There's a prevailing misconception you cannot use different RAM sizes together or that you cannot mix RAM brands. The answer is Yes, you can mix RAM sticks and RAM sizes and even different RAM speeds—but mixing and matching RAM modules isn't the best for system performance.
You can use memory modules of different speeds as long as they are faster than those specified for your computer. It is recommended to use modules of the same speed as those already installed in your system. You cannot mix DDR, DDR2, DDR3 in a system as each technology requires a different type of socket.
You can use 8GB RAM and 4GB RAM together, but doing so can affect performance. Although you'll have a total of 12GB RAM, it will be slower than using two memory sticks of the same size. When using 8GB and 4GB RAM together, they should have the same voltage rating.
Yes you can, but I wouldn't recommend it, as the 16GB will be used as 8GB to run dual-channel with the 8GB you likely already have, and the other half will be used as single-channel. It's also better to have the same type of ram, as to not affect performance via the voltage, controllers and whatnot.
Can You Mix Different RAM Brands? In short, the answer to this question is: yes. The only RAM characteristic that will certainly cause incompatibility between RAM modules is the memory type. Different generation RAM sticks – like DDR3 vs DDR4 – will not work together.
Yes. 2666MHz and 2400MHz are DDR4 and backwards compatible. All of the installed memory will work at 2400MHz. Be careful to select a memory which is compatible with your motherboard as not all 2666MHz modules will work.
Yes. 2666MHz and 2400MHz are DDR4 and backwards compatible. All of the installed memory will work at 2400MHz.
I use Adata in quite a few builds and think they are usually pretty good. If they suit your budget better, they will be absolutely fine, for example the XPG Z1 (usually at 4200 speeds which is not needed) the Adata perform better than the Vengeance LPX at a cheaper price.
Properly stored, unopened flavored water will generally stay at best quality for about 9-12 months when stored at room temperature, although it will usually remain safe to drink after that. If flavored water develops an off odor, flavor or appearance, it should be discarded.
Very hard cheeses, such as Parmigiano-Reggiano or aged dry Jack, will be dry and won't melt well, though they can be incorporated into melty cheese dishes as a secondary cheese for a punch of flavor. High-fat cheeses include Swiss, cheddar, Gouda, Edam, blue cheeses and Colby or Monterey Jack.
This complete melting occurs at about 130°F for soft, high-moisture cheeses like mozzarella, around 150°F for aged, low-moisture cheeses like Cheddar and Swiss, and 180°F for hard, dry grating cheeses like Parmigiano-Reggiano.