dodger1989
2025-04-08T05:27:44+00:00
众所周知技嘉显卡启停的时候有哒哒哒的噪音，国内外基本都有人中招
reddit一位用户的解释:
原文：Been doing research on this.
Gigabyte uses sleeve bearing fans with nano graphene lubricant. Other brands use dual ball bearings.
Gamers nexus did an interview with Jacob from noctua in 2024 and he explains that fluid dynamic bearings are basically enhanced sleeve bearings, with a hydrodynamic pressure field while spinning, to reduce wear and friction of the shaft against the sleeve. It’s basically floating due to the spinning force.
I suspect that gigabyte’s sleeve bearing design maintains a similar hydrodynamic pressure field while it’s spinning. This would benefit from an active braking system (using hall effect sensors and pwm back emf) if it’s going back and forth from 0 rpm mode to operating rpm, as the braking would reduce the amount of wear on the shaft and sleeve, from reduced time spent in the unoptimized state of the lack of a pressure field while spinning. The moving parts would be in closer contact with eachother and would rub longer without the braking to stop it as fast as possible.
So it could be an intentional engineering design due to gigabyte’s sleeve bearing fan to reduce long term wear. It could also be why asus and msi don’t have this sound, as they use dual ball bearings that dont require a pressure field, instead of sleeve bearings.
I haven’t confirmed with gigabyte, just theorizing.
翻译：我一直在研究这个问题。
技嘉使用的是带有纳米石墨烯润滑油的套筒轴承(Sleeve Bearing)风扇。其他品牌则使用双滚珠轴承(Dual Ball Bearings)。
Gamers Nexus 在 2024 年采访了 Noctua(猫头鹰)的 Jacob，他解释说流体动压轴承(Fluid Dynamic Bearings, FDB)基本上是增强型的套筒轴承，在旋转时会产生一个流体动压场，以减少轴心与轴套之间的磨损和摩擦。基本上是依靠旋转产生的力使其悬浮起来。
我推测技嘉的套筒轴承设计在旋转时也能保持类似的流体动压场。如果风扇需要在 0 转速模式和运行转速之间频繁启停，那么采用主动刹车系统(使用霍尔效应传感器和 PWM 反电动势)将对此有益。因为刹车能减少风扇在缺乏动压场(非优化状态)下旋转的时间，从而降低轴心和轴套的磨损。如果没有刹车系统使其尽快停止，活动部件会更紧密地接触，并且会摩擦更长时间。
因此，这可能是技嘉针对其套筒轴承风扇有意进行的工程设计，目的是减少长期磨损。这也可能解释了为什么华硕(Asus)和微星(MSI)没有这种(刹车相关的)声音，因为它们使用的是不需要动压场的双滚珠轴承，而不是套筒轴承。
我还没有跟技嘉确认过，这只是我的推测。
所以这个噪音是正常的？
reddit一位用户的解释:
原文：Been doing research on this.
Gigabyte uses sleeve bearing fans with nano graphene lubricant. Other brands use dual ball bearings.
Gamers nexus did an interview with Jacob from noctua in 2024 and he explains that fluid dynamic bearings are basically enhanced sleeve bearings, with a hydrodynamic pressure field while spinning, to reduce wear and friction of the shaft against the sleeve. It’s basically floating due to the spinning force.
I suspect that gigabyte’s sleeve bearing design maintains a similar hydrodynamic pressure field while it’s spinning. This would benefit from an active braking system (using hall effect sensors and pwm back emf) if it’s going back and forth from 0 rpm mode to operating rpm, as the braking would reduce the amount of wear on the shaft and sleeve, from reduced time spent in the unoptimized state of the lack of a pressure field while spinning. The moving parts would be in closer contact with eachother and would rub longer without the braking to stop it as fast as possible.
So it could be an intentional engineering design due to gigabyte’s sleeve bearing fan to reduce long term wear. It could also be why asus and msi don’t have this sound, as they use dual ball bearings that dont require a pressure field, instead of sleeve bearings.
I haven’t confirmed with gigabyte, just theorizing.
翻译：我一直在研究这个问题。
技嘉使用的是带有纳米石墨烯润滑油的套筒轴承(Sleeve Bearing)风扇。其他品牌则使用双滚珠轴承(Dual Ball Bearings)。
Gamers Nexus 在 2024 年采访了 Noctua(猫头鹰)的 Jacob，他解释说流体动压轴承(Fluid Dynamic Bearings, FDB)基本上是增强型的套筒轴承，在旋转时会产生一个流体动压场，以减少轴心与轴套之间的磨损和摩擦。基本上是依靠旋转产生的力使其悬浮起来。
我推测技嘉的套筒轴承设计在旋转时也能保持类似的流体动压场。如果风扇需要在 0 转速模式和运行转速之间频繁启停，那么采用主动刹车系统(使用霍尔效应传感器和 PWM 反电动势)将对此有益。因为刹车能减少风扇在缺乏动压场(非优化状态)下旋转的时间，从而降低轴心和轴套的磨损。如果没有刹车系统使其尽快停止，活动部件会更紧密地接触，并且会摩擦更长时间。
因此，这可能是技嘉针对其套筒轴承风扇有意进行的工程设计，目的是减少长期磨损。这也可能解释了为什么华硕(Asus)和微星(MSI)没有这种(刹车相关的)声音，因为它们使用的是不需要动压场的双滚珠轴承，而不是套筒轴承。
我还没有跟技嘉确认过，这只是我的推测。
所以这个噪音是正常的？