cdrkf :
Hi, first question- in what context?
If you're building a system around an AMD APU (laptop OR desktop) then correct ram settings is essential to get the most out of it.
If however you're machine has a dedicated graphics card then the specification of the memory makes very little difference in overall perforamance.
The other key question- if you're upgrading from 6gb to 8gb I'm assuming you're keeping a 4gb module already and adding a second? In that case you need to match you're new 4gb module to the old one. The machine will only be able to run them both at the speed of the slowest anyway, and ideally ram should always be matched. If you put dissimilar ram modules together in the machine it can cause all sorts of problems and may not even boot up...
Hi, thanks for the quick response.
It's a laptop with a integrated Intel HD Graphics 3000 card. And the RAM limit is 8GB.
Yeah I already have a 4GB card, it's a PC3-12800 with a CAS latency of 9. The 2GB card is a PC3-12800, also with a CAS latency of 9.
Obviously I'd like to get a card which is exactly the same as the 4GB one I already have, but I can't find one with a CL of 9 (all other specs match up though).
So the problem is that I can get 1 new 4GB card, but the CAS latencies won't match. Alternatively, i could get two new 4gb cards, both with exactly the same specs, but they'll cost twice as much.