No. SDRAM and DDR SDRAM are not compatible with each other.
Ddr sdram
The term DDR SDRAM refers to the phrase "double data rate synchronous dynamic random access memory". DDR SDRAM is simply a faster version of SDRAM in which data travels at a double rate. If your computer specs say that it uses DDR SDRAM it can take DDR SDRAM, but not SDRAM. DDR is 184 pins and has a notch in the bottom near the center and you will be unable to put DDR in an SDRAM mother board and also unable to put SDRAM in a DDR motherboard. Recently a new type of RAM has been introduced to market called DDR2. DDR2 is its own type and will not fit into a DDR motherboard. Hope this helps. Peace.
DDR SDRAM uses 184 pins.
No.
In order to upgrade SDRAM with DDR, you will need to replace your motherboard. DDR uses a different slot than SDRAM, so if your motherboard is using SDRAM currently, you will most likely have to replace your motherboard in order to make your system support DDR.
No.
Data path widths for DDR SDRAM can be at least 8, 16, 32, 64 and 72 bits, according to a DDR SDRAM contoller chip manufacturer.
No. SDR SDRAM and DDR SDRAM modules are not interchangeable.
Hundreds of motherboards are compatible with DDR SDRAM. It would be impossible to provide a comprehensive list.
No.
No you cannot the ECS P4VXASD2 supports the following:Two 184-pin 2.5V DDR SDRAM (DDR266/DDR200) Maximum: 2GB DDR or SDRAM (Buffered) / 1GB DDR or SDRAM (Unbuffered)