Linux - subir potencia a mi pc

hola queria saber como subir la velocidad del procesador (de forma que no se queme)
y la ram y ese tipo de cosas tiene ...

Pentium III Coppermine a 800 mhz
644 mb de ram
kernel 2.6.32-5-686 (i686)
con el comando sudo lspci |more me dice esto
00:00.0 Host bridge: VIA Technologies, Inc. VT82C693A/694x [Apollo PRO133x] (rev
44)
00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598/694x [Apollo MVP3/Pro133x AG
P]
00:07.0 ISA bridge: VIA Technologies, Inc. VT82C596 ISA [Mobile South] (rev 23)
00:07.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/
C PIPC Bus Master IDE (rev 10)
00:07.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
(rev 11)
00:07.3 Host bridge: VIA Technologies, Inc. VT82C596 Power Management (rev 30)
00:09.0 Multimedia audio controller: Ensoniq 5880B [AudioPCI] (rev 02)
00:0a.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
(rev 61)
00:0a.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
(rev 61)
00:0a.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 63)
00:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139
C+ (rev 10)
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV100 QY [Radeon
7000/VE]
BIOS
date 07/27/2000
vendor award software internacional inc (award-bios.com)
version 4.51 pg
placa base
nombre advance-9
vendor Legend QDI
gracias por todo