Equation 10 · Part 1 · An Optical Fabric Turns Off-Package Memory Into an Extension of the Die
Symbol beta_cu
What this part means
betu 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
betu 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 beta_cu→Article meaning
The passage around this formula
…700 watts the HBM3e subsystem itself actually draws. Using the whole-package figure as therefore overstates the copper baseline’s energy cost relative to memory bandwidth alone, which means it understates and, mechanically, would inflate any L computed against it. Even the “easy” side of this ratio is a biased proxy, not a clean measurement — and the bias runs in the direction that would make the optical case look better than it may actually be, which is exactly the wrong direction…
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