Equation 11 · Part 1 · Comparing the Main Approaches to AI Memory Systems and the Bandwidth Wall
Symbol W
What this part means
W is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Its job in the formula
W is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol W→Article meaning
The passage around this formula
…for a much longer link latency — on the order of 40 nanoseconds for a PCIe 4.0 hop versus under 1 nanosecond for a native DDR4 link [ 6 ] . That is the pin-versus-latency trade the earlier equation predicts: CXL keeps W narrow and serial, and pays in access time instead.
Learn the underlying idea
A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.
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Sources cited in the surrounding passage
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