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How Micron GDDR6X memory is the secret to unlocking 4K on Nvidia’s RTX 30 series cards



Even with regular iterations of consoles, PC hardware has found ways to stay ahead. This is usually due to innovations that are changing the way graphics graphics work, and this is happening right now with the next wave of GeForce RTX graphics processors from Nvidia. The RTX 3070, 3080 and 3090 use the new Micron GDDR6X memory. This is a step above traditional GDDR6 VRAM, and it could be a leap of generations in system bandwidth performance thanks to PAM4 Micron technology.

Pulse amplitude modulation (PAM4) is the name for transmitting 2 bits of data over a connection instead of 1 bit. This is a technical concept, but in essence, it allows the system to call from 4 potential states instead of 2 with each burst of information. Thanks to PAM4, Micron and Nvidia promise a significant increase in data rate and bandwidth. GDDR6X is also more energy efficient. At 21

Gbps, GDDR6X uses 15% less power per bit than GDDR6 at 14 Gbps.

Micron claims that the GDDR6X data rate of 21 Gbps, when you combine all these pins and memory modules into something like the RTX 3090, the total GPU bandwidth is 936 GB / s. It’s massive. For comparison, the memory capacity of the Xbox Series X reaches 560 GB / s, and the PS5 – 448 GB / s.

Simply put, this means that the GPU can instantly extract huge amounts of data from its memory. And this will lead to better games.

“[Gamers] will benefit from increased data rates in the system, ”said Micron graphics boss Ralph Ebert in a media presentation. “This increases the data that is transferred between the GPU and the memory interface. We believe we will enable 8K resolution and get closer to real-time tracking. “

This actually means that GPUs will finally have enough bandwidth to comfortably handle 4K. In a world where even the $ 1200 RTX 2080 Ti tries to reach 60 frames per second at 4K, GDDR6X is crucial to overcoming this barrier.


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