Can RAM with a higher speed work?

Can RAM with a higher speed work? I have the memory below and I am looking at using the one below it, would it be OK to use? It appears to be a faster speed, is that OK? Also, mine says PC 4200, the new one says PC 2 5300 and the frequencies are different.
Asked by: Guest \| Views: 172

Total answers/comments: 2

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Guest [Entry]

"It will work although keep in mind the lowest common denominator will be used. In other words the new memory you put in will run at the same speed as the slower stick.

To check for compatibility Crucial's Scanner is very good."

Guest [Entry]

"Yes, it usually works, because RAM usually is downwards compatible.

For example, your MoBo and CPU can only handle a DDR-2 PC4200 (533 Mhz), but you go and buy DDR-3 PC5300 (677MHz).

The new bought DDR-3 PC5300 (677MHz) will then be run as DDR-2 PC4200 (533 Mhz). You haven't won anything performancewise. You just have reservers until your new MoBo and CPU can handle DDR-3 PC5300 (677MHz) then the new RAM will run as this.

Usually you have to adjust settings in your BIOS.
....."