Noise is an electrical disturbance or interference (static) that destroys the integrity of the signals on a wire. Noise can come from a variety of sources, including radio waves, nearby electrical wires, lightning, cell phones, and bad connections.
2GB modules have twice the number of physical pin connections as 1GB modules do. For chips that are stacked, additional noise is introduced because of the extra physical pin connections.
For games, 1GB is optimal because most games do not require more than 1GB of memory. Since your computer has to map the entire 2GB memory space, any unused memory is equivalent to a loss in memory performance.
Unless you are constantly using more than 1GB of memory, you don't need more.
You will benefit from 2GB if:
1. You are rendering graphics, video or audio.
2. Playing a graphically intense new gaming title on the highest possible setting. Or a game where you deploy several thousand units on a single scenario.
3. The processing of high bandwidth data (server applications)
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"Memory with lifetime warranty? So, whose lifetime is that?"
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