Brilliant underclock data and presentation. 
+1 thanks 2GOOD
0.72 w/gh is pretty good but still a bit disappointing that it's not 0.5 w/gh at the wall like BA claims. (not surprisingly)
Topic: Technobit HEX4M - 400GH BlackArrow based miner reviewed - page 3. (Read 14656 times)
+1 thanks 2GOOD
0.72 w/gh is pretty good but still a bit disappointing that it's not 0.5 w/gh at the wall like BA claims. (not surprisingly)
Brilliant underclock data and presentation.
Awesome!!! Added to the Mining hardware comparison sheet.
https://docs.google.com/spreadsheets/d/1Gtj8ts3zEUZPwSBZQnYZwi__zGfg-0SKVIdH_17GqYw/
https://docs.google.com/spreadsheets/d/1Gtj8ts3zEUZPwSBZQnYZwi__zGfg-0SKVIdH_17GqYw/
Some Undervolt tests
Awesome, most interesting graph yet 2GOOD. 760/740 @ 303G looks like an interesting sweet spot in uses where power draw is a major consideration. It is a shame to waste the potential GH's, but considering I've got a couple of these coming I think I'll use this as a starting point. 
Nice review.
Have you tested it undervolted to 0.6V?
Wondering if it can go anywhere near 0.5w/gh at the wall like BA claims.
Have you tested it undervolted to 0.6V?
Wondering if it can go anywhere near 0.5w/gh at the wall like BA claims.
Thank You
I tried 700Mhz at 0.70v it was hashing with ~260GH and some HW errors, but can't recall the consumption, if you give some settings I'll be glad to test the undervolt capabilities.
Not sure what the clock freq should be at 0.6v. Maybe try ~500MHz?
Some Undervolt tests
Cons:
- No thermal sensor
@Marto wrote that the temp sensor hardware is in place but it needs extra firmware code to get the temps out (to cg-miner I presume?)
Out of my 48 coolers, some of the bases look a little suspect and will probably need lapping a little, knowing the die temp would be super handy for thermal debug.
Great review
@2GOOD, thanks for posting this great review!
Would it be possible to run 25 hex4m boards from a single netbook/laptop/pc, of course with the necessary usb hubs?
I think it should work, maybe 6 host USBs each with one 4 port hub = 24 devices, I'm not sure about nested hubs.
....
Would you be able to take a detail macro shot of the voltage regulators. I'm curious what Marto has used since it looks like some Infineon FETs. Just wanted to check it out
So pics if you can or chip package number if you can't?
I'll try to take one later.
Hello,
Can someone please tell me what is exact wattage at the wall (in Europe) using branded PSU, without any overclocking, at stock speed (as advertised)? And what is exact hashrate of the device (average) on panel and on mining pool?
I would like to add this device to my small chart, showing efficiency of various ASIC miners. Thank you!
Can someone please tell me what is exact wattage at the wall (in Europe) using branded PSU, without any overclocking, at stock speed (as advertised)? And what is exact hashrate of the device (average) on panel and on mining pool?
I would like to add this device to my small chart, showing efficiency of various ASIC miners. Thank you!
All the info you need is in the OP.
TL;DR
400 GH/s
470W @wall
423W device consumption
FSP Aurum S 600W Gold PSU 90%
Hello,
Can someone please tell me what is exact wattage at the wall (in Europe) using branded PSU, without any overclocking, at stock speed (as advertised)? And what is exact hashrate of the device (average) on panel and on mining pool?
I would like to add this device to my small chart, showing efficiency of various ASIC miners. Thank you!
Can someone please tell me what is exact wattage at the wall (in Europe) using branded PSU, without any overclocking, at stock speed (as advertised)? And what is exact hashrate of the device (average) on panel and on mining pool?
I would like to add this device to my small chart, showing efficiency of various ASIC miners. Thank you!
....
Would you be able to take a detail macro shot of the voltage regulators. I'm curious what Marto has used since it looks like some Infineon FETs. Just wanted to check it out
So pics if you can or chip package number if you can't?
Cheers for this chap now have a much clearer picture of what I'm getting soon.
Would it be possible to run 25 hex4m boards from a single netbook/laptop/pc, of course with the necessary usb hubs?
Great review as always
Will the new boards have 2 or 3 power connectors?
Great review as always
Will the new boards have 2 or 3 power connectors?
Thanks for the interesting review 2Good. Your original review of the Hex16A2 was one of the things that convinced me to give it a try last year, and I'm glad to say that thanks to marto and bobsag's efforts to help out after the BlackCrap Arrow failure, I'm now eagerly awaiting delivery of my Hex4M boards. Nice to have a bit of background insight before they land.
Great review as always
Excellent review as always
But please do not recommend to use Pi at all. The main issue with Pi is that Ethernet is hooked up to USB internal switch. In other words Ethernet is sharing same interrupt with USB by hardware design. Which is a big disaster for heavy USB I/O.
The minor issue is that after a couple power offs / ons Pi etas SD card. You need to reinstall whole thing
It is personal opinion of course
Big folks are using beaglebone....
Nice review.
Have you tested it undervolted to 0.6V?
Wondering if it can go anywhere near 0.5w/gh at the wall like BA claims.
Have you tested it undervolted to 0.6V?
Wondering if it can go anywhere near 0.5w/gh at the wall like BA claims.
Thank You
I tried 700Mhz at 0.70v it was hashing with ~260GH and some HW errors, but can't recall the consumption, if you give some settings I'll be glad to test the undervolt capabilities.
Not sure what the clock freq should be at 0.6v. Maybe try ~500MHz?
Great review 
, bottom heatsink is a nice surprise
, bottom heatsink is a nice surprise Jump to: