ah.

> You're thinking of the peltier coolers

ah. probably, I can't recall names worth a damn

The real difference is cars and Amazon did the things they were replacing better than the original. What does the meta verse do better?

Who bands perfume?

You’re so confidently wrong it’s painful

Like Billy Gates stole the mouse from IBM

I can't wait for the meta implosion! Good riddance to the poison he has been pushing!

If only the companies who spend (and make) billions designing and producing CPUs realized that we would like more efficient CPUs!

Didn't GE have a similar solution?

It's not the efficiency, but a different architecture. The main issue is that, all software made on windows wouldn't be compatible if you change the CPU architecture.

Yeah, all CPUs use the X86 architecture. Or more modern versions that are backward compatible.

Apple's M1 and newer CPUs are not using X86, instead they use the same architecture as our smartphones. Which is more energy efficient, but costs more to produce if you want the same computing power.

It's not going to happen, and why is a fundamental aspect of why AMD64 (x86) is different to ARMv7/v8/v9.

ARM gets parallelism at the instruction level (ILP), it has small instructions, very suited for out of order execution. A single thread can get a lot of parallelism, so the CPU doesn't need a lot of overhead to wrestle the ILP bear. The ease at which ARM (and some other RISC archs, like POWER) gets ILP is part of the reason why mandated parallelism in things like VLIW and EPIC didn't do very well: It just wasn't necessary.

AMD64 is very different, it has all that x86 baggage on it. Instructions have all kinds of modes, dependencies, tags, etc., and this makes them a lot more interdependent than ARM instructions are. So, pulling ILP out of AMD64 is a lot more difficult than ARM, and the CPU has to spend a lot more resource in doing it. Even then, it doesn't get the same degree of ILP ARM can achieve.

AMD64 gets more of its parallelism from TLP: Thread level parallelism. There's a reason all performance AMD64 processors from AMD and Intel support simultaneous multithreading (SMT/HyperThreading^(tm)), this is where most of their parallelism comes from. SMT shows a significant performance improvement in almost all cases, meaning execution slots are going spare when SMT isn't in use, which further means there isn't enough ILP to saturate the processor's capability.

This isn't usually the case on ARM, most ARM cores are designed to "race to sleep" and fill as much execution resource as possible. The CPU's awake and clocked up, it darned well better use that time as productively as possible, there's a power budget to worry about!

So, while-ever we're using AMD64, which will be more or less forever as far as the immediate future is concerned, similar performance on AMD64 will always need more power than it will on ARM.

Remember peltiers!? And how we used to have to scotch-guard the entire Mobo to avoid condensation issues?

We’ve come a long way baby

>The cooling system is called the “AirJet” chip, and it comes from Frore Systems, which has begun collaborating on the technology with Intel.

Or you could, you know, use a more efficient architecture so you don't need all that cooling in the first place. For bonus points you get more battery life.

I would if I didn’t rely on windows only excel extensions and school specific windows programs but looks like we’re getting gpu acceleration with Asahi very soon.

Linux

(I know its a meme but I use gentoo btw)

I really hope so man. Been running windows arm on my new MacBook and since I have programs that are x86 dependent, the virtualization layer in windows arm is pretty inefficient compared to Rosetta. Even then, my fans don’t turn on.

Yeah, I wish we led more with the idea of efficiency in engineering CPUs

I actually wasn't aware LTT did a video on Peltier coolers.

Just to clarify: Peltier coolers are heat pumps, they move heat from one side of the plate to the other. This means that like any other cooling system they don't generate cold, they remove heat. That must then be dissipated into the air by a more traditional cooler.

They're more interesting I think for power generation. The same principle is used to power the Mars rovers using a brick of plutonium (called a "radio-thermal generator"). It's really cool.

LTT more recently did a video on a piezoelectric fan. If you haven't seen it you should check it out, it's also cool.

I know this sub has a huge anti apple bias but the fact their processors are even competing with the highest end CPU’s while having a TDP of 10-40 watts and barely ever turning on the fans is probably the better approach than redesigning fans.

I love you.

Perfume is banned in most offices but Zuck thinks his motion sickness device will catch on.

I'm not a fan

Skepticism, maybe not. But how about that plummeting stock price?

Unless you're trying to overclock a pentium duocore to 10ghz without giving our solar system a second star.

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