加新ram卡問題

我想加個新既1GB ram卡
但係我吾知自己部機個底板可以加邊一隻先得
同埋又吾知邊度有得買平又好用既底板
我部機本身有2張512
下面係我部機既資料

CPU-Z 1.44 report file

Processor(s)

Number of processors 1
Number of cores 1 per processor
Number of threads 2 per processor
Name Intel Pentium 4 524
Code Name Prescott
Specification Intel(R) Pentium(R) 4 CPU 3.06GHz
Package Socket 775 LGA
Family/Model/Stepping F.4.9
Extended Family/Model F.4
Core Stepping G1
Technology 90 nm
Core Speed 3058.9 MHz
Multiplier x Bus speed 23.0 x 133.0 MHz
Rated Bus speed 532.0 MHz
Stock frequency 3066 MHz
Instruction sets MMX, SSE, SSE2, SSE3, EM64T
L1 Data cache (per processor) 16 KBytes, 8-way set associative, 64-byte line size
Trace cache (per processor) 12 Kuops, 8-way set associative
L2 cache (per processor) 1024 KBytes, 8-way set associative, 64-byte line size

Chipset & Memory

Northbridge Intel i915P/i915G rev. B1
Southbridge Intel 82801FB (ICH6) rev. 04
Memory Type DDR2
Memory Size 1024 MBytes
Memory Frequency 199.5 MHz (2:3)
CAS# Latency (tCL) 4.0 clocks
RAS# to CAS# (tRCD) 4 clocks
RAS# Precharge (tRP) 4 clocks
Cycle Time (tRAS) 11 clocks

System

System Manufacturer Dell Inc.
System Name Dell DV051
System S/N BXXG4BX
Mainboard Vendor Dell Inc.
Mainboard Model 0WJ770
BIOS Vendor Dell Inc.
BIOS Version A04
BIOS Date 04/04/2006

Memory SPD

Module 1 DDR2, PC2-4300 (266 MHz), 512 MBytes, Samsung
Module 2 DDR2, PC2-4300 (266 MHz), 512 MBytes, Samsung

Software

Windows Version Microsoft Windows XP Home Edition Service Pack 2 (Build 2600)
DirectX Version 9.0c