What the f..... These thing is fantastic
Please step by step details
How we can do that
Please step by step details
How we can do that
You get a big jar, fill it with tap water ans submerge the board in it.
Trust me, I am an engineer
Topic: Swedish ASIC miner company kncminer.com - page 319. (Read 3049515 times)
You get a big jar, fill it with tap water ans submerge the board in it.
Trust me, I am an engineer
What the f..... These thing is fantastic
Please step by step details
How we can do that
Please step by step details
How we can do that
Neptune card in Novec 7100. This was just a quick test. Hopefully I will have more numbers tomorrow.
Edit - he's now posted a video of card running in Novec 7100
I am using a much bigger box for my final unit and hopefully I can fit 20-25 Neptune cards in the box with a very large radiator.
I will add them 5 at a time until I can't dissipate the heat anymore.
Here is the video - https://www.youtube.com/watch?v=gk3Vydo-L58
I will add them 5 at a time until I can't dissipate the heat anymore.
Here is the video - https://www.youtube.com/watch?v=gk3Vydo-L58
Hahaha... 2 cool.... Thanks Biffa
Not me, smracer in this thread: https://bitcointalksearch.org/topic/--7216
Neptune card in Novec 7100. This was just a quick test. Hopefully I will have more numbers tomorrow.
Sweet!
What do you do when the liquid gets hot? radiator?
YMMV
FUN!!!! Please keep us posted!
Neptune card in Novec 7100. This was just a quick test. Hopefully I will have more numbers tomorrow.
There was actually "Talk" early on about a dc/dc "Team" who was supposedly working on a custom solution if I remember correctly.... evidently that never transpired.
I can see why jelin was so frustrated with the AX1200i. It won't even power one Neptune module plus controller... the Over Current Protection (OCP) kicks in and the PSU shuts down.
Just FYI, the AX1200 (no i) works great, if you have one of those around. I think other folks have pushed the OCP way up on the iand had luck with that, also.
It would have been really cool (no pun intended ) if they had stuck to the 4 chip design and single case, and went with water-cooling, and heat-sinks on the VRM's, the "bigger" VRM's... but it probably would have gobbled even more power. I think tho that the absence of the bulky cooling tower will also help the VRM's, especially if they had heatsinks to catch even more cooling action...
Still waiting for someone to slap on some H-80's and apply some "Padrino tweaks"....
) if they had stuck to the 4 chip design and single case, and went with water-cooling, and heat-sinks on the VRM's, the "bigger" VRM's... but it probably would have gobbled even more power. I think tho that the absence of the bulky cooling tower will also help the VRM's, especially if they had heatsinks to catch even more cooling action...Still waiting for someone to slap on some H-80's and apply some "Padrino tweaks"....
Yeah, I agree. Unfortunately, the limiting thing behind overclocking seems to be the VRMs, which are already pushed close to the max. They are rated for 40amps, can be safely pushed to 48-50amps. (and of course, adding another 6 pin connector, but that's a relatively cheap and easy hack) That's the neptune at normal wattage and 500mhz. I wish KnC wasn't so stingy with the things that are not the ASIC!
Unless you replace those VRMs, better cooling can only get you so far.
If they came with 50amp VRMs, I would have slapped some nepton 280Ls on them and I'm guessing they could have been pushed up another 10-30%. I'm wondering if KnC will do that for batch 3 of the neptunes, just like batch 2 of the Jupiter had the performance bump.
Nah, who am I kidding. KnC wouldn't do that! Every move they have done over the past three months except completely shipping out new super jupiters when they destroyed the first shipment has been to their customers detriment.
It didnt take Elenelen long to ramp right up to 500mhz with simple vrm heatsinks. Imagine what we could do if that cooling tower, thermal blanket, and that stupid bar were all gone, and replaced with an H2O cooler. the vrms, and any heatsink you put on them would then have excellent exposure to airflow.
I can see why jelin was so frustrated with the AX1200i. It won't even power one Neptune module plus controller... the Over Current Protection (OCP) kicks in and the PSU shuts down.
As annoying as this is, it is a safety feature as it would normally be unusual to draw that much current through a single PCIe cable. So i blame KnC for not putting two PCIe jacks on each module, rather than Corsair for their smart PSU. Bitmain put two PCIe jacks on each S3 blade, but it turns out only one is needed. That's a forward thinking design (in case the BM1382 28nm chip needed the power) - KnC take note.
Corsair link software lets you increase the OCP limit which fixes the problem... BUT the link cable is designed to plug into a motherboard USB pin header, not into a USB port (which makes sense as the PSU is designed to be inside a PC). Damn, I've only got a laptop.
I've got 2-to-1 PCIe cables ordered from Cablez, hopefully they will spread the Amps between two ports on the PSU and get around the OCP.
I'm also trying to source an EVGA 1300W superNOVA G2, but no luck yet finding one in New Zealand.
So my Neptune has been delivered, visually looks ok, but I can't power it on yet.
As annoying as this is, it is a safety feature as it would normally be unusual to draw that much current through a single PCIe cable. So i blame KnC for not putting two PCIe jacks on each module, rather than Corsair for their smart PSU. Bitmain put two PCIe jacks on each S3 blade, but it turns out only one is needed. That's a forward thinking design (in case the BM1382 28nm chip needed the power) - KnC take note.
Corsair link software lets you increase the OCP limit which fixes the problem... BUT the link cable is designed to plug into a motherboard USB pin header, not into a USB port (which makes sense as the PSU is designed to be inside a PC). Damn, I've only got a laptop.
I've got 2-to-1 PCIe cables ordered from Cablez, hopefully they will spread the Amps between two ports on the PSU and get around the OCP.
I'm also trying to source an EVGA 1300W superNOVA G2, but no luck yet finding one in New Zealand.
So my Neptune has been delivered, visually looks ok, but I can't power it on yet.
my friend has one of those miners and it worked well so far, except it's very hot.
It would have been really cool (no pun intended ) if they had stuck to the 4 chip design and single case, and went with water-cooling, and heat-sinks on the VRM's, the "bigger" VRM's... but it probably would have gobbled even more power.
Still waiting for someone to slap on some H-80's and apply some "Padrino tweaks"....
) if they had stuck to the 4 chip design and single case, and went with water-cooling, and heat-sinks on the VRM's, the "bigger" VRM's... but it probably would have gobbled even more power. Still waiting for someone to slap on some H-80's and apply some "Padrino tweaks"....
How do you figure that's going to play out when almost everything is already maxed out on the Neptune?
mineral oil imersion, lol peltier coolers
It would have been really cool (no pun intended ) if they had stuck to the 4 chip design and single case, and went with water-cooling, and heat-sinks on the VRM's, the "bigger" VRM's... but it probably would have gobbled even more power.
Still waiting for someone to slap on some H-80's and apply some "Padrino tweaks"....
) if they had stuck to the 4 chip design and single case, and went with water-cooling, and heat-sinks on the VRM's, the "bigger" VRM's... but it probably would have gobbled even more power. Still waiting for someone to slap on some H-80's and apply some "Padrino tweaks"....
How do you figure that's going to play out when almost everything is already maxed out on the Neptune?
It would have been really cool (no pun intended ) if they had stuck to the 4 chip design and single case, and went with water-cooling, and heat-sinks on the VRM's, the "bigger" VRM's... but it probably would have gobbled even more power. I think tho that the absence of the bulky cooling tower will also help the VRM's, especially if they had heatsinks to catch even more cooling action...
Still waiting for someone to slap on some H-80's and apply some "Padrino tweaks"....
) if they had stuck to the 4 chip design and single case, and went with water-cooling, and heat-sinks on the VRM's, the "bigger" VRM's... but it probably would have gobbled even more power. I think tho that the absence of the bulky cooling tower will also help the VRM's, especially if they had heatsinks to catch even more cooling action...Still waiting for someone to slap on some H-80's and apply some "Padrino tweaks"....
I also doubt the original design of Neptune was meant to have 5 chips, like maybe it WAS supposed to be like Jupiter, and the chips were a bit slower than planned.
I think that is 100% obvious in view of the fact that the original pictures showed a four chip design (same as Jup). When they found out how crappy the chip would actually perform, they went to the five-cube scheme.Or here's another theory, the old KNC had a reputation for over-delivering on specs and the Neptune was going to hash at 4.1TH and feature 6 cubes.
After the company ethos changed to make as much money as possible and stuff the customers (sub standard parts to save a few pennies/cents), it was decided that a 5 cube unit fulfilled their promise of 3TH and all the extra ones go their farm.
Think about it 3,600 units sold, 1 cube from each is 2,376,000 GH completely free for them.
S3s are .74 btc each. 7 of those run you 5.18 btc. If you got a refund a bit back and used that 10Gs you could buy 20 of those at the current price of $650_btc. That's over 9.5T without OC. Hodor
I also doubt the original design of Neptune was meant to have 5 chips, like maybe it WAS supposed to be like Jupiter, and the chips were a bit slower than planned.
I think that is 100% obvious in view of the fact that the original pictures showed a four chip design (same as Jup). When they found out how crappy the chip would actually perform, they went to the five-cube scheme. The real shame is, without waiting at all you can achieve 3.3TH with 7 Antminer S3 for only 6.75BTC. I paid 18 BTC for my Neptune and I am still hanging on for delivery after MONTHS of waiting. KnC fucked it all up. They ought to make good on this fiasco for their loyal customers. A free Neppy in September isn't going to help catch up to where we ought to be. KnC left their customers to drown in the shit this time. The only way this works out for KnC is if they become a 'pure mining' entity from here on. No hardware customers ever again.
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