What Wattage PSU do I need?

[OzyOly]

Ok, I'm deciding between which PSU to get;

Seasonic 600w and Seasonic 500w from this site.

Here are my specs;

Athlon X2 4800+ (2.4GHz, 2Mb Cache)
DFI LANPARTY Expert Board skt939 (On this site)
2GB (2 x 1GB) Corrsair XMS3500LL Pro TwinX RAM
ATI Sapphire X1900Xt-X 512Mb GDDR3 Graphics card.
Hitachi 250GB SATA 2 7200rpm (may get another Harddrive soon after 10k rpm may be?)
Auidigy 4 sound card
Wi-fi network card (125mbps)
DVB-T TV card.
2 blue cold cathodes
4 SilenX (ultra quiet) 80mm fans (2 of those are 4 LED fans)

Extras if you wanted to know;

2.1 32w speaker set
Samsung 19" syncmaster 4ms TFT.
Biometric keyboard and wireless optical mouse (m$)
Xp pro (may get MCE 05)

Anyway will I be fine with the 500w or should I go for the 600w?

Thanks guys.

Also will this machine be able to run Halo for pc at full settings? (That was a serious question by the way, halo doesn't run so good on my notebook.)

Thanks in advance.

 

[lemonkettaz]

id go 600, just to be safe

 

[syke]

i'd say 550W at least...

 

[OzyOly]

Ok. 600W PSU it is.

Also I heard the seasonic PSU's are supposed to be very quiet. Is this true? I don't want to go for a £100 PSU if it's going to be as noisey as an xbox 360.

 

[Explicit]

Ok. 600W PSU it is.

Also I heard the seasonic PSU's are supposed to be very quiet. Is this true? I don't want to go for a £100 PSU if it's going to be as noisey as an xbox 360.

Indeed, they are very quiet. But it's not modular, which is the only fallback. And people say the cable lengths are short for a full tower case.

 

[OzyOly]

Indeed, they are very quiet. But it's not modular, which is the only fallback. And people say the cable lengths are short for a full tower case.

I have a full tower case. Hmmmm.

Do you sujest any particular high end psu that is very quiet then other than the seasonic.