64mb pc100 help a 256mb pc133 system at all?

[stealthbig]

Well, I found a 64mb pc100 module lying around, and I put it in my system that currently only had 1 256mb pc133 module. I did a pcmark 2002 test and then took out the 64mb pc100 module, and did the test again, and with the pc100 module i got a score that was 30 higher with the 64mb chip in.. Now im wondering, i thought putting a pc100 chip in a system going at pc133 would slow the whole pc to 100mhz.. Is this true? Im wondering if i should really keep that 64mb module in, or are those test results somehow misleading? Any help would be great.

 

[sturm]

Unless you changed the memory speed in the bios you were running the 64mb 100 stick at 133 speeds.
Unless the 64meg was made before 133 came out its probably a 133 stick that was marked as 100 so they could charge u more for it.
I know memory is backward compatible but the reverse could be true for somesticks, ie overclocking.
Most 100 sticks of memory are just 133 sticks that didnt completly test right, but tested fine at 100 speeds.
Sooo. Leave it in as long as you arent having any problems.

 

[Crashman]

That would really depend on your CPU and chipset. If your CPU has a 100MHz bus, you slowed nothing down (unless the memory was running asynchronously at 133MHz). This would be the case with most Celerons and Durons, as well as all PII's, some PIII's, and some Athlons. Oh, and let's not forget the K6-2, the C3, etc.

If you were running a 133MHz bus speed, the CPU could run asychronous bus at 100MHz with the i810, i815, and some VIA chipsets.

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