WD Touts 3D NAND That's 60% Faster, 50% Higher Capacity

Kioxia and WD Unveil World’s Fastest 3D NAND Flash Memory

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Kioxia and Western Digital have revealed their jointly developed 8th Generation BiCS 3D NAND memory device featuring 218 active layers. The new IC boasts a record-breaking 3200 MT/s interface speed that will allow developers to build high-performance storage subsystems (such as the industry’s fastest client SSDs) using fewer 3D NAND chips. To enable a 3200 MT/s I/O, the two companies took a page from YMTC’s Xtacking book. 

The first 8th Generation BiCS 3D TLC NAND device introduced this week features a 1Tb (128GB) capacity, a four-plane architecture to maximize internal parallelism and performance, and a 3200 MT/s interface speed (which will provide a peak sequential read/write speed of 400 MB/s). Kioxia and Western Digital are the first 3D NAND makers in the world to unveil a flash memory IC with a 3200 MT/s I/O, leapfrogging competitors by 33%. 



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