Published in Graphics

AMD might move to monster RDNA 3 GPU With Dual graphics dies

by on21 June 2022


Eight Shader Engines, 16,384 stream processors, two turtle doves 

The dark Satanic rumour mill has manufactured a hell-on-earth yarn claiming that AMD was working on an RDNA 3 GPU with eight Shader Engines making 16,384 stream processors.

Greymon55 was unsure if this RDNA 3 GPU was something that would eventually make its way to the market. But has a follow-up post suggesting that the chip may actually end up launching in 2023.

The new RDNA 3 GPU is different than the rest of the 'Navi 3X' lineup. The flagship Navi 31 GPU was previously thought to have an MCM design with dual graphics core dies or GCDs. Now it seems that the plans changed and the chip with feature a single GCD with multiple MCDs.

But this might have opened up the room for an even higher-end chip in the Navi 3X family, one that may end up reutilising the dual GCD design. This chip is said to be more powerful than the Navi 31 chip.

The GPU is expected to offer 16,384 cores however the leaker now says that the final specifications are 'To Be Determined'. Reaching 16,384 cores with dual 'cut-down' Navi 31 dies is not a big feat which can be managed by dual Navi 32 GCDs.

What it looks like is that these will be a new chip which is probably why Greymon55 isn't simply calling it dual Navi 31 or Navi 32 which would have arrived with two individual GPUs instead of a single GPU with two GCDs.

It is unclear what this new RDNA 3 GPU ends up powering? Content creation seems a good bet but it could end up in a Radeon RX 7000 series rig.

 also believes that the dual GCD RDNA 3 GPUs will end up in Pro cards rather than gaming cards.

AMD RDNA 3 Navi 3X GPU Configurations (Preliminary)

GPU Name

Navi 21

Navi 33

Navi 32

Navi 31

GPU Process

7nm

6nm

5nm/6nm

5nm/6nm

GPU Package

Monolithic

Monolithic

MCM

MCM

Shader Engines

4

2

4

6

GPU WGPs

40

20-16

40-32

60-48

SPs Per WGP

128

256

256

256

Compute Units (Per Die)

80

40-32

160 -128 (Total)

240-192 (Total)

Cores (Per Die)

5120

5120-4096

5120-4096

7689-6144

Cores (Total)

5120

5120

10240-8192

15360-12288

Memory Bus

256-bit

128-bit

256-bit

384-bit

Memory Type

GDDR6

GDDR6

GDDR6

GDDR6

Memory Capacity

Up To 16 GB

Up To 8 GB

Up To 16 GB

Up To 24 GB

Infinity Cache

128 MB

128-256 MB

384 MB

512 MB

Flagship SKU

Radeon RX 6900 XTX

Radeon RX 7700 XT?

Radeon RX 7800 XT?

Radeon RX 7900 XT?

TBP

330W

~200W

~300W

~400W

Launch

Q4 2020

Q4 2022?

Q4 2022?

Q4 2022?

 

Last modified on 21 June 2022
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