GeForce RTX 5090 SE rumour raises more questions than answers after closer inspection

[Redaktion]

A dubious rumour claims Nvidia is working on a GeForce RTX 5090 SE with a cut-down GB202 die and 32 GB of GDDR7 memory on a 384-bit bus. While such a configuration is technically achievable, it would require an unusual mixed-density memory layout, making the alleged specifications difficult to slot into Nvidia's current lineu

https://www.notebookcheck.net/GeForce-RTX-5090-SE-rumour-raises-more-questions-than-answers-after-closer-inspection.1339544.0.html

[32GB impossible on 384bit]

384-bit/32-bit per GDDR7 memory chip = 12 GDDR7 memory chips.
Possible VRAM memory configs:
24 GB VRAM = 12 * 2 GB.
36 GB VRAM = 12 * 3 GB (3 GB GDDR7 memory densities are used in 5090 laptops, in some RTX PRO workstation cards and in recently announced 12 GB RTX 5070 laptops).
48 GB VRAM = 12 * 2 GB * 2 (memory chips on both sides of the PCB (aka clamshell VRAM design), like in workstation cards, like a RTX PRO 5000).
72 GB VRAM = 12 * 3 GB * 2 (clamshell VRAM design).

en.wikipedia.org/wiki/Blackwell_(microarchitecture)#Blackwell_dies

[32GB impossible on 384bit]

If it has a 500 Watt TDP, I'm not interested. I didn't like RTX 4090' 450 W already, let alone 5090' 575W (same process node = energy efficiency, just linearly scaled up from 4090).