NVIDIA GeForce RTX 4080/4090 Rumors: Up to 24 GB of GDDR6X Memory, 600-Watt TDP, 4x 8-Pin Adapters

As we near the release of NVIDIA’s next generation GeForce RTX 2080/2070 graphics cards, rumors have been circulating about their upcoming counterpart. The GTX 60 series is said to be replaced by a lineup of new GPUs that will include an improved Turing GPU and some completely redesigned parts. With these new features come fresh claims: up to 24 GB of GDDR6X memory with a 600-Watt TDP rating (compared to 100 W on current 10 Gbps cards) along with 4x 8-Pin connectors for more power potential than any other card in its class.

NVIDIA’s next generation GeForce RTX 20 series, which is rumored to be the RTX 3090. The card will have up to 24 GB of GDDR6X memory and a 600-watt TDP. Along with 4x 8-pin adapters. Read more in detail here: nvidia rtx 3090.

NVIDIA GeForce RTX 4080/4090 Rumors: Up to 24 GB of GDDR6X Memory, 600-Watt TDP, 4x 8-Pin Adapters

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Were you anticipating NVIDIA’s next flagship gaming graphics card to have even more RAM than the GeForce RTX 3090’s already outstanding amount? According to Igor Wassollek, who posted a sketch of what is allegedly the standard PCB design for AD102, the GPU in charge of powering the upcoming GeForce RTX 40 Series’ upper echelon, this seems doubtful. The picture shows a dozen GDDR6X solder slots, implying compatibility for up to 24 GB of memory (Micron’s alternatives are available as 1 or 2 GB modules).

NVIDIA-GeForce-RTX-40804090-Rumors-Up-to-24-GB-ofIgor’s Lab (photo credit: Igor’s Lab)

Wassollek also mentioned that the AD102 and current-gen GA102 GPUs are pin-compatible, which supports his previous theory that the GeForce RTX 3090 Ti is a test run for the GeForce RTX 40 Series, a coincidence that would allow manufacturers to quickly and easily adapt their custom designs for the next generation of products. The inclusion of a 600-watt BIOS for testing reasons, as well as a beefed-up power supply system, suggests that the reports about Lovelace cards being used as industrial-grade space heaters are real. According to Wallossek, users will also get a 12VHPWR (12+4)to 4x 8-pin adaptor in the package.

NVIDIA GeForce RTX 4090 and RTX 4080 – memory setup, pin layout, voltage supply, and cooling (Igor’s Lab) – new information

[…] At first inspection, the GPU seems to have a staggering 24 voltage converters! Since NVIDIA (which has also been leaked in the meanwhile) will depend on an uP9512 that can only create 8 phases (but is widely accessible), each phase will most likely be powered by three voltage converters. The VRM for the memory voltage converters should be the four dark rectangles near the drill holes for the cooler. This gets us to the GDDR6X’s four stages.

In this perspective, we also notice that the GDDR6X (from Micron), which is now available in 1 and 2 GB modules, has a maximum of 12 solder slots. We may deduce that when completely filled, 12 or 24 GB (more probable) are feasible. Smaller versions could therefore (presumably) be provided with 8 or 16 GB, bringing the total number of voltage converters down to three.

Let’s return to the RTX 3090 Ti and what I referred to as a “test run.” The GA102 (Ampere) and the AD102 (Ada) chips are intended to be pin compatible, according to what I could figure out. On the other hand, by just adopting an open 600 Watt BIOS, all board partners should be able to work on the new boards and coolers without the forthcoming chip. The replacement board, as well as the cooling, may then be thoroughly checked.

According to certain reports, NVIDIA will use a triple-slot air cooler for the Reference or FE, while practically all board partners are expected to use a 3.5-slot design. As a result, there will almost probably be a number of new competitors in the weight class over 2 kilos. Compact AiO coolers and cards with a factory-installed actual water block are also being studied, although not as a major option. To reassure any possible clients with older power supply, a 12+4 (12VHPWR) to 4x 6+2 pin (PCIe old) adapter is supplied with every order.

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