AMD Navi 31 enthusiast MCM GPU based on RDNA3 architecture has reportedly been taped out

Published: 29th Oct 2021, 07:09 GMT   Comments

AMD Navi 31 taped out

Greymon55, probably the most talkative leaker on RDNA3 content, has now reported that Navi 31 GPU has been taped out.

According to the tweet, the `next-generation flagship card has been taped out. The tape-out process is an important step in bringing the GPU to the market, but there are still a few steps before the GPU can be brought to the market.

Tape out means that the design has been finished, but the processor can still change as bugs are discovered and fixed through various engineering iterations of the chip. Once the first wafers are produced, AMD will begin testing the chip which will require a lot of time, especially considering that Navi 31 is AMD’s first consumer Multi-Chip-Module (MCM) design featuring as many as two compute dies.

It is not quite clear if both dies are identical and are manufactured on the same wafer, but their configuration is more or less the same. Each features 3 Shader Engines carrying 120 Compute Engines. This means that the full chip is to feature 15360 FP32 shading units, but the Radeon cards based on this silicon may be cut-down to preserve good yields and supply.

AMD Navi 31 GPU Diagram, Source: Olrak

As far as rumors are to be believed, the chip is to be manufactured using TSMC N5 and N6 process technology. Unfortunately, AMD made no comments nor they have released a new roadmap that would ultimately confirm the choice of the foundry and their technology.

AMD Navi 31 is to be used by Radeon RX 7900 series, the next-gen flagship series that will replace Navi 21 based RX 6900/6800 series. These cards are to be expected no sooner than late 2022.

Radeon 5000
Radeon 6000
Radeon 7000
Radeon 8000
Node7nm7nm5nm / 6nm3nm / 5nm
Navi 21
5120 SPs
Navi 31
15360 SPs
Navi 41
? SPs
Navi 10
2304 SPs
Navi 22
2560 SPs
Navi 32
10240 SPs
Navi 42
? SPs
Navi 14
1536 SPs
Navi 23
2048 SPs
Navi 33
4096 SPs
Navi 43
? SPs
Navi 24
1024 SPs
Navi 22 6nm
2560 SPs
Navi 44
? SPs
Navi 23 6nm
2048 SPs
Based on speculation

Source: @greymon55

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