Author Topic: ram question (Read 553 times)

AKHog · « **on:** June 22, 2001, 11:08:00 AM »

Just got 256 mb pc 133 from crucial, i think it was about $60 btw, good deal. Is it better to leave my old 128 mb of pc 100 in with this new stuff (which would make the new stuff run at pc 100 right?) or is it better just to have the 256 pc 133 in there by its self running at 133 mHz???
thanks
-AKHog

AKSWulfe · « **Reply #1 on:** June 22, 2001, 12:30:00 PM »

Typically it isn't a good idea to mix-match RAM that runs at different bus speeds.

I did that with 66mhz and PC100 SDRAM, gave me a very unstable system.

So I got me some more PC100 SDRAM (3x 128MB sticks) and my system is very stable again.
-SW

Defiance · « **Reply #2 on:** June 22, 2001, 01:55:00 PM »

Hiya's,
Ditch the old ram m8, Windose likes 256 meg ram, Above 256 to 512 not much difference as a whole and sometimes above 512 megs you can get probs

Crucial is a damn good make and my 133 and 2100 ddr are fab
133 will do 150 and ddr so far 145

Have Fun

Def

AKHog · « **Reply #3 on:** June 23, 2001, 12:15:00 PM »

ok so i took out the pc100 128 stick and now only have the pc133 256 stick. do i need to change anything in my sys so it knows to run at 133 now? i looked in bios and didnt see anything, is it somewhere else or is it automatic??
thanks
-AKHog

MrRiplEy · « **Reply #4 on:** June 23, 2001, 01:33:00 PM »

In traditional motherboards the memory bus speed is directly linked to the CPU front-side bus speed.

That means if you run a PIII 500Mhz with 100mhz FSB your memory also runs at 100mhz.

If you run 1Ghz PIII with 133Mhz FSB your memory runs at 133Mhz. Simple.

However if you overclock your 500Mhz CPU to 750Mhz, your FSB and memory clock will be 150Mhz. Reversed that means that you won't get _any_ improvement to your system performance from the faster memory unless you start overclocking your computer or buy a CPU with a higher front-side bus speed.

There is an exception to this rule on some newer Abit and Asus motherboards.. On those you can select RAM operation speed independently from CPU FSB.. But if you didn't see any such options in the bios, you can forget them - your mobo does not support such things.

Upgrading from PC100 to PC133 or PC133 to PC150 RAM serves only the overclockers purposes - theyre the ones who need better performing RAM. Non overclocked CPU's are designed and built to use the standard speed RAM which came with your computer when you bought it.

AKHog · « **Reply #5 on:** June 23, 2001, 03:10:00 PM »

well, i got the ram cause i needed more then 128 for that other sim. btw with 256 it runs a *lot* faster, not so much fps but load times, which was where i was having the problems.

so i guess its time to overclock....

-AKHog