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#XboxSeriesX memory setup explained in 3 Tweets:
GDDR6 gets its fast bandwidth by using parallelism. A single XSX or #PlayStation5 GDDR6 chip can provide 56GB/s. If a developer spreads the data across 10 chips, they can achieve 10 times the bandwidth which is 560GB/s.
Let’s think of a GDDR6 chip as a glass with a 56GB/s straw. XSX has 10 glasses, games spread each piece of data between the chips just like pouring liquid across 10 glasses. When data is needed, the game drinks data from 10 straws at the same time, reading the data at 560GB/s.
But not all glasses in the #XSX are equal in size. Data that need high speeds, like textures, will use the first 1GB of each of the 10 glasses (10*56GB/s=560GB/s) while data that doesn't need high speed, like sound, will use the last 1GB of the bigger glasses (6*56GB/s=336GB/s).
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