Jose E. Dominguez wrote: > > Michael D. Sheridan wrote: > > > Jose E. Dominguez wrote: > > > > > What I've done at times is remove the existing SIMMs from the 0 or 1 bank, install > > > the new ones there and then install the existing in the 1 or 2 bank. Keyword here > > > is "SHOULD" work <g>. > > > > > > Jose > > > > I have four 4MB SIMMs in the four slots. In adding two 16MB > > SIMMs would I not remove the two bottom 4MB SIMMS because they > > must pull down to come out and then install the two 16MB SIMMs > > in their place? > > > > Michael > > Michael here's what I meant. > > Different manufacturers label the banks/slots differently. For clarification purposes > let's say that they're labeled as follows; SIMM 1 and SIMM 2 make up Bank 0, and SIMM 3 > and SIMM 4 make up Bank 1. The CPU will access Bank 0 first right, so I would put the > new RAM on Bank 0 and move the one that was there to Bank 1. > > How you remove/install the SIMMs because of the way they're positioned is not important, > just inconvenient at times. Where you put the best RAM is important. I don't recommend > this but if you had two 4MB SIMMs of 70ns and two 16MB SIMMs of 60ns, you would get the > best performance by installing the 60ns SIMMs on Bank 0, and the 70ns SIIMs on Bank 1. > > This is in a Pentium system, if I remember correctly on 486s SIMM 1 and SIMM 3 made up > Bank 0. I'm sure I'll be corrected if this is not so. The logic behind placing the SIMMs > in the bank that's accessed first by the CPU holds true even if my description of the > Banks is not quite on the money. > > Hope I didn't confuse it more. > > Regards, > > Jose Jose: I have a Compaq 4712 which is a P166 with 24 MB RAM. 8 MB is on the systems board and four 4MB SIMMs are in slots 1-2-3-4 for a total of 16MBs in the slots. To install, I have two 16MB 60ns SIMMS. If I understand you correctly I should remove two of the 4MB SIMMs from slots 1&2 and install the two 16MB SIMMS into slots 1&2. Is that correct? Thanking you in advance, Michael