ddr3 4gb ram compatible with ddr3 8gb ram?

Delirior

Reputable
Jul 25, 2015
2
0
4,510
Hello,
I have my old ddr3 4gb (665mhz) , and I have 1 more slot for another stick , so Im wondering is 4gb ram compatible with 8gb ddr3 (1333mhz) or i should pick second stick of 4gb ddr3 ( 665)mhz?
 
Solution
Your old '665' DDR3 is prob it's true freq which means it's actually a data rate of 1333 since this is DDR (DOUBLE data rate) as DDR3 starts at a data rate of 800 (true freq 400). As far as mixing new with old it's a 50/50 crapshoot, there are no guarantees when mixing sticks, even if you get one identical to the old.

Tradesman1

Legenda in Aeternum
Your old '665' DDR3 is prob it's true freq which means it's actually a data rate of 1333 since this is DDR (DOUBLE data rate) as DDR3 starts at a data rate of 800 (true freq 400). As far as mixing new with old it's a 50/50 crapshoot, there are no guarantees when mixing sticks, even if you get one identical to the old.
 
Solution