[RC5] VIA C3

Enoch enojon at ATTGLOBAL.NET
Mon Sep 3 22:02:59 EDT 2001


The C3 has many chip special registers used for "setup"-- I wonder if tweaking values
in those registers might yield a speed boost [using it under OS/2, presently, but may switch
to Linux/x86 or Solaris shortly]

----- Original Message ----- 
From: "Jin-Wei Tioh" <jinwei at tm.net.my>
To: <rc5 at lists.distributed.net>
Sent: Monday, September 03, 2001 7:02 PM
Subject: Re: [RC5] VIA C3


> At 05:13 PM 9/3/2001 -0400, you wrote:
> >at 600mhz, the VIA Cx III performs at 50% of the Intel and AMD equivalent
> >rated chips.
> >
> >It may not be due to ooo exec alone, but VIA C3 lacking equivalent number of
> >parallel microcode units.  Nevertheless, on microbenching, the core picked the
> >"SS Ath" for best performance albeit performing at far slower keys/sec rate.
> >
> >Maybe L2 cache size of the C3?
> 
> Maybe. However, linpack shows the L2 cache access speed to be nearly
> equal to that of main memory.
> 
> --
> JW
> 
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