Re: [FAQ?] More ram=less performance (maximum cacheable RAM)

Holger Lubitz
2001-08-28T14:23:59Z

Richard Gooch proclaimed:

> Er, are you sure about this? The problem isn't the size of your cache,
> it's the size of your TAG RAM. That's a different beast.

Cachable memory area is a function of cache size, tag size and cache
mode (wb or wt - first needs dirty tag, second doesn't). With VIA MVP3
boards for example, cachable memory depends on the size of the cache.
Which is why most of the boards with this chipset had 1 MB level 2 cache
(enough for 128 mb with writeback or 256 mb with writethrough), some
even had 2 MB (for twice that).

Holger