I have an Inspiron 17R (7720) bought in 2012 with 6GB memory (4+2) DDR3 800 MHz PC3-12800 and I would like to know if I can upgrade my memory with PC3-12800 DDR3-1600MHz 204pin SO-DIMM DDR3 as Y see the RAM frequencies are now much higher.
Thanks for your help !
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It won't make any difference in speed - the faster RAM will simply downclock to its current speed. The speed is limited by the mainboard and processor -- not the memory itself.
Even DDR3-1600 isn't very future-proof -- by the end of the year, a new Intel mobile platform (Skylake) will be out and it'll require DDR4 memory, so the heyday of DDR3 will soon pass.
RE: upgrade memory on Inspiron 7720
Thanks for the answer !
I understand that this model was successfully upgraded to 16 GB by some people even if Dell officially states maximum RAM size as 8 GB
If I want to upgrade to 8 GB, shall I just change the 2 GB memeory to 4 or is it required that I change both to avoid problems ?