AMD's next-next-next-gen GPU, Navi 41 aka RDNA 4 teased

AMD's upcoming Navi 41 teased, Navi 4X would be a true monster -- as Navi 3X is headed into a Zen-like chipset technology design.

Anthony Garreffa

Gaming Editor

Published Aug 10, 2020 8:02 PM CDT
Updated Nov 3, 2020 11:42 AM CST

11 minutes & 30 seconds read time

We have had some incredibly juicy rumors to deal with in the last few days, and one of those is about the RDNA 4-based Navi 41 GPU from AMD.

Komachi has tweeted out some delicious tidbits on the purported the Navi 41 GPU, simply saying "there is Navi 41". We don't know anything about Navi 41, but if we connect some of those dots from what Navi 10 was, what Navi 21 will be very soon in RDNA 2 aka Big Navi aka Navi 2X -- and then after that the super-exciting RDNA 3 architecture.

AMD's next-gen RDNA 2 architecture will power the new Navi 21-powered Radeon RX 6000 series graphics cards, but after that will be RDNA 3 with the Navi 31 GPU. Komachi reports: "NV3X GCD/MCD means probably Graphics Complex Die/Memory Complex Die of Navi 3X (Navi 31)".

GPU cores war: We have seen the cores war between Intel and AMD in the CPU market, but this is what the chiplet design could provide in RDNA 3, RDNA 4, and NVIDIA's own next-gen Hopper GPU architecture. We could see more and more GPU cores, starting what will be a GPU core war with NVIDIA.
AMD can use different nodes on same interposer: This means the GPU could be 5nm or 7nm, while the memory controller can be on a larger 10nm or 14nm node. AMD can separate graphics dies from I/O dies just like it does with the chiplet design on Zen 2 processors.

We are expecting AMD to use a chiplet-based design on RDNA 3, which is what they did with their Zen CPU architecture that has been dealing some serious KOs to Intel over the last few years. A chiplet design on RDNA 3 would lead us to believe RDNA 4 and the Navi 41 GPU should feature a chiplet design.

The Very Latest Big Navi Specs

These specs are from a collection of the latest reports and rumors, and can change at any moment. I'm sure you'll know, because it'll be one of the most exciting news posts of 2020.

GPU: Navi 20 aka Big Navi
Node: 7nm+
Compute units: 80
Stream processors: 5120
TMUs / ROPs: 320 / 64
Base GPU clock: ???
Boost GPU clock: ???
Game GPU clock: ???
Compute power: ???
VRAM: 16GB GDDR6
Memory interface: 512-bit
Memory bandwidth: 896-1024GB/sec
TBP: 250-300W (or more)

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The Very Latest on Big Navi

No custom Big Navi in 2020: This is unfortunate, but AMD will most likely really nail the reference cooler this time around with Big Navi. The custom cards will be even better, faster, and cooler -- oh and they'll have various designs that differ from the reference Big Navi card.
Big Navi AKA everything else: Big Navi is also known as Navi 2X, and is powered by the RDNA 2 architecture. So if you've heard about "Big Navi" then that is "Navi 2X" which is powered by the RDNA 2 architecture. They're all one and the same thing.
No HBM2 or HBM2e memory, it's GDDR6: This is the latest news... AMD is not using HBM2 or HBM2e memory and rather GDDR6 which has been a gigantic leap for current RDNA and Turing-based graphics cards on the market right now. HBM2 and HBM2e are also very expensive.
Big Navi launches in November: I've written about that here, but Big Navi is launching in November 2020. We might not see every single RDNA 2 card launched in November, but we should see at least a couple launch.
Alongside PlayStation 5 and Xbox Series X: November 2020 is going to be the hottest month of 2020 for gamers, tech enthusiasts and performance enthusiasts -- we have the launch of Microsoft's next-gen Xbox Series X, the launch of Sony's next-gen PlayStation 5, and AMD's next-gen Big Navi graphics cards.

AMD's next-next-next-gen GPU, Navi 41 aka RDNA 4 teased 13

Previous Big Navi / RDNA 2 highlights:

Big Navi GPU samples are in for driver validation: This is something new, with reports suggesting that the "first validation sample was sent recently to Shanghai for driver development". This means that new rumors on Big Navi performance could be much more true than before, because AMD will now have a performance target for final revision cards.
RDNA 2 = 40-50% faster than GeForce RTX 2080 Ti: We have rumored performance improvements inside of RDNA 2 that would make it 40-50% faster than the GeForce RTX 2080 Ti. This is impressive, as the flagship Radeon RX 5700 XT is nowhere near the RTX 2080 Ti in raw performance. You can read more on that here.
RDNA 2 = 195-225% faster than RDNA aka RX 5700 XT: RDNA 2 being a huge 195-225% faster than RDNA means that it will be a truly kick ass 4K gaming card, as well as being able to pump away at 1080p and 1440p resolutions at 120/144/165FPS much easier than the Radeon RX 5700 XT.
7% IPC improvement: AMD is bound to have at least 6-7% IPC improvement in RDNA 2 over RDNA, I would say 10% and above, but lowering estimates now will only improve what we think when AMD unleashes in November 2020.
NVIDIA Killer? Maybe: If the rumors are true, then like what Jason Momoa said when he was asked if he thought the Snyder Cut of Justice League (now known and confirmed as Zack Snyder's Justice League releasing in 2021 as a HBO Max exclusive) then I have the following answer to the question is Big Navi an NVIDIA Killer: f*ck yeah.
November 2020 launch: This is the key. November gives AMD a couple of months to see how Ampere does, and launch it when the next-gen consoles are launching in the PlayStation 5 and Xbox Series X. More on the November 2020 launch of RDNA 2 here.

AMD's next-next-next-gen GPU, Navi 41 aka RDNA 4 teased 503

Big Navi / RDNA 2 launching in November key points

November 2020 launch: Firstly, AMD aiming for November means it puts the next-gen Radeon a couple of months behind NVIDIA is the rumors (and my sources) are true about an "August 2020 launch, September 2020 release" for the next-gen Ampere-based GeForce RTX 3000 series graphics cards.
How AMD benefits from a November launch: It will allow the company to have a couple of months to see where NVIDIA has priced its next-gen cards, and to gauge how performance is once it hits the hands of customers. AMD would then have a couple of months to be ready for a possible KO blow (at least for 2020) with Big Navi.
Thanksgiving launch: This is big for obvious reasons, but AMD being able to be inside of the next-gen Xbox Series X, the next-gen PlayStation 5, and have an NVIDIA Killer with Big Navi -- all for thanksgiving? What better gift can AMD bring to the table for Thanksgiving than that?!
Launching alongside PlayStation 5 and Xbox Series X: The stars have truly aligned for AMD to make this happen, and if performance of Big Navi is truly double that of RDNA1 and a 40-50% boost over the GeForce RTX 2080 Ti? Well, we could see AMD take out the end of 2020 with Intel and NVIDIA destroying products. Amazing.
Lisa Su did say Big Navi was coming in 'late 2020': You can read more about that here, but November is pretty damn spot on with "late 2020", right?!

AMD's next-next-next-gen GPU, Navi 41 aka RDNA 4 teased 12

(Older) Quick RDNA 2 / Big Navi specs

GPU cores: 72 SMs (two clusters of 36 CUs)
GPU game clock: 2.05GHz
GPU boost clock: 2.15GHz
Power usage: 300W or so
Performance: 40-50% faster than RTX 2080 Ti, 100% faster than RX 5700 XT

AMD's next-next-next-gen GPU, Navi 41 aka RDNA 4 teased 502

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