Author: Mike S.
Date: 09:30:15 08/06/02
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On August 06, 2002 at 10:08:00, Rex wrote: >Do you receive better performance upgrading from a PC133Mhz bus speed to 333Mhz >FSB -V- keeping the PC133 FSB and upgrading CPU 300 or so Mhz? > >Better performance meaning Chess Programs. I did some Fritzmark tests with different FSB clock rates and/or* memory clock rates, with an Athlon XP. The impact of memory clock speed has been max. 6%. I've read from others, the impact of FSB speed & -settings can be up to (but not more) than 10%, for chess performance. *) I can choose mem clock asynchronous to FSB speed, i.e. FSB 133, mem 166. Also, I have noticed that DDR266 (133 MHz) with *small* latency settings provides better Fritzmarks than DDR333 (166 MHz) with *high* (longer) latency settings. 166 MHz and small latencies were not running stable, unfortunately. The CPU clock speed has *much* more impact on the chess performance. The speed increase is virtually identical to the clock rate ratio (with *very small* differences, depending on the program, position, hash size etc.). Regards, M.Scheidl
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