Maybe, but I don't know of any boards for C2Ds that have DDR RAM slots. C2D are generally supported by DDR2 and DDR3 RAM. I think gigbyte made a C2D board with slots for both types of DDR, but you could not use both types together. DDR RAM generally supports Intel socket 478 boards (and some AMD CPUs).
There is one motherboard out there that i know of that will support both DDR1 and 2 on the 775 socket. It's an ASRock. ASRock 775Twins-HDTV. Unless you have a motherboard that specifically states that it will run DDR1, then the modules will not even physically fit.
The memory controller on 775 boards like the C2Duo is on the motherboard, not the CPU, so it's the motherboard that determines the supported memory standard(s). Anyway, there are boards that will allow you to use DDR1 or DDR2 memory, but I don't believe there are any that would allow you to use both at the same time. I should also point out that boards that support two memory standards offer slightly lower performance than boards that only support one. So, the same Core 2 Duo in a board that accepts both DDR1 and DDR2 would perform worse with DDR1 than a board that only supported DDR1, and the same goes for DDR2.
hi,im using HCL motherboard,now currently im using ddr2 ram in it but i also hav ddr1 each 1 gb and i hav 2 slots for both ddr1 and 2 ur sayin dat it wil not support then wat is d purpose of giving such slots,im using p4 processor now if i upgrade to core 2 duo whether it wil support or not or any other suggestions
No, it won't make a difference what your CPU is -- you can still use either kind of memory.
If a motherboard has two different types of memory slots, that almost always means it can support either one, but not both at the same time. I don't really think it's that great of an idea either, but maybe some people buy boards like that because they want to keep using their old RAM for the short term and upgrade to new RAM later.
i hav an intel pentium 4 processor wid DDR 2 memory..i wanted to upgrade it to core2duo..but i juz wanted to buy the core2duo chip..is that possible??or do i hav to buy a new motherboard too???will it work on a DDR 2 memory motherboard??