I ordered some RAM SIMMs and was sent some that are the 3 chip type (after insisting on low-profile SIMMs), and I was wondering if anyone knows if they are ok to use in the long run. I installed them and they boot OK. These are fairly low-profile. In general. there are a few different standard heights for SIMMs, and I believe the maximum height you can use is 0.75" for an SE/30. The 3-chip type are even shorter.