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ASICMiner BE300S Samples Arrived, <0.2W/G Achieved at Board Level

This morning Firedcat  released the fourth generation  chip samples test results on talk Forum:

"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

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 board picture:

203711fm9y7qaiqn0zbgan.jpg

Testing going on:

203725m1mxxzgp5oso61h1.jpg

From:https://bitcointalk.org/index.php?topic=888260.0
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