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Nothing to do with bitcoin. Delete the thread.
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- they surely use mostly the edge pins of the chip (because of quick QFN to FCBGA conversion), leaving most of the middle pins unused;
1) This is simply wrong. When converting from QFN to FCBGA, the upper layer of metal on the silicon is changed to a miniature version of the BGA package. Proof of this is the photos of the wire bonding test die. The attachment points are (now) in an array, not along the edge. Note that the die can have typically more or sometimes less connections than the final BGA package. The BGA package is simply a very tiny multi-layer PCB that translates the chip balls/bumps to the package ball grid on the bottom. I wrote this just because of where the wires went on the photo of test die. Mostly the edge pins, most of the middle pins were left unused, so I concluded they have done it to avoid big changes of their PCB (miner's one, not BGA's one). But I agree - it could be because of difficulty of wiring the middle pins. |
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Are you guys sure this black spec is on the chip itself? Looks to me like something on the ceiling reflected on the chip.... I'd thought the same, so I wrote " if made of". I think Entropy is strongly biased against BFL. His warnings would be good if someone could correct something because of them. Else, it's spreading of FUD. We have to wait and see. All pre-ordering was a kind of betting and the result is still not certain. |
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It won't take much either. Just the normal day to night swings will do it. I have seen 100s of thousands of underfilled chips over 10 process generations, many with underfill defects, and none of them looked as bad as these.
The black blotch shown on greyhawk's zoom is a scrap part. That is underfill, it will prevent proper cooling and is impossible to sand off without cracking the brittle silicon.
Entropy, take it easy. This black blotch, if made of underfill, will prevent ideal cooling. When using with thermal paste or pads, the cooling will be proper enough. I can't say nothing about the voids, you are the professional, but the day-night temperature changes should be compensated by variable speed of the fan, keeping the board temperature quite stable. Enigma pointed to strange looking soldering points, but: - they surely use mostly the edge pins of the chip (because of quick QFN to FCBGA conversion), leaving most of the middle pins unused; - Enigma used a photo of a board which was put through the oven without chips, not the one just prepared to place them; - the photo was blurry and unfocused, so Enigma's conclusions are plain guesswork. |
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Looks like trying to legitimize the primeasic seller.  (Yes, I see your point - just kidding.) |
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Loshia, it was you who had zero doubts. You've won your lottery ticket, but it was a kind of lottery, so don't generalize.
Phinneaus, most of the listed points didn't applied to Avalon team. They were known of FPGAs which they delivered before.
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The date? In the same place where one can tell about former Army Ranger friends coming with him: in the e-mail.
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industrial machinery (for manufacturing) |
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Over 80 kWh in standard house?
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Sure, send me $75 and I'll send you something that mines bits at 4 GH/s today (well, tomorrow, Monday the 3rd).
Are we using the same calendar? Now that is a ship date you can not possibly make... Even when joking you set an impossible ship date LOL sorry couldn't resist!!! Why is that a ship date I can't possibly make? I assure you with 100% confidence that I can make that ship date. (...) accurate dates just aren't your thing are they? Will you please start making sense? What the hell are you talking about? Inaba, tomorrow Monday is the 4th, not the 3th. (Edited the number, as I mistakenly wrote "5th" because looking at date past midnight. Funny to make an error while correcting someone. ) (BTW, as bumping is done, a small update of https://forums.butterflylabs.com/announcements/692-bfl-asic-status-2.html would be welcome, please.) |
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The 4.0 doesn't stand for the version of the product. The 4.0 stands for the 4MH/s They are keeping the 4 MH/s value - it looks like a CPU inside, mining with this exact speed. |
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Thank you. I think regular updates here every two weeks or so, would be welcome.
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Chip design will be finalized on 2013-02-15. The wafer fabrication will start 2013-03-01. How is it going? |
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Nothing new in the picture. BFL customers have been shown their boxes months earlier. However BFL didn't falsely claimed they were shipping them. Total lie. (...) No, it is you who is lying. BFL made promises they couldn't fulfill, but they never claimed "we shipped 53 units", "we mount 12 per day". Now, PuertoLibre has got his "miracle" picture. It seems they are empty. It's strange they didn't take pictures of piles of boards or half ready devices, while they claim they are going to start shipping on Monday.
It's more like you are just speculating it is the case rather than knowing it is the case (of fans). Simply do recall all bitcointalk posts about Avalon since 20th January. Who was right? You, being so sure to get the parcel fast? Or rather people showing strange things in Avalon team's behavior? And stop trolling. If no, people won't help you when your unit(s) go south with "bus error", like libertybuck's units. |
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Nothing new in the picture. BFL customers have been shown their boxes months earlier. However BFL didn't falsely claimed they were shipping them.
Now, PuertoLibre has got his "miracle" picture. It seems they are empty. It's strange they didn't take pictures of piles of boards or half ready devices, while they claim they are going to start shipping on Monday.
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While not diced, the picture of the full wafer does show the separation of the individual dice.. They look awfully 'square' to me.. This single die looks rectangular. Optical dillusion, perhaps? No, Enigma, you simply didn't read what PuertoLibre had wrote: Composite picture of Test Chips Once again: Composite picture...It's made of four different pictures. Do look at the picture more carefully and you will see boundaries of the subpictures. The wires "crossings" will help you. |
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Many people have turned their GPU again after BTC rate grow.
The earnings are greater than they were in the middle of 2012.
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