I'm using PowerLogic Magnum 450W Pure - 900W Peak

Spec:

MSI PM8M-V Mobo
P4 3.2 HT Norhtwood
TT UFO Fan
CM Ice NB Cooler
Galaxy 6600GT AGP
Sound Blaster Live! EMU-10k1
1xsata 500GB Seagate - XP SP2
1xpata 80GB Seagate - Vista
1xpata 40GB Maxtor - Unix/Linux
1xpata Pioneer DVD-RAM
2x1GB Kingston DDR1
3x120mm (2 of them have LED) from my Shinobi Casing
Front panel LCD Display

I didn't OC anything

Should this be OK?

Bro,

Hi, I want to ask opinions from pros here.  Which power supply you would recommend according to my rig below.? Will be having extra 500GB hard disk soon. Currently using Cooler Master Extreme 500W.

Budget: RM300-400
(Modular or non-modular)

My rig using:
Intel C2D E6550 2.33Ghz, 1333FSB
Cooler Master GeminII
Gigabyte GA-P35-DS3
4x1Gb Kingston @ DDR667
Gigabyte GF8600GT 256MB DDR3 (128bit)
160GB and 80GB Maxtor 16mb 7200rpm Serial ATA2
LG H55N DVD-RW
five 90 cfm CM fans
Thanks in advance. 

If your retailer only has CM psu's go for the Silent Pro M 600w or 700w, those are good units built by Enhance.  I think the Silent Pro M 600w should be around the same price as the GX 750w.