🚀 go-pugleaf

On Sun, 3 Mar 1996 11:55:30 -0500, Thomas Hong <th...@columbia.edu>
wrote:

>On Sun, 3 Mar 1996, John Hileman wrote:
>
>> Oh no!  Are you sure?  I am currently running a 486 DX4-100 and just
>> this week bought another 8 megs of 70ns memory to take me to 16 megs.
>> I'm planning on moving to a P133 this summer and wanted to take the
>> memory along. 
>
>Hi John,
>
>	Pentiums running at 90, 120, 150, and the upcoming 180mHz speeds
>all have a 60mHz processor bus linking the CPU to memory (notice that 90,
>120, 150 and 180 are all divisible by 60).  At 60mHz, 70ns RAM is
>sufficient.  Pentiums running at 100, 133, 166 and the upcoming 200mHz
>speeds have a faster 66mHz processor buses, and will need faster RAM for
>optimum performance-- 60ns. 
>
>	On some good Pentium motherboards such as the Asus P55TP4XE
>Triton-chipset motherboard, you can indeed use 70ns RAM with a
>66mHz-bussed Pentium because the BIOS will automatically set the right
>wait states for you.  In fact, the Asus TP4XE will take any 72-pin 
>SIMMs--  Parity, nonparity, EDO, normal FPM, 60 or 70ns.  =)
>
>	Right now your main concern should be the type of SIMMs in your
>DX4-100.  If they are 30-pin, then your chances of using them on a new
>Pentium is 50/50-- Some people reported success using SIMMverters to plug
>those 30-pin SIMMs into the Pentium board's 72-pin SIMM sockets, but it
>has never worked for me when I tried. 
>
>> If it is true that 60ns is required, maybe my vendor would agree --
>> maybe for some $$ -- to exchange the 70 ns 8 meg simm for a 60 ns unit. 
>> Would my older 70ns simm and a new 60ns simm happily coexist in my
>> existing DX4-100 system? 
>
>	I have heard many conflicting stories on whether mixing and 
>matching SIMMs of different speeds on one system will work.  Some say it 
>works perfectly, others say they got all sorts of screwy things 
>happening.  So basically if you want to, you'd have to do it at your own 
>risk.
>
>	Again, as I said a good Pentium motherboard can use 70ns SIMMs 
>even with a 66mHz-bussed Pentium processor, but it works best only if you 
>have 72-pin SIMMs.
>
>TRH

Heh, So can Tyan TitanIII and it comes with 5ISA and 4PCI(NO SHARED
SLOT) slots not 3ISA and 3PCI and 1PCI/ISA(SHARED SLOT).  On top of
that Tyan gives you 3 simm banks.  Frigging Asus gives you 2 banks.

I wish I'd had waited a little longer, Tyan's coming out with the
Tomcat board which features Triton II chipset. It comes with 4 simm
banks!