Bitcoin Forum
December 06, 2016, 04:20:20 PM *
News: Latest stable version of Bitcoin Core: 0.13.1  [Torrent].
 
   Home   Help Search Donate Login Register  
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 51 »
  Print  
Author Topic: ZTEX USB-FPGA Modules 1.15x and 1.15y: 215 and 860 MH/s FPGA Boards  (Read 174127 times)
mrb
Legendary
*
Offline Offline

Activity: 1120


View Profile WWW
April 20, 2012, 07:18:46 AM
 #501

if you collect enough condensation points, you get to bonus round.

Won't happen.

Condensation happens when warm air meets a cold surface.
But in the fridge, air is cold and the FPGA is warm.
1481041220
Hero Member
*
Offline Offline

Posts: 1481041220

View Profile Personal Message (Offline)

Ignore
1481041220
Reply with quote  #2

1481041220
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
norulezapply
Sr. Member
****
Offline Offline

Activity: 475


View Profile
April 20, 2012, 11:22:45 AM
 #502

Anyone ordering some of the new quad boards in the UK? (PM me.)

If my post helped, I'll happily accept a few bitmills!   15rGg6A1JFZV3b7TTbtpAaiYGdUD1e1oAm
spiccioli
Legendary
*
Offline Offline

Activity: 1376

nec sine labore


View Profile
April 20, 2012, 12:28:45 PM
 #503

Anyone ordering some of the new quad boards in the UK? (PM me.)

What about creating a group order for us Europeans?

If we reach 50+ units price becomes interesting IMHO.

spiccioli
tnkflx
Sr. Member
****
Offline Offline

Activity: 346


View Profile
April 20, 2012, 12:58:31 PM
 #504

Anyone ordering some of the new quad boards in the UK? (PM me.)

I think Chefnet is already doing a group buy in .de. Check the German forum.

| Operating electrum.be & us.electrum.be |
spiccioli
Legendary
*
Offline Offline

Activity: 1376

nec sine labore


View Profile
April 20, 2012, 01:01:31 PM
 #505

Anyone ordering some of the new quad boards in the UK? (PM me.)

I think Chefnet is already doing a group buy in .de. Check the German forum.

It seems to me, I don't speak german, they're doing a group order of single-fpga cards.

I think we could make a pan-european Smiley group order for quad-fpga cards, written in english.

spiccioli
roomservice
Full Member
***
Offline Offline

Activity: 190



View Profile
April 20, 2012, 02:17:12 PM
 #506

20x 1.15x running very stable now. Thanks for that great product.

Here is my setup if anyone is interested:
http://i.imgur.com/ISSYe.jpg

"Tonight's the night. And it's going to happen again, and again. It has to happen. Nice night."
Hpman
Full Member
***
Offline Offline

Activity: 176



View Profile
April 20, 2012, 07:23:51 PM
 #507

Anyone ordering some of the new quad boards in the UK? (PM me.)

I think Chefnet is already doing a group buy in .de. Check the German forum.
It seems to me, I don't speak german, they're doing a group order of single-fpga cards.
They changed from singles to quads, with some exclusions. The count of ordered quads is ~35 at the moment. Maybe Chefnet will add a few English details to the thread on request.
rjk
Sr. Member
****
Offline Offline

Activity: 420


1ngldh


View Profile
April 20, 2012, 07:36:09 PM
 #508

It's about as clean as you can get without making your own custom USB cables.

Mining Rig Extraordinaire - the Trenton BPX6806 18-slot PCIe backplane [PICS] Dead project is dead, all hail the coming of the mighty ASIC!
testconpastas2
Full Member
***
Offline Offline

Activity: 199



View Profile
April 20, 2012, 08:41:57 PM
 #509

Interested in the EU Group, but i cant understand german , so i 'd rather an english group ( in this forum will be great....so no need of new registering issues)

.

Bitmessage: BM-2DAetLWJBKWHZoPbNCgg5z8jwaPpDYWwd4
gpg key id:C6EF5CE3
CA Coins
Donator
Sr. Member
*
Offline Offline

Activity: 306


View Profile
April 20, 2012, 09:52:06 PM
 #510

20x 1.15x running very stable now. Thanks for that great product.

Here is my setup if anyone is interested:
http://i.imgur.com/ISSYe.jpg

Those USB cables can be a pain when you have a large cluster.  Those standoffs are a nice touch.  How high are they?  Do you notice any speed/heat issues with the bottom boards?
Shadow383
Sr. Member
****
Offline Offline

Activity: 336


View Profile
April 21, 2012, 05:48:49 AM
 #511

if you collect enough condensation points, you get to bonus round.

Won't happen.

Condensation happens when warm air meets a cold surface.
But in the fridge, air is cold and the FPGA is warm.

So it'll only happen directly above the FPGAs?  Wink
vv01f
Sr. Member
****
Offline Offline

Activity: 314


View Profile
April 21, 2012, 08:30:57 AM
 #512

Interested in the EU Group, but i cant understand german , so i 'd rather an english group ( in this forum will be great....so no need of new registering issues)
If you write Chefnet in English he will understand you. So where is the problem? He's already at a good amount of units and this makes the price even better. If you need some post translated and google translator or other tools are not good enough, point e.g. me to it and I gonna tell you what it says.

donations to me please send via bitcoin 1vvo1FDwSAwNdLVA1mFkM7v76XPZAAUfb
a good European exchange: bitcoin.de (ref-link)
mrb
Legendary
*
Offline Offline

Activity: 1120


View Profile WWW
April 21, 2012, 08:45:47 AM
 #513

if you collect enough condensation points, you get to bonus round.

Won't happen.

Condensation happens when warm air meets a cold surface.
But in the fridge, air is cold and the FPGA is warm.

So it'll only happen directly above the FPGAs?  Wink

No.

Think...
randomguy7
Hero Member
*****
Offline Offline

Activity: 528


View Profile
April 21, 2012, 03:57:29 PM
 #514

20x 1.15x running very stable now. Thanks for that great product.

Here is my setup if anyone is interested:
http://i.imgur.com/ISSYe.jpg

This is so beautiful Smiley. Can you tell me where you got this spacer thingies you used to stack the singles?
BR0KK
Hero Member
*****
Offline Offline

Activity: 742



View Profile
April 21, 2012, 05:11:42 PM
 #515

U can get them in every good hardware supplier. I got mine from a local store in Freiburg.

Awwww I want to have 15 more of these units. I only could afford 5 ATM Smiley


TheSeven
Hero Member
*****
Offline Offline

Activity: 504


FPGA Mining LLC


View Profile WWW
April 21, 2012, 08:59:28 PM
 #516

Regardless of opinion on practical application of thermal dynamics, all the thinking available will not make it any smarter to place expensive electronics into a refrigerator and I would be rather certain in that doing that would instantly void any kind of warranty request for when, not if, the board stops working from whatever the next hair brained idea comes along. Seeing that picture was like seeing someone kick a puppy. That poor FPGA needs a good home. Please, stop the abuse.

Actually I don't see anything dangerous here. Condensation could possibly bite you when removing it from the fridge, but only if it wasn't mining immediately before it gets removed from it. Condensation isn't likely to happen at all here.

I consider it a valid approach at evaluating the thermal behavior of that board.

My tip jar: 13kwqR7B4WcSAJCYJH1eXQcxG5vVUwKAqY
aTg
Legendary
*
Offline Offline

Activity: 1302



View Profile
April 22, 2012, 10:29:51 AM
 #517

My God how many stupid things you read in this forum, the board just spent 20 minutes in the fridge for a test. Neither the food has been contaminated, nor was there any kind of condensation, because as someone said condensation can not be created on a hot surface.
It was just a test by someone on the forum if it seemed a good idea to put your FPGAs in a gas cooling system is very cheap as a refrigerator.
But from now on I will keep these tests for myself so I will not have to put up with absurd criticism.
Turbor
Legendary
*
Offline Offline

Activity: 1008


BitMinter


View Profile WWW
April 22, 2012, 12:11:19 PM
 #518

Chill out Cheesy I had to laugh when I read about the test. I like to hear what others do to improve performance.

ursa
Member
**
Offline Offline

Activity: 72


View Profile
April 22, 2012, 12:15:52 PM
 #519

aTg,
You're so right!
Keep the ideas for the people capable of understanding them...
gyverlb
Hero Member
*****
Offline Offline

Activity: 896



View Profile
April 22, 2012, 01:48:25 PM
 #520

Condensation may not be a problem. I wouldn't be sure until a test is done (20 minutes isn't enough) because air is warmed locally by the board and could eventually reach a cold surface just above the board were condensation would slowly build up if it hasn't time to cool down before. Seems unlikely to happen but I'll check such a setup regularly and wouldn't change what I place above the boards in the fridge without additional checks...

But that's the least of your problems. The compressor of a refrigerator isn't designed to work continuously and will break if it is forced to do so. I learned this painfully when the switch which should have cut the light in the refrigerator stopped working. After several weeks/months (I'm not sure when the switch failed exactly), the refrigerator was dead.

The light bulb in the refrigerator was only ~20W...

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
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 51 »
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!