but you're now generating more heat than the system is designed to dissipate
I believe that's more accurately rephrased as "now you have more performance than they wanted you to have", because that's how it's being used in practice.
FYI, it is painfully obvious that you're toeing some sort of company line here.
Edit: and getting flagged for pointing out the truth should itself be quite telling. ;-)
"An unthrottled CPU without any OS-level policy will generate enough heat that the case temperature may rise to levels that violate safety regulations" can certainly be interpreted as "now you have more performance than they wanted you to have", yes.
> FYI, it is painfully obvious that you're toeing some sort of company line here.
I work for a company that develops trucks. While thermal dissipation is something that we do need to worry about, I can promise that it is absolutely not at the scale involved here. I've also been pretty consistent in criticising Intel for refusing to document DPTF. Whose company line do you think I'm toeing here?
Despite literally zero evidence of that actually being a problem in practice?
I've also been pretty consistent in criticising Intel for refusing to document DPTF. Whose company line do you think I'm toeing here?
Not Intel, but there's plenty of evidence that DPTF just cripples performance; and why else would you jump in to an article about unlocking manufacturer-crippled products with FUD like "not the correct approach"? It's like posting "may cause processor damage" and advocating for stock speeds on every article about overclocking.
For the record, I've been overclocking (not at extreme or competitive levels) since the early 90s and haven't killed any hardware because of it. The system I'm posting this from has been on a 50% overclock for over a decade and it's still rock-solid stable.
Seems like there are quite a few other reasons why someone would "jump in", including being a relative expert. Maybe you could think of a few others yourself?
Sustained contact with metal at a temperature as low as 45C is sufficient to cause discomfort, and it's a surprisingly small rise above that before you can actually cause burns (https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&d...). Skin temperature is a standard input to DPTF policies, and during my testing I was certainly able to get the skin temperature of my test laptop well above that level - DPTF would trigger throttling instead.
> why else would you jump in to an article about unlocking manufacturer-crippled products with FUD like "not the correct approach"?
DPTF defaults to a "safe" configuration, where "safe" is a euphemism for "almost unusably slow". If what you care about is your laptop not being almost unusably slow, it's reasonable to choose an approach that obtains that without introducing any additional thermal concerns. If what you care about is obtaining the absolute maximum performance possible from your hardware with no regard to any safety or longevity concerns, then yes, implementing the DPTF policy is probably not what you want to do. But recommending the latter without providing any information about the tradeoffs is irresponsible.
You choosing to not even look for evidence so you could make an argument in ignorance does not automatically mean it doesn't exist. This is literally the first google result for "laptop case temperature causing burns": https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4292129/
Also look at this fun condition: https://en.wikipedia.org/wiki/Erythema_ab_igne
> Temperatures between 43 and 47 °C can cause this skin condition; modern laptops can generate temperatures in this range. Indeed, laptops with powerful processors can reach temperatures of 50 °C and be associated with burns.
Some more results:
https://escholarship.org/uc/item/4n04r793
https://www.researchgate.net/publication/23164210_Thigh_Burn...
They added thermal throttling because most users only max out their CPU a tiny fraction of the time so the thermal inertia can compensate for inadequate cooling. It’s infrequent enough that most users could even disable it without noticing a difference. The problem is under the wrong conditions Aka inadequate cooling plus high ambient temperatures plus extreme workload = dead CPU.
And no this isn’t theoretical, one summer working without AC I cooked a CPU before they added thermal protection. It actually happened to several people in the same heatwave.
Only fairly recently with Turbo Boost did Intel combine both ideas. It’s actually a fairly clever optimization as single threaded workloads benefit quite a bit from the extra thermal overhead.
Silicon aging is worse at higher temperatures, people are going to kill their 7/10nm chips far quicker if they keep overclocking as they've previously done. But that'll be Big Silicon's fault too, no doubt.