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Can I use PC2700 DDR 333 on a PC2100 mainboard?

  • Memory
  • DDR
  • RAM
Last response: in Memory
February 19, 2005 6:57:29 AM


Is it possibile to use a 256M PC2700 DDR RAM on a monther board which only support PC2100 RAM? I know the performance will down. but can it run?


More about : pc2700 ddr 333 pc2100 mainboard

February 19, 2005 8:21:42 AM

your new pc2700 RAM will run, but not at it's designed clock.
Chance are big it will run @ 133MHzx2 (pc2100), but on few case it may run a little less for stability issue.

There are other posts answering that question on this board, with higher english/technical level than mine ;) 

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February 19, 2005 9:30:47 AM

All DDR RAM is backwards compatible with lower speeds so it will work in your board. However it will lower its clock speed to 133Mhz (266Mhz DDR).
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February 20, 2005 1:02:22 AM

Thank your guys so much!
February 20, 2005 8:01:36 AM

yes will work properly with lower clock speed anyway
February 20, 2005 8:01:07 PM

Yes, it should work just fine. However, the new stick will just clock itself down to the slowest memory stick's speed.

Tavis Curry