But I think those 38mm thick server grade fans are designed to last for years of continuous operation
how do you (I) recognize that a fan is a server grade fan and of high quality and life period?TIA
Topic: Clocked Avalon to 350 MHz and beyond/ 80GH/s (Read 3490 times)
TIA
A water cooling block has been created by a member on this very site...
That would be me... unfortunately I have to waste my time with a thing called "employment" at the moment. Also this other thing called "family" keeps me from finally pimping my Avalon.
Soon. Hopefully.
https://bitcointalksearch.org/topic/avalon-water-cooling-211825
PS: How do you know that 325MHz, 350MHz, and 375MHz are possible at all?
I am not sure, just plain assumption. There is possibly a clock divider and clock multiplier values associated with those registers, and it would be good it reverse engineer it, to check if higher than 300MHz performance is feasible.ckolivas has tested it (see https://bitcointalksearch.org/topic/m.2540290), you can run at higher frequencies, although at some point the error rate grows too high so that effective hash rate goes down.
You should be able to replace the "if cascade" with two simple lines as shown here: https://bitcointalksearch.org/topic/m.2540247
However, whether a given frequency actually works would probably depend on additional factors.
Onkel Paul
But I think those 38mm thick server grade fans are designed to last for years of continuous operation
how do you (I) recognize that a fan is a server grade fan and of high quality and life period?TIA
very nice!
Question for Goxed, re: "Fans seem to run at 100% regardless of temperature."
Do you have any indication of what would likely happen if (eventually when) a fan fails? will the device turn off before it fries itself?
The "regardless of temperature" part makes me wonder/worry that some kind of built-in failsafe might have been disabled in order to run at these speeds...
Still freakin' awesome
worst case, if you were really paranoid, you could replace the fans every 3 months or so much like a preventative maintenance schedule
Question for Goxed, re: "Fans seem to run at 100% regardless of temperature."
Do you have any indication of what would likely happen if (eventually when) a fan fails? will the device turn off before it fries itself?
The "regardless of temperature" part makes me wonder/worry that some kind of built-in failsafe might have been disabled in order to run at these speeds...
Still freakin' awesome
worst case, if you were really paranoid, you could replace the fans every 3 months or so much like a preventative maintenance schedule
You can have several fans to reduce the risk
I added 2 exhaust fans and one external turbo blow fan towards the bottom of the box, if one of the internal fan fails, the external fan could still cool the bottom plate to avoid overheating. But I think those 38mm thick server grade fans are designed to last for years of continuous operation
Bang tidy, If only I had my Avalons...
This is going to be a long weekend!
This is going to be a long weekend!
Does anyone have a link on how to do this?
very nice!
Question for Goxed, re: "Fans seem to run at 100% regardless of temperature."
Do you have any indication of what would likely happen if (eventually when) a fan fails? will the device turn off before it fries itself?
The "regardless of temperature" part makes me wonder/worry that some kind of built-in failsafe might have been disabled in order to run at these speeds...
Still freakin' awesome
worst case, if you were really paranoid, you could replace the fans every 3 months or so much like a preventative maintenance schedule
Question for Goxed, re: "Fans seem to run at 100% regardless of temperature."
Do you have any indication of what would likely happen if (eventually when) a fan fails? will the device turn off before it fries itself?
The "regardless of temperature" part makes me wonder/worry that some kind of built-in failsafe might have been disabled in order to run at these speeds...
Still freakin' awesome
worst case, if you were really paranoid, you could replace the fans every 3 months or so much like a preventative maintenance schedule
how stable at 350? Running for a week without a hard reboot stable or hard reboot every 24 hours stable?
Strombom has been running for close to a month now
how stable at 350? Running for a week without a hard reboot stable or hard reboot every 24 hours stable?
In another thread, I'm running mine stable at 350...
This is great news. As you have already indicated, it should be great to have as a new TP-link firmware update. 
Would anyone be so nice and compile bfgminer for windows with this settings in the driver-avalon.c file?
Quote
if (frequency == 256) {
buf[6] = 0x03;
buf[7] = 0x08;
} else if (frequency == 270) {
buf[6] = 0x73;
buf[7] = 0x08;
} else if (frequency == 282) {
buf[6] = 0xd3;
buf[7] = 0x08;
} else if (frequency == 300) {
buf[6] = 0x63;
buf[7] = 0x09;
} else if (frequency == 325) {
buf[6] = 0x2b;
buf[7] = 0x0a;
} else if (frequency == 350) {
buf[6] = 0xf3;
buf[7] = 0x0a;
} else if (frequency == 375) {
buf[6] = 0xbb;
buf[7] = 0x0b;
buf[6] = 0x03;
buf[7] = 0x08;
} else if (frequency == 270) {
buf[6] = 0x73;
buf[7] = 0x08;
} else if (frequency == 282) {
buf[6] = 0xd3;
buf[7] = 0x08;
} else if (frequency == 300) {
buf[6] = 0x63;
buf[7] = 0x09;
} else if (frequency == 325) {
buf[6] = 0x2b;
buf[7] = 0x0a;
} else if (frequency == 350) {
buf[6] = 0xf3;
buf[7] = 0x0a;
} else if (frequency == 375) {
buf[6] = 0xbb;
buf[7] = 0x0b;
how easy is it to upgrade the avalons with a 4th module? does this create extra heat? doe it require a better PSU needed?
Batch 1 Avalon modules are so close together that the communication cables are pinched.Bitaxe.ca rep suggested that I file down the heat sink were the cable gets pinched.
Batch 1 has room for a 4th module.
Batch 2 Avalon's had a airflow modification in the spot that would have the 4th module. However this enabled them to have the modules spaced apart a little more and the data cable is further towards the center of the module.
how easy is it to upgrade the avalons with a 4th module? does this create extra heat? doe it require a better PSU needed?
In another thread, I'm running mine stable at 350...
A water cooling block has been created by a member on this very site...
Good Question
It is possible for sure here is the evidence
https://bitcointalksearch.org/topic/m.2478266
I am wandering how burnin made them work at 125 for testing
https://bitcointalksearch.org/topic/m.2536501
PS: How do you know that 325MHz, 350MHz, and 375MHz are possible at all?
It is possible for sure here is the evidence
https://bitcointalksearch.org/topic/m.2478266
I am wandering how burnin made them work at 125 for testing
https://bitcointalksearch.org/topic/m.2536501
PS: How do you know that 325MHz, 350MHz, and 375MHz are possible at all?
I am quite interested in your results as well goxed. Yifu hinted that the chips can clock much higher. It may need additional cooling once the chips pass a certain clock.
good work mrb,
this is what we wanted to see in the beginning.
hint hint: the chip has a much higher clock cap.
this is what we wanted to see in the beginning.
hint hint: the chip has a much higher clock cap.
Question: what should be buf[6] and buf[7] for 325MHz, 350MHz, and 375MHz?
if (frequency == 256) {
buf[6] = 0x03;
buf[7] = 0x08;
} else if (frequency == 270) {
buf[6] = 0x73;
buf[7] = 0x08;
} else if (frequency == 282) {
buf[6] = 0xd3;
buf[7] = 0x08;
} else if (frequency == 300) {
buf[6] = 0x63;
buf[7] = 0x09;
}
if (frequency == 256) {
buf[6] = 0x03;
buf[7] = 0x08;
} else if (frequency == 270) {
buf[6] = 0x73;
buf[7] = 0x08;
} else if (frequency == 282) {
buf[6] = 0xd3;
buf[7] = 0x08;
} else if (frequency == 300) {
buf[6] = 0x63;
buf[7] = 0x09;
}
Use these at your own risk!
For 325 MHz: buf[6] = 0x2b and buf[7] = 0x0a
For 350 MHz: buf[6] = 0xf3 and buf[7] = 0x0a
For 375 MHz: buf[6] = 0xbb and buf[7] = 0x0b
The meaning of these values is documented on page 6 of the Avalon ASIC (A3256-Q48) datasheet.
And pls make sure to replace stock PSU first
Because magic smoke can come out
Apart of the joke i am interested how it will go I will watch this tread closely. If someone has made it i will be glad to see that info shred here
Question: what should be buf[6] and buf[7] for 325MHz, 350MHz, and 375MHz?
if (frequency == 256) {
buf[6] = 0x03;
buf[7] = 0x08;
} else if (frequency == 270) {
buf[6] = 0x73;
buf[7] = 0x08;
} else if (frequency == 282) {
buf[6] = 0xd3;
buf[7] = 0x08;
} else if (frequency == 300) {
buf[6] = 0x63;
buf[7] = 0x09;
}
if (frequency == 256) {
buf[6] = 0x03;
buf[7] = 0x08;
} else if (frequency == 270) {
buf[6] = 0x73;
buf[7] = 0x08;
} else if (frequency == 282) {
buf[6] = 0xd3;
buf[7] = 0x08;
} else if (frequency == 300) {
buf[6] = 0x63;
buf[7] = 0x09;
}
Use these at your own risk!
For 325 MHz: buf[6] = 0x2b and buf[7] = 0x0a
For 350 MHz: buf[6] = 0xf3 and buf[7] = 0x0a
For 375 MHz: buf[6] = 0xbb and buf[7] = 0x0b
The meaning of these values is documented on page 6 of the Avalon ASIC (A3256-Q48) datasheet.
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