Thanks.

RoboNuggie I haven't tried the freezer but I did try using and old beer fridge putting the Pi inside and insulating the gap for the wires to come out , it made very little difference about 3°c all in all so just put beer back in the fridge and called it a day

lol, brilliant Mark...a win-win situation really: Pi = Cooler --> Drink Beer (shame to let it warm up) Pi= Not much cooler ---> Put back in fridge, drink beer later... Huzzah!

i would just dual sided thermal tape to put directly the big heat sink on the rpi. with noctua fan. would be perfect.

RoboNuggie So damn cool.. Am a software guy (CS) how can I start learning to program FPGS and use VHDL ... do I need to learn anything else before that .... Can I get into Arduino immediately without taking other courses

RoboNuggie hahaha or sent it to space 😁🤣

And I did adapt an aluminum heat sink! I was surprised at how hot it gets while doing unattended upgrades just after booting Ubuntu Mate. I wish there was a way to attach a picture.

Nice idea -- noted for a future video if I can figure out how to control ambient.

If the server room is ”hot” then something isn’t right. Server rooms needs some kind of cooling installed, blowing around warm air doesnt’t do very much. But if by server room you mean a room at home where you keep a server that’s another thing :)

For a lot of digital electronics, engineers usually assume that the temperature rise (delta T) you see above your current ambient temp will apply at higher operating temps as well, within reason. So if you see a 15 degree rise in your system when ambient is 25C, you can be pretty confident you'll see the same 15C rise if ambient is at 50C, assuming your system is designed with reasonable airflow, all the parts are still in there listed operating range, and you don't have local hot spots likely to cause thermal runaway. This assumption works well 95% of time. Measured temps are usually within a couple of degrees of where you would expect them to be, and that difference may be due to slight changes in the test setup and the accuracy of the thermocouples. That doesn't absolve the engineers from testing the circuits at the top of their listed temperature range to insure an unexpected problem doesn't crop up. If you're building a power amplifier with large discrete transistors however, much of the power may be dissipated in individual devices. Bipolar transistors tend to increase gain with increasing temperature (which increases power), and you could risk a thermal runaway problem. As such, the constant delta T assumption should be checked more carefully.

Cynthia is right, measuring the ambient temperature is enough to express a delta over ambient temperature. A lot of publications use the Delta T to compare cooling solutions rather than the measured absolute temperature.

That will happen!

Hypetrain is rolling

Please try a peltier 😀

I'm testing it with a 115W TDP Cooler that is supposed to cool i7s and Ryzens this weekend, to kick off the blog I'm launching after that. Try googling "Raspberry Pi 4 Arctic Freezer" mid August. Going to hook up a Pi with an SSD, an Arctic Freezer 7 Pro, Noctua NF-B9 and Thermal Grizzly Kryonaut paste, then bench the temps with and without overclocking in hardware hungry Retropie games like Perfect Dark (N64), Shen Mue (Dreamcast) or Monster Hunter Freedom (PSP).

@@ExplainingComputers now the 8 GB!!

Nice

Thanks. Look out for the follow-up using a Pi 4B -- today! :)

And a great observation -- I wish I had spotted that in the video!

Thanks! xD

Thanks for your kind feedback.

I am glad not to be the only one here trying these kinds of things! :)

Thanks for this. I will return to the Devastator Robot project fairly soon.

Ah, I missed that one. Would indeed be interesting to try given the heat spreader on the Pi 3 B+.

It's perfectly possible to keep a NAS or web server 24/7 as-is, with no cooling at all... Trust me, the SD card will be the thing that dies sooner.

@Julius Songling Ναι!

Welcome aboard! :)

It is a very good question, and I think an error on my behalf with the smaller fan. :(

ExplainingComputers sorry I was just curious. My Pi case's instructions showed the fan blowing air away from the CPU but I set it up to blow on the CPU, so I wasn't sure if there was some CPU cooling secret I wasn't privy to.

if you have an open air design, i find it better for your fan to blow on the heat sink and if you have a closed case design, for it to pull air off of it. in the end though, the difference is marginal - you're still using the fan to promote airflow and the main difference is where you're going to get dust buildup over time. You should check out PC building airflow videos for explanations on that.

josh blowing away may be more effective, blowing down on a heatsink is known to be inefficient because air will hit the flat bottom of the heatsink. Always make air move across a heatsink so the airflow is unopstructed

not that you'd want to but could you re-run the cheaper fan again I'm curious as to how that'll play out against the noctua

the noctua fan is probably quieter too, they're extremely good fans.

rickster4k Yeah! Noctua stuff works great. If only they'd offer better color choices...

Of course a noctua fan works.

Hey 1974 color schemes can't be beat!

they do offer better colour choices...

The copper came from Amazon; I searched for "3mm copper plate", and managed to get a piece 50x50mm. Searching today on Amazon I first found a 100x50mm piece; amzn.to/2rUkwG8 But there may well be smaller bits. I looked at this in more depth -- cutting it and such -- in this video: ukposts.info/have/v-deo/aXGKe6SubYOop4E.html

Thanks for that. (A Mr Scissors fan.)

i would just dual sided thermal tape to put directly the big heat sink on the rpi. with noctua fan. would be perfect.

I did not notice an issue, but did not explicitly experiment with the WiFi to find issues. Good point.

The NESPi case has mounting for a 30mm fan as I used here.

ExplainingComputers think I'll have to invest in one! Poor Pi, has to work quite hard running emulators.

Knuckles the Echidn

Knuckles the Echidna Dude, add a fan. My Nespi with heat sinks and 30mm fan runs around 47 c. Even under load. If noctua made a 30 mm fan, I’d be using one. The pifan is a usable fix. A bit loud and needs proper mounting, otherwise it will vibrate and sound like a weed whacker. Also get a copper heatsink for the bottom chip.

In both cases the fan was not directly over the CPU -- in part due to mounting practicalities, but also to avoid the death zone as you note.

Ok, out of curiosity have you considered something like this: www.amazon.co.uk/Enzotech-Corp-MOS-C10-MOSFET-heatsink/dp/B004CL89D8/ref=sr_1_22?ie=UTF8&qid=1526824983&sr=8-22&keywords=small+heatsink+copper Or even go wild and try to fit this: www.amazon.co.uk/SVF152C29M-Processor-Heatsink-Cooler-3VHK9TMN010/dp/B07D5MW85P/ref=sr_1_30?ie=UTF8&qid=1526824983&sr=8-30&keywords=small+heatsink+copper

Cooling to ambient is always possible. There is the one caveat that comes with that: WHY?

For Science, you monster. :) Also, why not? :P Yeah, yeah, I know.. just because you can, doesn't mean you should. So, let Christopher do it for you and learn something along the way? ;) Even if it turns out that there isn't much difference, its always good to see what is needed to keep it steady at a certain temperature. You know, for that "temperature sensitive" application that includes expensive crystals that throw out accuracy if it rises 0.1°C. Or not. It's academic at this point.

As an experienced overclocker, I do have to admit "just for the hell of it" is indeed a compelling argument. as for unstable crystals, well, a TCXO doesn't cost too much, or if you have access to good surplus an OCXO, or if you have a few extra bucks, Rubidium is cheap enough too ;) --... ...-- -.. . -.- -.-. ..... ...- -.. .---

I like Counter Strike also!

Thanks. :)

Overclocking makes a HUGE difference when you're using kodi, from stuttering 1080p30 h.265, to no stuttering at all.

Saxon , I like how you think

True.

They don't care about anything that costs less than a gtx 1080.

People have done this already, it's not worth it, it's actually worse than a fan and a heatsink lol you can really only pull a .2ghz more out of it, so really what's the point? lol

@@bobbybologna3029 i hope the foundation next gen pi will not come with factory locked processor.

@@minepro1206 unless it's droppable.

Bobby Bologna actually water cooling PCs works better than fans

Thanks. :)

Such holes would be so good!

No freaking space

Uhm, now I wonder if I can get some on Amazon! :)

ExplainingComputers that would be awesome!! ;)

It would make very little difference in an open rig like this -- probably none! :)

Maybe even more effective as it'll be drawing air through the heatsink and pushing it away ! @@ExplainingComputers

Fair point.

Frankenstein's monster toward the end haha !

I don't know of any microprocesor at works at anything close to 100 °C! :) Somewhere between 70 and 85 most chips will cease to function, or experience a very short life span.

All Intel cpus run up to around 100 degrees, the 4700MQ for instance thermal throttle at 99 degrees (C). Almost all modern laptops and Macbooks run at this temp under load. Somewhere from 85-99.

My i5 3380m Works at 102°C Without a Problem. It throttles at 105°C.

I've never actually seen a CPU fail in years of answering questions on broken PCs. The worst I've heard was a 8350 that was such a bad bin it had to be underclocked to be stable (and was RMAed at that point).

Toxy , Great to know that you think running a Chip at 100 Degrees is a " good " idea. ❌ Bad Choice though , unless you Don't like your computer

True.

With fish? You certainly wouldn't need a heater!

Thanks! Stay happy! :)

Try overclockimg sdcard.

I did that. 100.25 mhz. The sd card READER. Yeah, it now performs full speed.

30G Put a heatsink on the RAM, take it to 700 Mhz. Also you can overvolt the CPU to get better OC.