1G DDR RAM QUESTIONS, THANKS IN ADVANCE?

Question

I bought some ram for my PC they are all DDR 184 pin 1 G.I am using it in a Pentium 4 machine with Windows xp pro. There are 4 RAM slots and PC can handle up to 4 Gigs of ddr ram.
Only one works, now is it because some are a little different? Or do you think it’s because the chips are defective. Here is a description of the RAM
1 QTY-1GB Desktop Memory DDR-400 PC-3200 CAS 3 184 pin - worked
1 QTY-1 GB DDR PC2100 single chip Samsung Memory – did not work
2 QTY-PC3200 1GB DDR SDRAM 1 GB PC 3200 DDR400 1G RAM 184 pin - neither of these worked. :(
Thanks!!

Answer 1

could be a few things,



Motherboard doesn't support the RAM - maybe you need a BIOS update



or



Motherboard is struggling with the different speeds and latencies. (reset CMOS)



Or they could be bad.



I would try them one at a time to see which ones work.



It is really HIGHLY recommended that you install only supported MATCHED sets of RAM into your PC

Answer 2

Older boards don't like "mix & match" (putting 400 with 333) or mis matching makers. Latency either. Its also a matter of how much your mother board can take...if 2GB is the boards limit then fill all the slots past 2GB wont help. If it is a "factory made" computer check what the original RAM was that came with the computer and get the exact same make/model. Often they have things set to only accept a certain type or speed. If your using an OS in 32 bit you wont see more than 3.25GB of ram.

Answer 3

No they are 2 diverse Sizes a Tech individual advised be this a whilst returned think of or a street and a throughway or what ever one is largely somewhat greater than the different ( or asserting The DDR wont fit in a DDR2 Motherboard. -Tornadochas3r

Answer 4

RAM chips need to be matched. That includes down to the latency in it.