The AMD Big Navi may have more video memory than the powerful GeForce RTX 3080. It is also expected to have a smaller sibling with more VRAM than Nvidia's very popular graphics card. [The Navi 21 (aka Big Navi) will have 16GB of VRAM, while its smaller sibling, the Navi 22, has posted 12GB of VRAM. Both of these cards make up the new Radeon RX 6000 series of graphics cards.

Comparatively, the RTX 3080 has 10GB of VRAM, which is super-fast GDDR6X and uses a 320-bit memory interface; the Big Navi may use more memory, but Wccftech reports that the Navi 22 uses a 192 bit bus interface, whereas it is rumored to be GDDR6 with a 256-bit memory bus.

Therefore, more memory does not necessarily mean better performance. Other leaked information also states that Big Navi, the likely flagship of the Radeon RX 6000 series, will be a GPU that will chase the RTX 3080, but will not be able to beat it.

However, there is room for AMD to use a larger memory interface bus, and combined with a larger pool of video memory, it could achieve higher memory throughput and thus more performance. However, this is all based on rumor and speculation.

We do know that the Radeon RX 6000 series will use AMD's new RDNA 2 GPU architecture, which is also used in the PS5 and Xbox Series X.

So far, the Radeon RX 6000 series has beaten Nvidia's GeForce RTX 2000 series and could challenge the new Ampere-based RTX 3000 series graphics cards with mid- to high-end graphics cards at and appear to offer them at less expensive prices.

The only one that seems to stand alone is the GeForce RTX 3090 at $1,499. This is a truly monstrous graphics card with 24GB of GDDR6X VRAM and capable of delivering games up to 8K.

Big Navi and the rest of the Radeon RX 6000 series will be revealed on October 28. So it won't be long before we see AMD's response to Nvidia's new GeForce lineup.