Bitcoin Forum
March 19, 2024, 06:19:12 AM *
News: Latest Bitcoin Core release: 26.0 [Torrent]
 
   Home   Help Search Login Register More  
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 [27] 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 »
  Print  
Author Topic: ZTEX USB-FPGA Modules 1.15x and 1.15y: 215 and 860 MH/s FPGA Boards  (Read 182325 times)
MXRider
Sr. Member
****
Offline Offline

Activity: 466
Merit: 250



View Profile
April 24, 2012, 03:36:37 PM
 #521

Comments needed about my possible cooling system.

I install aftermarket Northbridge heat sinks to 1.15y FPGAs. As far as I understand, every Northbridge heat sink fits there or are there some differences with the mounting holes? How much pressure can the FPGA take? Can I use a heat sink that weighs 150g?

I use 1850rpm Gentle Typhoon fans to blow cold air to the heat sinks. FPGAs are placed in line inside of wooden tunnel so the air flows through the heat sinks.

Pros? Cons?
1710829152
Hero Member
*
Offline Offline

Posts: 1710829152

View Profile Personal Message (Offline)

Ignore
1710829152
Reply with quote  #2

1710829152
Report to moderator
1710829152
Hero Member
*
Offline Offline

Posts: 1710829152

View Profile Personal Message (Offline)

Ignore
1710829152
Reply with quote  #2

1710829152
Report to moderator
Even if you use Bitcoin through Tor, the way transactions are handled by the network makes anonymity difficult to achieve. Do not expect your transactions to be anonymous unless you really know what you're doing.
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction.
1710829152
Hero Member
*
Offline Offline

Posts: 1710829152

View Profile Personal Message (Offline)

Ignore
1710829152
Reply with quote  #2

1710829152
Report to moderator
1710829152
Hero Member
*
Offline Offline

Posts: 1710829152

View Profile Personal Message (Offline)

Ignore
1710829152
Reply with quote  #2

1710829152
Report to moderator
1710829152
Hero Member
*
Offline Offline

Posts: 1710829152

View Profile Personal Message (Offline)

Ignore
1710829152
Reply with quote  #2

1710829152
Report to moderator
BR0KK
Hero Member
*****
Offline Offline

Activity: 784
Merit: 500



View Profile
April 24, 2012, 04:13:41 PM
 #522

Why switching to new fans? I did ist because I wanted to save some height.
Im switching back to the included heatssinks and use them passive.

MXRider
Sr. Member
****
Offline Offline

Activity: 466
Merit: 250



View Profile
April 24, 2012, 04:29:25 PM
 #523

I'm not going to change the fans. I won't even use the 40mm fans. I'm just applying new heat sinks and using 120mm fan for 4 or 5 FPGAs. I can sketch a picture if that helps.
tgmarks
Donator
Hero Member
*
Offline Offline

Activity: 490
Merit: 500


View Profile
April 24, 2012, 04:45:13 PM
 #524

I didn't even notice the 1.15y came out.  Gotta start subscribing to this.

BR0KK
Hero Member
*****
Offline Offline

Activity: 784
Merit: 500



View Profile
April 24, 2012, 05:45:39 PM
 #525

I'll take the the fan of the coolers off and use the sink as passive Smiley
My setup will be built into a IKEA Helmer
locker.


Turbor
Legendary
*
Offline Offline

Activity: 1022
Merit: 1000


BitMinter


View Profile WWW
April 24, 2012, 05:58:39 PM
 #526

No, just mine. And I can only do that because I have access to a manufacturing facility and components (and I am very motivated to build my own mining cluster).

I hate you so much Wink Cheesy The hash rates are very impressive. It looks like i lost a bit of speed by changing my fans. Great product.

antirack
Hero Member
*****
Offline Offline

Activity: 489
Merit: 500

Immersionist


View Profile
April 24, 2012, 09:38:05 PM
Last edit: April 24, 2012, 09:50:42 PM by antirack
 #527

Antirack: The 10port USB hubs your using in your photo (the blue one). Have you had any problems with them at all from a reliability standpoint?

So far no problem. But they are cheap and low quality, I'd keep a few spares handy. They cost very little retail here in Hong Kong (I've seen them for $1.5 from a company in China). They do have a good form factor for a cluster in my opinion.

However, I have once or twice, when I touched the USB port on a running board (not the USB hub), had communication issues with that board. I am not sure if that's because of the hub or my electrical wiring (current flow) or just because of my prototypes. I am going to test this with an alternative USB hub now that you mention it.

Did you have any problems or just asking because you are looking for hubs?
BR0KK
Hero Member
*****
Offline Offline

Activity: 784
Merit: 500



View Profile
April 24, 2012, 10:47:59 PM
 #528

Quote
However, I have once or twice, when I touched the USB port on a running board (not the USB hub), had communication issues with that board. I am not sure if that's because of the hub or my electrical wiring (current flow) or just because of my prototypes. I am going to test this with an alternative USB hub now that you mention it.

Have these com errors to on a 7 port hub from trust (cheap brand) once in a while. But most times all 5 work flawless with it:)
(it could be the hub, my cables, my mac mini witch has a known problem with usb devices or some random event i cause while touching the stuff on my desk?)

gyverlb
Hero Member
*****
Offline Offline

Activity: 896
Merit: 1000



View Profile
April 24, 2012, 11:03:02 PM
 #529

  • If I understand correctly from the original post the price goes down with volume cross-customers. Is there a page with the current applicable price or recent orders by date so that we can know at which price we will be buying ?
Re-reading the original post, I think I didn't understand correctly, it seems that the rebate apply customer by customer. Damn the 25-49 range unit price was looking good, but I probably won't purchase more than 10 in the foreseeable future :-(

P2pool tuning guide
Trade BTC for €/$ at bitcoin.de (referral), it's cheaper and faster (acts as escrow and lets the buyers do bank transfers).
Tip: 17bdPfKXXvr7zETKRkPG14dEjfgBt5k2dd
-ck
Legendary
*
Offline Offline

Activity: 4046
Merit: 1622


Ruu \o/


View Profile WWW
April 25, 2012, 06:45:21 AM
 #530

First cgminer release (2.3.4) with limited ztex support for 1.15x is out.

Developer/maintainer for cgminer, ckpool/ckproxy, and the -ck kernel
2% Fee Solo mining at solo.ckpool.org
-ck
ztex (OP)
Donator
Sr. Member
*
Offline Offline

Activity: 367
Merit: 250

ZTEX FPGA Boards


View Profile WWW
April 25, 2012, 04:38:35 PM
 #531

  • If I understand correctly from the original post the price goes down with volume cross-customers. Is there a page with the current applicable price or recent orders by date so that we can know at which price we will be buying ?

The volume discount is per customer.

Quote
  • Which miners do support the 1.15y today and which others are working on its support ?

BTCMiner: http://www.ztex.de/btcminer

gyverlb
Hero Member
*****
Offline Offline

Activity: 896
Merit: 1000



View Profile
April 25, 2012, 05:31:44 PM
 #532

  • If I understand correctly from the original post the price goes down with volume cross-customers. Is there a page with the current applicable price or recent orders by date so that we can know at which price we will be buying ?

The volume discount is per customer.

Quote
  • Which miners do support the 1.15y today and which others are working on its support ?

BTCMiner: http://www.ztex.de/btcminer
Thanks for the reply, I've PM'ed Chefnet for a quad already.

P2pool tuning guide
Trade BTC for €/$ at bitcoin.de (referral), it's cheaper and faster (acts as escrow and lets the buyers do bank transfers).
Tip: 17bdPfKXXvr7zETKRkPG14dEjfgBt5k2dd
pazor
Legendary
*
Offline Offline

Activity: 966
Merit: 1000



View Profile
April 25, 2012, 07:10:51 PM
 #533

hallo,

bin bald besitzer eines sigle boards von ztex (1.15x)

jetzt habe ich mir folgende veränderungen überlegt.

tausch des kühler durch folgendes modell:
http://www.amazon.de/EKL-Alpenf%C3%B6hn-Chipsatz-K%C3%BChler-Kupfer/dp/B00169FM8E/ref=sr_1_2?ie=UTF8&qid=1335380596&sr=8-2

ist ein northbridge kühler aus kupfer

ziel ist es das board ohne lüfter zu betreiben.

sollte allerdings sich herausstellen, dass ein lüfter notwendig ist, würde ich einen langsam drehenden 12cm lüfter einsetzen.
was mich allerdings auf folgende überlegung bringt.

sollte das tachosignal des lüfters irgendwie ausgewertet werden, und die werte sich auf den 4x4 lüfter beziehen, dann könnte es sein, dass die niedrigeren werte des langsam drehenden lüfters zu problemen führen, oder ?

lese gern eure meinungen hierzu bzw. ztex wissen hierzu...

treuhand-Dienst gewünscht? - frag per PM an
BTC 174X17nR7vEQBQo4GXKRGMGaTmB49Gf1yT
bitscoins
Sr. Member
****
Offline Offline

Activity: 392
Merit: 250



View Profile
April 25, 2012, 07:18:41 PM
 #534

How many decibel standard fan on ztex, and how many fan of probabilly 120mm?
TheSeven
Hero Member
*****
Offline Offline

Activity: 504
Merit: 500


FPGA Mining LLC


View Profile WWW
April 25, 2012, 07:23:52 PM
 #535

This board cannot be powered via USB.

My tip jar: 13kwqR7B4WcSAJCYJH1eXQcxG5vVUwKAqY
pazor
Legendary
*
Offline Offline

Activity: 966
Merit: 1000



View Profile
April 25, 2012, 07:26:42 PM
 #536

ztex (JET Xilence Northbridge Cooler) -> 17 - 19 db(A) @ 4500rpm

BeQuiet SilentWings 2 -> 15,7 dBA @ 1500rpm

treuhand-Dienst gewünscht? - frag per PM an
BTC 174X17nR7vEQBQo4GXKRGMGaTmB49Gf1yT
Turbor
Legendary
*
Offline Offline

Activity: 1022
Merit: 1000


BitMinter


View Profile WWW
April 25, 2012, 08:01:11 PM
 #537

hallo,

bin bald besitzer eines sigle boards von ztex (1.15x)

jetzt habe ich mir folgende veränderungen überlegt.

tausch des kühler durch folgendes modell:
http://www.amazon.de/EKL-Alpenf%C3%B6hn-Chipsatz-K%C3%BChler-Kupfer/dp/B00169FM8E/ref=sr_1_2?ie=UTF8&qid=1335380596&sr=8-2

ist ein northbridge kühler aus kupfer

ziel ist es das board ohne lüfter zu betreiben.

sollte allerdings sich herausstellen, dass ein lüfter notwendig ist, würde ich einen langsam drehenden 12cm lüfter einsetzen.
was mich allerdings auf folgende überlegung bringt.

sollte das tachosignal des lüfters irgendwie ausgewertet werden, und die werte sich auf den 4x4 lüfter beziehen, dann könnte es sein, dass die niedrigeren werte des langsam drehenden lüfters zu problemen führen, oder ?

lese gern eure meinungen hierzu bzw. ztex wissen hierzu...

I would not use the board without a fan. You lose hashrate and generate much heat for nothing. The heatsink looks good. Take a 92mm silent wing (i'm a be quiet fanboi Cool) and blow the heatsink. 120mm is overkill for one board alone. Not sure how much power you can draw from the fan connector. But it should be no problem to solder or crimp the fan cables to the 12V line of the power supply. There is no RPM signal as far as i know. The fans run 100% all the time.

bitscoins
Sr. Member
****
Offline Offline

Activity: 392
Merit: 250



View Profile
April 25, 2012, 08:47:26 PM
 #538

ztex (JET Xilence Northbridge Cooler) -> 17 - 19 db(A) @ 4500rpm

BeQuiet SilentWings 2 -> 15,7 dBA @ 1500rpm

The difference is very low...
17-19 Db acceptable...
Power consumption?
BR0KK
Hero Member
*****
Offline Offline

Activity: 784
Merit: 500



View Profile
April 25, 2012, 09:17:24 PM
 #539

I'll post when my Board arrives Smiley

pazor
Legendary
*
Offline Offline

Activity: 966
Merit: 1000



View Profile
April 25, 2012, 09:21:26 PM
 #540

jet xilince -> 0.72 W

silent wing 2 -> 2,4 W

treuhand-Dienst gewünscht? - frag per PM an
BTC 174X17nR7vEQBQo4GXKRGMGaTmB49Gf1yT
Pages: « 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 [27] 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 »
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!