Vapor chamber is lower weight and higher thermal conductivity, but much higher cost. Basic hierarchy of heat dissipation is solid aluminum -> solid copper -> heat pipes -> vapor chamber. You climb the hierarchy as need based on power source output, relation of power source to dissipation area, and maximum allowed power source temperature.Solid metal vs Vapour Chamber?
How big is the difference?
All of those eh?something like current macbook air or some form of yoga 2in1, or a foldable screen laptop?
There's no best use case really if their claims of doubling perf/area every 2 years for several generations are not just godlike hype.I think the best use case for this tech is lunar lake: low-power but can boost higher than passive heatsink can handle (4P+4E) . what kind of end-product it would be though? something like current macbook air or some form of yoga 2in1, or a foldable screen laptop?
It does increase in weight by more than 2x the OG Mini though, and about 2.75x the weight of the newer, lighter Mini Slim variant, unless they are also going for a slim variant of the Pro SKU too.KEY POINT: The AirJet Pro offers 2x the cooling of the AirJet Mini, while consuming less than 2x the power and taking up less than 2x the size.
That is the wild card. This 1st generation of AirJets is not "good enough" to be "worth it". It is costly, and the cooling capacity is not sufficient. Also as ikjadoon mentioned, it seems for battery powered devices, it's not great.There's no best use case really if their claims of doubling perf/area every 2 years for several generations are not just godlike hype.
In sheer complexity of tech concerns it will always be more costly than a fan, but there is a point past which the extra cost is ameliorated by either economics of scale, or the performance benefits.That is the wild card. This 1st generation of AirJets is not "good enough" to be "worth it". It is costly, and the cooling capacity is not sufficient. Also as ikjadoon mentioned, it seems for battery powered devices, it's not great.
The system, however, doesn't operate in complete silence, as indicated by our measurement results. At idle, the volume level is a very low approximately 26.6 dB(A). With moderate load, the noise level increases to 29.4 dB(A). It's important to note a peak noise level slightly exceeding 40 dB(A). Additionally, the subjective perception of volume may seem somewhat louder due to the high-frequency cooling noise.
First review up of a mini PC. 2x AirJet Minis, so 9.5W total peak cooling capacity (NBC erroneously uses 10.5W, which is the total dissipation without subtracting its own heat output).
Load average is a fair bit lower than other miniPCs, but unsure what happened with that much louder peak.
Power: could just be the SoC / platform or even the power adapter, as it matches the average power draw but compares less favourably to NBC's systems.
I don't use miniPCs enough to judge how good / bad it is, but will read more carefully later.
Ok this is really frustrating. Most of the reason I’ve been so skeptical is that they keep publishing these “heat dissipation rates” instead of publishing what is the industry standard for heatsinks: thermal resistance with units of K/W95°C CPU temp for about 7W power...
Is that a cooler or a heater.?..
They've been doing this for noise too if you think about it. Not only are they not silent at max speed, they have a different frequency profile to what we're used to with good quality fans, with emphasis on Mid and Upper Highs (5Khz and above).Most of the reason I’ve been so skeptical is that they keep publishing these “heat dissipation rates” instead of publishing what is the industry standard for heatsinks: thermal resistance with units of K/W
Ok this is really frustrating. Most of the reason I’ve been so skeptical is that they keep publishing these “heat dissipation rates” instead of publishing what is the industry standard for heatsinks: thermal resistance with units of K/W
The thermal resistance numbers don’t lie
There are standardized tests for this where the heatsink is attached to some calibrated thermal load (typically a resistor) and placed in some controlled temperature test chamber. If you try to order an industrial heatsink or HSF off a website like Digikey you’ll see these values published on datasheets. It’s pretty much the first datapoint a thermal designer will want to know. Not sure why in the consumer space it’s just not provided for heatsinks, but I would expect to find the thermal resistance published on some whitepaper or research paper for these AirJets and haven’t seen that yet.
You got me in the first half.You obviously just don't get it. This is a new and novel cooling technology. Not only does it allow for air flow in a unique way without requiring blades or bearings that can wear out, but you also get the added advantage of much louder operating noise than advertised (some might even say annoyingly loud), much lower efficiency than advertised, and you are only paying a bit extra over classical air cooling to turn the compute device into a lap/hand warmer. It's the total package!
Their PR about future 'improvements' also mentions something along the line of higher frequency operation - so if it goes significantly higher we could start to see pets with higher frequency sensitivity starting to become irate when they are turned up.They've been doing this for noise too if you think about it. Not only are they not silent at max speed, they have a different frequency profile to what we're used to with good quality fans, with emphasis on Mid and Upper Highs (5Khz and above).
View attachment 92101
I think the tech needs more time in the oven, right now it's more of a niche solution for scenarios where it can leverage it's high static pressure and unique form factor.
I don't see it screaming at 10kHz in consumer devices, unless used below their max rating (and thus with even lower cooling power).
Their PR about future 'improvements' also mentions something along the line of higher frequency operation - so if it goes significantly higher we could start to see pets with higher frequency sensitivity starting to become irate when they are turned up.
I don't have pets, and I don't use laptops with their battery constraints - so I'm good with less than great efficiency so long as it works well and hopefully reduces the weight and volume of wall powered PCs in the future.So they are adding ultrasonic pest repellent functionality, nice!
On a more serious note, if they can get the frequency up higher than human audible range (and that won't cause issues with pets) that would be a nice improvement. I imagine it will increase power consumption but maybe they can make other improvements there as well. A truly silent cooling solution would be a nice innovation, even if it's cooling efficiency isn't super competitive.
I'm good with less than great efficiency so long as it works well and hopefully reduces the weight and volume of wall powered PCs in the future.
The AirJets are protected by IP68 dustproof filters, and if the filter gets clogged, the AirJet has rhe ability to reverse the airflow to blast out the dust.You can't have these narrow passages on something required to work longer term in the real world. Dust will impede airflow too much. The rest of the dubious applications/specs don't even consider this reality.
Ok this is really frustrating. Most of the reason I’ve been so skeptical is that they keep publishing these “heat dissipation rates” instead of publishing what is the industry standard for heatsinks: thermal resistance with units of K/W
The thermal resistance numbers don’t lie
There are standardized tests for this where the heatsink is attached to some calibrated thermal load (typically a resistor) and placed in some controlled temperature test chamber. If you try to order an industrial heatsink or HSF off a website like Digikey you’ll see these values published on datasheets. It’s pretty much the first datapoint a thermal designer will want to know. Not sure why in the consumer space it’s just not provided for heatsinks, but I would expect to find the thermal resistance published on some whitepaper or research paper for these AirJets and haven’t seen that yet.
Which is marketing nonsense. I can reverse a fan and it doesn't "blast out the dust". It's stuck on there, and the filters are another thing that clogs, not clog-prevention. It might get a little off, but then it builds up again and gets less off next time and so on, until it's a show-stopper. It's more like they acknowledge there's that problem but don't have a solution.The AirJets are protected by IP68 dustproof filters, and if the filter gets clogged, the AirJet has rhe ability to reverse the airflow to blast out the dust.
Isn't it still the same problem normal fans have? I mean maybe it's more prone to dust but it does have way higher static pressure than normal fans so really these things need to be tested for us to be sure.It's more like they acknowledge there's that problem but don't have a solution.