PC100 or PC133 memory on PC66 motherboard

[Guest]

I have an ASUS P2L97 motherboard, 66MHz bus, chipset 440LX.
It has 3 slots for SDRAM memory (3.3V, unbuffered, DIMM168). I would like to know if it is possible to use PC100 or PC133 memory on it without having any problems.

 

[winglesslight]

as iknow, pc133 will give system error on pc66mobo, pc100 could work. some sdrams are pc66/100 compatible. but will work as slowest compatible speed with other rams.

 

[Crashman]

Actually you can-any board that can support the newer style dimms can-the LX chipset is compatable. Compatability problems with older chipsets were limmited to 1)inability to access the full amount of memory in high-capacity chips, 2)EDO dimms instead of SDRAM 3)Size limitations. As far as I know the LX exhibits neither of the first two problems and has a maximum of 128MB per slot, allowing you to use 128MB PC133 modules.

Suicide is painless...........

 

[Guest]

i have pc133 memory in an old asus board (p2b) that runs at 66 fsb. no problems. the pc133 was cheap so i bought it.

 

[Guest]

Assuming that both modules are compatible, if they're both the same price why not... if not, unless you plan on upgrading to a Coppermine, why pay the extra cash. It's not like you'll notice a diffrence only running the ram @ 66. Cause no matter which one you buy, ultimately, that ram is slowed down to 66.

 

[winglesslight]

my dell dimension xps d300 p2 300 on pc66 mobo doesn't boot at all with pc100 or pc133 sdram

 

[Crashman]

First possibility, you might have ECC ram which cannot be mixed with non-parity
Second Possibility-Older Intel chips are unable to access large bit chips (4x and higher), resulting in an unread problem (32MB become 4MB, etc.)
Third Possiblity-Older Intel chipsets cannot access SDram above a certain size or size-per side (usually 32 or 64 MB).

Suicide is painless...........

 

[winglesslight]

Crucial and Dell technicians say it's the dell pc66 mobo. I have non parity non ecc sdram. I have 440lx intel chipset. I have 128*3 dimm slots. I can run crucial 128mb pc66 ram on it.

 

[Crashman]

Wow, and they didn't give you an explanation of what was different? I hate that, at least Intel was nice enough to say why certain ram would not work with some of their older chipsets.

Suicide is painless...........