Official PC100 SDRAM standard is 8ns, PC66 is 10ns. Most cheap PC133 RAM is
7.5ns, good quality PC133 should be 7ns, you can get 6ns SDRAM which is
marked as PC150 sometimes.

The BIOS setting you should look for is not DRAM setting (doesn't do
anything because you use SDRAM), but SDRAM setting, you should change it to
10ns (slow PC100 down to PC66) for all memory banks. If there is a setting
for SDRAM latency, don't forget to change it to 3. The basic is: set your
RAM at lowest speed, if you experienced problem at high speed.

Please also check your mobo manual to ensure that it can use 64M single
stick of RAM, some old mobo don't like "large" RAM stick, my old mobo has
limitation to 64M max size of single RAM stick. Please note that there are
compatibility problem between RAM and mobo too, not all RAM will work for
all mobo.

Jun Qian

----- Original Message -----
From: "meijin" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, October 04, 2000 1:33 PM
Subject: [PCBUILD] Shuttle HOT-569 mobo & PC-100 RAM


> Can anyone tell me what I need to do to get an older Shuttle HOT-569 mobo
> to accept PC-100 RAM? Currently, I have 3 sticks of 32 meg each of PC-66
in
> there. I have a stick of 64 meg PC-100 that I would like to put in there.
> But, every time it boots, it gets a different memory size reading and then
> usually locks up immediately after post.
>
> I know that slot 3 cannot be used when using a 64 meg stick with 16 chips
> on it. But I think a BIOS setting needs to be changed to get the PC-100 to
> work.
>
> ps - the PC-100 RAM is probably 70ns, yes?
>

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