Quote from: nullama on May 03, 2022, 11:55:51 PM

Quote from: Wikiz on May 01, 2022, 07:53:59 AM

~snip~
Thats awesome dude, about replacing the official psu, any 80+ 400-700w would be more than enough yup, but how will u tunning the parameters? The % power (up to 100%) and the second one?

I ended up getting a 750W PSU which doesn't even run a fan until 300W, so my PSU is now completely silent. Game changer for silent mining with this device.

To tune the parameters first decide what you're after, for example the noise level of the fans you want to tolerate, or a specific hash rate you want to achieve. I've managed to get up to about 4TH/s for a few minutes but the noise of the fan and the heat produced was absurd. Personally I think this device is perfect for efficient silent mining at home instead of trying to get a massive hash rate with loud noise and heat.

The fans will stabilize at their running speed in a few seconds, or couple of minutes of running. The hash rate will oscillate a bit more, so you might want to wait a bit longer to see the actual hash rate. Running it overnight should give you a nice stable hashrate reading.

Here are the relevant options and their ranges:

Quote from: start_apollo.sh

# board power - this controls power/voltage for the board in %. It ranges from 30-95. See presets and tuning guide below
# board frequency - this controls the hashboard's frequency. It ranges from 30-60

I would start first with the board power(brd_ocp) and set it to a level with acceptable fan noise. Once that's done, note the current hashrate. Then experiment with different board frequencies(osc) and see how it performs.

As a reference, here are the values of the presets:

Quote from: start_apollo.sh

# Preset Values:
# ECO: -brd_ocp 48 -osc 30
# BALANCED: -brd_ocp 60 -osc 40
# TURBO: -brd_ocp 75 -osc 50

For an absolutely silent mining operation (fan running at 1k RPM or so, basically inaudible compared to the quiet 2k RPM or so of ECO) set brd_ocp and osc to 30. You'll get about 1.3TH/s with no noise. If you want to go higher and keep the noise down, you can add more external fans running at very low RPMs. I'm in the process of designing this solution.

Here's the "official" tuning guide from the Apollo binaries documentation(start_apollo.sh file):

Quote from: start_apollo.sh

# Tuning Guide:
#
# The above three modes should be more than enough for most use cases, and it is not recommended to edit these unless you are an expert user and know what you are doing.
# It is normal for your hashboard to have up to 5% error rate, this is usually due to one bad chip producing lots of errors and won't affect your overall hashrate.
# The easiest way to tune your board is to simply increase or decrease the power %. If you see over 5% errors, simply start incrementing the -brd_ocp parameter 1-2 units at a time
# If you are seeing very low error rate (under 1%), you can start decreasing the power parameter to increase efficiency
# The software already has per-chip auto-tuning built in, so you should not need to touch the -osc frequency parameter, but you can play with this as well to determine the sweet spot for your board
# As mentioned above, the max power for standard unit with the included PSU is 75% (200 watts), do not go past this unless you have

Thank you

Im currently running it 'turbo' mode and power off by night, but now if I manage to run it at 1.3 with no noise, man thats awesome, thanks