Topic: ASICMiner BE300S Samples Arrived, <0.2W/G Achieved at Board Level - page 19. (Read 66440 times)

Any date estimates for miners with these chips?

Grats FC ! Nice specs !

Wow. Looking forward to testing these out first hand.

i am in

We will see if we can allocate some from the sample batch. The problem with MPW is that we only got
100 chips in hand and we need at least a large part of them for chip-wise variance testing.

beggars everywhere   i don't want a sample, i just want to see if they make specs.

Only one question. Samples?
You didn't provide any previously. That ended with two designs only, one foulty as hell. Maybe this time?

There are two reasons contributing to the current RMA problem of BE200-based chain design. The first is firmware problem, which we solved for Prisma 2.0 and are solving for Prisma 1.0 and 1.1. The second is that BE200's load constantly changes when switching task, introducing some big ripples in the whole chain and making the board unstable. It is also largely solved for Prisma 2.0, and is going to be totally eliminated by BE300 since its load never changes.

Also for chained design the output voltage of PSU, instead of software controlled DC/DC, determines your frequency and efficiency. For example, using a 12V-output PSU results in a higher frequency but higher W/G compared to a 11.5V-output PSU.

In that case, i wish you well with your tests and look forwards to seeing the results.

There are still several ifs for the chained board to achieve this result. Generally we are
positive towards it.

Anyway we will report more data whenever we have new.

so asic miner is promising a .3 watt miner at the wall socket.

if you could build one that works and does not burn up caps .  I will buy it.  but after my tube and then my prisma troubles I will wait for others to buy them first.

would be nice to have a .3 watt miner. an evga 1300 g2 could power a 3000gh unit easy.


Right now I can run 2444gh on an evga 1600g2  ..  I can do this by under volt of the sp20.  2 units will go to about 625 watts plus 625 watts = 1350 watts at the kwatt meter plug

So this is about the best a home miner can do today on 1x 120 volt  15 amp circuit.  need a 1500 watt psu to do it.


If you can do .3 watts a gh it may be possible to do a 4th machine  for 1200 watts .  that would be a nice improvement.. it would allow the evga 1300 to be used as that psu can do 1200 watts non-stop.

lets see if you do it.

that's a step up. well done FC.

if i'm adding up right - that chained board (filled with chips) should be ~135GH/s @ ~32w?
Network is going to go mental. I can't wait to see what the competition brings to the fore.

Looks very promising. Looking forward to seeing what hardware will be offered from these chips. Will follow this one closely. 

Awesome! They're finally in! 

We are glad to announce ASICMiner's 4th generation chip. From the physical testing data
of our verification sample, BE300S, the silicon results matches the simulation results faithfully,
and even outperforms our simulation in some cases. BE300S achieved the lowest energy
consumption per gigahash in existing market, getting the joule/gh ratio down below 0.2.

Furthermore, our string-based power solution eliminates almost all power losses and almost
all electric components on the board. Therefore on-wall power consumption would be very close
to (on-chip power/PSU efficiency), and the overall system cost is squeezed to its minimum.

Name: BE300S (Sample)

Technology: TSMC 28nm HPC

Package: FCLGA 5mm x 5mm

On chip efficiency (first board):
    3.0GH/s | 0.1872W/G
    4.8GH/s | 0.2275W/G
    5.2GH/s | 0.2469W/G

On board efficiency (average of 4 boards):
    2.8GH/s | 0.1961W/G
    3.2GH/s | 0.2026W/G
    3.6GH/s | 0.2095W/G
    4.0GH/s | 0.2145W/G
    4.8GH/s | 0.2204W/G
    5.2GH/s | 0.2257W/G
    5.6GH/s | 0.2314W/G
    6.4GH/s | 0.2363W/G
    6.8GH/s | 0.2439W/G
    7.2GH/s | 0.2495W/G

24 chip board efficiency:
    118.56GH/s | 0.26W/G
    155.04GH/s | 0.27W/G
    176.64GH/s | 0.31W/G
    273.60GH/s | 0.38W/G

With more accurate control on the variance between chips we could in principle gain less power consumption in advance.

We are still testing more voltage-frequency combinations, as well as more chips.
But the test results are stable and solid so far.

After the thorough testing of single chip boards, we are going to test boards with chained chips.

Single chip testing board picture:


Testing going on:


24 chips testing board picture:




More data and pictures are to be updated.