🚀 go-pugleaf

In message <4kmop1$2f7g@news-s01.ny.us.ibm.net> - boisjol@ibm.net   (Yves Boisj
oly) writes:
:>
:>In <4kk4tf$ksq@news.aros.net>, John Brush@aros.net writes:
:>>In <4khecg$3g8e@news-s01.ny.us.ibm.net>, boisjol@ibm.net   (Yves Boisjoly) writes:
:>>>I have 2 16M SIMM in my Pentium 100Mhz. One is 60ns and the other is 70ns. The 
:>>>thing that you have to care about is which one you will put in the first bank!
:>>>
:>>>You must put the most rapid one in the first bank. If you put the 70ns in the first
:>>>bank, all your memory will works at 70ns. If you put the 60ns in the first bank, 
:>>>and if with luck, the 70ns can work at 60ns, your system will work at 60ns.
:>>>If not, your system will simply switch at 70ns!
:>>>

That is a BIG NO-NO!!!

The recommended thing to do is put the SLOWEST memory in the first bank!  The 
reason is this: the fast chip can always slow down to the speed of the slow 
chip, but the slow chip can't keep up with the fast one...

OS/2 will access ALL memory at the speed of the chips in bank 1.  So if you 
have the 60ns chips in bank 1, OS/2 will access the 70ns chips at 60ns... and 
you'll probably bomb.

It's never recommended to mix n match speeds, but if you have to, follow the 
above rule.

BTW - when marching, the military always puts the smallest guys in front, so 
that the big guys won't run away from the small ones.  Same reasoning.  Slow 
in front, fast in back, and for much the same reason.

Bill
Team OS/2

I got this info from page 804, Inside OS/2 Warp