[Work in progess] Burnins Avalon Chip to mining board service

[ewibit]

If you already have everything in place, I doubt you need the water blocks. But if you ask me, that means that I am going to buy a 7mh/s increase for 15€ per board with additional costs of about 200€ per 10-16 boards.

Im not sure that is worth it.

how big (and valuable) is the difference of the noise?

[Schrankwand]

If you already have everything in place, I doubt you need the water blocks. But if you ask me, that means that I am going to buy a 7mh/s increase for 15€ per board with additional costs of about 200€ per 10-16 boards.

Im not sure that is worth it.

how big (and valuable) is the difference of the noise?

I can't tell, since I don't know what kind of fans you need.

If we were talking the sound of my Gigabyte 7970 vs watercooling : Watercooling all the way.

If I can use Akasa 120mm silent fans to get the cooling I want: Fuck that.

[fiktionist]

iam pretty sure, if you would raise the voltage to 1,35v (which should not really be a problem at 110nm) and keep it cool on water 450mhz must be reachable

[menace_one]

iam pretty sure, if you would raise the voltage to 1,35v (which should not really be a problem at 110nm) and keep it cool on water 450mhz must be reachable

yes probably no problem for 110nm chips, but I'm not sure about the voltage regulators.

Covers the Waterblock also the VRs? On GPUs is that very important.

[nemercry]

434 - 57, 31, 1.28V, 82W, 4% hw errors means 434 Mhz - 17.36Mhz(434*0.04Hwerrors) = 416.64 Mhz (actual usable speed with WC)
434 - 57, 52, 1.28, 82W, 10% hw errors means 434 - 43(434*0.1Hwerrors) = 390.6 Mhz(actual usable speed with AC)

And that means, the choice here is between:

434 - 57, 31, 1.28V, 82W, 4% hw errors means 434 Mhz - 17.36Mhz(434*0.04Hwerrors) = 416.64 Mhz

and 409 - 56.5, 51, 1.28, 77W, stable


If you already have everything in place, I doubt you need the water blocks. But if you ask me, that means that I am going to buy a 7mh/s increase for 15€ per board with additional costs of about 200€ per 10-16 boards.

Im not sure that is worth it.

Lets see what happens if burnin highers the voltage. As you can see in the AC chart, there are volt settings which cause much more errors, than a little higher on. And while the AC cooling still is on its limit. WC could still be able to manage the 250 with little less, no or the same amount of hw errors than the 434 stage. Due that the board is much cooler than with AC.

For example:
409 - 55, 48.5, 1.25, 2% errors
409 - 56.5, 51, 1.28, 77W, stable
on AC

Could be the same as
434 - 57, 31, 1.28V, 82W, 4% hw errors
(MAYBE, not a real value!)450 - 57, 31, 1.3V, 82W, 0% hw errors

It could be possible because the board itself is significantly colder than with ac. In this case it should be a good roi for the difference in hashrate.(But to be honest its more a thought than a real expectation = ])

[SebastianJu]

@burnin... I believe Klondikes can only be highervolted with changes on the board. For example other parts soldered in. Is it different with your design? Easily doable without soldering?

And can you tell what fans are used so i know what quality they are, air volume per hour and so on...

What do you think about BKKCoins problems with noise that leads to higher error rates. Do you expect that he will get similar results when he suppressed the noise with ferrite beads?

[cimpex]

maybe there is a small temp. difference inside the avalon chip at the IC between AC and WC -> same surface temps but different performance. if an IC is working at his limit just a few degree will matter.

[robix]

@burnin

When you launch your shop, I think it would be wise to disable the order button in the beginning for a certain time (1 or 2 days), so that all the guys can have a look at the offering, the different items and how to combine them. That would prevent possible wrong orders done in a hectic rush and also the trouble you would have to correct the orders. When questions arise you can answer them in advance.

Just my thoughts.

[SebastianJu]

@burnin

When you launch your shop, I think it would be wise to disable the order button in the beginning for a certain time (1 or 2 days), so that all the guys can have a look at the offering, the different items and how to combine them. That would prevent possible wrong orders done in a hectic rush and also the trouble you would have to correct the orders. When questions arise you can answer them in advance.

Just my thoughts.

Thats a great idea since burnin already stated that he will give out a warning about the opening of the shop 24 hours before. When he opens the shop with buying disabled everyone has 24h to calculate and maybe even prepare the basket.

[Micky25]

^ +1

[dani]

Anyone thought about a suitable PSU? I'm looking around for a cheap 80+Gold single rail PSU that can handle 700-1000 Watt  (will use two of them), any recommendations? I don't care about noise, I'd buy a turbine if it's cheap and efficient. I'll make sure that the load never exceeds 70%, so any brandmark should do.
Single rail is obviously the best for me because I cannot mess up anything

[Tursk]

Anyone thought about a suitable PSU? I'm looking around for a cheap 80+Gold single rail PSU that can handle 700-1000 Watt  (will use two of them), any recommendations? I don't care about noise, I'd buy a turbine if it's cheap and efficient. I'll make sure that the load never exceeds 70%, so any brandmark should do.
Single rail is obviously the best for me because I cannot mess up anything

I bought Corsair AX760 to power up my six upcoming Bitburner XXs. 80plus Platinum, modular cabling, 6x6pin PCI-E etc. It isn't cheap, but has right amount of PCI-E connectors. 92% power efficiency keeps it cool and electricity bill is at least a little smaller than with 80plus Gold PSU.

http://www.corsair.com/en/power-supply-units/ax-series-power-supply-units/ax760-atx-power-supply-760-watt-80-plus-platinum-certified-fully-modular-psu.html

[SebastianJu]

Anyone thought about a suitable PSU? I'm looking around for a cheap 80+Gold single rail PSU that can handle 700-1000 Watt  (will use two of them), any recommendations? I don't care about noise, I'd buy a turbine if it's cheap and efficient. I'll make sure that the load never exceeds 70%, so any brandmark should do.
Single rail is obviously the best for me because I cannot mess up anything

Where to see the power efficiency?

I got one of these for cheap at ebay: Link but they are expensive to buy them from the store. Someone suggested this with 8 x 12V channels: Link but its similarly expensive.

I checked amazon and the reviews there and found that maybe this is a cheap alternative: Link

Its cheaper when taking 2 or more of them and they have good reviews. I wonder if one would need y-cables or are the boards powered from the neighbour board?

And i thought about buying this: Link With this i should be able to turn of and on all my miners over the internet when they are far away in a datacentre. In case the raspi hangs or similar things.

[ecliptic]

What are payment option(s) for assembly?

[ecliptic]

iam pretty sure, if you would raise the voltage to 1,35v (which should not really be a problem at 110nm) and keep it cool on water 450mhz must be reachable

yes probably no problem for 110nm chips, but I'm not sure about the voltage regulators.

Covers the Waterblock also the VRs? On GPUs is that very important.

Buck converters have no problem doing something like 0.8 to 6v at full load current.  Just duty cycle on FETs change.. or diode if not a synch buck

[guitar82]

Anyone thought about a suitable PSU? I'm looking around for a cheap 80+Gold single rail PSU that can handle 700-1000 Watt  (will use two of them), any recommendations? I don't care about noise, I'd buy a turbine if it's cheap and efficient. I'll make sure that the load never exceeds 70%, so any brandmark should do.
Single rail is obviously the best for me because I cannot mess up anything

I bought Corsair AX760 to power up my six upcoming Bitburner XXs. 80plus Platinum, modular cabling, 6x6pin PCI-E etc. It isn't cheap, but has right amount of PCI-E connectors. 92% power efficiency keeps it cool and electricity bill is at least a little smaller than with 80plus Gold PSU.

http://www.corsair.com/en/power-supply-units/ax-series-power-supply-units/ax760-atx-power-supply-760-watt-80-plus-platinum-certified-fully-modular-psu.html

Didn't Burnin say you could power 3 boards with one 6 pin adapter? With overclocking I think it would only be two now, but that is what I thought. I am not sure how they wire though.

[Tursk]

Didn't Burnin say you could power 3 boards with one 6 pin adapter? With overclocking I think it would only be two now, but that is what I thought. I am not sure how they wire though.

I think it was two boards, but that was before overclocking fever took over

Officially one 6-pin PCI-E connector has 75W power output, which burnin already exceeded with higher clock rates. I guess he wasn't using single PCI-E connector though.

[SebastianJu]

With overclocking the chance of a broken asic will rise most probably. So when a chip breaks BKKCoins made the klondikes so that the other chips remain working. Is it still so that a 10 chip bank will stop working with your design burnin? I mean its probably not an easy task to find a replace the broken chip.

[AMD FTW]

Didn't Burnin say you could power 3 boards with one 6 pin adapter? With overclocking I think it would only be two now, but that is what I thought. I am not sure how they wire though.

I think it was two boards, but that was before overclocking fever took over

Officially one 6-pin PCI-E connector has 75W power output, which burnin already exceeded with higher clock rates. I guess he wasn't using single PCI-E connector though.

That's the rated spec of a 6 pin pci-e power connector, it can and will output more wattage. An 8 pin pci-e connector is rated for 150 watts and the only difference between a 6 pin and 8 pin is the addition of 2 more grounds to the connector.

[tigerbit]

Didn't Burnin say you could power 3 boards with one 6 pin adapter? With overclocking I think it would only be two now, but that is what I thought. I am not sure how they wire though.

I think it was two boards, but that was before overclocking fever took over

Officially one 6-pin PCI-E connector has 75W power output, which burnin already exceeded with higher clock rates. I guess he wasn't using single PCI-E connector though.

That's the rated spec of a 6 pin pci-e power connector, it can and will output more wattage. An 8 pin pci-e connector is rated for 150 watts and the only difference between a 6 pin and 8 pin is the addition of 2 more grounds to the connector.

Yes but even after making a splitter for x1 8pin to x2 6 pin that's still going to present a power distribution problem. 12 boards 1000W modular psu, I'd need six PCIe8 leads onto the PSU to stay legit.  Would it be worth looking at x2 smaller PSUs? Kinda redundancy - degraded service.