How does DDR4 RAM's data transfer logic work? For example, in a system with memory channels, does using a single channel provide better performance, or what are the advantages of dual-channel? Can you explain this in depth?
How does DDR4 RAM transfer data, and why are memory channels important?
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I remember being shocked when I learned that RAM used to run on a single channel. Now I hear that with DDR4 you can transfer data simultaneously on dual channels. So does this extra bandwidth actually make a performance difference, or is it just marketing?