BITBURNER FURY Technical discussion - page 9.

RoadStress

legendary

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Quote from: shep80 on November 03, 2013, 12:48:43 PM

Quote from: RoadStress on November 03, 2013, 09:20:24 AM

I knew that raising the voltage makes your consumption go up exponentially, but this seems a lot. Have you measured your consumption at default speed/voltage? If i'm not mistaken it should be 256 with 900mV, but don't take my word on that.

Just did a quick test on my 4 boards:

256 Mhz, stock mV = ~160Gh/sec @ 235w (1.4w/Gh)

278 Mhz, 1380 mV = ~200Gh/sec @ 383w (1.9w/Gh)

Measured at the wall using a kil-o-watt. Power supply is Corsair AX860.

I know the firmware I am using is converting those clock and voltage numbers (as it thinks it is talking to an avalon board) but the overall Gh and power numbers are accurate.

Interesting! Thank you for the tests.

shep80

full member

Activity: 139

Merit: 100

Quote from: RoadStress on November 03, 2013, 09:20:24 AM

I knew that raising the voltage makes your consumption go up exponentially, but this seems a lot. Have you measured your consumption at default speed/voltage? If i'm not mistaken it should be 256 with 900mV, but don't take my word on that.

Just did a quick test on my 4 boards:

256 Mhz, stock mV = ~160Gh/sec @ 235w (1.4w/Gh)

278 Mhz, 1380 mV = ~200Gh/sec @ 383w (1.9w/Gh)

Measured at the wall using a kil-o-watt. Power supply is Corsair AX860.

I know the firmware I am using is converting those clock and voltage numbers (as it thinks it is talking to an avalon board) but the overall Gh and power numbers are accurate.

RoadStress

legendary

Activity: 1904

Merit: 1007

Quote from: shep80 on November 03, 2013, 08:49:03 AM

Quote from: RoadStress on November 03, 2013, 08:44:20 AM

what's your hashrate?

Right around 200G (50G per board) on the BBFs. They have been very stable, running off a raspberry pi.

Burnin has done a great job with all the hardware he has put together. Business dealings have been stressed but the actual hardware seems quite good.

I knew that raising the voltage makes your consumption go up exponentially, but this seems a lot. Have you measured your consumption at default speed/voltage? If i'm not mistaken it should be 256 with 900mV, but don't take my word on that.

shep80

full member

Activity: 139

Merit: 100

Quote from: jelin1984 on November 03, 2013, 08:59:05 AM

These is a lot of watt for 200 gh

Yes, it is a bit high but that is the max overclocking for the boards/chips so it is expected to be inefficient compared to more moderate overclock settings.

jelin1984

legendary

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These is a lot of watt for 200 gh

shep80

full member

Activity: 139

Merit: 100

Quote from: RoadStress on November 03, 2013, 08:44:20 AM

what's your hashrate?

Right around 200G (50G per board) on the BBFs. They have been very stable, running off a raspberry pi.

Burnin has done a great job with all the hardware he has put together. Business dealings have been stressed but the actual hardware seems quite good.

RoadStress

legendary

Activity: 1904

Merit: 1007

Quote from: shep80 on November 03, 2013, 08:38:21 AM

Quote from: f.baasch75 on November 03, 2013, 08:27:47 AM

I had to change my psu, because 2x20A 12V rails (400 watt) didn't work. It was fine with 1300mV setting, but quit working with 1350 mV.
A 450 watt psu with one 37A rail helped, no problems for more than 12 hours with hashing around 200GH/s.

I really would like to know how much power is needed for 4 boards.

I have 4 boards and they pull about 400 watts total at the wall.

what's your hashrate?

shep80

full member

Activity: 139

Merit: 100

Quote from: f.baasch75 on November 03, 2013, 08:27:47 AM

I had to change my psu, because 2x20A 12V rails (400 watt) didn't work. It was fine with 1300mV setting, but quit working with 1350 mV.
A 450 watt psu with one 37A rail helped, no problems for more than 12 hours with hashing around 200GH/s.

I really would like to know how much power is needed for 4 boards.

I have 4 boards and they pull about 400 watts total at the wall.

f.baasch75

member

Activity: 77

Merit: 10

I had to change my psu, because 2x20A 12V rails (400 watt) didn't work. It was fine with 1300mV setting, but quit working with 1350 mV.
A 450 watt psu with one 37A rail helped, no problems for more than 12 hours with hashing around 200GH/s.

I really would like to know how much power is needed for 4 boards.

cryptx

sr. member

Activity: 350

Merit: 250

Screenshot customer 4 boards:

cryptx

sr. member

Activity: 350

Merit: 250

Screenshot customer 1 board:

https://www.dropbox.com/s/2sehjkytbclyk0o/bbf-cgminer.jpg

cryptx

sr. member

Activity: 350

Merit: 250

This thread is all about the technical side of the Bitburner Fury boards.

The thread about the hardware sale can be found here:
https://bitcointalksearch.org/topic/bitburner-fury-in-stock-major-price-cut-sold-out-322129

Installation instructions about the Bitburner Fury can be found here:
https://www.asic-hardware.com/installation-instructions/

Characteristics of the board:

Hashrate 46 GH/s – 52 GH/s
16 Bitfury ASIC chips
4 Layer thermally enhanced PCB
External clock
PIC32 native USB-Controller
CAN-Bus inter-module communication (Only one USB connection for up to 8 modules)
Power connectors: 6 Pin VGA, barrel jack for wallwart, terminal block.
Power requirement: 50 up to 75 Watts
Onboard 60A adjustable core voltage power supply
Host software: Cgminer
Temperature controlled fan

Topic: BITBURNER FURY Technical discussion - page 9. (Read 18313 times)