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I'm shocked that they'd choose the 3M liquid (Novec 7000 Engineered Fluid, 1-methoxyheptafluoropropane). It is at least 100 times more expensive than using a light oil. And even that is far more expensive than if they reduced the physical packing density of the miners and air cooled them like in any conventional datacenter with ambient/evaporative cooling. So I'm surprised to see them claim that their reduce floor space (and saving on rent) is the more economical option. Especially since the entire 'mine' will be irrelevantly inefficient within 12 months and won't be worth the electricity bill. Good for them though, the rest of us can only dream of having that kind of capital.
They are in hong kong, and not mainland china. I think rent saving is a big issue there... Also with evaporative cooling you could get away with higher overclock levels. The company that built this sort off specializes in evaporative cooling... so they probably have some cozy relationship with 3M... Also i doubt if asicminer will mine with those chips forever... when their next gen chips are made... they will simply sell these old boards overpriced and replace the datacenter with the new ones.
The company that built this also did a similar thing with FPGA mining cluster in the past http://www.allied-control.com/immersion-1/technical-details
Oh that's one of those Cougar fans, I just bought 2 of them for my case since the stock ones died after 4 years of continuous use. They're really nice and quiet with the rubber mounts.
they really are. I am strongly considering replacing the other stock PWM fan with one. They look AWESOME and are very quiet, but unfortunately have lower airflow. (box says around 75CFM, while the stock fans must push over 100CFM).
BTW: anyone have good liquid cooling ideas or methods? It would be pretty sweet if the antminer boards could be placed into immersion cooling, but i know that they would require a radiator capable of >400W for each antminer which i imagine is costly and semi-complex to install
AFAIK liquid cooling (waterblocks) are not really ideal for ~200W (per blade) spread over a large area. The blocks would tend to be expensive. They are usually made for higher densities. For an ant you would likely need to get slabs custom built... then mount the blades onto it. I did see some early avalon threads where someone got custom waterblocks made... and used a chiller to cool the water.
Immersion cooling could work, just need to figure out how to keep the solution cool...
I think liquid cooling is waste of money... unless you can overclock it to the point of justifying your investment.
edit: found the thread https://bitcointalk.org/index.php?topic=211825.0
My current rig in the morning sun today 
That's 2x BFL 60 Gh/s and 2x BFL 7 Gh/s, all with new arctic cooling fans. I also have 30x usb erupters (not pictured), totalling 144 Gh/s now heating my room.
(previous post about this rig here: https://bitcointalk.org/index.php?topic=7216.msg2999470#msg2999470)
That's 2x BFL 60 Gh/s and 2x BFL 7 Gh/s, all with new arctic cooling fans. I also have 30x usb erupters (not pictured), totalling 144 Gh/s now heating my room.
(previous post about this rig here: https://bitcointalk.org/index.php?topic=7216.msg2999470#msg2999470)
Anyone walking pass, realizes that its mining gear, they will have it in a flash, even though they might have to make arrangements for a ladder
That's risky, i thought of the same thing.
I thought on where to get the ladder!!!
[WTB] Ladder
Oh that's one of those Cougar fans, I just bought 2 of them for my case since the stock ones died after 4 years of continuous use. They're really nice and quiet with the rubber mounts.
they really are. I am strongly considering replacing the other stock PWM fan with one. They look AWESOME and are very quiet, but unfortunately have lower airflow. (box says around 75CFM, while the stock fans must push over 100CFM).
BTW: anyone have good liquid cooling ideas or methods? It would be pretty sweet if the antminer boards could be placed into immersion cooling, but i know that they would require a radiator capable of >400W for each antminer which i imagine is costly and semi-complex to install
AFAIK liquid cooling (waterblocks) are not really ideal for ~200W (per blade) spread over a large area. The blocks would tend to be expensive. They are usually made for higher densities. For an ant you would likely need to get slabs custom built... then mount the blades onto it. I did see some early avalon threads where someone got custom waterblocks made... and used a chiller to cool the water.
Immersion cooling could work, just need to figure out how to keep the solution cool...
I think liquid cooling is waste of money... unless you can overclock it to the point of justifying your investment.
edit: found the thread https://bitcointalk.org/index.php?topic=211825.0
wow thats a massive aluminum heatsink lol. I was thinking along the lines of immersion cooling (single or dual phase, though single phase would obviously be cheaper and simpler to build and seal)
if it would work with the heatsinks removed, you could put 4 antminer blades (total 400GH in aircooling, ~900W) into a tank as small as [12"L x 6"W x 8"H] and have space for liquid to circulate. With the heatsinks, the width would be closer to 12".
I think heatsinks still needed for single phase.
The big problem still is how u gonna cool the liquid... You still have to deal with the same amount of heat to remove. Immersion is good for 2 things.
1) Have a buffer zone. If u generate heat in bursts, like typical computing, gaming, etc where you run it at max power for short times and not 24x7. You only have to deal with the average. - Not applicable here.
2) Channel heat elsewhere where you can exchange it more efficiently.
Congrats on the iron throne... House Bitfury.
The spider counseled it well. Stay out, watch House Avalon and BFL kill each other over the iron throne, then come and claim the seat.... well played sir.. respect.
Winter has come early for us House FPGA...
Got a couple of my Single SCs last week, and found my first block ever! 714M difficulty! I also have a new AC unit being shipped to me, 10,000 BTU because these are running pretty hot (it was 95 degrees F out this day). Next up, running 2 new 20 amp breakers for room for expansion once all my other equipment gets here! 
http://i.imgur.com/JZnG0xhh.jpg
http://i.imgur.com/amtsv5Vh.jpg
http://i.imgur.com/S9OK4wo.png
http://i.imgur.com/JZnG0xhh.jpg
http://i.imgur.com/amtsv5Vh.jpg
http://i.imgur.com/S9OK4wo.png
Whats that small black box connected to the ATX connector of the PSU? Just a switch or some kind of power distributor? Got a link?
Well, I feel underwhelmed as folks here are showing off ASICS... 
Anyway, Heres my rig:
4 x MSI R7950 Twin Frozr III cards
Seasonic 1000W Platinum PSU
ASROCK 970 Extreme4 ATX Motherboard
1 x PCI-e x1 to x1 powered riser
3 x PCI-e x16 to x16 unpowered risers
4GB DDR3 RAM
120GB 2.5 HDD
AMD AM3+ Temash single-core CPU
Tubular square steel open chassis
Plexiglas baseplate
Windows 7 x64 Professional
CGMiner, VNC & Afterburner
Mines BTC @ 2.1GH/s pulling 850-900 watts from the wall
Total cost: about $1800-$1850
One of these days, (probably after ROI) i'll swap the PSU out for a 1200W unit and add another card. I should have bought a 1200 from the start.
Anyway, Heres my rig:
4 x MSI R7950 Twin Frozr III cards
Seasonic 1000W Platinum PSU
ASROCK 970 Extreme4 ATX Motherboard
1 x PCI-e x1 to x1 powered riser
3 x PCI-e x16 to x16 unpowered risers
4GB DDR3 RAM
120GB 2.5 HDD
AMD AM3+ Temash single-core CPU
Tubular square steel open chassis
Plexiglas baseplate
Windows 7 x64 Professional
CGMiner, VNC & Afterburner
Mines BTC @ 2.1GH/s pulling 850-900 watts from the wall
Total cost: about $1800-$1850
One of these days, (probably after ROI) i'll swap the PSU out for a 1200W unit and add another card. I should have bought a 1200 from the start.
Woow ... Looks almost like a piece of art presented in a museum!
Very beautiful indeed!!
Al the best of luck
one4many
(future) Tour guide: This exhibit shows how pre-historic savage humans used to mine our money. Once upon a time Bitcoins were "mined" by these ancient devices. To put things in perspective, one single nanobot cell in your blood could have mined all the Bitcoins in existence.
Tourist: LOL WUT?
Apparently Bank of Thailand clarifies bitcoin exchange is legal in Thailand
Remember the fuss caused by one Thai exchange last year : https://bitcointalk.org/index.php?topic=264241.0
The same exchange now restarts trading. https://bitcoin.co.th/news/ (sorry cant find permanent link to individual posts).
I don't read Thai so cant know exactly whats in the letter....
The same exchange now restarts trading. https://bitcoin.co.th/news/ (sorry cant find permanent link to individual posts).
Quote
Bitcoin Trading Re-Opened
January 31, 2014
In a letter to Bitcoin Co. Ltd., Bank of Thailand has stated that, after further consideration, Bitcoin exchange operations do not fall under the scope of Ministry of Finance regulation, unless foreign currencies are also offered for exchange. Considering that Bitcoin Co. Ltd. only offers Bitcoin trades using Thai Baht and operates only within Thailand, we will restart our trading operations.
Over the next few weeks we will be re-checking our trading systems; which have been offline for the past months, and hope to be fully operational shortly.
Bank of Thailand letter: Download original scan (PDF)
January 31, 2014
In a letter to Bitcoin Co. Ltd., Bank of Thailand has stated that, after further consideration, Bitcoin exchange operations do not fall under the scope of Ministry of Finance regulation, unless foreign currencies are also offered for exchange. Considering that Bitcoin Co. Ltd. only offers Bitcoin trades using Thai Baht and operates only within Thailand, we will restart our trading operations.
Over the next few weeks we will be re-checking our trading systems; which have been offline for the past months, and hope to be fully operational shortly.
Bank of Thailand letter: Download original scan (PDF)
I don't read Thai so cant know exactly whats in the letter....
Re: MtGox blames Bitcoin protocol problem for BTC withdrawal issue
Does all that mean, the dream of 100% uncompromisable P2P transfer is over? Does it mean an additional check by a quasi central authority is needed to augment security? I would appreciate an answer in layman terms.
No
WTS 96 maxcoins for 5 BTC...
Thats roughly 0.35% of all maxcoins ever mined...
Thats roughly 0.35% of all maxcoins ever mined...
HAHAHHAHAH.. that's a funny one.
Well now its 0.3333% ... inflation in action
Re: SCRYP ASIC miner ready. BTC+LTC ASIC , combo.free sample providing.
you can download the guide, drivers, firmware here:
http://goo.gl/G27Vxr
or :
all guide file:
http://www.4shared.com/rar/Cc3eArxvce/PDF.html
drivers, firmware:
http://www.4shared.com/rar/Ob1rlXQrba/LIGHTNINGASIC_USB_Rig_Firmware.html
http://goo.gl/G27Vxr
or :
all guide file:
http://www.4shared.com/rar/Cc3eArxvce/PDF.html
drivers, firmware:
http://www.4shared.com/rar/Ob1rlXQrba/LIGHTNINGASIC_USB_Rig_Firmware.html
Where is the cgminer source?
Re: Cloud Hashing / Commodity Hashing - Why bother? Isn't hardware cheaper?
It is OK to purchase GH/s from CEX.io !!!
Why ?
For training
You will learn how real mining for Satoshi is without spending thousands of dollars and waiting on pre-orders.
You can have your GH/s instant and you can sell them back too. You can exchange your BTC and NMC right there.
You can exercise simple but essential operations like withdraw / add funds / TFA security etc.
In the end you will find the answer if mining / trading are really for you.
Why ?
For training
You will learn how real mining for Satoshi is without spending thousands of dollars and waiting on pre-orders.
You can have your GH/s instant and you can sell them back too. You can exchange your BTC and NMC right there.
You can exercise simple but essential operations like withdraw / add funds / TFA security etc.
In the end you will find the answer if mining / trading are really for you.
It is OK to purchase lottery tickets!!!
Why ?
For training
You will learn how statistical probability works without spending nights actually reading up on math.
You can have your ticket instant and you can sell them to your friends at premium if they have repeating digits.
You can exercise simple but essential operations like paying cashier/scratching card/driving to store/physical security(of ticket) etc.
In the end you will find the answer if continuing to play lottery is really for you.
when did you go there? why is the shop closed?
It wasn't me who went there, it was a friend.
The pics were taken about 10 - 30 minutes before January 10, 2014, 03:03:49 PM (op date)
Re: Cloud Hashing / Commodity Hashing - Why bother? Isn't hardware cheaper?
... because greed makes people retarded.
I disagree. It's not greed that makes people retarded. It's just that there are loads of greedy retarded people around. I consider myself greedy... but not retarded.. So i stay away from cex.io
You can't compare the price of ghs per ghs of Antminer S1 180 ghs machine to the price you pay to buy a single ghs unit. You got it all wrong. If you want to compare 1 ghs to antminer you have to compare it to the Antminer U1 1.6 ghs USB stick, not to a 180 ghs machine. CEX is not for people that want to buy 200 ghs, unless you are great at trading, it's for people that want to buy a few from them without the hassle of equipment, software, reselling a physical product that its almost worthless in 3 months retarded greedbags who can't do math and don't mind losing BTC in an epic scam, etc. etc. It is also for people to point their miners at ghash..
and if you are smart, you can actually mine for free at cex...the price has not moved much in 3 weeks...that is 3 weeks of free mining as in Zero cost.
and if you are smart, you can actually mine for free at cex...the price has not moved much in 3 weeks...that is 3 weeks of free mining as in Zero cost.
Fixed that for you.
lol, do you have any evidence that they are a scam? oh you are very smart you probably buy directly from BFL. Or maybe you did your wiz math and just bought one of these?
https://bitcointalk.org/index.php?topic=429513.0;all
You are going to get great ROI.LOL
Buying pre-ordered hardware is a speculation on when(or even if) they ship...
Buying GH/s is a speculation of number of math challenged ppl still around when u wanna sell...
^ This is assuming u are not hobyist.
Quote
The current number of attempts it takes to find the correct key is around 1,789,546,951.05
So my 180 GH/s antminer can find a 25 BTC block every 0.0099419275 seconds? or rather ~35 blocks an hour?
My pool has been very very unlucky all along... time to solo mine...
Re: [ANN] Introduction to DualMiner USB (could mine both BTC and LTC)
Can these (and other, similar, dual-use devices) mine both BTC and LTC simultaneously? Or is the user (or perhaps mining software) supposed to pick one at a time to mine?
Quote from first page and from the website:
Quote
Hash Rate: Dual Mode: 40KH/s LTC, 500MH/s BTC, or LTC Mode: 70KH/s LTC, BTC Off
Another poster posted the theoretical stats of the chip they're using:
Quote
BTC mode up to 2.25G/s BTC Hash Rate, with 2.4W/GHash
LTC mode up to 60K/s LTC Hash Rate
Due-Coin mode up to 1.75G/s BTC Hash Rate + 60K/s LTC Hash Rate, or up to 2.25G/s BTC Hash
Rate + 38K LTC Hash Rate
LTC mode up to 60K/s LTC Hash Rate
Due-Coin mode up to 1.75G/s BTC Hash Rate + 60K/s LTC Hash Rate, or up to 2.25G/s BTC Hash
Rate + 38K LTC Hash Rate
So two things jump out at me:
First, why is there such a difference between the theoretical stats and the quoted performance, particularly on BTC? And why is the BTC-only mode eliminated?
Second, what software would be able to use this gizmo to dual-mine simultaneously? On their site, they say "Customized Windows software with GUI" but they also mention Linux; and their screenshots are of a command-line miner. Depending on how the software is implemented, it may not be able to run on unusual hardware like a Raspberry Pi or Beaglebone. Custom-developed miners are sometimes less efficient than dedicated software like cgminer or bfgminer, so we could be giving up precious hashes. Definitely need more info on this front.
We developed a special version cgminer for dualminer. The customization is mainly because cgminer on github doesn't support dual mine mode. The latest version of cgminer even removed scrypt support, :-(. Also we are keeping a eye on bfgminer. We may release a bfgminer for dualminer. Currently only a customized cgminer is developed. As long as we start mass shipping, we will release cgminer that works on Linux. At that time, Beaglebone or PI can be used to control/manage dualminer usb.
If you need help with building/testing/troubleshooting with Linux or Pi lemme know...