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Mobile NVIDIA RTX 5090 will have 24 GB of memory thanks to 3 GB GDDR7 modules,— insider

Published by Andrii Rusanov

Recently, Samsung introduced 3 GB VRAM modules (GDDR7) for the first time. The first graphics cards featuring them might appear very soon — these will be NVIDIA RTX 5090 for laptops.

A reliable informant with a track record of leaking laptop info reported that the most powerful upcoming mobile graphics card might be the first in the industry to feature 3 GB modules. Thanks to the use of GDDR7 memory, the new Blackwell graphics cards will see a noticeable increase in bandwidth. Although the exact speed is unconfirmed, it’s expected that desktop models will have 28 Gbit/s, compared to 21 Gbit/s in most RTX 40 cards. Laptop graphics cards currently use non-X GDDR6 memory with a speed of 18 Gbit/s, which will significantly improve in the new generation.

It’s expected that the RTX 5090 graphics card for laptops, like the mobile 5080, will use the GB203 GPU. It’s not the flagship and more power-efficient chip, but it is physically limited by a 256-bit memory bus. The 3 GB GDDR7 modules allow for configurations with more memory with the same bus width. A 256-bit bus can support not just 8 GB, 16 GB, or 32 GB of memory, but also 24 GB.

The full configuration of the laptop RTX 5090 is still unknown. Likely, it will feature the full GB203 GPU with 10,752 CUDA cores and a TGP of up to 175 W. The RTX 5080 will have up to 8192 CUDA cores and 16 GB of memory from 2 GB modules. The source adds that RTX 50xx graphics cards for laptops are expected to debut in February, starting with the flagship models RTX 5090 and RTX 5080. The rest of the graphics cards will appear later, possibly in March.

Source: VideoCardz