DDR2 questions

June 1, 2009 at 09:28:37
Specs: Windows Vista
Hello. I have bought a DDR2-800 recently to replace the broken one (1gb DDR2-667). As a result, two ram slots are plugged in with 1gb DDR2-667 and 2gb DDR2-800.

1. Is there any problem if i mix these two with different frequency?

2. my computer runs well with these rams but the problem is it shows only 2gb ram when i checked in the properties of computer icon. suppose it should be 3gb rams...i did check using cpuz and it showed 3gb...how come? Any solution to make my computer use both rams(total=3gb)?

3. 2 slots with 2x 1gb DDR2 ram better? OR
plug only one 2gb DDR2 ram better?

p/s : i do know that my ram with frequency of 800 will be decreased to 667...

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June 1, 2009 at 09:52:37
How do you know one of your DDR2-667 sticks was "broken"?

This new combination has knocked the memory out of dual channel mode. So to answer your question, 2 x 1GB in dual channel mode is better than 2GB in single channel mode. However, 3GB in single channel mode would probably be even better. You *should* be able to run both the 1GB & 2GB together but you may have to experiment with the way you have them configured in the slots.

It would help to know your system specs. At least the motherboard make/model or if it's an OEM system (Dell, Gateway, HP/Compaq, etc), the make/model of the PC itself.

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June 2, 2009 at 04:04:56
oh...my computer runs well now^^
i changed my 2gb ram with 2x1gb ram...
As a result, in order to make ur computer detect both rams...u need to install two identical rams (with same memory and same frequency).

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