It looks like the EU distributor has them in stock now for $336.
yes, for old mboard V1.0 to 2.3. |
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I suppose there is some chance that all remaining inventory went to the 100Th/s Mine. But my guess is that he and Punin are just zeroing-out their inventory for an upcoming price reduction.
I sure hope so. They have a good product, but the price isn't competitive any more. I sure hope they lower the price too. I have one rig of each version that I would like to fill up if the price is right... if they plan to continue to sell both versions. you wont see low price maybe in Dec. holiday season. |
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I think you better off get one psu if something short will fry Hboards with 2 psu and if one of them not shutdown keep going that bad burn.
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Ok,
Which one of you guys sucked up all the H-Cards? Couple of days ago they were aplenty. Out of stock now. Maybe Dave is just doing some adjusting. There were also a couple full kits available, pre-order now only. Guess we will see how it washes out.
All Hboards gone already for that price and btc gone up too. |
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Hi, Rich
Can you tell me when you are going to ship out my order?
Thank you
All done. Shipping on Monday. Thank you |
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Hi, Rich
Can you tell me when you are going to ship out my order?
Thank you
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Initial testing is pretty crazy - full rigs at 570G. Please get your case fans ready folks...you will have to add fans!
dont try to run without fan or you will get fry chip and add heatsink are +++++++. |
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Nice results, goxed. What voltage are your boards at (once they're heated)?
The boards with good chips are at 0.9V, the ones with >=2 bad chips are at 0.95V impressive. I cant get past 0.88v (39-41GH per board) without having chips or boards drop to 0 hashrate or produce massive3 error rates time to time are you using heatsinks? especially on the regulator and the lower half of the board? I have put up a reference picture in this thread. if you copy that you should get the board up to 0.9v provided there's good airflow. I have good heatsinks but perhaps could use slightly larger ones on the regulator/inductor. 0.865-0.87 is good for 40GH on my boards, but the pencil mod ramps up to maximum (or minimum?) resistance over a few days and its difficult to get the exact balance. once it climbs to >0.88v the boards become unstable and i see high error rates followed by entire boards or just some of the chips dropping to 0 every few hours and upkeep is a PITA. i'm sure if i had cold air moving through the heatsinks (rather then the 21 C room temperature) I could reach 0.9V though, or at least achieve a stable 0.88v If you have 40GH/s stable I think you are at the limit already. Kudos! you can do more than 40Gh/s with by disable few chips or disable dead chips for OC. |
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Nice results, goxed. What voltage are your boards at (once they're heated)?
The boards with good chips are at 0.9V, the ones with >=2 bad chips are at 0.95V OC to .95V overkilled and must have heatsink + fan. |
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What is that monstrosity you have on the inductor? Good gravy man, looks like a rhino ran it over.  He did put heatsink on inductor. |
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Why are you compiling chainminer? If all you're trying to do is change clock speeds, just edit /opt/bitfury/best.cnf and reboot. If that file doesn't exist yet, copy /run/shm/.stat.log to /opt/bitfury/best.cnf first.
1. How i copy /run/shm/.stat.log to /opt/bitfury/best.cnf ? 2. How i get /run/shm/.stat.log ? use cp /run/shm/.stat.log /opt/bitfury/best.cnf you can read more about cp command http://www.computerhope.com/unix/ucp.htm |
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everything was running smooth for a couple days, autotune was off, suddenly one h-board (October delivery) dies  Tried putting it in different slots, didn't help, nothing seems to look wrong with it. I've pulled it out now, should I put it back in and wait for self healing effect? I got 2 Hboards same as your hboard died with 30 minutes and board got very hot melt down solder around chips. I got 3 newer hboards but need AC cool down it or hboards will shut off every 10 minutes without AC on it and too later for other 2 died by overheat. pictures of chips http://picts.imgur.com/all/ |
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EDIT: I have heatsinks on back of all boards in regulator area, and 120 CFM fans!
Does the backside of the regulator even get hot? I have felt the top of the chip and its very hot but I don't feel much on the backside. Wouldn't putting a small heatsink on the chip do more? For the hashing chips those thermal vias work well as even touching the vias themselves gets hot, even better with a heatsink. Yes, it gets quite hot. I believe they are also constructed do dissipate the heat to the board, but I did not do any research in that matter. In my opinion the regulator heatsink is much more important than chip heatsinks. +1, the most important task before serious overvolting of the h-boards (0.8V+) is to first stick heatsinks on the back side of the board under the regulator. If possible, stick a heatsink on top of the regulator and the inductor. This way you can take them as high as 1V. The board will dissipate close to 70Watts at 1V. Can you recommend a source for suitable heatsinks? maybe you like this heatsink but some said it's too tall http://www.ebay.com/itm/100x140x12-7mm-Aluminum-Heatsink-for-Electronic-Computer-Electric-equipment-H157-/181110341808?ssPageName=ADME:L:OC:CA:3160i would beleive that you cant fill every slot on the board if using a heatsink taller than 8-10mm. i have some 35x35x6mm heatsinks on mine that easily allow airflow between every slot You can see someone sell 100x100x15mm for Hboard heatsink https://bitcointalk.org/index.php?topic=313594.0 |
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If V2 works on the US V1 Mboard?
Yes. Just let me know when you order. Otherwise, I only drill mounting holes for V2 m-boards. PM sent |
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If V2 works on the US V1 Mboard?
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EDIT: I have heatsinks on back of all boards in regulator area, and 120 CFM fans!
Does the backside of the regulator even get hot? I have felt the top of the chip and its very hot but I don't feel much on the backside. Wouldn't putting a small heatsink on the chip do more? For the hashing chips those thermal vias work well as even touching the vias themselves gets hot, even better with a heatsink. Yes, it gets quite hot. I believe they are also constructed do dissipate the heat to the board, but I did not do any research in that matter. In my opinion the regulator heatsink is much more important than chip heatsinks. +1, the most important task before serious overvolting of the h-boards (0.8V+) is to first stick heatsinks on the back side of the board under the regulator. If possible, stick a heatsink on top of the regulator and the inductor. This way you can take them as high as 1V. The board will dissipate close to 70Watts at 1V. Can you recommend a source for suitable heatsinks? maybe you like this heatsink but some said it's too tall http://www.ebay.com/itm/100x140x12-7mm-Aluminum-Heatsink-for-Electronic-Computer-Electric-equipment-H157-/181110341808?ssPageName=ADME:L:OC:CA:3160i would beleive that you cant fill every slot on the board if using a heatsink taller than 8-10mm. i have some 35x35x6mm heatsinks on mine that easily allow airflow between every slot no, that work fined for me and I think someone here said 15mm or less still work. |
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EDIT: I have heatsinks on back of all boards in regulator area, and 120 CFM fans!
Does the backside of the regulator even get hot? I have felt the top of the chip and its very hot but I don't feel much on the backside. Wouldn't putting a small heatsink on the chip do more? For the hashing chips those thermal vias work well as even touching the vias themselves gets hot, even better with a heatsink. Yes, it gets quite hot. I believe they are also constructed do dissipate the heat to the board, but I did not do any research in that matter. In my opinion the regulator heatsink is much more important than chip heatsinks. +1, the most important task before serious overvolting of the h-boards (0.8V+) is to first stick heatsinks on the back side of the board under the regulator. If possible, stick a heatsink on top of the regulator and the inductor. This way you can take them as high as 1V. The board will dissipate close to 70Watts at 1V. Can you recommend a source for suitable heatsinks? maybe you like this heatsink but some said it's too tall http://www.ebay.com/itm/100x140x12-7mm-Aluminum-Heatsink-for-Electronic-Computer-Electric-equipment-H157-/181110341808?ssPageName=ADME:L:OC:CA:3160 |
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I was on all day but some couldnt get on pool.
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