710 Watt is measured at the wall (plug/input). PSU has about 80% efficiency which means that 4 Modules will consume about 757W (710*0.8/3*4) at OUTPUT. PSU is rated what it can supply in OUTPUT not what it consumes in input. If you measure 4 modules at Input (plug) you will see that they will consume about 757 +0.2*757 = 908W
So once again 850W rated PSU is fine
Just to be on safe side check what is max Amparage that 12V rail can provide. It has to be greater than 757/12=63Amps. Most modern PSU's will do that. Having 1000W psu with weak 12V rail < 63AMPS (just an example) will cause magic smoke to come out
In short watch PSU Output Wats + !!!!!12v Rail AMPS!!!!!
The AX860 is a 80+ platinum rated psu what means it has an efficiency of over 90% (94% @50% load and still 91% on 100% load) @ 230V (115V is a little worse) check it out: http://www.plugloadsolutions.com/80PlusPowerSupplies.aspx#So the estamined 950 @wall will be about 860 Watt output and thats exactly the limit  I think Corsair is a good psu so it might have some reserve BUT I wont run a psu 24/7 at its limit! When I calculate the output 710*0.92 = 653 output /3*4 I'll get 870 Watt with 4 modules maybe it would work for a while but its very risky or will you loshia give a guarantee for your YES promise??? Dude, I am not able to promise you anything. i missed the fact that the measurement is with gold PSu at 115V. What i think is that: Al PSu suppliers lie and or efficiency drops when psu load is > 85%. So let us make a bargin and count it has 85% efficiency. Have in mind that you have at least 10% additional loss by converting 12V to 1.2V right? So calculation is almost same. However i do recommend to chose as powerful as you can afford with at least 75A - 12V Best |
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When I calculate the output 710*0.92 = 653 output /3*4 I'll get 870 Watt with 4 modules
maybe it would work for a while but its very risky
I wouldn't be comfortable with this setup either, but to be fair you forgot to note that there's probably 30 to 50W used to power the rest of the system (fans, controller, mips board, hub, ...) so it's probably still within the PSU specs. DNS died so i was not able to finish my post  About Fans + other things they get calculated already. What i forgot to write is that psu should be single 12V rail capable to provide at least 63A+10%-15% reserve or to be driven at 85% load=70AMps+ 860i is rated at 71A so it should be fine. However 75A+ would be the one i will choose So that is pretty much all of it |
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can i run 4 modules in one avalon with a 860 platinum corsair?
yes overclocked? YES sure? my Corsair AX860 is pulling 710 Watt @ the wall when running 3 Modules with 350Mhz so 4 Modules would be aprox 950 Watt!? 300MHz is fine with 595 Watt thanks for that info  fhh, 710 Watt is measured at the wall (plug/input). PSU has about 80% efficiency which means that 4 Modules will consume about 757W (710*0.8/3*4) at OUTPUT. PSU is rated what it can supply in OUTPUT not what it consumes in input. If you measure 4 modules at Input (plug) you will see that they will consume about 757 +0.2*757 = 908W So once again 850W rated PSU is fine Just to be on safe side check what is max Amparage that 12V rail can provide. It has to be greater than 757/12=63Amps. Most modern PSU's will do that. Having 1000W psu with weak 12V rail < 63AMPS (just an example) will cause magic smoke to come out In short watch PSU Output Wats + !!!!!12v Rail AMPS!!!!! |
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can i run 4 modules in one avalon with a 860 platinum corsair?
yes overclocked? YES |
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What is this? A block with 0 work?
243093 2013-06-24 12:16 0m 0 19,339,258 0.0% 0.000 BTC hellerstern66 119 left
Wondering on that one myself. I'm also still wondering about this. How can a block be mined with zero shares submitted to the pool? The rounding probably kicks in As we all know we need at least one share for sure  |
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350 and pretty cool without airco   (1 fan on max rpm) With pretty cool ambient temps also I guess your room temperature is about 15 Celsius? |
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Today it is 2 years since the launch of Bitminter
Happy birthday ! +1 congrats! +1 |
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Can some of the people who have already been delivered, by DHL, please say what the first place is that shows on the tracking?
It should be either China somewhere, or Hong Kong.... it really makes a huge difference for me and so any information from you lucky guys would be great, thank in advance.
Give me 20 minutes and I'll post the info for you. organofcorti , Pls state if your delivery address is EU/US also. I called DHL yesterday asked if there is something for me from HK (batch one unit passed HK) but nothing Thank you |
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I paid the tradein in feb02 and got the units already. The website seems to be up again, can't wait for the price, is it going to be 1500$ less 299$ = 12 bitcoins? Dream on dude Now seriously. Guy's please do report if/when your trade-in will show up in the store. Some infio for my orders: 1. I do have 1 batch2 order paid in full as guest. Confirmation mails from both Walletbit and Avalon store has been received. Store account created and thicket opened 10 days ago. Regular batch 2 order is not showing at avalon store yet. 2. One Lancelot delivered for trade-in - aiming to pay for the second unit - Nothing in store yet also Thank you |
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The overclocking blew out my power supply. My "silver" unit had an Antec Green 650W power supply. I ran to the store and they had a Corsair 800W and I got it working again.
It was expected dude |
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That was i was missing. You suggest exhaust fan to lower the pressure right? What about pressure itself does it correlate to cooling? I mean higher pressure=better cooling?
If that is the case i will just switch blue fan of. I have noticed that intake temp raised "suddenly" with 3 degrees which is false of course i am measuring constantly with other tools:) Which proves the fact that a hot air hits tem sensor just below blue fan. In other words when pwm fans are operating in max it is completely useless. Is that true
PS: buy the way restarts may come from your script how often do you run it? Do you lose network connectivity. And finally i think cgminer needs at least 2 mins to consider pool is dead. So if your primary pool dies restart (cgminer monitor may restart it).
Pressure is decided by the fan speed, while the air flow affect the cooling effect For example, you block all the exists, then there will be maximum pressue in the case but worst cooling effect. Cooling effect is decided by how quick you can move the air through the case. On a radiator, a push and draw configuration always works better than single fan configuration My script always check every 3 minutes, but when I was running 0225 firmware and 300Mhz, machine can be up and running for more than 1 month and cgminer restarts every 1-5 days. So I'm not sure it is a firmware issue or a clock rate issue Thank you for the update:-) About restarts - pls try to figure out if they are related to poll issues About fans I am planning to remove blue fan. Fill the fan hole to avoid air out and install two additional fans to suck hot air out. What do you think about it? |
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I just think the blue fan is a bit shit........all three of my batch one blue fans could run a bit better
In the beginning at max PWM speed i thought that blue fan is sucking air from the unit instead of blowing cold air from outside. I put a lighter near by two PWM fans and i clearly can see the light going against the avalon. When lighter was close to blue one it was the opposite and lite was off..That is why i thought shit the fan is sucking.. And this may be due to air turbulence inside and that can make fan stop also as reported. I have to try same with smoke Something is wrong with blue fan. I will change it these days Do you have exhaust fan installed at exit? I added two fans, one normal speed fan and a PWM fan, so that when 2 main fans spin too fast, the PWM fan will accelerate accordingly to reduce the pressure in the case, otherwise with high air pressure generated by those 130+ CFM fans running at maximum, every exist including the blue fan will just have airflow outwards By the way, 350 seems quite unstable for me, I had 3-4 cgminer restarts in one night (temp3 around 41c degree), and now I lowered it to 325  10X johnyj ! That was i was missing. You suggest exhaust fan to lower the pressure right? What about pressure itself does it correlate to cooling? I mean higher pressure=better cooling? If that is the case i will just switch blue fan of. I have noticed that intake temp raised "suddenly" with 3 degrees which is false of course i am measuring constantly with other tools:) Which proves the fact that a hot air hits tem sensor just below blue fan. In other words when pwm fans are operating in max it is completely useless. Is that true PS: buy the way restarts may come from your script how often do you run it? Do you lose network connectivity. And finally i think cgminer needs at least 2 mins to consider pool is dead. So if your primary pool dies restart (cgminer monitor may restart it). |
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16.06Gbps DDoS attack.
Let's see what Black Lotus can do.
Doc, Are attacks coming from same ip's Network. If yes just fuck um and filter them from core routers if possible. Some miners will not able to mine probably but you will keep the pool. Are the attacks coming from well known place? 16.06Gbps seems pretty high and is hard to make it happen from random Ip's changing on each attack |
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I just think the blue fan is a bit shit........all three of my batch one blue fans could run a bit better
In the beginning at max PWM speed i thought that blue fan is sucking air from the unit instead of blowing cold air from outside. I put a lighter near by two PWM fans and i clearly can see the light going against the avalon. When lighter was close to blue one it was the opposite and lite was off..That is why i thought shit the fan is sucking.. And this may be due to air turbulence inside and that can make fan stop also as reported. I have to try same with smoke Something is wrong with blue fan. I will change it these days |
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So I thought I'd make it easy for everyone to try the latest cgminer 3.3.0 and overclock settings all rolled into one, so here is a firmware with the overclock settings settable from the web interface: http://ck.kolivas.org/apps/cgminer/avalon/20130624/openwrt-ar71xx-generic-tl-wr703n-v1-squashfs-factory.binNote that I have donation settings in the configuration so if you do not use your own config settings, it will start mining for me until you change them. Usual warnings apply with aggressive overclocking: do so at your own risk! Enjoy tried running the modded firmware on my btach 1's just to see if running the fanz on MAX(not above 300mhz) would make the units cooler/more efficient...... the fan with the blue light just jams when i try this though, it obviously has issues with going at max speed About the jammed fan - exactly like mine. I think two other fans a blowing to hard and something with airflow inside the unit is not right and there is air making resistance to blue fan |
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I don't think there is any misunderstanding.
You have rightly DEFENDED BKKCoins against my "aggressive" asking of question.
I don't need to know specifics as most of his posts regarding watts were off the cuff and calculated using what info he had that is why I quoted.
I think you are simply getting a little too defensive considering all I am asking is what would be the cut off line on this decision to go with a change in BOM or not. He put the 3 possibilities up for discussion. I am responding with when do you think you would be able to make that decision? 1 week 2 weeks?
Seriously I have been supporting BKKCoins where ever I can so I think asking a question like this is fair for everyone concerned. Might want to just relax a bit no one is demanding he answer... this isn't an Avalon thread or BFL thread... we all know he is working extremely hard and we all appreciate the effort. The thread is here to ask questions and get information. Sorry if you don't like the question being asked right now.
Peace |
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I was asking for future REFERENCE.
It is a fair question to ask at this point as many are in the fish or cut bait boat right now so a little heads up on the timing of the decision be nice? 1 week 2 weeks?
As he has planned to do the overclock TESTS... see the git hub read me I don't think this is too much of burden.
Given we have a potential of 450 Mh/s top end on the chips this is not something we can let twist in the wind for too long it is a critical decision so time frame on it be nice.
The potential for me is 375 extreme 400 MAX. I want to max it out but i am not ready to pay the price and see magic smoke out there. Let us be realistic about overclocking and cost of the board at 450 it may turn out the we need about 3A per chip = Heat, componets + cooling - too much for a starter project I am sure that BKK will comment all of it but let us leave him work. There will be other chips, probably second version of K1 (K16) and so on. In the end it is all open source - You are free to redesign ( change components) and do whatever you want with it. The reasonable overclocking goal at this stage is 350 in my oppinion. That is buy the design from avalon to be aircoled with heatsinks Not so hard to answer right? Now we will see if he has time or not on timeline. Again it has to be asked. If he has no time that is fine. Not trying to slow the process trying to calm the waters for many out there who have already invested a lot of time and money into this. I ask for everyone for me I have confidence in whatever the solution he comes up with is I have faith and will be using his board no matter which direction it takes. Dude, Ask burnin to measure the chips consumption at 350 and post the result here. You will have pretty quick response from BKK. There will be absolutely no reference available before it. I am leaving this. My English is not native as you can see but i think we are misunderstanding each other |
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I was asking for future REFERENCE.
It is a fair question to ask at this point as many are in the fish or cut bait boat right now so a little heads up on the timing of the decision be nice? 1 week 2 weeks?
As he has planned to do the overclock TESTS... see the git hub read me I don't think this is too much of burden.
Given we have a potential of 450 Mh/s top end on the chips this is not something we can let twist in the wind for too long it is a critical decision so time frame on it be nice.
The potential for me is 375 extreme 400 MAX. I want to max it out but i am not ready to pay the price and see magic smoke out there. Let us be realistic about overclocking and cost of the board at 450 it may turn out the we need about 3A per chip = Heat, componets + cooling - too much for a starter project I am sure that BKK will comment all of it but let us leave him work. There will be other chips, probably second version of K1 (K16) and so on. In the end it is all open source - You are free to redesign ( change components) and do whatever you want with it. The reasonable overclocking goal at this stage is 350 in my opinion. That is by design from avalon to be aircoled with heat sinks at HOME. Think ABOUT ROI also - I am sure that "imaginary" board can do 450 but at what price? What we need is a compromise and timing. The chips are coming in a week or two First things will need to be done first. Agreed? |
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What are your thoughts regarding powering the bricks? One big PSU or individual ones for each klego (pain to power up...)?
A K16 will use around 32W, so a K64 will need about 128W each (with 4 leads). They're designed to take a PCIe 6 pin connector much like a GPU. I would guess that you could run a K64 off each PCIe lead from the PSU with splitters to feed each of the 4 sections. I haven't gone to check the specs but they would handle something like that. I wouldn't have a problem running 4x K64 off my 600W supply. I used to run 3 GPUs at 500W without any issues. I'd say you're better off going that route than using crappy low wattage power adapters for each board, or section of board. Like with GPUs stick with solid reliable PSU units like Corsair, preferably high efficiency Gold (90%) rated. With overclocking potentials and the small change in the BOM that can allow for it on the K16 what would the watts for K16 and K64 be with this minor change? K16 = 38.4W ? K64 = 153.6W? When do you think you will decide on this change / no change? https://bitcointalk.org/index.php?topic=242423.msg2572272#msg2572272was 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.
`Yifu G. | Avalon ASIC Reference Design Release Dude, As I said we have to leave it for now. Before that can happen some other stuff should happen 1. Make the board Hash (K1 or K16) whatever is up to BKK 2. Make it hash stable at 350 3. MEASURE ACTUAL CHIP POWER CONSUMPTION at 350 4. DECIDE WHAT TO DO AFTER WE HAVE THE !!REAL!! NUMBER IN AMPS Excuse my caps but please do not waste BKK time with that issue. I am regretting that i bring it up at this stage thank you for the understanding Best |
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Con,
What about Avalon cutoff temp? Will you do it?
Maybe, but what should it be? 80? 90? Should it restart when it gets cooler? Should it be on by default? Should it be user configurable? Will the device respond to a request when it gets that hot and the fpga stuffs up anyway? Does it have any internal throttling of its own? 1. What should it be? The best option will be to be configurable - --avalon-cutoff=60 degress 2. when temp is > 60 just to put it in idle with fans set to max. Let fans keep max state when unit is idle due to cutoff condition 3. What to do when it gets cooler - I think it shall stay in idle because there were problem with heat and that problem needs interaction - as i said air condition malfunction for instance. If you want to make everyone happy =avalon-cutoff-autoresart=0/1 and avalon-cutoff-autorestart-temp=40 (cooler to 40) it is getting complicated so in the beginning i suggest it stay OFF forever because of the above arguments. 10X |
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