Enough wattage?

[Computergen1]

I have a thermaltake 420w psu running the following:

Gigabyte GA-K8NS Ultra-939
AMD Athlon 64 3000+ Venice @ 1.8GHz - Stock Heatsink
2x512 DDR400 GeIL RAM with Heatspreaders in Dual Channel
Leadtek GeForce 6800LE
Samsung Spinpoint 80gb SATA150 HD
Samsung Writemaster DVD AND CD BURNER 16X
Samsung Floppy
4 Case fans (2 of which are hooked up)
CPU Idles around 29-30C

This is the deal, I am pretty sure the answer is yes because I doubt hard drives use much wattage. Around christmas I am receiving a seagate barracuda 7200.8 250GB SATA HD....will my current psu be enough to support the new hard drive...note i am running it as well as my current 80gb one.

 

[abowlofrice]

of course....

 

[Feircepc]

http://www.jscustompcs.com/power_supply/Power_Supply_Calculator.php?cmd=AMD

there u go use that to calculate.

 

[Computergen1]

You mean it will run easily with no power problems? I thought it would but I always check when upgrading a major component in my system like when I changed from a radeon 9600 to a 6800LE.

EDIT- Wow, Fierce...that thing says I should have less than a 300W PSU....I think I should have at least a 400W but that gave me some reassurance.

 

[Feircepc]

lol yea its pretty accurate from what some people tell me. i always get like a extra 100-50watt extra just for upgrading purposes and just in case. thats what i use that for. its a good thing just to double check. plus it doesnt have power for watercooling.