Is a 300W psu enough for me?

[NervousNovice]

I was thinking about getting a Zalman psu. The 300W model is almost half the price of the 400W one.

Zalman 300W spec:

+3.3V 28A
+5V 30A +3.3 and +5 max at 180W
+12V 15A +3.3 and +5 and +12 max at 280W


Stuff inside my computer:

AMD 2500+ (no overclocking)
Zalman CNPS7000 HSF

Asus A7V600 mobo
one 512MB DDR400 Ram
Sapphire Radeon 9600 128MB

one SATA 80G HDD
one 16x DVD Rom
one Floppy

two case fans (120mm, 92mm)
one keyboard and mouse (they need power too)

Is 300W enough for me? (I mean all of the stuff in my pc run at the same time under load.)

 

[amdskip]

You should be fine with that setup. No overclocking correct?

 

[Falloutboy]

you should be ok....but if it were me I would get something with a bit more power something like a Enermax 350Watt for $45 it has alot of amps on the 12V rail which is where the heaviest draw nowadays is. this way you have a little headroom just incase you need another HD or get another optical

 

[NervousNovice]

Originally posted by: Falloutboy525
you should be ok....but if it were me I would get something with a bit more power something like a Enermax 350Watt for $45 it has alot of amps on the 12V rail which is where the heaviest draw nowadays is. this way you have a little headroom just incase you need another HD or get another optical

I will only use the above setup for a few months and then give it to my sister. She knows nothing about pc and will certianly not add anything into it. So I just need to make sure that setup is not pushing the 300W psu to its limit, resulting in instable voltage, shut down, etc.

 

[NervousNovice]

Zalman has a newer 300W model that has a 18A on the 12V rail. Maybe I should go for that one.