Parallel PSU's

Yur · 10-04-2009, 06:47 AM

Hi there,

I was wondering if it would by possible to put 2 PSU's of the same wattage and make in a parallel configuration to get some more wattage for my peripherals.

This got into my mind just a half an hour, so i've been searching just a little bit on the internet, and could find a real "Yes" or "No".

The idea came into my mind after trying to over clock a PowerMac G3 from originally 350Mhz to 450Mhz, and it didn't boot power up, until i disconnected the HD(so didn't boot anyway, but i gave something on the screen at least) and a fan, so i found out the 200W PSU was insufficient, and since i never have a good PSU at hand, this idea came to life.

If nobody knows, I'm just gonna try with some old 200W PSU's, and post the result here. ;) But they wil definitely not be of the same model...:P

Thnx in adv.

Yur

**Tyree** · 10-04-2009, 07:55 AM

Not impossible but certainly not advisable. Use one good quality PSU that is capable of supplying your hardware with clean sufficient power.

**wrench97** · 10-04-2009, 08:11 AM

Agreed not a good idea and usually leads to problems, the voltage control circuits can not control each others voltages so one usually ends up trying to lower or raise the voltage and can't so the other one gets all the load.

10-04-2009, 06:47 AM	#1 (permalink)
Yur Registered User Join Date: Jun 2009 Posts: 58 OS: Windows XP Pro SP3	Parallel PSU's Hi there, I was wondering if it would by possible to put 2 PSU's of the same wattage and make in a parallel configuration to get some more wattage for my peripherals. This got into my mind just a half an hour, so i've been searching just a little bit on the internet, and could find a real "Yes" or "No". The idea came into my mind after trying to over clock a PowerMac G3 from originally 350Mhz to 450Mhz, and it didn't boot power up, until i disconnected the HD(so didn't boot anyway, but i gave something on the screen at least) and a fan, so i found out the 200W PSU was insufficient, and since i never have a good PSU at hand, this idea came to life. If nobody knows, I'm just gonna try with some old 200W PSU's, and post the result here. ;) But they wil definitely not be of the same model...:P Thnx in adv. Yur __________________ To OC or not to OC, that's the question.

10-04-2009, 07:55 AM	#2 (permalink)
Tyree Mentor Hardware Team Join Date: May 2009 Location: Illinois Posts: 5,735 OS: XP Pro-7RC-Mandriva My System	Re: Parallel PSU's Not impossible but certainly not advisable. Use one good quality PSU that is capable of supplying your hardware with clean sufficient power. __________________ Posting your PC specs will help us to help you quicker and more efficiently.

10-04-2009, 08:11 AM	#3 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,700 OS: Win7	Re: Parallel PSU's Agreed not a good idea and usually leads to problems, the voltage control circuits can not control each others voltages so one usually ends up trying to lower or raise the voltage and can't so the other one gets all the load. __________________ Power Supply and Selection