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GDDR6 FAQs

GDDR6(8)
How does graphics DRAM differ from regular DRAM?
Graphics DRAM is a category of DDR SDRAM designed to handle very large bandwidth requirements. Unlike standard DRAM, graphics DRAM is typically soldered down on the same PCB as the SoC and always supports 32 DQs per memory component. Besides graphics cards and game consoles, graphics DRAM is being used in high-bandwidth applications like networking, automotive and high-performance computing.
What features and functions does GDDR6 have compared to previous generations of graphics DRAM?

GDDR6 provides higher densities than previous-generation graphics memory. It doubles the bandwidth of GDDR5, extending past GDDR5X speeds. In addition, it is based on a dual-channel architecture, which enables a huge performance increase while still providing backward compatibility to GDDR5 memory access size.

Can GDDR6 operate in GDDR5-like mode?
No
Can GDDR6 operate in GDDR5X-like mode?
Yes
Does GDDR6 support JTAG boundary scan?
Yes, GDDR6 has IEEE 1149.1 compliant boundary scan
What is Micron’s competitive position with GDDR6?
Micron is leveraging its GDDR5X-based high-speed signaling know-how from more than two years of design, mass production, test and application learning in Micron GDDR6 products. This allows Micron to remain in the leading position on high-speed signaling with traditional memory components.
Is GDDR6 a JEDEC standard?
Yes, the GDDR6 SGRAM standard was first published in July 2017 as JESD250.
Does GDDR6 replace GDDR5 or GDDR5X?
GDDR6 is not a direct replacement for GDDR5 nor GDDR5X due to package size differences. GDDR5 has a 170-ball, 0.8mm-pitch BGA package, GDDR5X has a 190-ball, 0.65-mm pitch BGA package and GDDR6 has a 180-ball, 0.75mm-pitch BGA package.