Burning smell coming from motherboard

[mattraptor]

So let me give you a rundown of what has happened in the past half an hour.
I went to go reinstall my 120mm liquid AIO cooler (Cooler Master ML120L RGB) because the temperatures were not really what I wanted (around 40C at idle on a R7 1700x stock clock).
When I've reinstalled it and go to turn my PC on, I immediately was hit by a burning smell. With further investigating, the smell was coming mostly from the lower half of my motherboard, around the PCI slots. I made sure that it wasn't coming from my PSU, GPU, or AIO pump, which the smell was not. I want to know what possibly could have caused this smell, whether it was a blown capacitor, or just some dust/lint burning on the mobo.

Here are my specs -

Ryzen 7 1700X @ 3.4 GHz (Stock speed)
GTX 1070 Ti
8GB DDR4 3000MHz RAM
ASUS PRIME X370 Motherboard
EVGA 550 Gold PSU

Also, I built this computer a few months ago, so all the parts (except for my GPU which I bought used off of eBay) are practically brand new.

[r.linder]

As long as everything is working, it should be alright unless the smell persists. I would consider contacting ASUS support just to see what they say. It's probably something mundane.

In any case, 40 C idle with that AIO is normal for the MasterLiquid ML120L because the pump is quite garbage. I've used the ML240L RGB myself, and it didn't do much better, nor could it really handle Precision Boost Overdrive being enabled with my 2700X under extreme workloads and stress testing as the temperatures pushed to the high 70s rather quickly. I quickly dumped the ML240L in favor of Corsair's H115i RGB Platinum, which can handle PBO up to around 4.5 GHz according to 3DMark testing with my 2700X in the low to mid 60s.

Furthermore, as a test when I had my 1700X, I manually overclocked all cores to the turbo clock and it ran in the mid 60s under load, but overclocking any higher pushed temperatures into the 80s under the same load. Having used a Deepcool CAPTAIN 120EX RGB, it performs more or less the same as an ML240L RGB.

[mattraptor]

引用自 Escorve：

As long as everything is working, it should be alright unless the smell persists. I would consider contacting ASUS support just to see what they say. It's probably something mundane.

In any case, 40 C idle with that AIO is normal for the MasterLiquid ML120L because the pump is quite garbage. I've used the ML240L RGB myself, and it didn't do much better, nor could it really handle Precision Boost Overdrive being enabled with my 2700X under extreme workloads and stress testing as the temperatures pushed to the high 70s rather quickly. I quickly dumped the ML240L in favor of Corsair's H115i RGB Platinum, which can handle PBO up to around 4.5 GHz according to 3DMark testing with my 2700X in the low to mid 60s.

Furthermore, as a test when I had my 1700X, I manually overclocked all cores to the turbo clock and it ran in the mid 60s under load, but overclocking any higher pushed temperatures into the 80s under the same load. Having used a Deepcool CAPTAIN 120EX RGB, it performs more or less the same as an ML240L RGB.

Ok, so I guess I overestimated the potential of my liquid cooler. I'll go ahead and look for a different cooler then since I'm not really that satisfied with my temperatures. About the motherboard, I'd say that if the parts work fine but the smell persists, I'll just call in and get a replacement board as it's still under warranty.

[Korra]

It's a bomb.

[r.linder]

引用自 mibr_baitzera：

引用自 Escorve：

As long as everything is working, it should be alright unless the smell persists. I would consider contacting ASUS support just to see what they say. It's probably something mundane.

In any case, 40 C idle with that AIO is normal for the MasterLiquid ML120L because the pump is quite garbage. I've used the ML240L RGB myself, and it didn't do much better, nor could it really handle Precision Boost Overdrive being enabled with my 2700X under extreme workloads and stress testing as the temperatures pushed to the high 70s rather quickly. I quickly dumped the ML240L in favor of Corsair's H115i RGB Platinum, which can handle PBO up to around 4.5 GHz according to 3DMark testing with my 2700X in the low to mid 60s.

Furthermore, as a test when I had my 1700X, I manually overclocked all cores to the turbo clock and it ran in the mid 60s under load, but overclocking any higher pushed temperatures into the 80s under the same load. Having used a Deepcool CAPTAIN 120EX RGB, it performs more or less the same as an ML240L RGB.

Ok, so I guess I overestimated the potential of my liquid cooler. I'll go ahead and look for a different cooler then since I'm not really that satisfied with my temperatures. About the motherboard, I'd say that if the parts work fine but the smell persists, I'll just call in and get a replacement board as it's still under warranty.

I would recommend Corsair, Deepcool, or NZXT for AIO units, and Noctua, Cryorig, Cooler Master, or be quiet! for air cooling.

My H115i does a good job of keeping my 2700X cool enough even with Precision Boost Overdrive (raises PB's voltage limits) enabled.