is a -5v rail important for a socket a machine?

[MrWicked1968]

My Mom wants her old mATX case back. In it is a Sparkle 200w PSU http://www.sparklepower.com/pdf/FSP200-50SNV.pdf

the system is fairly basic: AXP 2400, 512mb DDR266, 80gb hdd, DVD rom, FX5200 agp, 60mm and 80mm case fans, stock amd HSF, and an ECS KS741GX mb.

is the lack of a -5v rail going to affect the stability of this system? I seem to remember a brouhaha regarding the -5v rail being neccessary for somebody's motherboard to properly function. but I don't think it had anything to do with socket A.

one of the online PSU calculators said this setup would need 181 watts, but I don't think the calculator accounts for an mATX mb.

[burebista]

-5V was for ISA slots and for some audio (on-board or PCI, I don't remember exactly now).
So if you don't have sound you know who's guilty.
But I guess you'll be fine.

[jonnyGURU]

On board sound. I know MSI board's sound doesn't work without a -5, but that's about it.

[MrWicked1968]

thanks guys.