DragonFly BSD
DragonFly kernel List (threaded) for 2003-11
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Re: AMD64 impressions (Re: AMD64 box)

From: James Bilotto <jb13@xxxxxxxxxxxx>
Date: Wed, 12 Nov 2003 16:05:19 -0800

On Wed, Nov 12, 2003 at 02:12:43PM -0800, Matthew Dillon wrote:
> :If you think an Athlon64 is fast, you should get a Tyan Tiger K8S or
> :Asus SK8N and an Athlon FX51.  The dual-channel memory controller of
> :the Opteron/FX51 vs. Athlon64 gives a very noticable speedup.
> :
>     I saw that chip but decided that the money was better spent on the
>     lower end chip for the UP work because I eventually plan on getting
>     another box (i.e. an SMP box).
>     I'm impressed either way, though.  The Athlon64 will interleave the
>     banks and when I write a little program to scan, say, a 32MB chunk of
>     memory over and over again I get on the order of 2.62GBytes/sec from
>     main memory with PC3200 memory. 

so that's what, 75% of the memory bandwidth. 

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