How to test if my PSU is strong enough BEFORE reformatting Windows?

[Sulaco]

Hey guys,

I've got a new motherboard and CPU in the mail, and it should be here either today or no later than tommorow.

Now, I know you're supposed to reformat and reinstall windows with a new motherboard, and I plan on that eventually.
Only hitch is, I want to be sure my PSU is strong enough for the system, before I go an wipe my HDD clean. Because if it is NOT strong enough, I'd like to put it back in my current system along with my HDD and use it until I can get a stronger PSU.

With that in mind then, when the motherboard and CPU arrive, whats the best way to test whether or not the PSU will be able to handle the new components? Could I just install it and add in all my devices as normal with my current hard drive, and just boot into windows and see if I can play any demanding games or anything? Obviously, this would NOT be long term, I just want to make sure my PSU is strong enough before wiping my HDD clean for a new mobo.
Could there be any conceivable harm from doing this? Or any better recommendations on how to see if my PSU will handle my system full load?

Thanks guys!

 

[Sulaco]

..anybody?

 

[mechBgon]

If the old power supply is not strong enough, one possible way you will know it is that the old power supply emits a loud *POP*, dying on the spot and taking some of your new hardware with it. And if I recall correctly, your old one is made by L&C. It's your money...

edit: ok, at least your existing PSU is an Enermax, that's better I'd still replace it, considering how much you're spending on the rest of your loot (A64, 9800 Pro, etc).

 

[Sonic587]

List what are you getting and the PSU model #.

Also, might want to check out the link in your sig. Showing up as this...

https://http//www.anandtech.com/mysystemrig.html?id=23660

 

[Sulaco]

Sorry guys.

This the rig I'll have.

Chaintech VNF3-250
AMD 64 3000+ (not OCed)
Radeon 9800 Pro 128Mb (not OCed)
512Mb of Kingsston PC2700 RAM
Onboard audio
2 HDDs (40 gb Wd and 30Gb Maxtor)
Sony CDRW drive
56k PCI modem
Monitor
5.1 speakers

My current PSU is a 300Watt Enermax. The ONLY additions to what I already have are the Mobo and CPU. My PSU currently runs my rig (same specs except with an 8RDA+ and AXP 2000+) just fine.

 

[cy7878]

remember, new hardware ALWAYS are more energy efficient than old hardware, at any speed. If you are concerned about the output, power-up the MB without the drives first.

but 300W is plenty IMO.

 

[Sulaco]

Originally posted by: cy7878
remember, new hardware ALWAYS are more energy efficient than old hardware, at any speed. If you are concerned about the output, power-up the MB without the drives first.

but 300W is plenty IMO.

Oh really? I didn't know that...

I was under the impression the newer or faster it was, the more power it took.

Thanks for pointing that out.

 

[tennesota]

Originally posted by: cy7878
remember, new hardware ALWAYS are more energy efficient than old hardware, at any speed.

While I cannot provide any proof to the contrary I believe you are incorrect. Manufacturers would need to employ very strict Quality Assurance programs to make your statement true.

 

[tennesota]

Originally posted by: Sonic587
List what are you getting and the PSU model #.

Also, might want to check out the link in your sig. Showing up as this...

https://http//www.anandtech.com/mysystemrig.html?id=23660

Here is your code edited to display the system rig

http://www.anandtech.com/mysystemrig.aspx?rigid=23660