Bitcoin Forum

Hi,
I want to invest not in a ready miners like s9, but want to build it.   So I have several questions.
1) chips,   please explain what is the difference between for example 14nm and 28 nm chips,   this site is selling Bitfury 55 nm chips.
http://atelcominer.com/bitcoin-or-sha256-mining-market-1831557522/sale-100000pcs-bitfury-nano-chip-bf864c55-38ghs-per-chip.html?sort=p.price&order=DESC]
what does it mean "nm" and also can you give me a list of these chips from fastest to slowest(if it is possible of course).

2) except PSU and cooling what parts do I need for building a miner.   Can you give me a info or good video that explains what is inside the miner.
3)  what do you think about this, I think 600USD for S9 looks cheap   http://atelcominer.com/bitcoin-or-sha256-mining-market-1831557522/high-budget-sale-50pcs-new-antminer-s9-hash-rate-700th-s-return-of-invest-only-2-months.html?sort=p.price&order=DESC

1) and 2) If you are asking questions like these, I think you may be needing a bit more experience before attempting to construct your own ASIC.
3) Those $600 S9's don't exist, atelcominer is a scam.

thanks for reply,  there is a people that can do it, I want to lean something before going straight to them.
I'm reading a lot of info,  but I found it really hard to clear everything about chips and parts.  That's why I'm asking for help.

Good luck, maybe think about GPU mining?

thank you.

nobody?????   help please

Ok, I understand that astelcominer.com is scum, but we all no that Bitfury is not  ;D   is there someone who can say several word about these bitfury chips?   or give me a useful link.
http://bitfury.com/products#container-datacenter      here they claim that their ready data center can be easily upgraded when next gen. chip will be available.  This is very interesting because as I know S9 can't be upgraded, so after a short period it will be useless. 

How about "$1m minimum investment"?

So their minimum investment is 1m?   
I've seen people who got ready hardware from Bitfury but they invested no more than 200k.   They just don't want to share any info.

As others said in this thread, you might want to experiment with mining before building an ASIC.
You can try by mining with your own computer. Although it's not profitable, it will will help you understand the basics.

I've been around for a while (bitcoin wise) and even with an engineering background, I'd have trouble building an ASIC without asking for help from an electrician.

I don't want to build it myself,  engineers do it. I just want to understand the basics of this ACISs befor going straight to them.  I saw Bitfury videos but they are promotional only.   I need hardware info.