Did you ever find out the issue?   or are the sticks dead?

I see the chart with the mhz, gh/s, and watts. It doesn't have amps though.  But I guess if i take 300mhz = 6.795w / 5v = 1.359a

My hub has 2.1a per port, x 5v = 10.5w. Based on the chart, I'm guessing 10.5w would be around 490mhz. That would explain why 1 or 2 sticks start lagging behind when I run them at 500mhz.

Sorry, I'm new to all this, but I'm starting to get the hang of it.
Thanks!

I saw this chart in the compac F thread.  Is there something similar for the Newpacs? (maybe not as high) Im trying to figure out how many amps for each frequency.  I think im maxing out my hub.
Thanks

https://i.ibb.co/0sJZkbV/CF.jpg

I gotcha. no worries. Im def not complaining. These Ferraris are awesome!

Since i got the Gekko hub I ramped them up (incrementally) to 550mhz.  3 were getting about 360ghs, and 1 was at 340.  Which is still amazing.

and I did dial back the volt screw. but then it only got up to 520mhz.  so i turned back up a bit, but not as much as I had before.  its back to 550mhz,  and 340ghs.  So it's all good.

If only I could find more gekko hubs, Id buy some more. There is a guy in Germany selling 2 hubs on Ebay for like 1500 Euros ($1700) +$160 shipping.  I offered him $500, and he told me to go F myself  ¯\_ (ツ)_/¯   hopefully there in stock again soon.

Im running 4 sticks, and no matter what mhz, 1 always lags behind.   At first i thought it was the bitcoin merch hub, so i upgraded to the gekko hub.  On the new hub I can run them higher, they all run faster, but 1 is still lagging behind the others

I adjusted the volt screw 45 degrees twice.  they all came stock in this postion |
so i adjusted clockwise and is now in this position _

Im timid to keep adjusting. So my question is how much should the volt screw be adjusted?

sidenote:  when the 4 sticks were delivered,   3 were in one package and have consecutive serial numbers.  the laggy one was separate and has a different serial number.  Could it just be it was manufactured differently, and the silicone just responds differently than the other 3,  and i should be happy with what i get?

Thanks

Gotcha, thats still sounds pretty sweet.  What's your hashrate if i may ask?

 [/quote]PSA for others wanting to scale up on the Pi platform, while the CPU usage is low there appears to be a limit of around 12 devices on the USB 3 ports (including any hubs you have).  So I'll have to run 2 Pi4 units to take advantage of the power savings vs. trying to run so many of these on windows (which uses tons of power / cpu and generates heat).
[/quote]

is that 12 devices per port? or 12 for both ports?

PSA for others wanting to scale up on the Pi platform, while the CPU usage is low there appears to be a limit of around 12 devices on the USB 3 ports (including any hubs you have).  So I'll have to run 2 Pi4 units to take advantage of the power savings vs. trying to run so many of these on windows (which uses tons of power / cpu and generates heat).
[/quote]

is that 12 per port?  or 12 between the 2 ports?

gotcha, ya i think im def getting the gekko hub.   it says it gets 6amps for each of the bottom 3 pairs, or 3amp per port.  If you only run 1 stick in each pair, will you get 6amps?  I was reading on here that if you have 5amps of power,  you can max these sticks out to 800mhz, 550 gh/s. So this hub would be great unless it maxes out at 3amps.  either way, 3amps is better than almost every other hub out there.

Ive got the bitcoin merch usb hub which is also 2.1a per port
https://www.amazon.com/dp/B08X7FFQ3N?psc=1&ref=ppx_yo2_dt_b_product_details

Im only running 4 compac f's. If you dont use all of the ports, does that mean you get extra amperage in the ports youre using?

right now, im running at 400mhz, and fluctuating between 260-310 gh/s.  I feel like i can push it a little further. Ive got the 3d printed fans on each one,  AND 2 artic fans.  I dont feel any heat coming off them at all.
https://scontent-lhr8-1.xx.fbcdn.net/v/t39.30808-6/265937106_438640691255563_9206342502357925262_n.jpg?_nc_cat=109&ccb=1-5&_nc_sid=730e14&_nc_ohc=FzFKy1svfXwAX8mwH_9&_nc_ht=scontent-lhr8-1.xx&oh=00_AT-2uPFHBAOKq9jsWO54S-doTROSfi7n3Q0VUID0bgZ0WA&oe=61BA5481

What do you all think? Should I push them farther?  How do you know how fast you can take them?  I dont wanna fry em out. or should I just wait and get the gekko science hub?

BTW, thanks for all the great info here!  my first post.  Only been into btc less than a year,  and I just began learning about mining.