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15.65 x 220v = 3443 /2 = 1721watts for each Neptune "At the wall"
pretty close for horseshoes and hand-gernades
3.4+ th/s each, so 3400/1721 is 1.9+Gh/s per watt or .506 watt/Gh/s ... "right out of the box"
Now who's "stoned"? That's figuring at 3.4, and it's actually a bit better, as you see here.
Your 2000 watt .57watt/gh/s sounds like you may have power delivery problems to me, I can't be that "lucky"
Nice.. One comment on the VRM temps.. 85C is the max temp rating from Ericsson and given that they also get driven 10A above spec from the factory I'd recommend trying to get those temps a bit lower. Not that you plan to run them forever, but 20C over temp and 10A over current might burn them up in a few months. Some look like they are getting close to the destructive limit (125c I think).
General update for those following RMA activity: After weeks of waiting I finally received the two cubes today that I had to RMA. I hope to get them setup tomorrow.. And I hope they work. I was told my "RMA has been fixed," but I put a small X on each of them and the boxes I got back are unmarked. Most likely they are not the cubes I sent them.
Quick timeline, minus several follow ups via email and phone:
7/2 - issue reported with 2 cubes and controller card
7/8 - RMA authorized, shipping label issued
7/8 - RMA dispatched
7/21 - replacement controller card received
7/28 - 2 cubes received
I doubt they had gotten trough batch 0 without all the refunds however, seems to be some terrible early yields for 20nm :/
but its still above and beyond the 150Gh/s average on the 28nm Jupiter series asics.(600Gh/s /4)
So a single 20nm Neppie asic actually hashes faster than an entire Jupiter! (4-----28nm's)
So I'm not really going to agree with "Terrible early yields" just because our dreams of a 6th/s Neptune didn't come true...
The 20nm asic is pretty good actually imho... but who else has another 20nm asic to compare it to? Nobody!
They are definitely pretty good.. when they work. You had better luck than I did, I'm weeks into an RMA for two cubes and a controller card that didn't function. I finally received the controller card but absolutely no news on the cubes.
Re: [6600Th] Eligius: 0% Fee BTC, 105% PPS NMC, No registration, CPPSRB (New Thread)
Is anyone else having connectivity issues or is a problem in my DC?
No problems here. Connecting from US.
and you guys didn't believe me 
said it cpl times in here 
hehe
said it cpl times in here heheI did! Just confirming your findings match my friend's results.
@ user27
Is the warmer ASIC with the cooler VRM the submerged one?
If so a small heatsink on the ASIC also submerged might help lower current.
Is the warmer ASIC with the cooler VRM the submerged one?
If so a small heatsink on the ASIC also submerged might help lower current.
That's not how evap cooling works; the bath is at 60 degrees and as soon as anything gets above that the liquid boils carrying the heat away. Heat sinks go at the other end of the system to cool the water in the loop.
u27
Yes but..
Surface area is still relevent; greater surface area could boil (or convect) more fluid if there is enough heat to dissipate.Regardless... Awesome work on this, very cool!
The teaser
Code:
root@Neptune:~# cat /var/run/.waas_curfreq
-1 -1 -1 -1 500 500 550 500 500 500 525 525 500 500 550 500 475 500 525 500 475 525 500 525
-1 -1 -1 -1 500 500 550 500 500 500 525 525 500 500 550 500 475 500 525 500 475 525 500 525
I must have done something wrong? As I cannot set it to 525.
As by your posts, I modified 'vi /config/advanced.conf' then did 'waas'.
Doing this I have success in modifying the voltage, and I can modify the frequency as well... but when ever I try 525 instead of 475 or 500 the 'waas' will not accept it (500 is maximum).
How did you get 525 ?
I took a look at the waas source on github and there is a check for max frequency set at 500. You'd either need to edit and build this utility (and I wouldn't be surprised if that's what tolip did) or you can probably use the same trick that worked for the Jupiters and reset the clock before starting cgminer.
The teaser
Code:
root@Neptune:~# cat /var/run/.waas_curfreq
-1 -1 -1 -1 500 500 550 500 500 500 525 525 500 500 550 500 475 500 525 500 475 525 500 525
-1 -1 -1 -1 500 500 550 500 500 500 525 525 500 500 550 500 475 500 525 500 475 525 500 525
That's a great teaser, had to do a double-take. *sigh* heat is my major issue.
What is safe voltage to increase to?
u27
I have gone all the way up on a few dies for a few minutes. Usually this did not encourage them much. What did work for most dies is power cycling the cube while the controller card runs. There are more steps in Kurt's troubleshooting post that involve resetting the miner. I had to do this about 20-25 times in the first week.
If you reset 25 times and it still doesn't work then you'll be ready to RMA that cube. I had to do this with two of my cubes and a controller card.
again with insufficient packaging. I don't know who would think a single cardboard strip would survive transport. Cubes were all over the place in one box, their metal shell bent on some.Im @ 3.53 with new FW 1.0
You found the reason behind the performance gain tolip.. I have two Neptunes, one with its controller card and two cubes currently stuck in a slower than communicated RMA process.
I repurposed a Jupiter controller card to run the orphaned cubes and this 3-cube machine has seen zero change on the new firmware. I believe that supports your pegged CPU observation quite nicely
That 2% was probably getting lost on the wire or flushed from a full buffer.It just times out after a while/
Same from different browsers and different devices.
2nd die on first chip has not worked at any point; totally screwed I think.
Have you tried a ribbon cable from a working cube on that one?
YMMV
The other three dies on that cube work for the most part so I think cable issues are unlikely to be the cause; I have tried swapping that cube with another one i.e. different PCI-e cable, different PSU, different ribbon, different beagle socket/
I managed to get the firmware uploaded; must have tried 8 or 9 times that timed out and then it worked for no apparent reason. Now I have no advanced tab and additional errors:
1.1.x is ASIC 2 die 2, increase the V on that die. As Tiggger said that's an indication that the die/VRMs have turned off.
If you can't bring up the advanced tab try clearing browser cache. Also Elenelen reports it can take some time to load so give it a few minutes. Worst case, use putty to login and edit the VRM config file manually then reboot.
Here's something that won't help haters and trolls : Firmware 1.00 for Neptunes
5-10% speed improvement. We'll see on long term.
5-10% speed improvement. We'll see on long term.
Nice.. applied. The link above is for the bin, here's a link to the news release with changes:
https://www.kncminer.com/news/news-97
Update: Running new FW for about 12 hours now. 2-3% increase in hash rate. Definitely not seeing 5-10%, wish I was!
After 2.5 days running with Volt-tuned 500 Mhz, this is what currently is possible: 3.500 Th/s
That's nice
I'm a little lower as I can't dial everthing up to 500 just yet, but I have picked up about 100Gh/s over the last 8-10 hours with today's firmware release.Re: [6600Th] Eligius: 0% Fee BTC, 105% PPS NMC, No registration, CPPSRB (New Thread)
So does it really matter to set the payout higher? I normally don't see a payout until .4-.8. This coming one will be around 1.0. If I had set the rate at .25, would I have already seen a payout, or just still accumulating waiting on enough blocks found to payout?
Yes and no. The longer the queue, the longer everyone will wait. The higher your minimum payout, the longer you will wait.
wizkid performs a manual payout when the queue gets this large, so you can expect things to normalize pretty soon.
Capacitors = magic. Can't explain that!
Therefore, PFC=PFM.
Class dismissed.
my corsair 1200w when connect asics neptune turns off
any solution ?
any solution ?
Different PSU or two other options..
-lower the clock speeds on the advanced tab (change your pool settings if you can't do this before it shuts off.. Kurt's troubleshooting guide has the complete steps)
-buy/build a connector that will allow you to bridge two rails from the PSU to the cube.
That sounds like psuedo-science garbage, and isn't backed up in any way by the link you have given.
Can you provide any support for your claims?
Can you provide any support for your claims?
It's not entirely pseudo-science. He's missing some key parts of the equation and using big words to sound smart. In essence, he's regurgitating things he's read, but doesn't fully understand. Now, if he comes back here with a bunch of calculus derived from something like, oh I don't know, Maxwell's equations, then we can start to take him a little more seriously.
That part about DC connectors and heat is 99.999% dumb though.
The link in my earlier post has a more articulate description of power factor than what Phoenix tried to provide:
http://power-topics.blogspot.com/2008/02/what-is-pfc-and-why-do-i-need-it.html
Good PFC can also reduce ripple, so I agree with giving 0.001% credit where credit is due.
Here's something that won't help haters and trolls : Firmware 1.00 for Neptunes
5-10% speed improvement. We'll see on long term.
5-10% speed improvement. We'll see on long term.
Nice.. applied. The link above is for the bin, here's a link to the news release with changes:
https://www.kncminer.com/news/news-97
This helps sanitize the thread and condense it some to relevant, intelligent discussion:
"This user is currently ignored."
Arguing with him is why this thread is over 1800 pages.
"This user is currently ignored."
Arguing with him is why this thread is over 1800 pages.
There is often humor for me in watching it play out, but I usually resist joining in the fray.
I broke in hoping to spare someone from spending money on PFC equipment when a decent power supply is all they need!
What do you think about potting the entire thing then putting it into running water? A giant cheap water cooler
sounds interesting.. i look forward to your write up! this would certainly void the warranty.
i am (seriously) considering piping water in a loop from my pool and using that as a 30,000 gallon heat sink
i even bought a variable speed pool pump so i can run it 24/7 at a moderate flow rate. just need to work out a few kinks linking WC parts together and how to safely run water through my attic.
You might check about chlorine and copper. No idea personally.
You can just place a radiator in the pool water for inexpensive heat exchanger.
Then your pool plumbing can be done with a hose cutter and screw driver frugally.
PVC thru the attic or copper or tough garden hose.
Does your attic ever freeze?
I'm contemplating burying a small coil of copper in the yard for heat exchange.
I have a high water table here.
Can start on a budget with garden pump and a bucket.
Good to have backups too, save the air cooling toys.
I live in a shoebox with single window unit A/C and the as delivered had me hiding in other room.
I cool with outdoor Illinois air whatever it is.
Today I start with 82F/28C/300K ambient.
Watch out for cheapo $20-25 waterblocks on ebay.
(good? bad? depends if ya know ahead of time)
The blue/black metal ones, the fittings are not G1/4 so whatever you get is what you have forever.
The ones for GPU with 90 installed do not come with CPU mounting.
DO NOT TRY TO TURN THE 90 BARBS they are glued in.
(unless you want to clean and reglue threads)
Straight hose barbs are great but hose has minimum bend radius, will it fit?
They are not flat. Lapping WB takes some time and cost of wet sandpaper 400-1200 as needed.
I like em for value, have to add labor, what is time worth? fun?
I doubt customer satisfaction is high for most first time customers with theese.
You have been warned
I DID get some clear ones from ebay that look real good (also needed minor lapping)
Next stop for decent WB is about $40, times 5 and most people are done calculating.
Pumps, radiators, fittings, adds up fast, how committed are you?
Alphacool rotating 90's are shit avoid at all cost! One of me ASIC went swimming.
EDIT Alphacool makes great radiators.
Also keep in mind airflow for VRMs.
WB obstructs air and mounts block more.
I go with high mounts.
FrozenCPU has cupons on web if you google.
YMMV
EDIT
A pool COVER pump is about the right size for watercooling.
Triple check for leaks if you use much higher flow and pressure.
Some of the cheapo flex fittings may explode downstream from a pool filter pump.
It is the better problem to have. RE: too high/low pressure!
Great idea, another reason to envy peeps with pools as I sweat by the hot ASICs
Always very good comments tolip
I have done most of my homework.. chlorine does attack copper but pH is the big issue. Pool heater heat exchangers are often copper. I did buy cheapie WBs from HK with side entry
so they are probably low on copper content. There should be minimum airflow distruption and I plan to reorganize fans and heatsinks for better VRM cooling. Maybe experiment with some piping and JB weld on a Jupiter board for lower risk to earnings. I will have a pressure relief value to 'short' the loop and will have the setup after the filter on a 'side' loop from the main run and expect the pressure should stay quite low.The radiator in the pool is a good idea.. I thought about this and my concern at the time was that I have a pretty long run (would add ~50-60 feet to the loop) and about 10-12ft of vertical going into and coming out of the attic space.
Freezing in the attic isn't a big concern here in central Florida, but with the heat these put out we can engineer it so it cannot freeze in any climate. If it did get cold enough I could even skip the radiator
Anyway... still thinking it all through and I do very much appreciate your input!
If you're not interested, move on. PSU's do not contain PFCC's, lol. They are a totally different animal.
Almost all PSUs built in the last decade have power factor correction:
http://power-topics.blogspot.com/2008/02/what-is-pfc-and-why-do-i-need-it.html
Most compete on what kind of PFC they offer:
Seasonic.. http://www.seasonicusa.com/faq.htm
Corsair.. http://www.newegg.com/Product/Product.aspx?Item=N82E16817139010
Coolmax.. http://www.newegg.com/Product/Product.aspx?Item=N82E16817159020
Enermax.. http://www.ncix.com/detail/enermax-revolution-1000w-atx12v-eps12v80-cf-90791.htm
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
Are you working with, or at least following, the EPA's work by chance? Because they covered this a decade ago and practically all PSUs include their own PFC. In fact, the program was so successful that the EPA has sunset the program. This helped manufacturers reduce PSU failures and returns so it was a no brainer.
http://www.energystar.gov/index.cfm?c=archives.power_supplies
Can I get my resonant electrolysis pyramid in red please?
Yeah the Navy is doing some cool stuff in their research labs, but electrolysis of seawater is a different topic. If you want to power your miners on seawater, game on dude - send me the specs. I read the article, did you think PFC meant pure fucking catalyst?