GeForce RTX 50 is expected to launch the end of this year. We are slowly approaching this date and, as expected, rumors about its possible specifications are multiplying more and more. We still don’t have any official information, but we can sift through the leaks that have surfaced and make some guesses that certainly make a lot of sense.

Today we will focus on a very important topic, the memory bus and bandwidth of the GeForce RTX 50. These new graphics cards will use the GDDR7 memory standard, which will mean a significant increase in bandwidth, although they will remain the same bus configurations that we saw in the current generation. It is not confirmed that all GeForce RTX 50 will use this type of memory, so It is possible that GeForce RTX 5070 and below will continue to use GDDR6X.

A new rumor from a trusted source claims that NVIDIA is not going to change the memory bus configurations we saw on the GeForce RTX 40, meaning that these They will range between 128 bits and 384 bits, and that we won’t finally see a top model with a 512-bit bus. It makes sense because a memory bus this big would ultimately increase manufacturing costs and affect the selling price, making this jump to GDDR7 unnecessary.

GeForce RTX 50 memory and bandwidth subsystem

I will leave you next estimate how would all GeForce RTX 50’s be configured assuming all models will use GDDR7 memory without exception.

• core GB202which will be used in the GeForce RTX 5090: it will be accompanied by a 384-bit bus and 24 GB of GDDR7 memory at 32 Gbps, which would allow us the maximum bandwidth 1536 GB/s.
• core GB203, which would be used in the GeForce RTX 5080: it will have a 256-bit bus and 16 GB of GDDR7 memory at 32 Gbps, which would allow a total bandwidth of 1024 GB/s.
• core GB204which will give life to the GeForce RTX 5070 and possible Ti and SUPER models: it would have a 192-bit bus with 12 GB of GDDR7 memory at 32 Gbps, which provides maximum bandwidth 768 GB/s.
• core GB206, This will give life to the GeForce RTX 5060 Ti, and possibly the GeForce RTX 5060 as well: it would have a 128-bit bus with 8 GB or 16 GB of GDDR7 graphics memory at 32 Gbps, leaving us with maximum bandwidth 512 GB/s.
• core GB207, which will give life to the GeForce RTX 5050 and possibly the GeForce RTX 5060: it would have a 128-bit bus with 8 GB of graphics memory at 32 Gbps and a maximum bandwidth of 512 GB/s. The 96-bit bus version would have the total bandwidth 384 GB/s.

Keep in mind that the amount of memory each graphics card will have in this new generation is still the same were not specified, and that estimate I gave you it could change. On the other hand, I remind you that it is very likely that the GeForce RTX 5070 and below will use GDDR6X to reduce costs and avoid supply problems.

AI generated cover image.

Although I still have ideas about 512 bits, the GB20x memory interface configuration is not very different from the AD10x configuration.

— kopite7kimi (@kopite7kimi) March 9, 2024