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Got it today; dead dies, overheating VRM's, the whole works.
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try the "upgrade" tab on the knc web control page.
Tried it, the thing sits there and does nothing. I just get "Sending request to 192.168.1....." and it carrys on mining. One die is totally dead and this one is not looking much better:  EDIT: Dead one:  |
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it was "screen -r cgminer" on my Saturn
That has done it, thanks. Now I get to see 2.9TH and a screen full of "disabled for 300 seconds due to repeated hardware errors". Way more disabled cores than accepted shares. Is it recommended to update to f/w 1.0? If so, how do I do it? (I have the bin file) |
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username is root, password by default is "admin", and your password configured in web admin page will replace the default password
Thanks, I'm in. Now I don't know how to get the stats up. |
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Neptune arrived dispite me requesting refund nearly a month ago.
It has been beaten up in transit and runs like a pig; hot VRM's and dead dies.
What's the SSH password?
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What's the price of the N7200?
Last I checked £248 for 5.4kg / 4L. |
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Both 7000 and 7100 can be used with the same closed loop system. The point is that the larger the difference between ambient (i.e. outside) temp and the condensation point of the working fluid the more efficient the operation. Now obviously a fluid which boils at 400C would be very efficient but it would also mean the processors would be 400C as well which wouldn't be good. So the optimal working fluid in a two phase immersion cooling system is one with the HIGHEST boiling point which is still maintains the processors at an acceptable temp.
Yep, 34 (N/7000) is not really workable but 61 (N/7100) is fairly easy to condense and also a good working temp for chips; I would not be comfortable at 98 (N/7300) but 76 (N/7200) might be workable once the cooling is dialed in. Higher boiling point also increases the usefulness of the hot water returned. u27 |
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or you can remove the elec current limit with corsair-link software.
That you can, but it resets every time you power up so it's a pain for multi PSU. Also the Corsair Link has a MB USB connector to you will need an adapter or an open PC to hook it up. You can set each virtual rail to 40A which is more than enough for 500Mhz Neptune. If you scroll up there are a number of cables available which allow you to connect each cube to two virtual rails thus doubling the default 20A setting. Frankly the PSU is excellent and KfC screwed up their design using a single PCI-e; a PSU should shut down if you try to pull upwards of 20A over a PCI-e cable! I will sleep easier knowing there is some level of 12v over current protection for my Neppy. u27 |
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I'm going to ignore your ignorance on this one, I have several years in electrical resonant research and development, as does my brother. We have over 100 members in our study group, which spans the globe, and has been in operation for about 5 years proving what you say is BS. Many new energy saving/producing products will be hitting the market soon as a result of some of our members hard work.
That's a strong "yes" on your belief in pyramid power then; shame Neptune is cubes. "it's called resistance" and it could increase with load to a possibly significant level on a low voltage DC circuit; that's the reason your supply is AC at a much higher voltage thus effectively eliminating the problem. You can argue that resistance does still increase with load and that's true; just not to a remotely significant level on an AC mains supply. There is ZERO chance that any variations on the AC supply will make it through a modern switch mode PSU and have am impact on the DC output; you couldn't be more wrong. "the magnetic field induction which moves the current"... just no. |
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Did you even read the post? Lousy power? Not applicable.
I read the post; it allowed you to demonstrate your lack of knowledge on the subject very well. Are you also a believer in pyramid power by chance? u27 |
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Dropt... In Hawaii we pay 43 cents a kilowatthour, and other places have similar woes. Savings with PFC's are achieved through magnetic resistance being lowered through resonant pulse, and has absolutely nothing to do with "Quality of service" You really should read a bit more before judging the cuisine. Simply put, the more electric you draw, the higher the savings will be, on a sliding scale. The more power you draw from your meter, the harder it is to draw more, it's called resistance, which is what this fights. PFC's make everything run more efficient by enhancing the magnetic field induction which moves the current, especially if your home is full of appliances which use capacitors, making all of them run more efficient with this magnetic field. It will also make those PCI connections COOLER for the same reasons.
and if you read my comment, it was meant for those who have multiple machines for that reason.
ROI on PFC gear is a pipe dream unless you're getting some seriously lousy power from you supplier. ...and you're joking about the PCI bit right? You're not seriously suggesting that one of these things would smooth the DC coming out of your PSU are you? u27 |
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Sorry, cross posting with rig photos thread...
I think he is running Novec 7000 which changes state at 35? Very difficult to condense the vapour on something like that unless you are in very low ambient temps or you have a crap load of below ambient cooling (a single pelt uses as much power as it transfers so hardly an economical option). Novec 7100 boils at 65 which is a perfectly acceptable temp for most chips to run at and a lot easier to condense the vapour from 65 than 35.
The thing with HFE's is that they solve all your the chip cooling problems and move them along the chain; if your asics are pulling 1000w then you then need at least 1000w of cooling to condense the vapour. 1000w of cooling is not so hard from 65 but it is quite a challenge from 35 depending on you ambient temps.
The main benefit of HFE is that it makes the heat usable; you can condense vapour from 65 with a radiator and water at 60 if you have high enough flow so that water is hot enough to be useful to heat water and such like. If your chips are happy to run at higher temps you can use 7200 or greater which allow the cooling water to be heated to higher temps which are even more useful.
smracer looks to be rocking the 7100 which is easier to work with and still yeilds chip temps of 65 for almost unlimited heat dissipation.
I'm not sure how I will get on with it at this early stage but my intention is to use Neptune at a 2kW water heater by the time winter comes to England.
u27
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I think he is running Novec 7000 which changes state at 35? Very difficult to condense the vapour on something like that unless you are in very low ambient temps or you have a crap load of below ambient cooling (a single pelt uses as much power as it transfers so hardly an economical option). Novec 7100 boils at 65 which is a perfectly acceptable temp for most chips to run at and a lot easier to condense the vapour from 65 than 35.
The thing with HFE's is that they solve all your the chip cooling problems and move them along the chain; if your asics are pulling 1000w then you then need at least 1000w of cooling to condense the vapour. 1000w of cooling is not so hard from 65 but it is quite a challenge from 35 depending on you ambient temps.
The main benefit of HFE is that it makes the heat usable; you can condense vapour from 65 with a radiator and water at 60 if you have high enough flow so that water is hot enough to be useful to heat water and such like. If your chips are happy to run at higher temps you can use 7200 or greater which allow the cooling water to be heated to higher temps which are even more useful.
smracer looks to be rocking the 7100 which is easier to work with and still yeilds chip temps of 65 for almost unlimited heat dissipation.
I'm not sure how I will get on with it at this early stage but my intention is to use Neptune as a 2kW water heater by the time winter comes to England.
u27
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user27 151xx 6 December(payment cleared 8th) Wire Transfer 1 England "In Progress"
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NEWS FLASH!My order says "Order #151## In progress" so it looks like I'm not getting my refund (which I requested as soon as spec was released, before they started shipping). u27  funny how it always seems to work out that way with a asic mnfg company...... I am sorry for your loss (I have a Titan coming....will join you in grief soon the way things seem will likely get a box of parts) Searing I feel your pain re Titan; difference is that Titan was not listed as refundable. |
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NEWS FLASH!My order says "Order #151## In progress" so it looks like I'm not getting my refund (which I requested as soon as spec was released, before they started shipping). u27
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NEWS FLASH
It's the 8th day into Q3 and my order still says "paid".
Payment cleared December 8th; I checked with my bank so that's seven full months.
Come on KnC, it's time to give me my money back!
u27
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PCB is 160mm x 135mm Holes >= 3mm 145mm x 120mm (145 is guess by also subrtacting 15 from 160 as they look uniform in pics. 75mm square pattern for ASIC cooler (3mm heatsink holes can be an issue with common mounting hardware I drilled my PCBs) (same as Intel LGA 1155/1156 garden variety heatsinks) height from ASIC side of PCB Tallest is cap near power input <25mm Next is top of ribbon connector at 15mm Next is power connector ~12mm from PCB to top of locking tab add for operation of tab on PCIe cable. Next is top of VRMs 7ish mm ASIC is approx 3mm YMMV  Perfect, thanks. Always nice to have dreams of 10x Neptune boards in Novec 7100 for a nice compact 4kW electric water heater. I have a 225mm diameter thick walled glass jar that would be ideal for purpose. Sounds like five would fit with 30mm gap between no problem but then for ten it would require those capacitors to be removed and re-soldered laying on their sides (plus a crap load of cooling). u27 |
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What are the dimensions of the Neptune board excluding the heat sink, ali plate and so on? Also what are the tallest components on the board and how tall are they?
Thanks
FYI: I don't even have an "in progress" on my order yet; maybe they have decided to honour my refund?
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Happy Neptune customer  I wish I were that happy. Order 151## payment cleared Dec 8th... still says "paid"... feel free to put that on the neppy order status thread over at KfC fox. |
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