There has not been an increase in withdrawal requests.
Requests wasn't the right word. I meant general workload, dealing with it. But it's interesting that you address the point, anyway. |
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your down?
So like, you only come hopping back on summer vacation, or what? No, he's doing a 111% PPS pool - getting his ducks in a row. There aren't many prop pools left, eh marty?  He was doing the same several months ago, and then suddenly disappeared. |
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your down?
So like, you only come hopping back on summer vacation, or what? |
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how about 60?
Lol what, are you a fool or something? He just declined a HIGHER offer. What makes you think he will accept your LOWER offer? Sometimes I wonder about people. |
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I've had a withdrawal request in with Intersango now for 7 days and I was wondering if anyone had anything out of them in the last week or so. Had some previous withdrawals with them fine to a UK bank account but this last one seems to be taking a long time, they have previously been pretty swift with the withdrawal requests... Raised a support request with them too and no response from them yet?
So I thought I'd see if anyone else who uses them has had this issue in the last week...
Probably flooded with requests following the Bitcoinica debacle. |
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Considering BFL has already created a waterblock they should start selling those on their site as well. Then we can wait 4 weeks for 2 different items.........I kid I kid!  Their design uses screw mounts that are not available on current-gen boards. The newer-gen boards have a tweaked layout to accommodate the block, so I wonder if it would still be possible to make a block for the current-gen singles. |
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All I'm saying is that you shouldn't compare them. All "the other FPGA manufacturers" are using plastic chips.
I was wondering about that. Isn't the BFL single a plastic chip with a metal plate on top? Because if so, then why use the metal plate at all? Wouldn't it be better to put the heatsink directly on the chips? (Just wondering here, not taking sides) No, the chip packaging is similar to a CPU, where it is very close to or in contact with the die. The die itself is smaller then the area covered by the heat spreader. |
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I've got 200 BTC that I want to turn into Dwollas. Prefer all one big transaction. Let me know, and reasonably well known users only please, no noobs. -otc available under nick "rjk".
Bumping for this. Need Dwolla, have BTC or mtgoxusd. ORDER FILLED |
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Contact Atlas. He works at Wal-mart. |
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If you've done any recent research, most of the "mirror finish" stuff has been debunked, seriously.
link? every chip/heatsink i've ever owned has benefited from lapping. is a "mirror finish" necessary? no. Is it better to have an 800 grit finish than a 120? yes. (not saying it's a 120 grit finish before you micro-analyse. i don't have the chip on hand so i can't tell you what the finish is) Quite so. I was referring specifically only to the mirror finish, not lapping. Umm.. they get plenty of "throttling", if they turn the speed up to insane levels. Technically it is just increased error rates, which indicates a need to reduce the speed to compensate.
what constitutes insane levels? I don't know of any other companies using that chip, so i can't say how aggressive their clocks are. I also mentioned its quite possible BFL has a highly optimized bitstream that's putting a lot of thermal pressure on the chip. What i'm saying is their thermal dissipation design is not adequate/optimized and it's causing issues. thermal paste is designed to increase the surface area contact of chip/heatsink. you want to use the smallest amount possible because metal to metal is a better conductor than metal to tim to metal. logically, if nothing else, the smoother/flatter the surface, the less tim required, the better the cooling. Flatter, yes, but smoother is debatable because if it is too smooth, the thermal paste might not be able to fill the remaining imperfections, since they are smaller than the paste particle size. Perhaps you should have a go at the polishing experiment (or whatever else you can think up), and let us know how it works? I am always interested to know the results of real world tests. Before calling it a "mistake", prove that it is wrong.
a single-specific experiment? sure, send me one and i'll have a go at it  as far as experiments with lapping vs non lapped. google "does lapping increase performance" the general consensus is yes, if the chip isn't flat/has a rough surface, or the heatsink isn't flat/rough surface. The consensus that I found was that polishing wasn't nearly as important as having a perfectly flat surface. Not only that, but BFL is the only one using a chip that has metal packaging, all the rest are plastic, so comparisons between them don't make a whole lot of sense..
metal packaging is a better conductor than plastic. not following there. All I'm saying is that you shouldn't compare them. All "the other FPGA manufacturers" are using plastic chips. |
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I'm pretty sure this is a long shot, but I figured I'd post anyway, to see if anyone was interested. Imgur album here: http://imgur.com/a/RL5xISelling two separate units asking $300 each. These are new in box, actually on a pallet. This includes the rack enclosure that holds six 3KW power supplies, and also the power supplies themselves. They can be connected together to double the power output. The rack enclosure splits the PSUs into 2 banks of 3, delivering up to 5.9KW of N+1 redundant power per bank. The banks can be connected together to get N+2 redundancy at about 10.8 kilowatts, and about 18 KW with no redundancy. The enclosures have 2 separate 3-phase inputs each. They are intended for use with old HP/Compaq blade servers, but could probably be re-purposed for other things such as driving CNC stepper motors or charging batteries. No guarantees on functionality outside of intended use, but could work if you know what you are doing. Note: Only one of these comes with the pictured owner's manual, rail kit, and current sharing link wire. First come, first served. Can ship LTL anywhere in the US for an extra cost. Let me know your location and ZIP code for a quote. Price negotiable, make an offer! Local pickup in Columbus, Ohio. Asking $175 each set. Note: The first image isn't mine, but it shows the back of the enclosure a bit better.  Not my picture, but shows the rear better.  Both sets of power supplies. The one with the box also has the rail kit and manuals.  The label on one of the PSU modules.  Shot of the rear of the device when packed on the pallet.  Manuals and rail kit. Note: Only included with one of these. First come, first served.  Front of the enclosure where the PSUs reside. |
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I'm not weighing in on the polished vs unpolished debate (or sanded properly or not) ... but I do want to point out this: Other fpga manufacturers are not having throttling issues. There are no other FPGA manufacturers that are utilizing these chips in this manner, so it's basically a first adopter problem for BFL in design and operation. Virtually all other FPGA applications do not utilize the chip to the capacity bitcoin mining does, which is, as I understand it, the fundamental problem BFL had in the beginning with their designs and simulations and the start/root cause of all the mystery to begin with. Not only that, but BFL is the only one using a chip that has metal packaging, all the rest are plastic, so comparisons between them don't make a whole lot of sense.. |
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Only a few hours left, it is not looking good.  The real kick in the nuts is how close it is, argh! Even if you don't hear anything today, I wouldn't pay out on the bet too quickly, because some users have reported not getting a notification when it ships. If it has shipped but no notification, that would change the results. |
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You are using Tor and got an IP that someone who got banned for trolling used? lol I only see that message when I'm really banned. And if your "ban" only lasts for 10 minutes you're lucky. Mine usually lasts 7 days Could be, but it's a bit weird since registering through Tor is "not possible" on this forum and Theymos registered this account for me. I thought the system bans users and not ips, someone could get a new ip-address within seconds. kind regards, a nice guy Access thru Tor is allowed, but registration is not. Bans are account level and IP level. Try a new exit. |
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Is it just me, or does that look like a triple slot wide card?
Yeah it looks like it. Looks like it is way long too, maybe more than 13 inches. |
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Right now, transactions may be a little slower than usual due to the very high difficulty and comparatively low hash rate. See http://bitcoin.sipa.be/ for some charts. Next retarget is in just a few blocks, and that will help with the speed of confirmations. |
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I would be happy to use a service provided by Zhou Tong in the future, however unlikely that might be.
Here you go: https://nameterrific.com/ <-- started by Zhou Tong |
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Had you taken the time to run through the grits after sanding the chip, it is quite possible, neigh probable, the singles would not be having such bad throttling issues.
If you've done any recent research, most of the "mirror finish" stuff has been debunked, seriously. Other fpga manufacturers are not having throttling issues. Whether that is because they aren't utilizing the chips as well as you are, or because your thermal designs are terrible, is debatable. What isn't debatable is years of research in which techniques provide the best cooling for a chip, regardless of whether it's a cpu, gpu, fpga, or asic.
Umm.. they get plenty of "throttling", if they turn the speed up to insane levels. Technically it is just increased error rates, which indicates a need to reduce the speed to compensate. As i stated before, I do like your company and i do appreciate what you're trying to do. What I don't like is the excuses you are giving regarding blatant design flaws. It will be interesting to see what the final mini-rig product looks like and whether or not you've learned from mistakes you've made with the singles.
Perhaps you should have a go at the polishing experiment (or whatever else you can think up), and let us know how it works? I am always interested to know the results of real world tests. Before calling it a "mistake", prove that it is wrong. |
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