RAM performace: 64bit vs high density chips (128, 256, whatever)

[Mday]

all else equal, does anyone know if and by how much of a performance gap exists between them?

 

[sparks]

I have not seen any cas2 high density ram, I think that is the only difference. I have some high density stuff in my sencond PC and Sandra memory bench shows little diff.

 

[TunaBoo]

AFAIK - if your chipset supports HD ram, they will preform the same.


I could be wrong tho.

 

[Kingofcomputer]

all 168pin sdram is 64bit bus.

the density of the ram chip is from 1Mbit to 2, 4, 8, 16, 32, 64, 128, 256, ...

a regular double side 256MB DIMM consists of 16 128Mbit chips, each is 16x8, which is 4 banks x 4Mbit x 8.
so-called high density 256MB DIMM consists of 16 128Mbit chips, each is 32x4, which is 4 banks x 8Mbit x4.
both are same density chip, just different architecture - 8bit vs 4bit width.