I'm about to build my first system, and right now, I plan on getting a 1 GHz Athlon Tbird paired with the IWill KK266-R board in an Antec SX-830 with a 300-watt power supply.

The other projected parts: 512MB PC133 SDRAM, Maxtor hd, Plextor CD-RW, Creative DVD, SB Live! Platinum, a GeForce2 card, a modem and NIC.

I've read a lot of stories about problems with the Athlon running hot. I am not an overclocker and do not intend to do so with this system. I plan on just using the standard HSF that comes with the retail box of the Athlon, in conjunction with the heatsink (no fan) that comes on the IWill board. The Antec case comes with two rear fans standard.

Will these be enough to cool the system? Or should I get another (or extra) HSF?

Thanks in advance!