Aspire E5-774G RAM question

Yes, it's perfectly possible, you can go up to 32 GB max. probably, it'd depend on your processor.

It could be tricky to match the 8 GB stick you have already installed, or it could be trivial. Sometimes it's hard to know which memory is compatible with which even if they share the same primary timings (or at least the CAS latency, that CL you see advertised), which may make the computer not even boot up.

Unless one gets a matched set, those that are sold as a pack of 2, it's trial and error. I make it sound dreary but most of the time there's no problem getting a stick that's similar to the one that's already present.

Run HWiNFO and post here the details of what you have installed and I'll try to give you more info (right click, open in a new tab to see it better):



As for the RAM clock speed, it depends on the processor you have as well as the RAM type. In your case 2133 MHz means it's DDR4 and that's likely the max. frequency your processor supports. You can get memory that goes faster because it has profiles to run at lower frequencies, you won't be getting past 2133 MHz (it can still be useful if you find a cheaper 2400 MHz module for example that's compatible with the one you have).

For example, mine is DDR4 2666 MHz, but in that screenshot you can see it has profiles for running at 2400, 2133 and 1866 MHz (the D from DDR stands for double).

orvieto11 said:

Please take a look at the following the Crucial scanned result page.

https://www.crucial.com/scanview/73C3664431D926C3

Yeah, I noticed that too, finding 2133 MHz memory seems to be getting increasingly difficult in SODIMM format (laptop memory, and NUCs too I believe). On the other hand, I have yet to find a higher frequency memory kit that doesn't ship with 2133 MHz profiles to work at that speed.

The main problem would be getting them both to work together without problems, even with memories that are the same there are sometimes problems. Which is why people go for pairs that are sold in kits. Have you considered buying another stick like the one you have right now? Being second hand doesn't imply it's used, for example when I got my machine first thing I did was upgrading the 8 GB I had installed for a stick of 16 GB, I sold the other module not as new, because it wasn't in its case and all, but as almost new.

As for compatibility that's the second best option, the best being getting a kit that has 2x 8 GB modules (even if it's 2400 MHz like the one you have, it will work at 2133 just fine).

And the third best is getting another stick that matches the timings of the one you have (CL15 at 2133 MHz, 15-15-15-35), but because it's hard to find you may need to seek the specificacions for each module and try to find the timings at 2133 MHz. Maybe even send an email to manufacturers on which one they would have at those frequencies explaining the case a bit.

The problem with mismatched kits is that they may not work in tandem, or the system may refuse to even load. It's a tricky situation, many people will advise to only get matched pairs, but I've had success with mixed RAM. I tried looking for an off-the-shelf Kingston module that matches the one made for Acer you have installed, I think this one could be it: KVR24S17S8/8 but without actually putting it there it's impossible.

You could try buying from a place that allows you to return it if it doesn't work properly like Amazon, and see how it goes. Personally, I'd look at the first option first, then getting that Kingston part (KVR24S17S8/8), then the second (although it's ideal, but it'd mean having to sell the module you have), lastly the third.

When you get two sticks that work in dual mode the processor is able to access both modules simultaneously and getting you more bandwidth is awesome for database programs. DB servers have as many memory as they can do for caching as well, and they certainly work in quad channel (accessing 4 sticks at the same time).