Generally, 4x8GB RAM will offer slightly more performance out of the gate, but can limit your potential performance down the road. For the more ambitious PC user demands peak performance, 2X16GB RAM model is a better choice, as it has the ability to upgrade from the initial pool of memory. When purchasing any new computer, you’re always
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Consider a system with 4 GB and 8 GB memory modules running on a dual-channel setup. Here, the 4 GB module and the 4 out of 8 GB RAM (in total 8GB) will run on dual channel mode. The remaining 4 GB runs on a single channel. This means the system’s performance will run as a dual-channel setup until it reaches 8GB.
The short answer is yes, you can pair 8GB and 16GB RAM in a laptop. However, there are a few things to keep in mind when doing so. First, your laptop’s motherboard will need to support dual-channel memory in order for this configuration to work properly. Second, it’s generally best to use matching pairs of RAM sticks for optimal performance
The CPU may be able to support up to 16GB but if the motherboard can only take 8GB then that's your limit. In Ubuntu if you're running 32-bit then your limit is 4GB and if you're running 64-bit it's much higher (can't remember for certain but it's way way above 16GB. But you will always be restricted by your hardware.This configuration is basically identical to the $800 model Apple has listed, short of a $200 upcharge for 16GB of Unified Memory. 8GB will get you by for standard web browsing, but 16GB can help
Activities like gaming, image editing, and video editing take a lot more RAM than activities like browsing the internet and streaming video, so how you plan to use your computer will play a significant factor in how much RAM you need. Many users can get by just fine with 8 GB of RAM, but you might need 16 GB, 32 GB, or even more, depending onlg5fo.