Please could somebody explain the difference between the different memory RAMs :

-DDR DIMM 512 Mo 266 MHz DDR 266
-DIMM SDRAM 512 Mo 133 Mhz Sdram Pc133
-DIMM DDR 512 Mo 333 MHz Non ECC DDR 333
-DIMM DDR 512 Mo 400 Mhz DDR 400

Thankyou very much ...

Donut

DDR = Double Data Rate. A method of reading and writing to RAM at twice the speed as SDRAM = Synchronous Dynamic Random Access Memory.

SDRAM is the older type and is not used in newer motherboard. You cannot mix SDRAM and DDR ram and you cannot put a DDR module in a slot designed for SDRAM as the pin count is different.

DIMM = Dual in-line memory module. Describes the physical contruction of the memory module. It means it has chips on both sides of the module.

The numbers 133,266,333 and 400 MHz relates to the speed of the memory. The faster the better but your motherboard has to support the faster speed. You can use higher rated memory in a motherboard that is designed for lower rated memory but it will only work at the lower speed.

ECC = Error correcting code. A method of detecting minor memory errors and correcting them.

Stuart

Thankyou

Donut

Slight correction...they are ALL SDRAM.

SDR-SDRAM (Single Data Rate) is PC66, PC100, PC133. It has 168-pins.

DDR-SDRAM (Double Data Rate) is PC2100 (DDR266), PC2700 (DDR333), PC3200 (DDR400). It has 184-pins.

ASUS A7N8X-X
Athlon XP 1800+
8.5 x 200MHz
1024MB PC3200 2.5-3-3-7
Asus A9550GE/TD 128MB
WinME/WinXP Pro SP1

I bought a 512Mb 333 MHz DIM DDR
PC2100 - 266 Mhz compatible

What kind of computer would I be able to use it on ?

I had an old computer on which I installed XP and I had to RAM memory cards in it ... 64Mb and 32Mb and a t the bottom of them there are 2 slots and on the one that I justbought there is only 1 slot so it doesn't fit it my computer.

Does anybody know what brand and which computer it would fit in ?

THankyou !

Michael

Donut