memory reading and writing

From: Ludas Matyas (matyasludas_at_freemail.hu)
Date: 07/16/04 

Date: Thu, 15 Jul 2004 15:17:05 -0700

How do I know how much is the Memory bandwidth/ frequency (in MHz
33/66/100/133 etc.) on my PC?

If I have a PC133 SDRAM does it mean its bandwidth is 133 MHz*64-bit=1064
MB/sec = 1.0 GB/sec

Why is reading memory faster than writing it?

I have a CPU of 800 MHz (Pentium III).The frequency ratio is 6x Because I
have a 133MHz RAM.

if I have a code like this:

mov dword ptr[edi], eax

; Then I have 6-1 cycle time here to do something before a memory data can
be read.

mov dword ptr[esi], ebx

Or am I missunderstanding something?

Pushing onto and popping from stack is it also memory reading/writing?

Task switches

Anyone know the answer?

Thanks,

Ludas

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