iFixit, Chipworks tear down the iPad chip
Deconstructing processors like the A4 usually happens behind the closed doors of only a handful of companies. However, iFixit and Chipworks have teamed up to bring us a closer look at how semiconductor teardowns are conducted, as well as a peak inside the iPad’s A4 chip. Here’s part of what they found:
° The A4 package has three layers: two layers of RAM (Samsung K4X1G323PE), and one layer containing the actual microprocessor.
° This Package-on-Package construction gives Apple the flexibility to source the RAM from any manufacturer they want; they’re not locked into Samsung.
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