Did you buy directly from GekkoScience, or from a reseller? If so, which one?

The R909 may have the same case size but the overall design is changed considerably from the R606 to get rid of a lot of the reliability issues that one had. R606 production was straight-up stopped while there was still demand because they just had too many problems, too high failure rate despite multiple revisions.

R909 has better power handling, better cooling, heck it's even got better solder. The biggest problem so far is heatsink screws coming loose during transit but assembly procedures had already been changed by the third reported case.

Does push-pull really matter in a system without much flow constriction? My understanding was that helped maintain airflow in an environment with lots of obstruction, like close-packed heatsink fins, but the R909 is pretty open.

It's 96% of expected speed, so not that impressive. Yours is running a little over 80% expected. I bet you could see the same 2.3TH effective from about 600.

We've recently gotten a few reports of screws rattling loose during shipping and anything that's gone out since then has blue threadlocker on the screws. There's already a version change in planning to improve heatsink screws and ease of getting the case on and off.

It's not advisable to use thermal compound on the top chips or we would have done so. The IC package is plated and electrically connected to local ground, which means that unless there's electrical insulation between the package and heatsink, you can cause shorts and break stuff. We use a 0.5mm 20W/k silicone pad to avoid shorts.

I'll do some testing with adding TIM to the underside heatsink and see how that changes heat management.

2.3+T  on the pods, nice.

They're factory calibrated to 4.6V which isn't always the same position on the knob due to part tolerances in the volt-setting circuit. If it'll run at speed from a lower voltage, there's no reason not to.

Probably. We haven't manufactured new NewPacs since about the middle of 2021, before the Compac F came out.

It's going to depend somewhat on the speed you run them at, but users here have reported up to 14 sticks to a Pi.

Mine with 6 good chips is sitting at 2.4T flat at 600MHz, blue knob about 1 o'clock, pulling 104 watts DC with a stock fan and pretty low HW. My old laptop craps the latency timer at any higher MHz but if I can get the Pi back running I'm gonna try to beat that record.

R909 seem to be a bit particular about power, yeah. The fairly cheap brick on my linux laptop is noisy and I had to replace it before it'd detect the R909 over USB. Sometimes it'd load up and work for a few seconds then drop out again, but most of the time it just doesn't work. I ended up in a pinch just using a second lab PSU for the laptop, just like the one powering my test R909, and it's been running beautifully at 600MHz for the last day on that setup.

Didnt have the problem on a Pi controller, because it was running off the same clean power source as the pod. Low quality power for either the pod or controller could cause ground loop noise issues that throw off the USB signal voltages and make for a poor connection.

Is that a 2.26TH average speed from the R909? Nice. The fastest I've pushed one stable was 2.1TH so, you know, cool.

Yep. Just like with the R606, I didn't put fan speed control on here because the fan's quiet enough even at full speed to be pretty unintrusive, so why bother with less than full speed if there's probably going to be a heat/efficiency penalty?

Eyeboot is reputable, has been an authorized reseller for years and will take good care of you if there's issues.

If the hub's got power and the jack isn't messed up, could be something went wrong that torched the noise filter resistor (that functions as a fuse). Did you buy from a reputable seller?

Poonasor, what's your cooling setup like?

Weird. Have you plugged it into anything besides that hub to see if the red light kicks on?

How solid is the USB jack? What's the version number in the bottom corner?

Tiny knob in the corner, same as all other Gekko sticks. Slight clockwise turn.

Ticket value confirmed message is a leftover from some early testing. Just means we understood the format of the ticket mask register assignment correctly when we reverse-engineered the protocol.

If it's running slow, best bet is probably pull it, adjust the voltage up a little, and plug it back in.

The 808 was our first pod miner, with 8xBM1384 chips, from five or six years ago. We only made about 300 of 'em.

Nope