SK Hynix GDDR5 video memory and start delivery stacked with 8Gbit / s

Nov

18

2014

SK Hynix has begun delivery of its stacked High Bandwidth Memory cards for a new generation. In addition, the memory manufacturer has begun delivery of GDDR5 chips with a throughput of 8Gbit / s.

The HBM Memory of SK Hynix is available in 1Gb chips and delivers a bandwidth of 1 Gbit / s per signal. That’s in the ‘ data book ‘by the manufacturer for the fourth quarter of 2014. The bandwidth for the entire stack is 128GB / s. Coming GPUs can be equipped with four stacks, which the bandwidth can amount to 512GB / s. It involves issues the first High Bandwidth Memory that SK Hynix.

In the future, should a bandwidth of 2Gbit / s within reach, increasing the bandwidth per stack up to 256GB / s and GPUs with four modules so can face a range of 1TB / s. The HBM of SK Hynix operates at 1.2V. In comparison, an Nvidia GeForce GTX Titan Black with his 384bits wide bus and 7Gbit / s GDDR5 bandwidth of 336GB / s memory that operates at 1.5V.

Earlier, the details of the stacked memory SK Hynix were already known . The manufacturer puts four dram-dies on top of each other and connects these layers through vertical through-silicon via – or tsv channels through the silicon it. These data lines shorter than conventional DRAM bring benefits in terms of cost, size, power and bandwidth along with it.

SK Hynix is ​​working with AMD on the technology and the possibility exists that the memory cards from the next generation Radeon Rx 300 series will be used. Rumors about doing all over the round. Nvidia will the stacked memory for Pascal-gpu, the successor to the current Maxwell GPU, bets.

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