advertised, or else you get the difference paid back to you, no questions asked. These rigs are milk crate-style, and bare bones. There's nothing fancy about them. Just raw, hashing power on a Windows-based OS. Additionally, we take testing and performance a step further. During the 24 hour validation/testing process, we invite you to give us pool information for the test. You specify the name/pass for the miner, and your rig will start submitting shares as soon as its up and running, even through the testing process. This way, you'll get coins into your wallet even before getting the physical rig. Feel free to choose any pool, and any scrypt-currency. Shipping is included in the costs - just like every product we offer. Feel free to confound me with any questions you may have. We estimate a 2 week production time on any rig builds. Oh yeah, here's a parts list on a 2,475KHs rig: Basic Specs: Milk Crate case with 1/4" thick ABS flooring, configured for an ATX motherboard MSI Z77A-45 Motherboard 8GB DDR 3 RAM Intel Celeron G1610 Processor Seasonic 1250w Gold-Rated PSU 4x Sapphire 7950 4L GPUs (~625KHs Per Card) 4x Powered PCI-E Risers Windows 7 OEM System 120GB HDD Again, the URL is: http://buyahash.com/products-2/#category=prebuilt-rig&search=We accept BTC via a Coinbase button, but also gladly accept LTC, FTC, DGC, and WDC based on fair market values. Feel free to ask away, and rip apart the build! |
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I'm doing an initial buy on extended length PCI-E risers from the factory. I've been in business with regular risers for awhile. The factory just announced they can do these, so I'm buying a small-ish quantity next week. If you're interested, and willing to wait 3 weeks on delivery, I am selling them just above wholesale - $8. http://buyahash.com/products-2/#category=_all&search=They are about 30cm long, according to the factory. Same factory that makes risers for pretty much any store. To my knowledge, no one else stocks these as of yet, and are probably gonna resell for ~$20 or more on Amazon.com and Ebay. Have other products in stock. Working on integrating BitPay soon as well, but still in the process of that. Enjoy! |
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I've been reading about this for awhile. Some users are using two risers to lengthen how far the GPU is from the motherboard... Seems like its rather costly (twice the price of a regular riser + a female-female adapter). Would there be any interest in some extended-length risers? Every store is typically 19cm, but I may be able to get a manufacturer to fabricate 30cm long risers. The cost would be a little higher than the standard 19cm, but well below what it'd cost to essentially double up. If there's enough interest, I may stock a few at my store, www.buyahash.comThanks! |
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Hi everyone, I'm happy to announce that our stock has just been launched on Litecoin Global: https://www.litecoinglobal.com/security/BUY-A-HASHIts a simple, straightforward, and transparent mining bond. You pay in LTC that is approximated at $1.00 USD. In return, you get 0.5 KHs of mining dividends, send to you weekly. No frills, no gimmicks, no highly variable payouts. Just a simple dividend that you get weekly, in addition to a callable bond that is redeemed 120% of face value, should we elect to do that. I've been working with private, fiat investors for about 2 months now, building and deploying rigs. We're currently at 15 MH, with about 7-8 MH of additional capacity. This has led us to look at commercial buildings to grow our venture out. Now that we're closing on a lease of a commercial building, we're looking at securing additional funds for the project. We have a few businesses as a side project - selling PCI-E Risers via our website, selling pre-built rigs, and developing some other stuff to sell via our website. Since we have a few facets, we wanted to keep this as a bond instead of company shares, since it'd take away from the mining contract. Additionally, we're a duly-formed LLC in the State of Ohio. We're working to make this as legitimate and compliant with state and federal laws where and when possible. Our goal is to begin rig deployment in mid-June, so there's enough time in between now and then to take any and all questions. Feel free to ask any questions not contained on the URL link that has contract/business details. Thanks, and hope to work with you soon! |
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Hear me out on this one - I'm not a programmer, mind you, so my statement may be totally irrelevant. One issue I have with coin mining, as a miner, is difficulty. Difficulty does nothing other than simply make it harder to mine coins. It is not relative to actually solving the blockchain, but rather something to ensure that the same number of coins are mined each day. Generally, I don't have a problem with the inflation issue, as I'm a huge fan of Milton Friedman, and Austrian economics (yes, I know he's Chicago School, but enough with semantics). But what we're essentially doing is wasting tons of hashing power on something that really has no benefit. Enter the "Real-Work Blockchain" Rather than using hashing power to simply manage the blockchain by solving a nonce which increases with difficulty, the hashing power has the dual purpose of not only cryptography, but things such as Folding @ Home, or Seti @ Home. In doing such, there are multiple of advantages: - Hashing power is utilized to solve actual problems and issues, rather than just meaningless nonces
- Flexible algorithmic requirements would render FGPA, ASIC, and other rigs useless, unless they could provide real-world benefits to humanity
- Legitimizes coinage as useful and beneficial to society, not only as a coin, but a means of bettering society
- Could expand to additional types of work, which could be peer-reviewed and accepted - a global, intra-national system to provide advancements to humanity, much in the way that coinage is also intra-national
- True value is created with these "Credits", because they are backed by tangible usefulness, thereby increasing adoption and understanding of what this credit is.
- Businesses, universities, or other entities that utilize said hashing power have huge incentive to create services and goods that accept these credits to increase their value, as more value = more hashing power.
Of course, there are challenges with this. One would have to ensure that the research and computer power wasn't used for malevolent research. That would likely be an important job of the foundation that creates the coin. I could envision a system that is incredibly flexible in regards to algorithms, and could take on any type of work that requires large-scale computing. It would have to likely abstain from being a for-profit system (e.g. a company attempting to subvert the process by paying to get work onto the blockchain). However, such greed brings up an interesting situation: Companies and universities would know that with price inflation of coinage comes interest and hashing power. Therefore, it would be in their interest to increase what coinage could be used for, thereby increasing its value, usefulness in the economy, which eventually results in hashing power. Anyways, its just an idea. I'm not a programmer, and have no idea how feasible all of it is. However, I am a miner, and think that it'd be much better that my GPUs go to something that not only earns me profit, but betters society in a very beneficial way. |
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I know the market is getting filled with vendors, so I thought I'd throw my hat into the ring. Please note that these prices are for a pre-sale. My risers are still on the way from the factories, but they should be here mid or late next week. Because of you taking a risk on ship date, the prices are better than anyone else, period. http://buyahash.com/pci-e-risers-for-sale/They're just $5.00 for unpowered, and $7.50 for powered, in either 1x-16x or 16x-16x configurations. Free shipping as well. I accept all types of coins, assuming they're currently traded - BTC/LTC/FTC/TRC/FRC/NMC/PPC/ECT Thanks! |
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Will entertain all offers for 2,000 FC.
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I have a few Crysis 3 keys for sale. Make me an offer on them in any coin format, and I may take it!
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Who owns a 7850? Is there a preferred brand? Are the 2GB models better than the 1GB models?
What kind of hashrate should I expect from a 7850? It seemingly is between 350 - 400, but wanted to hear opinions. I am thinking about buying some, since they're plentiful at the moment.
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Hi,
I have just recently attempted to add 2 cards to my rig, for a total of 5 cards. However, one card is constantly having hardware issues in regards to installation. Windows can detect the GPU, but Windows spits out Error 43, and refuses to utilize the device.
The motherboard I am using is a MSI Z77A-45 (7x PCI-E slots).
I've switched around the PCI-E slots (using powered extenders), installed a new BIOS, and still haven't figured out what the issue is. Its seemingly always on slot 6, even if I am not filling that slot with a card.
If anyone can suggest why this is happening, I'd appreciate it. I have an identical rig that I am setting up, and am going to see if it gives me a similar error.
Any help is appreciated. The person that can resolve my problem gets 2.5 LTC.
Thanks!
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I am getting into more serious LTC mining, and am building multiple rigs.
Recently, I had 4, 20 amp breakers installed for 110v outlets. After (finally) getting a kill-a-watt, I've determined that the amperage draw from these rigs is immense - about 9 amps with 5 GPUs. So I could run 8 rigs. However, I'd like to run more than that - preferably 12 or 14. Additionally, my power box is rated at 200 amps, which would worry me if I tried to install more breakers/110V circuits.
Enter the idea of 220 volts. I've seen videos/pictures of people running Bitcoin rigs off of 220V, which allows them to run a lot more systems off of one circuit (one such person was running something like 5 rigs off of one 220v dryer outlet).
So my questions about 220V....
1. Wiring wise, what would I have to change if I wanted to run 220V? Would I have to have everything changed out - breakers, wiring, and outlets, or just breakers and outlets?
2. My PSUs are rated for up to 264v (Seasonic 1250W). I assume these will work, correct? I will just need an adapter to go from the 220v outlet/power strip to the PSU, right?
3. How stupid, crazy, or risky is this idea? Mind you, the wiring and electrical installation would NOT be done by me. I have a professional electrician that has done work for me, and installed the 20a breakers.
Or are there any other suggestions for running more rigs on less amperage?
Thank you!
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Hello,
I noticed that there are a lot of people getting onto the LTC bandwagon. It seems that 7950s and 7970s are arguably the best for LTC mining (from my understanding). I have a few 7950s on the way, so I was curious what some good settings were to shoot for. Most 7950 owners are reporting between 550 - 620 khash once some optimization is done.
If anyone has good settings, let us know! If I can save a few hours on a setup for 5 7950s, I'll gladly throw some coin to someone that can give me a batch script, or at least point me in the right direction for settings.
Thanks!
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