Stop this lazy "maybe" thing answers. ANSWER directly by saying Yes or No. With technical explainations. Thats all people need here, people same as me finding the good answers.
Stop this lazy "maybe" thing answers?
How about, stop being intentionally obtuse. "Maybe" is 100% the correct answer in EVERY SINGLE CASE when you are trying to use ANY DIMM with another DIMM that it was not tested with and validated as being compatible with at the factory. Even if they have identical part numbers. Even if they came out of the exact same factory and assembly line. Since clearly you DON'T know what you are talking about enough to be saying that "maybe" is the wrong answer, then MAYBE you should fix that shortcoming by educating yourself and here would be a good place to start.
Reading the whole guide would be best, but for this specific situation I'd recommend that you FIRST read the second section, titled "The odd man out (Or mixed memory", and then re-read the entire guide. And after that, maybe read the information at the other links I'll post as well. And in the meantime, it would be to your benefit to not be knocking the answers of people who have most likely triple the experience working on systems as the majority of our visitors have been alive, because it just doesn't make sense. You wouldn't argue with your pharmacist about his pedigree and since you know absolutely nothing about the person you are trying to throw shade at, since you've been here like three minutes in the grand scheme of things, you probably should extend at least a modicum of respect that he knows what he is talking about. And he does, I assure you 1000%.
In the beginning, there was......BIOS Before you go ANY further, go to the manufacturer product page for your specific motherboard model AND revision. Revision is an important aspect because for any given motherboard there may be more than one version of that model which will be identified...
Reading this would be a good idea as well, IF you want to gain at least a basic understanding of the very thing you seem to indicate is not understood by others.
Even Crucial, one of the biggest memory manufacturers out there and one of the few who actually manufacturers it own DRAM rather than just assembling modules using DRAM from third party fabs, says "maybe".
As well, G.Skill, one of if not THE best known aftermarket memory manufacturer in many markets, also clearly specifies that they do not recommend mixing memory and that if you mix memory, even the same brand, even THEIR memory, the result is likely to be "maybe" and that they don't recommend it.
Question: I want to install more memory, in addition to my existing memory kit. What are my options?
Answer: We do not recommend mixing memory kits, regardless of brand or model.
By mixing memory kits together, there may be compatibility issues such as unable to boot or unable to operate at rated specifications.
Each of our memory kit are thoroughly tested to ensure compatibility within each memory kit. And because we have not tested our memory kit with your existing memory kit, we cannot guarantee compatibility when multiple kits are used.
Please also note that the G.SKILL QVL applies to single kit compatibility only, so mixing two or more of the same memory kit is not recommended.
And beyond that, which applies to any configuration using TWO DIMMs, it becomes INCREASINGLY likely that you will run into some level of problem, whether it's doesn't POST at all, won't work at the XMP settings, not full capacity shows, bluescreen errors, or anything else, when you go from mixing two DIMMs to any mixed combination of four DIMMs. The more memory modules involved, and the more unmatched memory that is in the configuration, the more likely it will have problems or potentially not even work at all. I can post pages and pages of such situations just from this forum alone, just that I've dealt with, and there are thousands more examples that other members here have tackled that were directly related to mixing memory. So anybody who says it's not a problem, probably lacks any substantial experience with more than their own system.
If you MUST run memory that did not ALL come together in one kit, then you want to either run a second kit that is the exact same model/part number or is as close to the exact specifications for speed, latency and voltage as the other kit to have the best chance of it working. But even then, we often see problems that are usually due to differences in the number of ranks, rows, dram type or even configuration problems related to the instructions on the motherboard itself as sometimes every spec can look the same but there are significant differences in the secondary or tertiary timings that the board simply cannot account for.
In the end, the answer IS "maybe".