What is Bitcoin Mining? How Does it Actually Work? (2020 ...

Looking to buy a single asic.

I used to mine a few years ago. I started with 3 Asics from eBay that I found a good deal on. They were loud and worked well but ended up selling them and making a 1080ti x8 rig. I now want to get back in as I have free electricity for the next 6 months.
I can only run one asic as well. I've never ordered from bitmain or any other risky website where you have to send Bitcoin and wait a month for a package. And there's a lot of fake websites out there. What do you guys recommend?
Since I have free electricity is there a specific asic I should go for?
submitted by CraftyPoster to BitcoinMining [link] [comments]

[WTS] Two AMD Radeon R9 390X GPUs (used, great for mining Etherium/Bitcoin/etc.) for $700 shipped

I'm selling two AMD Radeon R9 390X video cards I've had in my gaming rig. I haven't done any mining whatsoever with them, and hardly ever really pushed them. These are great for mining cryptocurrency due to their relatively high hash rates. Bitcoin, Etherium, Litecoin, Dogecoin, whatever you want to mine, these will do the job!
I know what they go for on eBay and other places online. I'm looking for $700 and that includes shipping anywhere in the United States of America. Shipping available internationally at your own additional expense (exact cost only). They work fantastic and I'll package them very well to make sure they get to you in the same great condition they are in right now.
I can provide tons of reputation and feedback. $700 via Bitcoin and these are shipped straight to your home or office.
EDIT: SOLD! Thank you to those who contacted me about these!
submitted by WilliamBott to BitMarket [link] [comments]

My Butterfly Labs Story (Advice Requested)

You've probably heard this story. I first learned about bitcoin in late march of this year, and for some reason, mining to me seemed like a much better prospect than just buying bitcoins outright. (Smart, I know.) So I came upon BFL, and though I knew the company wasn't great, at the time, they were the only one around that had an affordable mining rig. They said that new orders should be shipped in June? Well, heck, even if I didn't get it until August I'd still be okay.
So anyway, in September, I finally gave up on them shipping it, requested a refund, requested a chargeback from my credit card company. While my bank/credit card offered me a temporary credit for the price, the final determination is still under review. I was worried that in this review time, BFL might finally ship me the miner, which is almost worthless as of today, so I sent them an email telling them not to ship it to me, as this case is still under review. Sure enough, in my inbox yesterday, I got a little message from BFL informing me that my miner has shipped!
So now I'm not sure what to do. I know that I could sell it on ebay for a fraction of what I paid if I just accepted it. I could not sign for the package and risk having it sit in a Post Office, only for it to lose even more value in case my credit card denies my claim. I'm afraid that if I sign for it, my credit card/bank will deny the claim. What I really want is for the miner to just go to the next person on the list and just get a full refund, but I'm not sure what happens in situations like this. Any advice would be helpful.
The worst part of it is that since I've had so much money tied up in this investment, I haven't been able to put anything into buying actual bitcoins, so it's been pretty frustrating to watch the price double in the time since I bought it and me still without a bitcoin to my name. I'd gladly buy some bitcoins if I knew this miner would get refunded, but I can't justify the expense if I'm going to get a useless miner and a huge charge for it. Bleh.
TL:DR - Got BFL'd. While waiting for a chargeback to get approved, BFL finally decided to ship it. Need advice on what to do before it gets here. Thanks!
EDIT: Thanks for all the advice. I'm going to refuse the package and hope for the best!
submitted by hotdogsafari to Bitcoin [link] [comments]

[WTS] Interest check. 250 x Sapphire R9 Nitro Fury X 4GB HBM - Fresh from RMA!

Checking interest and price point for larger volume of Sapphire R9 Fury (http://www.sapphiretech.com/productdetial.asp?pid=B962294E-9DBC-470E-A817-46EC0AA5B14A&lang=eng) cards.
Performance ballpark: Currently most profitable on ETH/XMRv7 (may be smaller coins that are more profitable but I'm not doing that research)
STOCK hash/Watt-card (with only minor watt/mem/core setting optimization in ethOS:
XMRv7(Cryptonite v1): 700 hash/Sub 100w (75W with bios mod) ethash/ETH (currently mining metaverse): 30MH/s/sub 125w (can run VERY lean with bios mod)
Due to the HBM memory these cards are very fast and power lean on memory intensive algorithms such as Equihash (before ASIC hit). Where they crushed all other cards offered by AMD.
Price ballpark: $175/card negotiable to a certain extent but don't low-ball me below $100 please, you just waste my time and yours. (I know it's irrelevant but eBay 'trending' price is $243. Still kicks RX series ass for gaming and other applications and fresh from RMA they are all new/non-mined cards + one of the most popular upgrades for professional Apple users I guess. Probably still a solid money maker to just eBay them all but I don't have the time or energy to deal with that BS.)
Not aching to sell but if someone is interested I am listening to offers. Obviously I accept Escrow, Wire (I can invoice/PO), local pickup in Midwest U.S or shipping ONLY WITHIN THE U.S. I can provide picture proof provided serious interest. Been active here for 5+ years under account that has since been lost/hacked so I know how things work
ONLY US BUYERS!
I also have 300+ PSU (6-700w gaming PSU from EVGA, Corsair, No-Name), and several hundred 'mining rig frames' in plastic, metal, and wood for CHEAP!
BitcoinTalk Link to Contact
submitted by MarketBot to HellsCrypto [link] [comments]

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Bitcoin Mining $3,500 So Far! - Zcash Rig Update Day 9 - EthOS on SlushPool

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