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memory speed not as advertised
Name: Dana J Hata Date: September 14, 2003 at 11:09:26 Pacific OS: WIN XP CPU/Ram: P4 2.53 Mhz / PC3500
Comment:
I just bought a 512MB stick of PC3500 memory which on the package states DDR 433. My FSB is running at 533mhz. But in my BIOS it says My memory is running at 333Mhz! How do I get my memory running at 433Mhz. Is it even possible with my setup?
Name: johnoh Date: September 14, 2003 at 13:06:03 Pacific
Reply:
It depends on your motherboard. It may not be able to set the dram clock higher than 166, which would result in your ddr running at 333. Check the manual.
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Response Number 2
Name: Dana J Hata Date: September 14, 2003 at 13:22:00 Pacific
Reply:
It's capable of setting it. I can overclock the FSB, and the dram clock follows along with it. Do I basically need an 800Mhz FSB CPU in order to achieve PC3500 (433Mhz) speeds?
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Response Number 3
Name: johnoh Date: September 14, 2003 at 13:54:21 Pacific
Reply:
If you are sure you cannot adjust the dram clock without increasing the cpu fsb, then you might as well see how high the cpu can be overclocked.
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Response Number 4
Name: Kevn Date: September 14, 2003 at 18:06:49 Pacific
Reply:
865 and 875p motherboards will set the ram at ddr333 when you have a 533mhz fsb cpu. Only way to get it up to 400 is to turn the fsb in the bios up to 160mhz..at the same time overclocking the cpu.
With 800mhz fsb cpu it boots up at 400 and will get to ddr433 at 216mhz fsb around.
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