News Kickstarter campaign claims its $39 AI-powered PlayStation 5 add-on reduces exhaust temps by up to 9 degrees C

WTF?? People are just tacking on "Ai" to everything. There's zero need for Ai on this. You literally just set a fan curve.

Also, the PS5's internal fan controller probably close loops to a set temperature. Meaning the internal fan will slow down to reduce noise, so you might not see good temperature savings unless you can fix the internal fan to 100%.
 
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The goal of a fan is to reduce the internal temperature, not exhaust temperature.
Lower exhaust temperature can mean the inside is staying hot, which is a bad thing.
I mean, while I would agree that the device is stupid and obviously trying to take advantage of dumb people that don't know any better, if the exhaust is cooler it probably is reducing the heat internally.. it could literally be sucking the hot air out of it, maybe..
That said, I'm upset this was even an article because they shouldn't be promoting something that is THIS stupid. AI powered, yet not connected to the Internet.. how dumb are people, or the person writing the article?!
 
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I mean, while I would agree that the device is stupid and obviously trying to take advantage of dumb people that don't know any better, if the exhaust is cooler it probably is reducing the heat internally.. it could literally be sucking the hot air out of it, maybe..
That said, I'm upset this was even an article because they shouldn't be promoting something that is THIS stupid. AI powered, yet not connected to the Internet.. how dumb are people, or the person writing the article?!
I mean, fans like this have been around forever, and yes they can do more harm than good by restricting airflow.
That is, if they even mount the fans pointed in the right direction, which isn't guaranteed.
Maybe it's pulling so much more hot air out from inside that it's finally getting cooler, maybe it's not sealed so it pulls cool air in from the sides. Maybe the exhaust isn't actually cooler.
But let me put it this way: when your thermal paste goes bad (which at least happened on ps4), the exhaust gets cooler, but the CPU gets hotter. Adding air doesn't help, because airflow was not the bottleneck. The fans rev up, but your console stays hot.
Whatever this dumb fan does, your console definitely won't run any better, will be louder, and also it's overpriced.
 
The goal of a fan is to reduce the internal temperature, not exhaust temperature.
Lower exhaust temperature can mean the inside is staying hot, which is a bad thing.
As long as it's not forcing heat to be diverted through other means, the only way it can lower exhaust temperature is by increasing airflow, which should lead to lower temperatures inside, as well. A given workload has a power utilization rate that's invariant of the cooling (assuming it's not thermal throttling). So, that heat must be dissipated and the only way you reduce the dowstream temperatures is by increasing the volume of air that the heat is transferred into.

Haven't you ever gotten into a cold car and noticed that the hottest air comes out of the heating vents at the lowest air speeds? Crank up the fan speed and the air coming out of the vents is now cooler. If you're trying to warm up frozen hands, it's best to keep the fan speed low. If you want to warm up the entire cabin, you might as well increase the fan speed a bit. In fact, my car does this automatically - while the engine is still cold, it keeps the fan speed down and only starts ramping it up as the engine starts to get warm.

But let me put it this way: when your thermal paste goes bad (which at least happened on ps4), the exhaust gets cooler, but the CPU gets hotter. Adding air doesn't help, because airflow was not the bottleneck. The fans rev up, but your console stays hot.
Even with poor thermal conductivity, the rate at which heat energy is transferred into the heatsink is proportional to the temperature difference. So, ramping up the fan will still have some effect, even with degraded TIM since it's not as if its thermal conductivity goes to zero.

As I said above, the only way degraded TIM reduces the total amount of heat that needs to be dissipated is if the CPU gets so hot that it starts throttling. That will reduce the amount of power being consumed, which directly determines how much heat is generated.
 
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The goal of a fan is to reduce the internal temperature, not exhaust temperature.
Lower exhaust temperature can mean the inside is staying hot, which is a bad thing.
Excellent observation. For those people who felt the need to tell you that maybe it still works because of this or that reason... they seemed to totally miss the point of your comment. The promise to reduce exhaust temps seems purposely evasive, if not downright deceptive, about how well it works.
 
For those people who felt the need to tell you that maybe it still works because of this or that reason... they seemed to totally miss the point of your comment.
I don't miss the point. I understand how heat works, maybe better than some. The idea that the heat is "trapped inside" is a physical impossibility, unless it ultimately causes throttling. That's because heat is produced at the same rate without or without the extra fans (unless throttling) and therefore it has to go somewhere, and at pretty much the same rate.

The promise to reduce exhaust temps seems purposely evasive, if not downright deceptive, about how well it works.
I think they talk about exhaust temperatures because that's what you can easily measure. The PS5 doesn't tell you the temperature of the CPU (even though it obviously knows). So, the exhaust temperature is what someone can easily test for themselves. To test the CPU temperature, you'd have to hack your console and probably drill some holes in stuff to get a temperature probe mounted close enough to the actual CPU.
 
Which revision do you have? I think CFI-1100 runs hottest, since it has the same chip as the CFI-1000 models, but a smaller heatsink.

I'm sure dust and ambient (intake) temperature also matter, as well as what sorts of games you run and how hard they stress it.
I got the CFI-1116A which is probably the same heatsink shrink revision you mentioned, I live in a cooler climate though which might contribute to lack of overheating issues.
 
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Which revision do you have? I think CFI-1100 runs hottest, since it has the same chip as the CFI-1000 models, but a smaller heatsink.

I'm sure dust and ambient (intake) temperature also matter, as well as what sorts of games you run and how hard they stress it.
I have a CFI-1115A and never had issues (hours of FFXVI, VII Remake, and GT7 races), but I can see a problem arising if people put this console in an enclosed entertainment system cabinet with little ventilation. More fan speed will simply distribute and move more hot air, eventually getting to a critical temperature point. Very unwise decision.

Have a PS5 Pro now that is most certainly not in an enclosed entertainment system cabinet. It stands alone and can intake/exhaust all the air it needs.
 
I have a CFI-1115A and never had issues (hours of FFXVI, VII Remake, and GT7 races), but I can see a problem arising if people put this console in an enclosed entertainment system cabinet with little ventilation. More fan speed will simply distribute and move more hot air, eventually getting to a critical temperature point. Very unwise decision.
Even in an enclosed A/V cabinet, more fan speed will still provide a benefit, though certainly a smaller one. The effect of an A/V cabinet has is that it basically increases your effective ambient temperature, which makes any cooling solution less effective, but the cooling efficacy doesn't hit zero until the ambient temperature equals the heatsink temperature.

I don't envy the designers of the cooling systems for these consoles, because they have to try and accommodate every dumb thing people do with them, including throwing clothes on them and letting them get clogged with pet hair.