What is GDDR5X?

The video introduces GDDR5X as a new type of VRAM used in the GeForce GTX 1080, explaining its role in holding textures, frame buffer data, and lighting information that the GPU processes to render games. It contrasts GDDR5X with GDDR5 by highlighting a key feature: it can access twice as much data at a time, yielding higher bandwidth while consuming less power than its predecessor. The narrator emphasizes that higher memory bandwidth becomes increasingly important with higher resolutions, multi-monitor setups, and demanding texture and anti-aliasing settings, which require more data to be stored in memory. He notes that GDDR5X aims to deliver around 10 gigabits per second per pin and up to roughly 450 GB/s of total bandwidth, making it competitive with, yet easier and cheaper to implement than, competing technologies like HBM. The discussion also touches on the relative advantages of HBM, such as throughput and footprint, while asserting that GDDR5X remains a practical and accessible option for mid-range GPUs and future architectures. The video concludes with guidance on evaluating VRAM choices based on desired display setups, including VR headsets like the Oculus Rift and HTC Vive, and hints at broader adoption as high-resolution displays and VR become more common. The host also plugs related gear and ends with typical channel-specific calls to action.

Topics · technology · hardware · graphics · vr · gaming · gpu · memory