[ANN] Technobit HEX16B(Bitfury based) 16 chip board design - page 3.

Gator-hex

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Quote from: ZBC3 on March 04, 2014, 10:28:06 PM

Thanks Gator!

Do you suggest the single rail because it can handle more amps?

I suggest a single rail because it's less likely you'll have overload rail problems or blown rails. The single rail designs are rock solid except maybe a user can ask too much of the cables and melt them (don't ignore hot cables, spread the load to more cables or use thicker cables) Good PSUs have 18AWG wires, cheap ones may only use 16AWG, and are much easier to melt!

You usually get what you pay for with single rail, a Corsair 750W PSU will have a 62A/744W 12V rail, but that Warlock 900W PSU only has a 696W max on the 12V rail, and someone comes along thinking they can stick 900W on it and it blows up! Roll Eyes

ZBC3

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Thanks Gator!

Do you suggest the single rail because it can handle more amps?

Gator-hex

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Activity: 490

Merit: 500

Quote from: ZBC3 on March 04, 2014, 09:52:05 PM

Do you think either of these PSU's can run 3 bitfury boards and 1 coincraft 260 board?

XION AXP-1000K14XE 1000 Watt 80+ Bronze Module ATX
(6 + 12v rails)

Apevia ATX-WA900W Warlock 900-Watt Power Supply
(4 + 12v rails)

You need 36A/432W for Hex8A1-260 (I got one runs at 368W, and one runs at 408W, so they can vary in power requirements a lot!)
and 19A/228W for 3xHex16B (about 75W each)
= Total around 55A/660W

Apevia ATX-WA900W Warlock 900-Watt Power Supply = 4x 25A rails, 58A/696W max on 12V, maybe cutting it a bit close.

XION AXP-1000K14XE 1000 Watt 80+ Bronze Module ATX = 2x 20A and 4x 30A rails, 75A/900W max on 12V, this is the best of the two.

To avoid disappointment I would use a single 12V rail 62A/750W+ brand name PSU. (Corsair, EVGA, XFX, Seasonic, etc.)

Cheap unknown brands with many rails have a habit of blowing up!

ZBC3

sr. member

Activity: 361

Merit: 250

Do you think either of these PSU's can run 3 bitfury boards and 1 coincraft 260 board?

XION AXP-1000K14XE 1000 Watt 80+ Bronze Module ATX
(6 + 12v rails)

Apevia ATX-WA900W Warlock 900-Watt Power Supply
(4 + 12v rails)

ZBC3

sr. member

Activity: 361

Merit: 250

Martin,

I am complaining because you sent my order to quickly. The website says it can take 4 weeks to send the boards after receipt of chips. You sent my boards the day after receiving my chips.
My order will be completed in approximately 7 days.

Just kidding, thanks for getting my order to me much faster than expected!

Thank you, thank you, thank you!

блaгoдapя, блaгoдapя, блaгoдapя!

marto74

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Activity: 728

Merit: 500

3 boards hex16b will draw up to 3x75W

ZBC3

sr. member

Activity: 361

Merit: 250

What's the min PSU needed to run 3 boards?

My 3 bitburner fury's are running on a corsair 750, and I was thinking the technobit boards might have similar power requirements.

RoadStress

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Activity: 1904

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Quote from: Gator-hex on March 04, 2014, 08:19:33 AM

Quote from: Gator-hex on March 03, 2014, 08:30:29 PM

Quote from: RoadStress on March 03, 2014, 05:09:07 PM

Hey marto74 how long until we see some gen2 bitfury boards running?

I don't think a 25% improvement per chip is enough to make them competitive unless they cut their price so Marto can put 32 chip/110GH on a board or slash the 16 chip board price drastically. Really disappointed they are still at 55nm, could have put 40nm in the same package.

The 4x A1 130GH/s board looks the best right now (8x A1 has cooling requirements not suitable for home use!).

FriedCat is working on a 40nm chip that might be competitive. Was talking similar specs to A1 but at 40nm should make it much cheaper than 28nm.

I see they priced the BitFury 2 test chips at €5. 32x €5 = €160/$220 for about 110GH/s, expect double for other costs and Martos time, would make them about $4/GH per board.
http://www.bitfurystrikesback.com/product/bitfury-55nm-rev2-samples/

I was thinking the same thing. PCB and components do have a fixed cost that will influence the final cost per GH/s very much. Having a 2.5GH/s chip at ~0.7W/GH pushes the 3$/GH limit very much. Paying for more per GH/s is just throwing money on the window. Let's hope for a dump price for the chips!

Gator-hex

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Activity: 490

Merit: 500

Quote from: Gator-hex on March 03, 2014, 08:30:29 PM

Quote from: RoadStress on March 03, 2014, 05:09:07 PM

Hey marto74 how long until we see some gen2 bitfury boards running?

I don't think a 25% improvement per chip is enough to make them competitive unless they cut their price so Marto can put 32 chip/110GH on a board or slash the 16 chip board price drastically. Really disappointed they are still at 55nm, could have put 40nm in the same package.

The 4x A1 130GH/s board looks the best right now (8x A1 has cooling requirements not suitable for home use!).

FriedCat is working on a 40nm chip that might be competitive. Was talking similar specs to A1 but at 40nm should make it much cheaper than 28nm.

I see they priced the BitFury 2 test chips at €5. 32x €5 = €160/$220 for about 110GH/s, expect double for other costs and Martos time, would make them about $4/GH per board.
http://www.bitfurystrikesback.com/product/bitfury-55nm-rev2-samples/

Zich

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Quote from: GayEddie on March 04, 2014, 04:40:23 AM

Quote from: Zich on March 03, 2014, 09:47:14 PM

Quote from: GayEddie on March 03, 2014, 05:05:40 PM

e

Steve

Wrong setting. It's should be --hexminerc-voltage 1100 --hexminerc-options 16:1500

Check the asics, Gen2 is Avalon A3255-Q48.

I have been putting hexminerb 900 hexminerb 16:540 then hexminera 1500 hexminera 16 540 so your saying leave off second part and add --hexminerc-voltage 1100 --hexminerc-options 16:1500

Sorry Zich I am a bit off a noob
Steve

Did you own HEX16A too? If not then no need to add command --hexminera-voltage 1460 --hexminerc-options 16:480
Just use:

Code:

sudo nano ./cgminer --hexminerc-voltage 1100 --hexminerc-options 16:1500 --hexminerb-voltage 900 --hexminerb-options 16:540

Check my previous post https://bitcointalksearch.org/topic/m.5211950 Grin

GayEddie

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Quote from: Zich on March 03, 2014, 09:47:14 PM

Quote from: GayEddie on March 03, 2014, 05:05:40 PM

e

Steve

Wrong setting. It's should be --hexminerc-voltage 1100 --hexminerc-options 16:1500

Check the asics, Gen2 is Avalon A3255-Q48.

I have been putting hexminerb 900 hexminerb 16:540 then hexminera 1500 hexminera 16 540 so your saying leave off second part and add --hexminerc-voltage 1100 --hexminerc-options 16:1500

Sorry Zich I am a bit off a noob
Steve

Zich

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Activity: 1190

Merit: 1000

Quote from: GayEddie on March 04, 2014, 04:13:48 AM

Also it seems to have one blinking red light

Fast red blinking mean hashing

GayEddie

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Activity: 290

Merit: 100

Also it seems to have one blinking red light

Zich

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Activity: 1190

Merit: 1000

Quote from: GayEddie on March 03, 2014, 05:05:40 PM

hello all
I have 2 miners running off of a raspberry pi one is a hex16B which runs around 44 ghs

The other is suppose to be a Hex16A2 which should run at 24 ghs but I set up voltage to 1500 and options to 16:540 yet it seems to only manage around 7 ghs 1500/705mV not sure how to tell if this is a 16A or 16A2

Thanks for any help or advice

Steve

Wrong setting. It's should be --hexminerc-voltage 1100 --hexminerc-options 16:1500

Check the asics, Gen2 is Avalon A3255-Q48.

Gator-hex

hero member

Activity: 490

Merit: 500

Quote from: RoadStress on March 03, 2014, 05:09:07 PM

Hey marto74 how long until we see some gen2 bitfury boards running?

I don't think a 25% improvement per chip is enough to make them competitive unless they cut their price so Marto can put 32 chip/110GH on a board or slash the 16 chip board drastically. Really disappointed they are still at 55nm, could have put 40nm in the same package.

The 4x A1 130GH/s board looks the best right now (8x A1 has cooling requirements not suitable for home use!).

FriedCat is working on a 40nm chip that might be competitive. Was talking similar specs to A1 but at 40nm should make it much cheaper than 28nm.

RoadStress

legendary

Activity: 1904

Merit: 1007

Hey marto74 how long until we see some gen2 bitfury boards running?

GayEddie

full member

Activity: 290

Merit: 100

hello all
I have 2 miners running off of a raspberry pi one is a hex16B which runs around 44 ghs

The other is suppose to be a Hex16A2 which should run at 24 ghs but I set up voltage to 1500 and options to 16:540 yet it seems to only manage around 7 ghs 1500/705mV not sure how to tell if this is a 16A or 16A2

Thanks for any help or advice

Steve

Batshark

newbie

Activity: 33

Merit: 0

Marto,

I'm having an unknown issue with one of my technobit hex 16b. It is reporting a problem connecting as a usb device. I'm unsure of the cause, it just stopped working.

I'd like to try to fix it, but if I cannot, may I ship a non-working unit to you for repair?

Thanks!

Batshark

Edit: Got a response through technobit.eu, I'm going to ship 2 units, one unit does not work, the second is working, however there are burned out components on the bottom of the board.

Edit Edit: I'm only going to ship one unit, the one that is completely non-functional

Thanks for quick response by the way!

dspbuy

newbie

Activity: 11

Merit: 0

Quote from: marto74 on February 26, 2014, 02:31:02 AM

Quote from: dspbuy on February 25, 2014, 03:11:28 AM

...

Transaction ID # 6YJ26487L1064564J
bye

Confirmed.

Let me publicly acknowledge this: marto74 has given me my full refund.

Some advice to people doing business with TechnoBit/Marto: be patient. VERY patient. Don't be surprised if it takes weeks to get a reply. If all else fails, use this forum to communicate.
Some advice to Marto: DUDE! TALK TO YOUR CUSTOMERS! I can't stress this enough. Answer their emails and contact requests. People don't hate you, they just hate to be left in the dark, because they don't know what's going on. Just answer their emails and everything will be fine. I know you're mainly a tech guy, but communication with customers is EXTREMELY important. Hire some student to answer emails for 1 hour a day. That's all you need. You wouldn't be having any of these complaints if you just talk to them.

That is all. Thank you for keeping your word, even if it took so long.

marto74

hero member

Activity: 728

Merit: 500

Quote from: dspbuy on February 25, 2014, 03:11:28 AM

God dammit Marto, you said you will give me my refund last week! Where is it?

After I waited for 5 months (for nothing), is it now too hard for you to make a few clicks and send my money back? Are you TRYING to make your business look bad? I honestly don't understand you.
If this takes any longer I'll demand more due to interest rates. You are holding my money for 5 months now.

Transaction ID # 6YJ26487L1064564J
bye

Topic: [ANN] Technobit HEX16B(Bitfury based) 16 chip board design - page 3. (Read 56473 times)