🚀 go-pugleaf

In comp.arch Nathan Mates <nathan@visi.com> wrote:

:    Caching is most important when the internal bandwidth of the CPU is
: significantly faster than the external memory bandwidth. If you've got
: a very good memory throughput system, you don't need half as much
: cache.  With a nice wide (128 bit? more?) rambus setup, you can shovel
: in huge amouts of data into the processor nearly as fast as it wants.

Caches reduce both latency and bandwidth.  For a graphics rendering engine,
bandwidth is more important than latency.  For a PC, it will usually be a
matter of latency and not bandwidth.

:    Remember, in consoles, they can design nice fat busses to shovel
: around more data, while PCs tend to be more limited in their memory
: i/o setups due to compatability reasons. 

I can't understand why a PC would be limited in i/o setups for anything 
involving compatability.  Could you give an example?  

Mark

: Nathan Mates
: --
: <*> Nathan Mates - personal webpage http://www.visi.com/~nathan/  
: # Network Programmer, Battlezone 2: see http://www.pandemicstudios.com
: # NOT speaking for Pandemic Studios or Activision, ONLY myself
: # "What are the facts, and to how many decimal places?" -R.A. Heinlein

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