AMD Radeon RX 7900 “Navi 31” RDNA 3 graphics cards reportedly have 20Gbps memory

AMD could equip sooner GDDR6 reminiscence chips on its upcoming high-end Radeon RX 7900 collection graphics playing cards primarily based on Navi 31 “RDNA 3” GPUs.

AMD’s Excessive-Finish Radeon RX 7900 RDNA 3 “Navi 31” Graphics Playing cards Reportedly Have 20Gbps Reminiscence

The newest rumor comes from Greymon55 and states that the quickest Crimson Workforce RDNA 3 GPUs primarily based on the Navi 31 SKU will use sooner GDDR6 reminiscence arrays. AMD’s RDNA 2-powered Navi GPUs include reminiscence speeds of as much as 18 Gbps. 18 Gbps reminiscence was added within the latest RDNA 2 refresh whereas the preliminary lineup used 16 Gbps dies.

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It’s mentioned that the Radeon RX 7900 collection, which is able to cowl the high-end phase with its highly effective MCM-based Navi 31 GPU design, will supply reminiscence speeds of as much as 20 Gbps. That is an 11% improve over the quickest reminiscence resolution accessible for AMD Radeon RX 6000 playing cards.

Contemplating the AMD Radeon RX 7900 collection flagship comes with a 384-bit bus interface, we are going to get a 960 GB/s bandwidth resolution and there may be additionally the Infinity Cache bandwidth which needs to be elevated to 384 MB (192 MB customary + 192 MB 3D V-Cache in six MCDs). Current hypothesis has proven that with the brand new MCD Infinity cache construction, the Radeon RX 7900 collection can ship as much as 7 TB/s theoretical bandwidth, which might be a large improve over the 1 TB bandwidth. .79 TB/s at present accessible on RX 6950 XT graphics. map.

However that is not all, the leaker additionally says that an RDNA 3 refresh might characteristic the high-end 24 Gbps reminiscence arrays. This is able to yield the identical GDDR6 bandwidth as NVIDIA’s flagship GeForce RTX 3090 Ti graphics card. Even the RTX 4090 Ti is predicted to make use of 24Gbps reminiscence dies, however we’ll see if that plan adjustments sooner or later. As for the anticipated refresh date, it is anticipated in late 2023 or early 2024, so we have now over a yr and the launch of the preliminary AMD RDNA 3 household to attend earlier than we speak about a refreshment. The reminiscence could be outfitted with all of the refreshed fashions.

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AMD RDNA 3 Navi 3X GPU Configurations (Preliminary)

GPU identify Navi 21 Navi 33 Navi 32 Navi 31 Navi 3X
GPU course of 7nm 6nm 5nm/6nm 5nm/6nm 5nm/6nm
GPU package deal Monolithic Monolithic MCM (1 GCD + 4 MCD) MCM (1 GCD + 6 MCD) MCM (to be decided)
GPU die dimension 520mm2 ~400mm2 440mm2 630mm2 To be decided
Shader engines 4 2 4 6 8
WGP-GPU 40 20-16 40-32 60-48 64
SP by WGP 128 256 256 256 256
Calculation items (per matrix) 80 40-32 160 -128 (Complete) 240-192 (Complete) 128 (per GPU)
256 (Complete)
Cores (per matrix) 5120 5120-4096 10240-8192 15360-12288 8192
Hearts (Complete) 5120 5120-4096 10240-8192 15360-12288 16,384
Reminiscence bus 256 bit 128 bit 256 bit 384 bit 384 bit x2?
Reminiscence Kind GDDR6 GDDR6 GDDR6 GDDR6 GDDR6
Reminiscence capability As much as 16 GB As much as 8 GB As much as 16 GB As much as 24 GB As much as 32 GB
Reminiscence pace 16-18 Gbps To be decided To be decided 20 Gbps To be decided
Reminiscence bandwidth 512-576 GB/s To be decided To be decided 960 GB/s To be decided
Infinite Cache 128 MB 128 MB 256 MB 384 MB To be decided
Flagship SKU Radeon RX 6900 XTX Radeon RX 7600XT? Radeon RX 7800XT?
Radeon RX 7700XT?
Radeon RX 7900XT? Radeon Professional
PAD 330W ~200W ~300W ~400W To be decided
Launch This fall 2020 This fall 2022? This fall 2022? This fall 2022? 2023?

Information Supply: Videocardz

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