Thanks for the sites It really came in handy!
In the Motherboard properties/ i got Motherboard ID: Motherboard Name: Dell Dimension 4550 / Ram DDR SDRAM, These are from Memory Bus Properties.. Bus width: 64 bit, Real clock: 167 MHz (DDR), Effective Clock: 333MHz, Bandwidth: 2666 MB/s and The Ram is 512.
I don't know if this is motherboard or something else but it saids SPD Memory Module properties: Model Number: Hyundai HYMD264 646A8J-J, Size: 512 MB ( 2 ranks, 4 banks )
DDR SDRAM, Memory speed : PC 2700 (166 MHz)
I have BIOS Properties and Manufacturer too, But what is BIOS anyway..? I m noob at this sorry
I don't have the exact information about the motherboard it saids go to dell.com to check more.. but couldn't find my comp I guess its kind old..