Memory issue in dell 435mt

I own a dell studio xps 435mt.
I bought it with 3X1gb ddr3 @ 1066MHz RAM.

Now I have bought 3X2gb 1033MHz RAM and added to my system. So the total RAM is 9gb(3X2gb+3X1gb).

But the BIOS shows only 6gb RAM @ 1066 MHz.
When I remove 2 1gb RAMs and connect 3X2gb+1X1gb it shows as 7gb @ 1066MHz.

Is there a way for me to use all 9gb RAM
3 answers Last reply
More about memory issue dell 435mt
  1. You might want to sell your old ram and get another matched kit of 3x2 gb ram to go with your other kit.
  2. Try enabling memory remapping. It solved a similar problem with memory being ignored by the machine for a previous poster.
  3. how to enable memory remapping?
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