Intel Communities: Message List - DQ45EK - High Frequency Noise from VRM ?

Re: DQ45EK - High Frequency Noise from VRM ?

dwbrown@rm.com — Thu, 16 Jul 2009 09:48:59 GMT

For low power - read High Power !!

Celeron E1400 good, all others below bad

SLAR2 2 GHz E1400 2 800 MHz 65 nm M0 512 KB LGA775 06

SLB9V 2.70 GHz E5400 2 800 MHz 45 nm R0 2 MB LGA775 06

SLB9Y 2.80 GHz E7400 2 1066 MHz 45 nm R0 3 MB LGA775 06

SLAPK 3.16 GHz E8500 2 1333 MHz 45 nm C0 6 MB LGA775 06

DQ45EK - High Frequency Noise from VRM ?

dwbrown@rm.com — Thu, 16 Jul 2009 08:28:21 GMT

Hi,

Anyone else noticed this on DQ45EK boards ? Especially when using fairly low power processors such as Celeron ?
I think its coming from the VRM and its the sort of noise that could drive a dog crazy, very high frequency whistle/whine/buzz that occaisionally changes slightly in tone.
It sounds as if its coming from around the VRM area on the mainboard.