"Morten Nielsen" <Gzus||removethis||@worldonline.dk> wrote in message
news:3f82c2bc$0$13184$edfadb0f@dread15.news.tele.dk...
> > If you're not planning to overclock, PC3200 is all you need. There are
> some
> > good articles on which brands are compatible and perform best on the
875P
> > Canterwood chipset used on the IC7 in the memory section at
<font color=green> > > <a style='text-decoration: underline;' href="http://www.anandtech.com</font" target="_blank">www.anandtech.com</font</a>>
>
> What if I have plans to overclock ? Then I need to have something faster
> than PC3200 right ?
>
> > A good all-around and relatively inexpensive suggestion is
Crucial-Micron
> > PC3200. I'm not sure about availability where you are.
>
> I'm from Denmark, and the choices are not many. But Geil, Kingston, OCZ,
> Corsair are available. And then some unknown one like A-data and
Perfomance.
> But I think it is difficult to see the differnce betweens these, other
than
> the price.
>
> > I'm using Buffalo Technology PC3700 on my IC7 and it's working very well
> at
> > 220 mhz, which allows me to overclock a P4C 2.4 to 3.3ghz using the 5:4
> > ratio -- 275 fsb.
>
> I'm not quite into how the ratio works, but it is the ratio bwteen the FSB
> and the RAM ? I have heard that the ratio must be 1:1 to get the perfect
> perfomance ?
>
> Morten Nielsen
It's a complicated equation, and the answer depends on the cpu you buy and
the money you have to spend.
In my case, I bought an inexpensive P4C 2.4. I probably would not have been
able to get much beyond 255-260 fsb at 1:1, even at CAS 3 with the loose
timings specified for most PC4000. In other words, I would have been
hard-pressed to get the cpu much beyond 3 ghz.
By running 5:4, I could keep the ram running CAS 2 at 220 mhz and push the
cpu all the way to an fsb of 275 for 3.3 ghz. That gave me a system that
will beat any stock 3.2 at 1:1.
If you do buy a P4C 3.0ghz cpu, then even at 1:1 you probably have no need
for PC4000 memory. Do the math. At the memory's rated speed of 250 mhz with
a multiplier of 15, you'd have to get the cpu to 3.75ghz, which would be
beyond the expected OC limit for most air-cooled systems.
My advice is to decide before you order the parts what goal you hope to
reach, and make sure the cpu and ram will work together to achieve it.<!-- ~MESSAGE_AFTER~ -->
>> Stay informed about: RAM for Abit IC7 MAX3 - P4 3,0GHz - 800 FSB