我這電腦最高可加至多少記憶體?

以下係主機版一部分的資料...
我睇唔明所以問問大家...


產品規格







中央處理器
Socket 478 for Intel Pentium 4/Celeron
Intel Hyper-Threading Technology ready
Supports Intel Prescott CPU

晶片組

Intel 865PE
Intel ICH5

前側匯流排

800/ 533/ 400 MHz

記憶體
- Dual Channel Memory Architecture
- 4 x 184-pin DIMM Sockets support max. 4GB PCPC3200/2700/2100 non-ECC DDR SDRAM memory
- ASUS Hyper-Path Technology

擴充插槽
1 x AGP8X/ 4X (0.8V, 1.5V only)
4 x PCI

儲存裝置 / 磁碟陣列
2 x UltraDMA 100
2 x Serial ATA

音效功能
ADI AD1888 SoundMAX 6-channel CODEC
support S/PDIF out interface

網路功能
Realtek 8100C 10/100 Mbps Ethernet controller

超頻功能
AI Overclocking:
- Intelligent CPU frequency tuner
- ASUS JumperFree
- SFS (Stepless Frequency Selection) from 100MHz up to 400MHz at 1MHz increment
- Adjustable FSB/DDR ratio. Fixed AGP/PCI frequencies.
- ASUS C.P.R.(CPU Parameter Recall)

獨特功能
Power Loss Restart
support S/PDIF out interface
Chassis Intrusion
ASUS EZ Flash
CrashFree BIOS 2

背板 I/O 埠
1 x Parallel
1 x Serial
1 x PS/2 Keyboard
1 x PS/2 Mouse
1 x SPDIF out
1 x Audio I/O
4 x USB 2.0
1 x RJ45

內建I/O連接孔
2 x USB 2.0 connector support additional 4 USB 2.0 ports
CPU / Chassis FAN connectors
20 pin ATX Power connector
4 pin ATX 12V Power connector
Chassis Intrusion
S/PDIF out connector
CD / AUX audio in
Front Panel Audio connector
COM2 connector
GAME/MIDI connector

BIOS
3 Mb Flash ROM,AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.3

管理能力
WfM 2.0,DMI 2.0,WOL by PME,WOR by PME, Chassis Intrusion

支援光碟
Drivers
ASUS PC Probe
Trend Micro PC-cillin Anti-virus Software
ASUS LiveUpdate Utility

相關配件
User's manual
2 x Serial ATA cable
1 x UltraDMA 133/100/66 cable
FDD cable
I/O shield

體積
ATX Form Factor 12"x 8.2"(30.5cm x 20.8cm)

我想加ram打機應該+幾多呢??
同埋要點樣買ga??
應該要買邊d記憶體先岩??
thx...