🚀 go-pugleaf

In article <1994Apr11.062202.14307@selway.umt.edu>, sdpcart@selway.umt.edu (Scott Purl) writes:
|> If the memory speeds are different (70ns and 80ns, for example), then 
|> you're asking for trouble.  Get the manual for the motherboard and 
|> install the speed memory that it specifies.  Mixing speeds leads to 
|> memory parity errors, which leads to all sorts of wierd things 
|> (spontaneous reboots and hangs, for example).  A 10ns difference may not 
|> seem like a lot to you, but since light travels about 9.3 inches in a 
|> nanosecond, you'd agree that 93 inches of light travel is quite a bit of 

Huh?? what does light have to do with anything?  does he have the first fibre-optic computer in the world or what.

If I recall correctly the speed of a simm is the MAX speed it has been tested good for.  that means that it can be run as a slower rate. i.e. a 70ns SIMM can run fine at 80ns.  but that is just what I have heard.



|> distance in that 10ns time frame, especially considering the physical 
|> dimension of your RAM SIMM's.
|> 
|> Installing more memory will slow down your boot up time because your 
|> system will want to check all this memory (and so will HIMEM.SYS in 
|> MS-DOS 6.2).  Slower there, faster elsewhere.
|> 
|> Oh, the rough rule for external cache RAM is 128k for a 386, 256k for a 
|> 486, and 512k for a Penitum.  That's a rough rule, though.  The average 
|> user will do okay with that, but anyone reading this ain't a normal user, 
|> so y'all might pop over the line.


big smile  : ^ )