can anyone tell me if my pc is running at its best from the cpu-z info below: in particular the memory stick 512mb....

Processor(s)

Number of processors 1
Number of cores 1 per processor
Number of threads 1 (max 1) per processor
Name AMD Athlon XP
Code Name Palomino
Specification AMD Athlon(tm) XP 2000+
Package Socket A (462)
Family/Model/Stepping 6.6.2
Extended Family/Model 7.6
Core Stepping A5
Technology 0.18 um
Core Speed 1670.4 MHz
Multiplier x Bus speed 12.5 x 133.6 MHz
Rated Bus speed 267.3 MHz
Instruction sets MMX (+), 3DNow! (+), SSE
L1 Data cache 64 KBytes, 2-way set associative, 64-byte line size
L1 Instruction cache 64 KBytes, 2-way set associative, 64-byte line size
L2 cache 256 KBytes, 16-way set associative, 64-byte line size

Chipset & Memory

Northbridge VIA KT266/333 rev. 00
Southbridge VIA VT8233 rev. 00
Graphic Interface AGP
AGP Revision 2.0
AGP Transfer Rate 4x
AGP Side Band Addressing not supported, not enabled
Memory Type DDR
Memory Size 512 MBytes
Memory Frequency 133.6 MHz (1:1)
DRAM Interleave 4-way
CAS# Latency (tCL) 2.5 clocks
RAS# to CAS# (tRDC) 3 clocks
RAS# Precharge (tRP) 3 clocks
Cycle Time (tRAS) 6 clocks

System

System Manufacturer
System Name
System S/N
Mainboard Vendor
Mainboard Model VT8366-8233
BIOS Vendor Award Software International, Inc.
BIOS Version 6.00 PG
BIOS Date 11/02/2001

Memory SPD

Module 1 DDR, PC2100 (133 MHz), 512 MBytes, unknown brand

Software

Windows Version Microsoft Windows 2000 Professional Service Pack 4 (Build 2195)
DirectX Version 9.0c