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Just bought some new memory

Last response: in Memory
January 21, 2009 9:29:37 AM

So I just upgraded my memory from OCZ 4GB (2x2GB) PC2-6400 800MHz to OCZ 4GB (2x2GB) PC2-8500C5 1066MHz.

I ran the memory diagnostics test and all was fine. But in CPUz it still says my DRAM Freq is 400.0 MHz, when surely it should be 533 MHz. Am I missing anything obvious?

Any help would be appreciated. this is the first time I have changed my RAM.

More about : bought memory

January 21, 2009 11:02:58 AM

You probably need to manually set the settings in the BIOS.
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January 21, 2009 11:57:30 AM


I went into the BIOS and it said that the FSB (QDR) was 1066 and the MEM (QDR) was 800. what does this mean?

I changed the settings for the memory from auto to linked and cpuz now shows 533 MHZ
January 21, 2009 12:30:43 PM

In CPUZ go to the SPD tab which should give you something like this

This is from my Mushkin DDR2 1066. As you can see it is actually 6400 or DDR2 800 which has EPP (Enhanced Performance Profiles) settings for 1066.
This is the memory
January 21, 2009 1:01:46 PM

Right that is the same for me. Will there be any performance disadvantages? Is most PC2-8500 memory like this. I feel a little cheated as all the packaging and labels say it is PC2-8500 but it actually isn't.

Will the maximum overall overclock be reduced? Thanks for all your help.
January 21, 2009 5:28:06 PM

Almost all RAM sold as anything over DDR2 800 is actually 800. When the standard was first certified the speeds were 400, 533, 667 and 800. About a year ago JEDEC added 1066 but very little memory can reach that speed at 1.8v. Buying DDR2 1000 or 1066 or whatever is similar to buying a factory overclocked video card or something like that. The manufacturer is guaranteeing that the RAM will be able to reach a certain speed when overclocked.
January 22, 2009 8:14:14 AM

Ok i feel less cheated now.....thanks for all your help ausch30
January 22, 2009 10:47:14 AM

What FSB - DRAM Ratio are you using?