128MB Mushkin High Performance REV2 PC133 review
Posted by Thomas
McGuire on January 10, 2001
Company:
Mushkin Product:
128MB
Mushkin High Performance REV2 PC133 module
CAS 2 versus CAS 3
The
lower your memory’s CAS rating the better your memory/system should perform.
The Mushkin memory module is CAS 2 rated. The tests below will demonstrate the
effect of CAS 2 V CAS 3 on memory bandwidth.
CAS2 V CAS 3 – 100Mhz
First off to test the effect
at a 100Mhz memory bus speed (Using System/SDRAM
Frequency Ratio – 1/1
at a 100Mhz FSB). The CAS 3 setting is displayed first, then the module
at CAS 2.
As
you can see CAS 2 performs significantly better than CAS 3. In this case, CAS 2
offered a memory bandwidth increase of almost 33% over CAS 3.
CAS 2 V CAS 3 – 133Mhz
Now to test the effect at a
133Mhz memory bus speed (Using System/SDRAM
Frequency Ratio – 3/4 at a
100Mhz FSB). As before, the CAS 3 setting is displayed first, then the
module at CAS 2.
At
a 133Mhz memory bus speed the memory bandwidth performance isn’t quite as
significant between CAS 2 & 3 (Only about 15% or so greater at CAS 2).
It’s interesting to note that the RAM running at 100Mhz @ CAS 2 provided greater
memory bandwidth that running the module at 133Mhz @ CAS 3.
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