Okay, so based on CNET (and the fact that in the midst of posting this am too lazy to pull the SN of the RAM) this laptop is installed with 2 DDR3 Sticks running at 1066MHz. I do know that both these sticks are different manufacturers, but I do not know what the maximum speeds the Motherboard will support are.
Crucial's site shows 1600MHz through their proprietary system scanner, is this true? So, when looking for RAM upgrades I notice that 4GB sticks at this speed are meh about half the cost of the 8GB sets; however, being a software guy by heart my hardware, my ideals tend to be ambivalent on what I have learned/heard and what is actuality when dealing with RAM.
So, what I have been told and I feel really it reigns true almost in any situation (or maybe it's the old days of MS making software geared towards one specific hardware), for best performance and least issues use the same brand, size, and speed.
Now assuming that Acer didn't put in two different speeds, which how they set timings would be beyond me, the modules are different brands and sizes. So, I am wondering if I should go with 1066 and get a 4GB stick for the 2GB... or if my motherboard supports it get a set of 8GB at 1333/1600, etc. what if any difference would this make?