Predator Helios Neo 16 (PHN16-72) Undervolting OR proper fan curve?

AlexanderV
AlexanderV Member Posts: 1 New User

Hey guys. I've recently purchased a Helios Neo 16, with 14900hx and rtx4070 in it, and it overheats massively due to overvolting (touches 1.5v, which it should NOT). I wanted to ask if there is any way to undervolt it a bit, or to control it in any other way other than ThrottleStop/XTU, which both seem insanely limited due to Acer restrictions, all I can truly seem to change is TDP, but not voltage, frequency, or anything of any use.
I have updated the Bios to version 1.15, as that's the latest one on the laptop's support page.

Furthermore, is there any app out there that can be used to control fans, other than Predator Sense?
I mainly wanted to use the laptop in the bedroom (on a cooler stand, connected to an external monitor, so not in my lap, obviously), but the noise is insane. Using Predator Sense seems like a scam, since it only gives the illusion of user settings.
Fan options are Auto, Max and Custom. Setting it to Custom does NOT offer a proper fan curve for me to set, as practically any and all competitor manufacturers do, but instead, just a slider. Setting the slider to minimum, for example, makes it quiet but it's only temporary, as it gets overridden immediately as the cpu reaches 80c, and then the fans start blasting off like it's attempting to achieve liftoff.
Is there any software out there that would allow me to just create my own fan curve that will NOT be overridden?
The performance difference between the power modes Balanced and Performance seems to be somewhere between 30 and 40% performance lost when switching to Balanced. But keeping it on Performance has me well above 50 decibels, to the point in which I can barely hear my own thoughts.

Speaking of temperatures and other things… As I'm a custom loop builder and an ex XOC enthusiast, I decided to open it up and take a look. There is a chance that they might've just put some soft soldering tin instead of liquid metal on my device, given how the consistency of it was quite far from any liquid metal i've ever touched. Replacing it with Honeywell PTM7950 has already netted me a small improvement to temps (dropped by 3ish * celsius), but insufficient to keep it below 80c, so it still overrides my fan settings and goes above 50 decibels.
Another fun thing, only the cpu received the soldering tin that they say is liquid metal. The gpu die had basic, cheap thermal paste on it. I replaced both, and the gpu dropped 10c already.
I'll keep the PTM7950 for a few more days, to give it time to settle in and cure, and I'm hoping by then maybe someone here has an idea of any software to use, either for overvolting, or for proper, honest fan control.
Next step in my tests will be to try some graphite pads, and only after that, putting my own liquid metal on it.

Anyway, excuse my rant, but I've never owned such a limiting laptop before, especially in situations where the limitations cause more harm to the user, and potential damage to the components, based on voltage…
Aesthetically speaking, looks great, the hardware is, in theory, quite good. And all seems practically limited and underperforming because of Acer's forcefully imposed limitations.
And please, I don't want to hear the excuse that Acer locked undervolting because it ruined cpus. Undervolting cannot damage hardware. All it can do is make it not boot. Implement a basic bios reset combo (on Asus laptops, for example, hold power button for 15-20seconds, and it resets cmos) and that's it.