T4240 gflops for bitcoin
Zynga has announced that it will take Bitcoin for in-game payments, and there is a host of things you can buy through Bit Premier. So, if you want to get into mining – perhaps you have some rack space doing nothing – you need to know what is on the market. It aims to tell you what is available and what it costs. In any other market that’s reasonable, but here products go in and out of stock constantly, driven by an erratic supply chain, particularly for chips.
Prices reflect the value of Bitcoins, prices of rival hardware and the availability of that rival hardware. And much of this is shrouded in truths, half-truths and lies. Comparing the miners starts with understanding what it takes to make a Bitcoin. Briefly, there is an algorithm to work out what is the next Bitcoin to be mined. Solving this requires a number of hashing operations. How many depends on how many coins have been minded previously so it’s an increasing level of difficulty. If the bottom falls out of the Bitcoin market, all that equipment is useless.
There is no other purpose to which it can be put. While you can’t directly link mining hashes with FLOPS, it has been a couple of months since Bitcoin mining passed 1019 petaflops, or roughly the computing power of all the other computing tasks in the word – not allowing for what might go on in the NSA and GCHQ. Which is where this round-up comes in. How much money will it make and how easy is it to run? How lucrative the process is depends not only on the cost of the hardware but the time you have to tend it, how stable it is and, crucially, how many hashes it can do for a given time and the cost of the electricity to do this. The value of coins often drops below the cost of the electricity used to make them.
Although this of course depends on what you pay for your hosting. Data centres in places with cheap electricity, notably geothermally rich Iceland can become very attractive. The costs need to be balanced against the increasing global difficulty of creating a coin against all the other people who are doing the same thing. It’s an arms race of processor design against the rising difficulty. Newer, faster processors are more expensive but stand a better chance of producing Bitcoins against the rising difficulty, and are more power efficient. A further level of complication is that the value of what you are producing is incredibly variable. Bitcoin value in terms of hard currencies are wont to fluctuate by 10 per cent or more a day.
You can see values double and halve almost weekly. Some hardware is bought in Bitcoins but there has been a trend to dollar pricing, even from European vendors. This round up is a guide, a good starting point. You should be wary of a plethora of sites which are selling Bitcoin mining hardware and which don’t have a buzz about the products on the Bitcointalk forum. The business is full of scammers. In general the nastier the website the more likely the manufacturer is to be kosher.
Those who are busy designing ASICs just knock up something in WordPress. Scammers are much more likely to have time for finely crafted HTML 5. A couple of days soak test before shipping can radically affect the profitability of the equipment. The company crowdfunded itself not using Indegogo or Kickstarter but through Bitcoin fora. This points the way for data centres, particularly those mining Bitcoins. The initial product was a card containing 32 hashing chips and which plugged into an HP backplane.