[ANN] Bitfury is looking for alpha-testers of first chips! FREE MONEY HERE!

[KNK]

Modified stats (uploaded to git) -

And easy 3GH per chip with 56 bits clock -

[loshia]

Modified stats (uploaded to git) -

And easy 3GH per chip with 56 bits clock -

Super:)

What about trying with 60-62 Bits Rev 1 was having an issues with OC higher that 56 if i remember...
Thank you for sharing your results

[TheRealSteve]

 Rev1 at 4.94GH/s (stock or OC'ed?) combined to 5.40GH/s (OC'ed) combined is only a 10% improvement - should be able to get more than that, or is the hash rate readout quite correct yet?

[KNK]

What about trying with 60-62 Bits Rev 1 was having an issues with OC higher that 56 if i remember...

Not yet, the code is unchanged from rev 1, so i have 56 as hard limit.

Rev1 at 4.94GH/s (stock or OC'ed?) combined to 5.40GH/s (OC'ed) combined is only a 10% improvement - should be able to get more than that, or is the hash rate readout quite correct yet?

The miner was just started, so the hashrate was not stable yet, but if you look at the 'expected' then they are calculated based on the cores count = 864/756 = ~14% increase expected.
All tests made at the same voltage and the chips are consuming almost the same current (rev 2 a bit lower ~3-4%).
3GH achieved at 0.62W/GH and 0.81V per chip, but a full string (@12V) requires a bit more current and will rise to 0.75W/GH
I have not pushed the chip yet to higher voltage and clocks

[vs3]

Out of curiosity - has anyone tried IOVDD over 1.8V? Would it survive 2.5-2.8V?

[KNK]

Out of curiosity - has anyone tried IOVDD over 1.8V? Would it survive 2.5-2.8V?

Yes, 2.5V for sure, but didn't dare to go higher.

[vs3]

Out of curiosity - has anyone tried IOVDD over 1.8V? Would it survive 2.5-2.8V?

Yes, 2.5V for sure, but didn't dare to go higher.

Oh, nice!
I just got an idea on how to chain the chips without having to use the CMQ/CMMINUS/CMPLUS pins ... let's see how many chips am I going to fry while testing

[LordTheron]

Hi Guys,


been testing my Yellow Jacket on Rev2 chips. 56 bits works really well and very stable, 0 HW errors. Im gonna do some more testing tonight.





This is what I get after it settles down after few hours.




Edit: Sorry for this big pictures, no idea how to upload them smaller.

[Gator-hex]

Technobit/Marto74 has a 16x board running at 61.65GH which is 3.85GH per chip. 406k accepted so ran long enough to be a reliable average.
That's a 37% improvement on the old chips but he is running it with 100mV(11%) more power this time.

https://bitcointalk.org/index.php?topic=307897.msg5640531#msg5640531

[pinkfloyd11]

Hello

chip samples are already stock out!!

When next stock arrive?

Thanks

[Bicknellski]

The WPC will be sending out our prototype design of our BF2 Wasp next week for fabrication.

The WPC has completed the Hive (BP-1. Rev 0.) which will house a modular of up to an 8 board array of 32 chips per BF2 Wasp.





Buck regulator region on the BF2 Wasp.

[sobe-it]

do you have to bake the samples or what am i reading on their site?

[Taugeran]

do you have to bake the samples or what am i reading on their site?

its best practice

[sobe-it]

Ok, building my first diyer and I don't wanna rune them. So say in a gas or electric oven for 24 hrs or what's best?

[Taugeran]

Ok, building my first diyer and I don't wanna rune them. So say in a gas or electric oven for 24 hrs or what's best?

Not sure what industry uses. I'd just use what ya got. Flux will clean any oxidation when soldered

[Tyger]

industry has rules about baking them, dephending on how long they are exposed to moisture (air).
Chips get a MSL level to indicate what they can handle, no idea what level these are, if they have one.
http://www.siliconfareast.com/msl.htm

there are better tables about this, including temperature.
but for diy i would not wurry to much about it.

[klondike_bar]

Ok, building my first diyer and I don't wanna rune them. So say in a gas or electric oven for 24 hrs or what's best?

Not sure what industry uses. I'd just use what ya got. Flux will clean any oxidation when soldered

I would use an electric over or small toaster over over a gas oven. better temperature control and no open flame (i might be wrong though, is a gas oven open flame?)

[sobe-it]

Yea but the flame is far away and I'd use a cookie sheet and alum foil... but i have toaster ovens as well. Just wanted to make sure before I ordered the chips. I don't have much money at all but interested in learning and testing. Maybe at some point figureout how to get a real pcb made so my project looks clean instead of a hackjob in perfboard. I'm not looking for resale... just a hobby off of the bitcoin hobby. Once you set up you miner and get it working 100% u just watch the pool and flashing lights.

[bitcminter]

Hi,

Could you help ?
I have an H-board v1.2 and rpi and M-board 2.3.
It's working but after my sd card is crashing. I make another from V1 img.
And now it's not working....

for example when i running the chainminer program:

pi@bitfury /opt/bitfury/chainminer $ sudo ./miner
INIT: 16 chips detected
^Cpi@bitfury /opt/bitfury/chainminer $

i make a new chainminer install and make, but same answer
i have no chip.conf and no best.cnf ... is it problem ?

[Taugeran]

Hi,

Could you help ?
I have an H-board v1.2 and rpi and M-board 2.3.
It's working but after my sd card is crashing. I make another from V1 img.
And now it's not working....

for example when i running the chainminer program:

pi@bitfury /opt/bitfury/chainminer $ sudo ./miner
INIT: 16 chips detected
^Cpi@bitfury /opt/bitfury/chainminer $

i make a new chainminer install and make, but same answer
i have no chip.conf and no best.cnf ... is it problem ?

Mboard 2.3 and newer can't use the v1 image due to the way the slots are connected and activated by chainminer

You might also tryout bfgminer

On the note of sdcard corruption. If you have a spare 8Gb+ flash drive laying around you can follow this guide
http://www.raspberrypi.org/forum/viewtopic.php?f=29&t=44177

Shows you how to move rootfs onto a USB drive that way the only time sdcard is touched is at boot. After that it's all from usb