NVIDIA GeForce RTX 3090 Ti Could Arrive With 21Gbps GDDR6X Memory And This Key Upgrade
Though not exactly "new," per se—at least, not in NVIDIA's case. What we're talking about is the long-rumored RTX 3000 series refresh. Just as NVIDIA did with Turing, folks are expecting Jensen and Co. to release refreshed models of the RTX 3000-series "Ampere" GPUs early next year. If you're surprised by that news, keep in mind that it's already been more than a year since the RTX 3080 hit the market.
According to a tweet by Taiwanese tech site Uniko's Hardware (reproduced above), that card will be using a specific Micron GDDR6X package with model number MT61K512M32KPA-21U. That specific model doesn't appear in Micron's part catalog yet, but we can deduce from the model number that it is not only double the density of the extant GDDR6X modules, but that it also runs at a higher 21 Gbps transfer rate.
Slapped into the configuration of the existing RTX 3090, that would give the GPU some 1,008 GB/sec of memory bandwidth—about an 8% improvement over the 936 GB/sec of the current card. In combination with rumors that the refreshed mega-GPU will have the GA102 chip's full complement of 84 streaming multiprocessors enabled (for 10,720 CUDA cores), that means we're looking at a real monster of a graphics card, with increase compute performance, memory capacity, and bandwidth.