SummaryBM1380 is a Bitcoin mining chip developed by Bitmain, a Chinese based IC company. We use the chip to build S1 Dual Blades, nearly a thousand of which has been sold to the Bitcoin community.
BM1380 can run at different mode, depending on the favorite of the users. It can run at 0.75V core voltage and 0.68J/GH high efficiency which can compete with some 28nm mining chips. At 0.75V the hashing board runs without a heat sink. BM1380 is also running at 1.1V or 1.25V voltage sounding reliably, doubling the hash rate and the efficiency spec still better than most of other 55nm node chips on the market.
Now the chip is open for purchase.
About the Chip Process Node: 55nm
Number of Cores: 8
Package Type: QFN56
Packaged Chip Size: 8 mm x 8 mm
Rated Hash Rate: 2.8GH/s @ 1.1V
| Voltage(V) | Core Frequency(MHz) | Hash Rate(GH/s) | Current(A) | Power Consumption(W) | Power Efficiency(J/GH) | | | | |
0.75 | 200 | 1.60 | 1.423 | 1.07 | 0.681 | | | | |
0.85 | 250 | 2.00 | 1.993 | 1.69 | 0.847 | | | | |
1.00 | 312.5 | 2.50 | 2.821 | 2.82 | 1.128 | | | | |
1.10 | 350 | 2.80 | 3.359 | 3.70 | 1.32 | | | | |
1.25 | 400 | 3.20 | 4.205 | 5.26 | 1.643 | | | | |
Every chip will be tested as qualified before shipping out.
PriceThere are
10,000 chips in a single lot. Now the price is
99.9 BTC per lot. As every chip can hash 2.8GH/s @ 1.1v, it is 3.6
BTC/TH/s
Every lot has
32 extra chips for testing, shipping within 3 days after purchasing.
If buy up to 5 lots, you can get a 5% discount from the 11th lot.
Pay extra 9BTC can accelerate the lead time to 4 weeks.
Open SourceWe are going to open the entire designing documents and bin file for designing and produce the S1 Dual Blades hardware. For some complicated parts, we may provide some parts of the miner at our cost.
We will sell control board at cost for chip buyers.
We will upload the the reference design in a few days, to
https://github.com/AntMinerLead TimeLead time is around six to seven weeks. We promise lead time to each customer before making payment.
1. The wafers have been ordered already and under fabrication before we open sale.
2. We also reserve safety chip stock to hedge potential delaying risk and guarantee our delivering promise.
3. We promise every chip buyer a delivering date, which will be accurately planned. Large orders will not be able to deliver in a single day, but we will commit a period before buyers making payment.
Pay extra 10% can accelerate the lead time to 4 weeks.SupportWith our open sourced document, we think a qualified hardware engineer will be able to build a miner or even design an improved version without any support. However, we know that many chip buyers are financial back grounded and it is very likely that their hardware engineers are contracted, and not fully devoted into this. To move things faster, they may need help.
We do want to provide support to our chip buyers, while we have very limited human resources. And we are all not native English speakers, so supporting global customers will cost us even more time. So we are now encouraging technicians and hardware engineers in this community to stand out, and read into our document, and provide help when our chip buyers has any trouble in building a miner. This is how this mechanism working out:
1. If you are a hardware engineer who is interested, please read into our open sourced documents, decide whether you can handle all the problems. We hope you have the experience and resources to handle the production management locally.
2. Stand out in this board, announce your language skill, location and back ground, so our chip buyer may find you. We will list you in our official store when it is put up.
3. All chip buyers has a 2% supporting budget. It means that a chip buyer can tell us who has helped him out, and you will get this budget.
How to order:Please fill this form, and we will send you the payment address and a promised shipping date.
via info@bitmaintech.comhttps://docs.google.com/forms/d/1dhozMBbO6ZsM_kT4Nf5tQD-qi3oh7JXOhTlh5RSyKcc/viewformPlease write down and check the PIN, so you know it is BITMAIN who send you the email.
