In a quite unexpected twist, Samsung late on Thursday said that it had completed the development of the industry's first GDDR7 memory chip. The new device will feature a data transfer rate of 32 GT/s, use pulse-amplitude modulation (PAM3) signaling, and promise a 20% power efficiency improvement over GDDR6. To achieve this, Samsung had to implement several new technologies.
Samsung's first 16Gb GDDR7 device features a data transfer rate of 32 GT/s and therefore boasts a bandwidth of 128 GB/s, up significantly from 89.6 GB/s per chip provided by GDDR6X at 22.4 GT/s. To put it into perspective, a 384-bit memory subsystem featuring 32 GT/s GDDR7 chips would provide a whopping 1.536 TB/s of bandwidth, which by far exceeds GeForce RTX 4090's 1.008 TB/s.
