GhislainG :
You didn't provide info about your current module other than it runs at 533MHz and 4-4-4-12 timings. The SPD tab would be useful as it includes the part number. What is your PC or motherboard model? If you don't know, the Mainboard tab should help.
motherboard=
Motherboard
Chipset Vendor Intel
Chipset Model i915P/i915G
Chipset Revision B1
Southbridge Vendor Intel
Southbridge Model 82801GB (ICH7/R)
Southbridge Revision A1
BIOS
Brand Phoenix Technologies, LTD
Version 6.00 PG
Date 4/10/2012
PCI Data
Slot PCI
Slot Type PCI
Slot Usage Available
Bus Width 32 bit
Slot Designation PCI0
Characteristics 5V, PME
Slot Number 0
Slot PCI
Slot Type PCI
Slot Usage Available
Bus Width 32 bit
Slot Designation PCI1
Characteristics 5V, PME
Slot Number 1
Slot PCI
Slot Type PCI
Slot Usage Available
Bus Width 32 bit
Slot Designation PCI2
RAM=
RAM
Memory slots
Total memory slots 4
Used memory slots 1
Free memory slots 3
Memory
Type DDR2
Size 2048 MBytes
Channels # Single
DRAM Frequency 265.9 MHz
CAS# Latency (CL) 4 clocks
RAS# to CAS# Delay (tRCD) 4 clocks
RAS# Precharge (tRP) 4 clocks
Cycle Time (tRAS) 12 clocks
Physical Memory
Memory Usage 71 %
Total Physical 2.00 GB
Available Physical 579 MB
Total Virtual 4.00 GB
Available Virtual 2.31 GB
SPD
Number Of SPD Modules 1
Slot #1
SUMMARY-
Operating System
Windows 7 Professional 32-bit
CPU
Intel Core 2 Duo E7300 @ 2.66GHz 47 °C
Wolfdale 45nm Technology
RAM
2.00GB Single-Channel DDR2 @ 265MHz (4-4-4-12)
Motherboard
Graphics
W1941 (1360x768@60Hz)
512MB NVIDIA GeForce 8400 GS (ZOTAC International) 50 °C
Storage
232GB Seagate ST3250310AS ATA Device (SATA) 42 °C
Optical Drives
HL-DT-ST DVD-RAM GH22NP20 ATA Device
Audio
Realtek High Definition Audio
CPU=
CPU
Intel Core 2 Duo E7300
Cores 2
Threads 2
Name Intel Core 2 Duo E7300
Code Name Wolfdale
Package Socket 775 LGA
Technology 45nm
Specification Intel Core2 Duo CPU E7300 @ 2.66GHz
Family 6
Extended Family 6
Model 7
Extended Model 17
Stepping 6
Revision M0
Instructions MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, Intel 64, NX
Virtualization Not supported
Hyperthreading Not supported
Bus Speed 199.4 MHz
Rated Bus Speed 797.7 MHz
Stock Core Speed 2666 MHz
Stock Bus Speed 266 MHz
Average Temperature 47 °C
Caches
L1 Data Cache Size 2 x 32 KBytes
L1 Instructions Cache Size 2 x 32 KBytes
L2 Unified Cache Size 3072 KBytes
Cores
Core Speed Multiplier Bus Speed Rated Bus Speed Temperature Threads
Core 0 1994.2 MHz x 10.0 199.4 MHz 797.7 MHz 47 °C APIC ID: 0
Core 1 1994.2 MHz x 10.0 199.4 MHz 797.7 MHz 47 °C APIC ID: 1
SUGGEST ME A DDR2 RAM MODEL WHICH IS COMPATIBLE ^_^ PLEASE SIR