GDDR5
Direct Answer
GDDR5 was the dominant graphics memory standard from its 2008 commercial debut through the mid-to-late 2010s, running a 32-bit bus per chip at data rates that grew from around 3.6 Gbit/s at launch to 8 Gbit/s in later products, before GDDR6 began succeeding it.
Source: JEDEC JESD212
Specs
| Commercial Introduction | 2008 (AMD Radeon HD 4870) |
| Bus Width | 32-bit per chip |
| Data Rate Range | ~3.6 - 8 Gbit/s per pin |
A Decade as the Mainstream Standard
GDDR5 memory first reached the market in 2008 with the AMD Radeon HD 4870, running a 32-bit data bus per chip at data rates starting around 3.6 Gbit/s per pin and climbing to as much as 8 Gbit/s per pin in later products around 2015. It remained the dominant mainstream GPU memory standard through most of the 2010s -- notably including the PlayStation 4's 2013 adoption -- before GDDR6 began displacing it in new graphics card designs starting around 2018, though GDDR5 continued appearing in budget and mid-range cards for some time after that transition began.