Wow. They did it again.
The NVIDIA GeForce RTX 4090, a GPU already known for its monstrous power, is now being pushed even further—this time with a jaw-dropping 96GB of GDDR6X memory. Originally launched with 24GB, modders have taken it to 48GB, and now reports suggest an even more extreme version could be on the horizon. While not officially mass-produced yet, these modified cards are being tested as a potential alternative for AI workloads, offering massive VRAM without the price tag of NVIDIA’s high-end workstation GPUs.
The news comes from a post on X by @eisneim, who claims to have received confirmation that a 96GB variant of the RTX 4090 is in testing. While some skeptics doubt its feasibility, citing the lack of 4GB GDDR6X memory modules, others insist that a manufacturer has them available. If true, this would allow a custom PCB with 12 memory channels to support 96GB of VRAM, leveraging the card’s 384-bit memory bus.
Chinese factories have already demonstrated their ability to mod NVIDIA’s GPUs, turning the RTX 4090D into a 48GB powerhouse and boosting the RTX 4080 to 32GB. Now, the idea of an RTX 4090 reaching 96GB seems less far-fetched. This could be a massive win for AI researchers and engineers who need large amounts of VRAM but don’t want to pay for enterprise-grade cards like the H100 or H200.
However, stability remains a major concern. The RTX 4090 wasn’t designed for such a dramatic VRAM increase, and the long-term reliability of these modifications is unknown. There’s also the question of cost—while a 96GB RTX 4090 would likely be cheaper than workstation-class GPUs, it could still end up costing double the price of a 48GB modded card.
Still, seeing an RTX 4090 with 96GB of VRAM would be a game-changer for AI workloads, assuming it holds up under pressure. For now, it remains an experimental upgrade, but if testing proves successful, this could open the door to a new category of high-VRAM consumer GPUs.
More details here: NVIDIA GeForce RTX 4090 with upgraded 96GB VRAM teased.