Word has it, they are the tastiest chips around, cooked by top Swedish chef's!

After many tests it looks like these are my best settings: 28ms, 450MHz, 1334mV, target temp 30°C and it runs with 53°C giving in average 43.8GH which means 8.76GH per bitburner xx.

I would like to run 5 miners with 5 different settings to test it out but till now i still wait for the answer if its possible to do without the first cgminer finding all miners and using them all.

hmm hp10 blows up on my core i7 795 box..

Multiple c1.xlarge

it's this at the moment: https://blockexplorer.com/q/estimate

Write in this topic if your willing to take a class action.

I'd like to write today about a small piece of why we are confident our product is better than KnCs.

So today's topic: Our silicon design is superior.

Both are 28nm designs, but HashFast's is far more powerful and energy-efficient.

Let's look at KnC's 28nm ASIC, and some basic details as we can pull from their documentation. https://www.kncminer.com/news/news-25

First let's calculate the hash rate per square millimeter of silicon. This is a measure of the efficiency of the design.

Honestly, we don't need much to estimate this. The lid size for their chip is enough to make some good estimates.
 
KnC's diagram shows their chip has a 41.2mm lid, and implies that the silicon under that lid may be between 30mm x 30mm, and 36mm x 36mm. (The additional space is needed for decoupling capacitors and such.)
    Let's use those two numbers as bounds for the size of the silicon under the lid. If the die(s) take up just 30x30mm of the space under the lid, then:
     30x30mm = 900mm^2
     100 GHash / 900 mm^2 = 0.11 GHash/mm^2

    Or if the die takes up a bit more of the space under the lid,
      36x36mm = 1296mm^2
      100 GHash / 1296mm^2 = 0.077 GHash/mm^2

HashFast's Golden Nonce chip: I don't have to estimate the size because I work at HashFast.
   One 18x18mm die is able to do 400 GHash (nominal - more overclocked**)
   Hashing per square mm:
      18x18mm = 324mm^2
      400 GHash / 324mm^2 = 1.23 GHash/mm^2
   
Let's compare those numbers, for the high and low values for KnC's chip:

      1.23 / 0.11 = 11.2
      1.23 / 0.077 = 16

So HashFast's chip is between 11 and 16 times more efficient, in hashing per square mm, than KnC's chip.

This has an impact on how fast we can deliver units to customers. One wafer of HashFast's chips has the same capacity as 11 to 16 wafers of KNCs. For each silicon wafer delivered by the foundry, KNC will be able to satisfy 11 to 16 times fewer customers than HashFast will be able to. You'll get your units faster once production starts from us.

In addition, the HashFast chip operates much more efficiently. You get four times the hash rate for the same amount of power (250W). (Based on 250W for 100 GHash from KnC, and 250W for 400 GHash from HashFast.)

Calculations such as this are a small part of why we are confident that we are delivering a quality product to our customers.

We figure it's time to start sharing.

Amy Woodward

VP Engineering
HashFast

** P.S. Simon made me put in the line about overclocking. But as per the 'warranty' thread, no one would ever do that to our beautiful chips, right?

Don't think you actually thought things through even though this has been discussed about 1000 times so far . When using BTC the risk goes exclusively to the buyer. When using CC the company has to assume some risk as well because there might be a few people that will ask for a refund. This is normal and should be part of the business plan. If you can not assume even that small amount of risk especially at this stage in the game, you'll have to understand why KNC raked in thousands of orders while these guys are struggling to sell 500 units.

Frankly cypherdoc's explanation of the punk scenario is laughable. Should we also assume that only punks order from HashFast? That's ridiculous. Also, I am sure this is not news for many people but KNC accepts cc/Paypal, Cointerra will as well according to the latest news and if I am not mistaken Bitfury does as well (could be wrong about this one).

let's extend your point even further looking into the future.

everyone here, especially eve, keeps spamming the threads about using cc's and paypal.  what about the punk that orders from the company that has stock in hand with cc/pp?  he receives his machine within a week of ordering, plugs it in, and starts mining.  60d later minus one week, he claims it's not working, sends it back, and does a chargeback. 

so many of you want to get the best of both worlds when it comes to this intersection of BTC vs cc/pp.  it's not going to happen.

They've changed their policies.