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On 6 Aug 1998, Brian Edmonds wrote:
> Kevin Chu <kevin@portal.ca> writes:
> > According to a technician at Frontier, there is "no such thing" as a
> > 3.3 V DIMM with 5 V signal tolerance, and there's no such thing as a 5
> > V DIMM, and in any motherboard if you install both SIMMs and DIMMs,
> > you'll damage components and the motherboard.
>
> My understanding is that most of this is bullshit. I'll grant that PCs
> may not use 5V DIMMs, given my lack of experience with newer MBs using
> them, but I bet they exist for some platforms. Sun sure has a wide
> array of wierd memory -- practically every older model uses a different
> type.
>
> As for mixing SIMMs and DIMMs, I'd bet that depends on the MB. I've
> seen some that say no, and others that say yes, but you may not like
> it. My impression is that even when it does work, the performance is
> less than stellar. I'd say if your MB says you can do it, give it a
> try, but then I'm not the one paying for the experiment either. :)
>
> > I am not able to install more than 64 MB to run the cache checking
> > program he provided me (because of the reason above), but according to
> > the Asus website the VX chipset can cache only 64 MB.
>
> In which case you may as well not bother. From what I've heard if you
> get into non-cachable regions you might as well be swapping.
>
> > No matter how I dick around with the CMOS settings, all the system
> > sees is 16 MB.
>
> Interesting. I've installed larger than speced SIMMs in machines and
> they either ignored them, or recognized them as smaller sizes. I'd bet
> that it's either mislabelled as you guessed, or there's something about
> that DIMM that your MB doesn't recognize.
>
> > I finally decided that the cheapest way to get BRU PE is to get Red
> > Hat official 5.1.
>
> This is a backup utility if I remember right? Never seen the point for
> a very small number of machines. I've done just fine with cron and tar.
>
> Brian.
>
>