Second, you devalued your own name when you went from being a seemingly legit manufacturer of hardware based on other people's boards, to just making up impossible specs and faking "proof" of them.
Third, I did get an official response from your company before I posted negative feedback. That official response was handwaving about a magic board and a faked cgminer screenshot.
Allegedly falsified. What would you do to make it right if its not faked? |
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No, no they're not. Its just the test range displayed is at the very low end of the chip to demonstrate best W/Gh. The actual release W/GH will be significantly higher, as will the GH/chip. But even at .25 at chip, there are already chips that can achieve that at low clock speeds, and many more to come.
According to previous updates, the production chips would have have greater efficiency: Update
Some details of BE300:
Process: tsmc 28nm hpc
Package: fclga (5mm x 5mm)
Normal Mode:
0.7v vdd
6gh/s per chip
8gh/s-12gh/s per chip for mass production
0.343w/g on chip
~0.3w/g on chip for mass production
Low Power Mode:
0.55v vdd
4.5gh/s per chip
6gh/s-9gh/s per chip for mass production
0.225w/g on chip
~0.2w/g on chip for mass production
The schedule of BE300 producing: First batch production will be done next Feb.
So, why are you assuming that they will be less efficient? You're missing the point. There are 4 variables, not 2. W/GH, GH/chip and $/GH [and so $/chip]. In order to maximise $/chip, GH/chip will be raised much higher for a retail product than you see in those tests. That in turn, increases W/GH. I'm not saying the chips can't achieve those lower W/Gh, I'm just saying don't be disappointed when the products based on those chips aren't .25W/GH. [This is of course ignoring that chip W/GH also isn't = to product W/GH.] |
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Irrespective of the rest of the discussion, when the publicly known author of cgminer as the person who wrote the software and driver you're allegedly using says that your screenshot is impossible, the community is in their right to call your claims a scam and you should provide an explanation or provide a public apology and retract your claims.
Is it not possible there is a third scenario, that the software is undoctered, but still behaving in a fashion that you didn't expect it to? |
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I have a C1 that I have had for about two weeks. the first week or so it was fine, but it has started to drop chips after a few hours of running. the chips that X out are generally on the 2nd two boards and it can be anywhere from 1 or two per board to and the entire board that goes offline.
Even when the chips are not showing X, the hash rate bounces around between about 700 and 1100ghs.
I have one Rosewill capstone PSU (1000W gold) dedicated to running the C1 and cooling pump.
It came with the 10/16 firmware and was set to 250/0725. I tried updating the software to 11/26 and set the freq/voltage to 250/0760, but it is still very inconsistent.
I have two C1’s, and the other one seems to hash steadily at just over 1000ghs on the 10/16 firmware at the defaults of 250/0725. The second one also has it's own dedicated Roswiill Capstone 1000w.
Any suggestions, or do I have a defective unit?
(i've sent the same content to info@bitmain)
If its time related then start investigating power related things. The PSU would be the first thing to look at. Try powering only the bad blade pair (as long as they're the ones that power the controller) only and see if they still drop out. Alternatively, you could just swap your PSUs over and see if the problem moves. |
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Are you able to SSH in during one of those states and see what the cgminer window reports?
what command do I run while I am ssh into the S4 to check what the cgminer is doing? I'm not actually sure off the top of my head, to get cgminer window. Someone else will know and be around soon enough. |
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On the November 26 firmware, when setting 275MHz, it comes up as 2,275   yet another rushed firmware by bitmain...how many other typos are in the code  ...can we get a fix for that (or location of the frequency table)? Passed on to engineers. |
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All I see is horror stories right, no one comes on to complain about the good stuff....  Have to remember that Bitmain typically sells on a scale of # units no one else comes close to in the current market, and so 1-5% of sales is a significant number of people / posts. |
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Oh interesting design. I think as a few others have said, it will be hard to justify a 6 week lead time as people either need PSUs now or they don't need PSUs. Will also have to find a reliable and bountiful source of the PSUs themselves.
Ps, can you create a tiny plastic cover for the interface pins that are visible on the front side? Then that front side has no touchable live surfaces.
Unfortunately, many FCI connectors aren't stocked anywhere and seems to be manufactured on request. That's why I need some time to get them. Your request on the pins cover is legit, I'll have a look at something easy to do. Worst case will be to cover them with some non conductive rubber. What I was really saying is this might be something you'll have to put down for in advance, and sell as they're in stock or a few weeks out. If you can cover those pins then its a significant USP over the DPS2000-BB which has exposed stuff everywhere without a case, and has downward facing pins which get very close to whatever shelving you use. Those that use metallic shelving or even treated wood have to be careful and usually sit it on something. |
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I'm not sure I understand what the C20 is doing there?
That PSU does not have the conventional C## input plug, only a proprietary IBM connector. Exactly, you were faster than me. here is a pic of the 3 pins proprietary connector Oh interesting design. I think as a few others have said, it will be hard to justify a 6 week lead time as people either need PSUs now or they don't need PSUs. Will also have to find a reliable and bountiful source of the PSUs themselves. Ps, can you create a tiny plastic cover for the interface pins that are visible on the front side? Then that front side has no touchable live surfaces. |
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Is the cooling kit stated in OP a step above from what Bitmain offers? Plus, when BitmainTech says 3.0M Head Pressure and 450L/h flow, how far above that can I go?
Edit: Is it ok to use a pair of 650w PSU's? I guess one could power each card independently... however, I'm not 100% on that.
It is the syscooling / Bitmain kit. You can go as far above it as you want, but you'll just be wasting electricity and costing more with an expensive pump. Pair of PSUs is fine, just don't plug two into one PCB. Much Thanks dogie  I was looking at a Swiftec pump kit, to at least, serve as replacement; it's slightly faster but with nearly twice the recommended head pressure. Plus I read Swiftec makes a much more reliable pump and has better service than SysCooling. Or I could even use the SysCooling pumps as backups, we'll see what happens if I bite the bullet and invest in a reliable pump. If I were you, I'd just buy two C1 cooling kits. For $50 you have an exact replica backup set of watercooling. Those 360mm radiators cost $60 in the US anyway! |
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tubes for the radiators soften if the miner has temperature over 40C
Thats.... thats just physics... Physics yeah, for the "quality" of the tubes. No, that's just how all materials behave when heated. All watercooling tubing is exactly the same material - acrylic. It is ALWAYS going to 'soften' when heated. I'll give you $50 if you can send me acrylic watercooling tubing that doesn't get softer when heated. |
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I like the idea of building a simple brick-powered introductory miner with USB connection. Something a n00b can buy, inexpensive but reasonably efficient and not requiring advanced computer knowledge or miscellaneous hardware stashes to use and maintain. Just saying, Dogie's not the only one thinking it. I've always said there wasn't enough (or good-enough) hardware in the mid-range consumer sector between USB stick miners and farm-grade hardware.
the problem therein lies that mid range miners, like USB stick miners are pretty much novelty items now. Sales volume won't command the demand on build investments, and making power bricks is just more manufacturing expense. I do believe however, that there is no requirement to build humongous large-power miners with such efficient chips. FC would do better to keep product under 4TH/s... even that is a good home mining rig at these efficiencies and which can also be deployed in a farm setting. I guess we'll have to wait and see. I disagree. These chips are ~2-3x more efficient than the next competitor's chips. With mining margins very thin, if you can get 2-3x the hashrate with the same electricity cost, why wouldn't you? Of course, the price needs to be competitive as well. No, no they're not. Its just the test range displayed is at the very low end of the chip to demonstrate best W/Gh. The actual release W/GH will be significantly higher, as will the GH/chip. But even at .25 at chip, there are already chips that can achieve that at low clock speeds, and many more to come. |
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I'm not sure I understand what the C20 is doing there?
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There would be no need to create a GUI if the driver support was provided to CKolivas and merged with mainbranch CGMiner instead of creating another fork that gets abandoned 3 months later too never be updated again like what Rockxie has done over at Rockminer.
Well for new people to mining having to use cgminer could be a little confusing. I am not saying fork anything just have a front end for it that is simple. Yes, I agree. I miss the days of even GUIMiner. |
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Now that SP35s are starting to show up, can someone who has one in North America confirm what the PSU connector is and what (if any) power adapter cords the units come with? The Emerson-based SP30s have a C20 PSU connector and come with 2 IEC C19-C14 power cords ... do the SP35s come with the same?
Its standard C13, although there are some included C13-C14 cables for those running PDUs. From your 360 degree view the PSU connector appears to be a C14 (i.e. just like a regular ATX PSU). Can you post pics of the 2 ends of the cables that come with the SP35? And how long are those cables? Thanks in advance. C13 + C14, just a male female extension cord, maybe 1m. I'll have a full guide up soon enough, maybe Monday. |
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Kudos, man. This is way cool! What software did you use to stitch it all together with? That one is pretty simple javascript, it loads all the images on top of each other and then displays the next in the sequence as you move your mouse. There's better ones I'll put on later which let you drag and zoom to a higher res version, but they don't physically fit on my site. I've got the 360 in up to 4K, but I don't think anyone would appreciate 160mb in one go  |
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Don't flash with the potentially bad image, use the one in post #2. Then post a screenshot of the interface if its still up while frozen.
It just happened a few minutes after I put in the new SD card with the image burned from Post #2 - here is the Miner status screen: I have changed the voltage to 0720 with a Frequency of 200M (I think the default was set to 0725) and will test this. Hmm, the last time I saw that error (all temps also go to 0) it was inconclusive. Are you able to SSH in during one of those states and see what the cgminer window reports? Do you have a spare PSU you can test for a few hours with [on the off chance that you have one of the PCI-E models]? |
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Ignore those things, they have exposed terminals and are NOT user friendly. I don't know why they're being discussed for an introductory consumer device.
Exposed terminals - shock horror - and why the shouting ? You should lie low after having recommended duff 12V supplies. We're talking reliability here. 1) Yes, exposed terminals on a beginner's device is not a good idea - that should be obvious. 2) What do you mean shouting? 3) What 'duff' 12V supplies? You mean the ones on Amazon, that sell 100s a month and have a 4+ star rating? |
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