Water cooling? Mineral oil? Just wrap the blades in applewood smoked bacon and enjoy a slower but tastier Avalon! 
Mmmm...nom, nom, nom.
Topic: Avalon stable @ 98,986Mhash/sec - page 2. (Read 12781 times)
Mmmm...nom, nom, nom.
Water cooling? Mineral oil? Just wrap the blades in applewood smoked bacon and enjoy a slower but tastier Avalon!
Has anyone verified that 98GH/s is stable 24/7?
I think the highest people have gotten stable with stock B2 is 350MHz ~ 84GH/s on 3 module system.
98GH/s on a 3module system is ~410MHz which I don't think anyone has been stable on.
98GH/s on a 4 module system is ~310MHz which should be fine.
I don't believe that MagicMike523 has stated in this thread what frequency the chips are running at or how many modules.
My guess is that the 98GH/s is lucky variance with a 3 module running at 375MH/s ~90GH/s with some lucky stability and lots of cooling.
Has anyone verified that 98GH/s is stable 24/7?
Is there enough spacing between the modules to put gpu ram sinks on each individual chip? I have about 2 kg of them, yes kilograms 
Infact just checked how much the bag of them weigh, it was close to 4 kilograms so I should have plenty for 1x3 module avalon once I get it.
Infact just checked how much the bag of them weigh, it was close to 4 kilograms so I should have plenty for 1x3 module avalon once I get it.
Have anyone tried to completely submerge Avalon into mineral oil? That works very well for desktop computers.
Fluid would be too viscous for the fanz...
I wonder if there is a water block out there that would fit...
100GH/s with good cooling, might be worthwhile.
https://bitcointalksearch.org/topic/avalon-water-cooling-211825
Congratulations
What happens if you replace the original paste with Artic Silver 5 or other similar compounds such as high quality thermal pads?
AS5 is conductive, if it flows back to the chip through those small tunnels, who knows what will happen. MX4 is non-conductive and also cheaper if you want to apply for all 240 chips (a 20g tube is enough)
What happens if you replace the original paste with Artic Silver 5 or other similar compounds such as high quality thermal pads?
AS5 is conductive, if it flows back to the chip through those small tunnels, who knows what will happen. MX4 is non-conductive and also cheaper if you want to apply for all 240 chips (a 20g tube is enough)
What happens if you replace the original paste with Artic Silver 5 or other similar compounds such as high quality thermal pads?
I am testing this and I am seeing only a very small increase. Maybe 1 Ghs/s when temp 3 is dropped from the low 50's to low 40's C.
Unit with A/C
1h 37m 58s 83896.29 temp3 43 freq(auto) 354
Unit without A/C
6h 54m 22s 83111.32 temp3 53 freq(auto) 353
Unit with A/C
1h 37m 58s 83896.29 temp3 43 freq(auto) 354
Unit without A/C
6h 54m 22s 83111.32 temp3 53 freq(auto) 353
You're forgetting to overclock when running the AC
Batch 2. Active cooling + overclock. Each tweak I apply bumps the GHash.
Now I'm shooting for 100Ghash/sec. Who is with me?
I'd love to join you, but I don't got anything to shoot with!
was wondering how long it'd take people to notice ( and more importantly share the constant that we've released on github.)
the number you are all aiming for is 450 of course, that's not really possible on just air cooling.
the number you are all aiming for is 450
of course, that's not really possible on just air cooling.Do you think that the batch 1 design power distribution can manage the increased power draw at those speeds?
This is a concern, normally for overclock you need strong power supply module, not just only a large PSU. Someone already burnt one of the hash submodule even under 282Mhz, but that could be caused by a bad component. Anyway, I found out that hash rate tends to jump between 50Gh and 100+Gh wildly when heavily overclocked (350Mhz), not a good sign
Have anyone tried to completely submerge Avalon into mineral oil? That works very well for desktop computers.
Fluid would be too viscous for the fanz...
I've got a system that's submerged in mineral oil (quad E5-4650). Transformer oil to be specific (lower viscosity, higher flash temps, mostly synthetic, no PBAs). Fans don't really care, although that's not the primary circulation method (pump).
Nice. I've been wanting to do this to a computer for a while (I think my i7-2700k would over-clock like a MoFo.)
I'm pretty sure I'll be trying this with my K16 boards. Where did you source the mineral oil, if you don't mind me asking? Also, what type of container are you using? I've seen debates on using a plexiglass enclosure, and possible ill effects on it from the mineral oil.
Thanks
This is definitely a game changer if they run stable at that rate.
*lol* 450MHz... and with such "old" technique. I calculated KNCMiner to be half the price (including vat) per GH instead using avalon chips + assembly. Now with this overclocking the advantage of KNCMiner is gone, taking into account the longer months until the miner can be received. BFL is fully out of the game and the their credits are worth nothing. And since the GH of bitfury is similar to kncminer its the same there like with kncminer.
Of course it has to be shown whats the overclocking capability of bfl, bitfury or kncminer chips. But its a bit funny that the old technique is nearly as good as the new one. Probably there is a reason why avalon and bitcountain chose to take the old techniques first.
Of course it has to be shown whats the overclocking capability of bfl, bitfury or kncminer chips. But its a bit funny that the old technique is nearly as good as the new one. Probably there is a reason why avalon and bitcountain chose to take the old techniques first.
Have anyone tried to completely submerge Avalon into mineral oil? That works very well for desktop computers.
Fluid would be too viscous for the fanz...
I've got a system that's submerged in mineral oil (quad E5-4650). Transformer oil to be specific (lower viscosity, higher flash temps, mostly synthetic, no PBAs). Fans don't really care, although that's not the primary circulation method (pump).
How did you overclock it in the first place?
Thanks,...
Thanks,...
Have anyone tried to completely submerge Avalon into mineral oil? That works very well for desktop computers.
Cyanide idea
was wondering how long it'd take people to notice ( and more importantly share the constant that we've released on github.)
the number you are all aiming for is 450 of course, that's not really possible on just air cooling.
the number you are all aiming for is 450
of course, that's not really possible on just air cooling.You are a clever, clever man.
What is the limit when we approach these speeds, the chips, the boards, the power delivery (ignore PSU) or the cooling?
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