Graphics DRAM is a category of DDR SDRAM chips made to specifically handle the enormous demands of graphics processing. Unlike standard DRAM, graphics DRAM is a fixed and dedicated memory, generally combined with the graphics processing unit (GPU) – either on the graphics card or on the system board (for systems with onboard graphics). Graphics DRAM also helps shift the display and graphics-related load away from the computer’s main memory, as well as improve the performance of the GPU and the system’s display.
Yes, GDDR5X has two operation modes:
- QDR mode, supporting speeds of 10 Gb/s and above
- DDR mode, compatible with GDDR5 and supporting 0.2–6 Gb/s
Yes, GDDR5X added a connectivity test mode that allows electrical verification of balls after connection to a memory interface.
Micron is the first memory supplier in the industry ramping GDDR5X product. This puts Micron in the leading position on high-speed signaling with traditional memory components.
Yes, the GDDR5X standard was published in Dec 2015 as JESD232.
GDDR5X is not a direct replacement for GDDR5 due to package size differences:
- GDDR5X: BGA-190
- GDDR5: BGA-170