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A startup’s cooling chip may surge processor power

allaboutcircuits.com

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Re: A startup’s cooling chip may surge processor power

#51

Post by bayindirh »

dontlaugh wrote: post #44
patentatt wrote: post #8

Earlier quoted context omitted.

I feel like these are not as common/popular as they were back in the day. Now it's all water cooling with those all-in-one setups. I always thought the Peltier coolers were cool (pun not originally intended, but now it is).

Sadly they’re extremely inefficient when compared to radiators and fans, whether directly on the heat source or across a water loop.

In the olden days of Pentium 3 (or Pentium!!! if you prefer), one guy graphed his Peltier element's performance vs. voltage and found a 115% efficient point (with assistance of his fan, ofc.)

Limiting voltage and coupling it with a very efficient cooler for its time, he overclocked his CPU a great deal.

Looked for the article, but it's possibly gone down with the downfall of old internet, because it was a personal webpage.

Re: A startup’s cooling chip may surge processor power

#52

Post by crote »

sanjayio wrote: post #11
danuker wrote: post #3

Earlier quoted context omitted.

If you are interested in cooling, I suggest that you replace your thermal paste. In my research I have found that the thermal paste is, paradoxically, the least thermally conducting part of a PC heat pipeline. So, use as little of it as possible, to avoid adding thickness. Or use one made of a metal alloy: https://www.youtube.com/watch?v=hdTsra-uLBI

If this is true, why not have coolers built into the CPU? Like a block of metal attached? Is it a small improvement gained? Or manufacturing nightmare?

You could mount the cooler directly on top of the die with the Athlon XP. Turns out people kept damaging the CPU, hence the switch back to heatspreaders.

Permanently attaching a cooler to the CPU itself doesn't really seem like a viable option to me. Mounting it to the motherboard would be a nightmare, and you'd end up creating a one-size-fits-nobody cooling solution. Nobody would be happy with the cooler you end up choosing.

In reality, cooling paste really isn't that big of a deal.

Re: A startup’s cooling chip may surge processor power

#53

Post by corv »

nigerianbrince wrote: post #15
danuker wrote: post #3

Earlier quoted context omitted.

If you are interested in cooling, I suggest that you replace your thermal paste. In my research I have found that the thermal paste is, paradoxically, the least thermally conducting part of a PC heat pipeline. So, use as little of it as possible, to avoid adding thickness. Or use one made of a metal alloy: https://www.youtube.com/watch?v=hdTsra-uLBI

Doesn't extra paste just squeeze out the sides?

It squeezes out and potentially causes a short-circuit as some pastes are electrically conductive.

Re: A startup’s cooling chip may surge processor power

#54

Post by guerrilla »

zozbot234 wrote: post #45
patentatt wrote: post #8

Earlier quoted context omitted.

I feel like these are not as common/popular as they were back in the day. Now it's all water cooling with those all-in-one setups. I always thought the Peltier coolers were cool (pun not originally intended, but now it is).

The real issue with Peltier junctions is that unless you shed the heat away from the "hot" side very effectively, the "cold" side will heat up even faster. That makes them kind of a non-starter.

See, I don't understand why there aren't strange shaped Peltier cells in order to increase the surface area on the hot side vs. cool side. Then it might be worth it...

Re: A startup’s cooling chip may surge processor power

#55

Post by qikInNdOutReply »

bayindirh wrote: post #50
xxs wrote: post #43

Earlier quoted context omitted.

The air is full with fats that will penetrate any filter, and long term build up there... With the extra heat contributing to the issue. Personally I don't think it can work in an open loop system.

Maybe it will come with a sticker saying "spray inlets with alcohol periodically".

..unexplained fires are a matter for the courts.. coolandnarrow.. coolandnarrow..

Re: A startup’s cooling chip may surge processor power

#56

Post by kcb »

danuker wrote: post #3
ddejohn wrote: post #2

> The AirJet datasheets report a power dissipation of 5.25 W and 10.5 W using the AirJet Mini and Pro, respectively. Ah, beans. Was hoping for something more applicable to desktop processors. Neat idea though. Edit: I missed the callout about laptops and tablets as I was skimming.

If you are interested in cooling, I suggest that you replace your thermal paste. In my research I have found that the thermal paste is, paradoxically, the least thermally conducting part of a PC heat pipeline. So, use as little of it as possible, to avoid adding thickness. Or use one made of a metal alloy: https://www.youtube.com/watch?v=hdTsra-uLBI

> So, use as little of it as possible, to avoid adding thickness.

Don't do this. Far far worse than having too much thermal paste is having too little. Assuming you are using non-conductive paste(which most these days are), be liberal with the thermal paste. As long as you stay within reason it pretty much doesn't matter thermally how excessive you apply, especially when applying on a heat spreader.

Re: A startup’s cooling chip may surge processor power

#57

Post by kcb »

corv wrote: post #53
nigerianbrince wrote: post #15

Earlier quoted context omitted.

Doesn't extra paste just squeeze out the sides?

It squeezes out and potentially causes a short-circuit as some pastes are electrically conductive.

Very few modern thermal pastes are conductive.

Re: A startup’s cooling chip may surge processor power

#58

Post by camtarn »

crote wrote: post #52
sanjayio wrote: post #11

Earlier quoted context omitted.

If this is true, why not have coolers built into the CPU? Like a block of metal attached? Is it a small improvement gained? Or manufacturing nightmare?

You could mount the cooler directly on top of the die with the Athlon XP. Turns out people kept damaging the CPU, hence the switch back to heatspreaders. Permanently attaching a cooler to the CPU itself doesn't really seem like a viable option to me. Mounting it to the motherboard would be a nightmare, and you'd end up creating a one-size-fits-nobody cooling solution. Nobody would be happy with the cooler you end up…

Oof, I remember how terrifying it was to mount one of those Athlon coolers, having heard so many stories about chipping the CPU or cracking a corner off.
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