Power Supply Fundamentals & Recommendations

Sidney · 19th September 2005, 17:47

Often one of the biggest noise maker in a PC, the Power Supply Unit delivers regulated DC voltages to various components. Computer PSUs are switching mode types, which provide relatively high efficiency at low cost. They utilize forced air cooling, usually an 80mm fan, and sometimes incorporate a second fan. The fan is the primary source of noise in a PSU. Coils in a PSU can buzz and hum, especially when pushed under high loads, but usually fan noise masks coil noise. Typically, the fan is rated for higher than the maximum airflow needed to keep the PSU cool. It's cheap engineering insurance for the manufacturer and also fulfills the case cooling role of the PSU fan.

http://www.silentpcreview.com/article28-page1.html

Sidney · 19th September 2005, 18:00

Seasonic S-12 500W

http://www.madshrimps.be/?action=get...&articID=3 28

39.8 dBA reading from my meter at about one centimeter.

jmke · 19th September 2005, 18:02

yes their dBA readings have always been a bit off

Sidney · 19th September 2005, 18:04

Well, my ambient noise level is high ~37 dBA

Seasonic is very well made; high to moderately priced.

19th September 2005, 17:47	#1
Sidney Member Join Date: Mar 2004 Posts: 15,738	Power Supply Fundamentals & Recommendations Often one of the biggest noise maker in a PC, the Power Supply Unit delivers regulated DC voltages to various components. Computer PSUs are switching mode types, which provide relatively high efficiency at low cost. They utilize forced air cooling, usually an 80mm fan, and sometimes incorporate a second fan. The fan is the primary source of noise in a PSU. Coils in a PSU can buzz and hum, especially when pushed under high loads, but usually fan noise masks coil noise. Typically, the fan is rated for higher than the maximum airflow needed to keep the PSU cool. It's cheap engineering insurance for the manufacturer and also fulfills the case cooling role of the PSU fan. http://www.silentpcreview.com/article28-page1.html __________________ lazyman Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II

19th September 2005, 18:00	#2
Sidney Member Join Date: Mar 2004 Posts: 15,738	Seasonic S-12 500W http://www.madshrimps.be/?action=get...&articID=3 28 39.8 dBA reading from my meter at about one centimeter. __________________ lazyman Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II

19th September 2005, 18:02	#3
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	yes their dBA readings have always been a bit off __________________

19th September 2005, 18:04	#4
Sidney Member Join Date: Mar 2004 Posts: 15,738	Well, my ambient noise level is high ~37 dBA Seasonic is very well made; high to moderately priced. __________________ lazyman Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
FSP Group Power-Mod 700 Watt Power Supply Review	jmke	WebNews	0	22nd October 2008 12:54
Corsair Launches New Power Series Power Supply Line	jmke	WebNews	0	14th October 2008 19:58
Topower 850Watt Quad Graphics Card Power Supply	jmke	WebNews	0	15th September 2008 13:36
PC Power & Cooling Silencer 610W Power Supply	jmke	WebNews	0	30th December 2007 17:49
Thermaltake announces semi passive 380/520W Dual Power Supply	jmke	WebNews	0	2nd December 2006 08:39
Corsair HX620W Modular Power Supply Review	windwithme	WebNews	6	9th August 2006 09:47
Corsair goes PSU with HX Modular Power Supply Series!	jmke	WebNews	5	1st August 2006 18:17
High Power 560Watt Power Supply HPC-560-A12C	Sidney	WebNews	0	21st February 2006 07:11
OCZ Announces 600 Watt PowerStream Power Supply	jmke	WebNews	0	28th October 2004 00:30
ACRyan launches Power Supply with removable cables and adjustable volt rails	jmke	WebNews	4	15th June 2004 19:08