@@PcoakaloidTHANK YOU! It's something to do with the polyvinyl chloride surface and the way the typically red surface reflects away those slower photons.
@@JeffGeerling Wait. Are you saying that that isn't how it's supposed to work? I can recall several times removing an AM4 CPU cooler, and I can recall never, ever, seeing a CPU in the socket after I've done it.
@@JeffGeerling I would do a sumersion cooling using novatech 7000 chilled down as low as you can get it you could probably get 3.5 cooling all the board below freezing since its a small board you don't need much fluid
@@JeffGeerling Just imagine what this video would have been like if Red Shirt was in charge... Headline: smoking crater in suburban St Louis office park...
I’m reminded of that overclocking episode of Futurama where Bender just keeps on increasing his power draw and cooling needs. EDIT: In one episode it seems that he has a “6502” processor.
and then it exploded that tends to happen with extreme overclocks on cpu's push them hard enough and far enough and Boom they blow like any chip pushed to far
Congratulations on the record :) For your next attempt, you could try feeding power directly to the pi, if possible. It might be current limited due to the width of the traces from the connectors to the chip. I do not know if the traces are somewhat accessible near the chip, I do not own a RPi5. Also consider downvolting as you increase frequency and/or reduce the GPU power (if possible) to give more power to the CPU part. In a (recent past) GamersNexus video with AMD, they talk about a frequency/voltage/power sweet spot that may require the voltage to be reduced to increase frequency. Overclock to infinity... and beyond :D
HATs off to you, Jeff! Even if it's not practical, seeing the Pi pushed to its limits gets me incredibly Amped. It's really cool all the options we have for actively dissipating heat these days, and you gotta love that, thanks to the modifiable firmware, no performance goal is too Pi in the sky.
Hey Jeff! I recently found your channel and your content is great. I have binge a good chunk of your content in the past week. You are a great guy and your passion for raspberry is outstanding lol. Keep it up!
"so i pulled out my next trick. [I'm 'bout to reach in my bag]" the houdini refference in the captions is funny lol!! also very good video! i want to try overclocking my pi 2 now, but not to this extent
You can also massively improve stability by just cooling it down even further. Power consumption goes down and they run more efficiently at lower temperatures and as a result you get way more performance without increasing voltage.
Pushing the envelope of what's possible and seeing exactly how a thing breaks can tell you a lot about what your'e testing. I wouldn't call it worth it since I am pretty sure the pi foundation does even more insanity to test units, but still fun to showcase pushing the limits.
Seems the suggestion I made last time wasn't needed in the end. For context: On the Pi day video I suggested hardware modding the Raspberry Pi in order to completely bypass the firmware and set the voltage manually.
You can also disable all clock monitors and readouts, that way the register where that info is stored is not being read out, no clockcycles wasted and you could get higher scores. And incase that os the register thats leading to the lock ups, it can improve stability
You are one of the few, if not the only person that can make me watch a video that explains that I will void my warranty by following it, and still, I watch the whole thing. You are magical.
I achieved a full 20% overclock on an Athlon 64 using air cooling alone. It was apretty big cooler with plenty of heat pipes and a nice big fan but the fan was pretty quiet. The chip was rock solid. Best OC chip I ever had.
That was actually the first route I was going to try... but it's a bit more annoying on the Pi just due to the size and how few people mess with the hardware. A lot easier to damage something that way too.
@@JeffGeerling Yea, with SoCs getting more integrated and smaller, doing stuff like shunt mods and even soldering (for me) has been really hard. Speaking about soldering, sometimes I wish there's this chinese eWaste recycling firm that instead of recycling laptop CPUs and reballing them into desktop PCs, they could reball mobile SoCs like Snapdragons into a Single Board Computer/Compute Module or something instead.
The reason the CPU gets unstable even at 50 degrees but running high frequencies is due to timing violations. You see, in the CPU, data travels from one register to another, this has to be precisely synced with the clock. There is a very small window of time where data has to be transferred. When you increase the clock this window gets even smaller. Now the logic inside the chip adds to its own delay. Overall, we get a timing violation and meta-stability issues in the logic circuits and viola, your chips gets into a lockup.
Heh there's usually a reason the clocks are picked-though in Intel's case, the reason is usually "how can we get our benchmark one tick higher than the competition" rather than "how can we be somewhat energy efficient?"
Yeah, unlike most other 'hacks', this one can and will break Pis if people don't know what they're doing. A lot of people will just go for the moon on the first shot, and risk burning things up. You have to do it slowly, monitoring temps and voltages, and have a quick power shutoff, plus in the most extreme case, a fire extinguisher handy :)
There are sellers on eBay with stock of these older wafers; they're often used for educational purposes, they are from the 70s or 80s (old enough you can use a microscope and see the whole layout!).
If you understand which voltages are which, you could over clock the ram/increase cpu dram voltages to match both. The cpu drams's volts and the ram on the pi's volts could help with a more stable and overall faster overclock. On top of that if you hardware mod and make your own power board, maybe from pcbway. You could in theory replace the power delivery system for the pi with your own board attach an actual psu and push that chip further.
You should solder a capacitor over the + and - on the power plug side. A lot of the errors are because of peak power draws causing under voltage. A capacitor will buffer the voltage fluctuation.
Jeff, you should make a small oil tank fill it with transformer oil. That will significantly reduce temperatures and improve performance. I was using that solution for cryptomining and in most cases it's bit all performance from Web data.
I recommend you take a big piece of copper or iron , throw it in the freezer and apply that directly to the decided cpu. It's not gonna stay cold for ever but at least 30 minutes so you can run the pi against the wall.
It's funny I've never tried overclocking a Raspberry Pi before. I first overclocked in the 486 era and haven't run a chip at stock settings on a desktop setup since 1996. I guess I have a goal now when I'm bored. 😂
Honestly I didn't think about how the CO2 in dry ice would make its own little gas layer when it comes into contact with the heat spreader-it would be very inefficient cooling directly because of that!
My first attempt at over clocking was on an old core 2 duo I ended up burning out the north bridge (back when they wernt integrated into the cpu) An the computer still runs, with a slight 5% oc but it overheats the north bridge under heavy loads an shuts down
Modern Pi's have a much better onboard power section. Older ones it definitely helped to use a solid 5.25v supply with heavy wires via the GPIO. Not so sure it makes a difference on the current ones. Not extreme, but look at the uptime of this old Pi B running at 1ghz (default is 700mhz, but it does down clock to 700mhz unless loaded). It's using GPIO supplied power. Last line is the uptime: $ cat /proc/cpuinfo ; uptime processor : 0 model name : ARMv6-compatible processor rev 7 (v6l) BogoMIPS : 797.66 Features : half thumb fastmult vfp edsp java tls CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xb76 CPU revision : 7 Hardware : BCM2835 Revision : 000e Serial : 0000000... Model : Raspberry Pi Model B Rev 2 19:40:21 up 372 days, 5:17, 2 users, load average: 0.00, 0.01, 0.00 It is monitoring temperature and humidity, sunrise and sunset, and controlling a few "smart" devices at a remote location. It sends the environmental data out via ssh to my server while also allowing a tunnel back in. It's been very reliable doing this over 10 years now. The only hardware failure was a power supply. Even the SD card has been solid.
If you push it with CPU + GPU, or if you have USB peripherals plugged in that pull a lot of power, you can get to 15-20W even on a Pi that's not overclocked.
Raspberry pi being unstable at 1.18 volts meanwhile intel running at 1.4-1.5 V seem peculiar. Are these different type of voltage readings ? is intel just build different ?
intelcis suffering a case of panic where the competition using glue is cleaning the floor with them, keep in mind that it was not 1.5, it went over 1.6 volts on intel cpus, in fact, it is going, the microcode update is not here yet and people do not have that information intel is not built different, this is what you do when you decide that 300 watts for just the cpu is fine
Afaik there isn't a published datasheet for the BCM2712 SoC on the Pi 5. However for reference, for similar SoCs with the same ARM A76 CPU cores nominal core voltage is usually 0.75V maximum recommend 1.05V and absolute maximum 1.1V so percentage vise that's a pretty major increase. The ARM cores lower core voltage tolerances compared to x86 CPUs are likely just a side effect of them being designed for low power and high efficiency.
Hey Jeff, long time follower here. I was looking for what the best way to contact you is and couldn't find it so dropping this comment here. I'd love to see you test some of the Raspberry Pi UPS hats out there. I'm super interested in using a Raspberry Pi (be it a zero or all the way up to a 5) as a home power monitoring device of sorts and always been curious how well these small hats work and whether they're worth it vs using a traditional UPS.
RPi calls it a 'heat spreader'-it has some thermal epoxy holding it onto the flipped silicon chip, so it does a good job pulling off heat, but loses a little efficiency compared to direct die.
An alternative way to fry a Pi if it survives the extreme overclocking; dip it in batter, then drop it in a pot or pan of hot oil, cook until golden brown, and serve with ranch. Mmmmmm, crunchy! 😋
I've noticed this on some of your previous videos too, but there are parts of the video, for just a second or 2, where the framerate drops and it's actually noticeable. Maybe a camera issue? Not sure if anyone else noticed?
The shortage has been over for months-the local Micro Center in St. Louis has more than 25 in stock (and have since April), and rpilocator shows stock at nearly every store they track (and have for a few months as well): rpilocator.com/?cat=PI5
@JeffGeerling I had a quick look and they're quite cheap for such a high quality. I might buy one and see if I can get it to work with a raspberry pi! Cheers for the quick reply 👍 👌
Im curious what is the max wattage of the PSU that you are using. would it be possible to run it off a different power supply that can do 30 to 40w. You did mention 20w many times during the testing for from wall.
RGB actually makes a difference when you use it to watch out for dust. 😂 Dust accumulates in the front filters and the worst case I had was when it made a difference of 10ºC.
I think there is a hard voltage limit of 1.1 V due to the PMIC they have used, so even with the hacked rPI FW you will only be getting 1.1 V max. You can SET a higher voltage, but if you check how much the core is actually seeing on the rail it is still 1.1 V. You would need to Epower it to get more voltage.
Ahh a challenge I can actually get behind. Maybe I will try this. This sounds like a fun little project. I think delidding and using a custom ln2 pot would be insane bahahaha.
Not sure the best way to get a hold of you. I was wondering if you could use say a Pi5 8GB and make a dedicated server like DayZ? You can make a dedicated game server on just about any old PC so why not on a Pi? Just think 6 or so Dedicated Game Servers running in a rack?