Overview
GDDR6 is the standard memory for modern graphics cards. It is optimized for the massive bandwidth requirements of 3D rendering and AI workloads, prioritizing throughput over the low latency required by system RAM (DDR).
Key Features
- High Speed: Data rates typically ranging from 14 Gbps to 20 Gbps per pin.
- Dual-Channel Architecture: Each chip has two independent 16-bit channels for improved efficiency.
- PAM4 Signaling (GDDR6X): An enhanced version used by NVIDIA that uses four signal levels to double the data per clock cycle.
Comparison
While DDR5 is designed for general-purpose CPU tasks, GDDR6 is built to feed the thousands of parallel cores in a GPU.