Samsung’s GDDR6W Doubles Efficiency and Capability

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Samsung has launched (opens in new tab) its all-new kind of GDDR6 reminiscence that doubles the DRAM bundle’s capability and will increase interface width to double its peak bandwidth. Samsung’s GDDR6W chips use conventional BGA packaging and can be utilized for mainstream purposes just like the greatest graphics playing cards.

Up to date GDDR6 and GDDR6X chips combine one DRAM gadget with a 32-bit interface. Against this, a GDDR6W chip packs two DRAM units that includes and due to this fact options two 32-bit interfaces, thus doubling capability (from 16Gb to 32Gb per chip) in addition to interface width (from 32-bits to 64 bits). To take action, Samsung’s GDDR6W chips use the corporate’s Fan-Out Wafer-Degree Packaging (FOWLP) know-how that replaces conventional printed circuit board with a redistribution layer (RDL) that’s thinner and has considerably finer wiring patterns.

(Picture credit score: Samsung)

Samsung’s GDDR6W units typically use the identical protocols as GDDR6 however provide larger efficiency and capability. For instance, a 32Gb GDDR6W reminiscence chip might ship a peak bandwidth of 176 GBps, up from 88 GBps within the case of an everyday GDDR6 SGRAM chip. In the meantime, constructing a 32Gb reminiscence chip utilizing two 16Gb reminiscence units is likely to be cheaper than constructing a 32Gb monolithic reminiscence gadget.

The reminiscence maker says that utilization of FOWLP packaging permits for the discount of the thickness of GDDR6W packaging to 0.7 mm, down from 1.1 mm within the case of ordinary GDDR6 chips, making it simpler to chill them down. Whereas widespread sense says that FOWLP packaging is costlier than conventional BGA packaging, it’s unclear how considerably the previous is extra pricey than the latter. But, it must be famous that Samsung’s GDDR6W must be cheaper than high-bandwidth reminiscence like HBM2E each when it comes to reminiscence stack manufacturing and utilization since GDDR6W doesn’t require using costly interposers.

(Picture credit score: Samsung)

To place the marketed efficiency numbers of GDDR6W into context, Samsung says {that a} 512-bit GDDR6W reminiscence subsystem (which makes use of eight chips) can present a system-level bandwidth of as much as 1.40 GBps at a 22 GTps information switch price. Against this, a 4096-bit HBM2E reminiscence subsystem presents as much as 1.60 TBps at a 3.2 GTps information switch price however at a significantly larger worth.

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