Below are 3 RAM memories together with their part numbers.
1) Adata - SU1U400A1G3-B
2) Buffalo - DD4003-1G/BJ
3) Patriot - PSD1G400
All of them are 1GB 184-Pin DDR400 (PC 3200) non-ECC SDRAM Desktop Memory.
In theory, all the 3 memories should be compatible with my Dell PC. However, in practice, you never know.
Could you please tell me whether they are compatible with Dell Dimension 1100? I have made a research online but there was no information about whether the memories are compatible with Dell Dimension 1100 or not.