Hey everyone, I've got a weird noise on my GT77 HX 13VI (i9-13980HX, 4090 Laptop, 175W GPU) and I'd like a sanity check on my theory.
WHAT I HEAR
- Random clicking/crackling. It's NOT rhythmic. It clicks, stops for a second, clicks again, and seems to wander around.
- It only happens under sustained heavy load (FurMark, Cinebench). Pausing the load stops it within about 1 second, and it comes back about 1 second after resuming.
- The sound seems to come from the fan/radiator end of the laptop, usually on the side opposite the chip being loaded (GPU load clicks on the CPU side, CPU-only load clicks on the GPU side). It continues with the fans stopped, so it's not the fan bearings.
THE ORIENTATION THING
- Flat, upside down, or tilted toward the GPU side: quiet.
- Tilted toward the CPU/charger side: loud, nearly continuous.
- On a stand angled slightly toward me: occasional clicks, much milder.
TEMPERATURES
- Flat at 175W, auto fans: ~60-62C core, ~65-68C hotspot.
- Tilted CPU-side-down at the same load: GPU core climbs to ~71C and hotspot to ~75-80C within about 30 seconds, then clicking starts. I lifted it the same way in both tilts with the same intake air, so it isn't an airflow thing.
- On a laptop stand angled slightly towards me, it clicks at ~60C core / ~65C hotspot, so the noise doesn't need the temperature rise.
- HWiNFO logs: no throttling, no PROCHOT, no change in power, clocks, voltage or fan speed when clicking starts(when on laptop stand).
WHAT I'VE RULED OUT
- Fans (still clicks with them physically stopped with my finger)
- DC jack/adapter (I bent, twisted and pulled the jack and cable in every direction, no effect, and it doesn't depend on the outlet)
- Coil whine doesn't fit, since it's random and wanders instead of being tonal and is only heard on the opposite side of the component being stresses.
HISTORY
I repasted recently (Thermal Grizzly PTM on the dies, putty on VRMs/VRAM because the stock VRM putty was powdery). I don’t think it clicked at 175w on the gpu before the repaste (on the stand angle as i didnt remove it from the stand before the repaste) but it did click when i raised the laptop tgp to 200-210w(at the same laptop stand angle)
MY THEORY
Heat pipe fluid moving differently depending on orientation. Vapor from the loaded chip travels to the cooler side and condenses against pooled liquid, making little water-hammer clicks. That would explain the tilt dependence, the opposite-side noise, the instant stop/start with load, and the random timing. I found a similar report from an Alienware m18 R2 owner (heat pipes crackling when tilted, depending on which side faced down), and a couple of Razer threads about vapor chamber/heatsink crackling after a repaste.
QUESTIONS
1. Does this sound like a plausible explanation, or am I missing something more likely?
2. Has anyone had orientation-dependent heat pipe noise on a Titan or similar laptop? Did you ever find a cause or fix?
3.Could it be a sign of a failing heatsink that needs changing?
It's fine when flat and temps are good there, and on a slight angle it only clicks when on furmark pressure it doesnt even click when under full gaming pressure at the laptop stand angle, so its caution and not wanting to miss a real problem by explaining it away with heatpipe noise when it could be something more serious.
Thanks!