p4c800 deluxe-e ram questions pc3200/3500/3700 and beyond

[smache]

Am i to understand that if you get the matched pairs, twinxms corsair pc
3200 for example, and use it in the p4c800 mb in slots 1 and 3 - that your
ram will now be operating at 800mhz and not 400? If this is correct, than
why would anyone want to get pairs that are not matched, such as the pc3500
corsair that seems to be so popular? or do unmatched pairs in slots 1 and 3
also operate at 800mhz?

What i am looking to do is to bank out all 4 slots, i have heard that the
timing is too fast on the twinpc3200 corsair matched pairs to do all 4 banks
4x512. Any truth to this?

What is the tradeoff between latency and amount of mhz overclocked?

Thanks for the help! I also here that the XMS corsiar 4000 ram is coming out
in a few days, I wonder how this stuff will be for overclocking, since the
consensus seems to be that the pc3500 ram is better than the 3700 ram in
this department.

 

[captzee1]

I'm no expert,but a hobbyist having built 4 to 6 machines a year since the
mid '80's.I'm new to this duel channel thing too so if what I say is off
base I know the guru's will quickly jump in(I'm counting on it).
First off twin modules are not required for duel channel mode.What is
required(desired)is that the modules be of the same brand,type and
size.Based on what I read the individual modules operate at 400Mhz.When in
duel channel mode that somehow equates to 800Mhz(that's the part I'm fuzzy
about).

 

[Ron Miller]

I'm no expert,but a hobbyist having built 4 to 6 machines a year since the
mid '80's.I'm new to this duel channel thing too so if what I say is off
base I know the guru's will quickly jump in(I'm counting on it).
First off twin modules are not required for duel channel mode.What is
required(desired)is that the modules be of the same brand,type and
size.Based on what I read the individual modules operate at 400Mhz.When in
duel channel mode that somehow equates to 800Mhz(that's the part I'm fuzzy
about).

You might be confusing "dual channel" with "double data rate" (DDR).
The CPU can be "quad pumped" so that it runs at 800 MHz with a 200MHz
FSB, but the memory bus in a DDR system, in a standard setup, runs at
an actual rate of 200 MHz with an effective rate of 400MHz ("double
data"). Setting it up for "dual channel" gets a further performance
boost, perhaps 5% in routine use, higher in some very special
applications, but under no circumstances does the memory operate at
800MHz on the P4C800.
Ron