NVIDIA RTX 5090 will Use the GB202 “Blackwell” GPU: 512-bit Memory Bus and GDDR7?

According to the latest set of rumors from Chiphell, NVIDIA’s next-gen GeForce RTX lineup will be codenamed “Blackwell“. This aligns with the revelations from the Gigabyte leak and what @kopite7kimi said in a past Tweet. The new leak alleges that the consumer Blackwell family will have five GPU dies, namely GB202, GB203, GB205, GB206, and GB207. The GeForce RTX 5090 will leverage the GB202 die alongside a 512-bit memory bus and potentially 32GB of GDDR7 (or GDDR6X) memory.

Moving to the high-end segment, the GeForce RTX 5080 and 5070 Ti will likely be based on the GB203 GPU die, leaving the RTX 5070 and 5060 Ti with the GB205 core. The RTX 5060 and 5050 will accordingly be derived from GB207. If true, then this will be the first time NVIDIA will employ the Gx205 codename for a GPU die, instead of Gx206.

With Ampere, the RTX 3090 and 3080 were built on the GA102 die, with the latter featuring a 320-bit bus. The RTX 4080 cuts the memory interface down to 256-bit but backs it up with 64MB of L2 cache. The GA103 core was skipped in favor of the GA104, which is what the RTX 3070 and 3070 Ti were based on.

If this Blackwell leak is legit, we should see a repetition of the Ada naming scheme. The only difference will boil down to the AD104 being replaced by the GB205. If you were wondering, the GB10x nomenclature will be used for the Tensor Core data center GPUs. Of course, these are still flimsy rumors at this point, and we might very well end up seeing the GB10x scheme used for the consumer Blackwell GPUs.

Areej Syed

Processors, PC gaming, and the past. I have written about computer hardware for over seven years with over 5000 published articles. I started during engineering college and haven't stopped since. On the side, I play RPGs like Baldur's Gate, Dragon Age, Mass Effect, Divinity, and Fallout. Contact:
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