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Details of AMD's Navi 14 and Navi 12 chips leak - Big Navi and Small Navi

A challenge to Nvidia in the low-end and High-end with RDNA

Details of AMD's Navi 14 and Navi 12 chips leak - Big Navi and Small Navi

Details of AMD's Navi 14 and Navi 12 chips leak - Big Navi and Small Navi

Rumour has it that AMD plans to release high-end and low-end Radeon Navi graphics cards before the end of 2019, challenging Nvidia's high-end RTX offerings as well as the company's low-end GTX-16XX series.

With this move, AMD will bring RDNA to an incredibly wide audience, fully replacing the company's ageing Polaris lineup with stronger, more power-efficient product offerings.     

Now, specifications for AMD's rumoured Navi 12 and Navi 14 GPU designs have leaked, pointing towards Navi/RDNA products with as many as 4096 stream processors. Yes, AMD will have a proper challenger to Nvidia's RTX 2080 Super, assuming that these rumours are correct. 

On the low-end, we have Navi 14, which allegedly offers up to 1536 stream processors and acts as a replacement for AMD's RX 570, RX 580 and RX 590 graphics cards. This will take the fight to Nvidia's Geforce GTX 1660, which is perhaps why Nvidia seemingly has a GTX 1660 Super in the works. 

On the high-end, we have AMD's Navi 12 graphics chip, which basically acts as an RDNA version of AMD's RX Vega 64 silicon on 7nm with GDDR6 memory. That's right, AMD's Navi architecture with a stream processor count of up to 4096. That's 60% more stream processors than the Radeon RX 5700 XT. With this card, AMD has the chance to surpass Nvidia's RTX 2080 Super.


 

Leaked Navi 12 (RX 5800/5800XT)AMD RX 5700 XT 50th Ann. EditionAMD RX 5700 XTAMD RX 5700Leaked Navi 14 (5600/5600XT)
Core DesignNavi 12Navi 10Navi 10Navi 10Navi 14
Process Tech/ Architecture7nm Navi7nm Navi7nm Navi7nm Navi7nm Navi
Stream 
Processors
3328-40962560256023041536
Base
Clock 
-1680MHz1605MHz1465MHz-

Gaming
Clock

-1830MHz1755MHz1625MHz-
Boost
Clock
-1980MHz1905MHz1725MHz-
Memory

8GB GDDR68GB GDDR68GB GDDR68GB GDDR64/8GB GDDR6
Memory
Bus
256-bit256-bit256-bit256-bit128-bit
Memory Clock12-16Gbps14Gbps14Gbps14Gbps14-15Gbps
Memory 
Bandwidth
448-512GBs448GB/s448GB/s448GB/s190-240GB/s
Cooler Design?Blower FanBlower FanBlower Fan?


Details of AMD's Navi 14 and Navi 12 chips leak - Big Navi and Small Navi
  

If these rumoured specifications are correct, AMD has set themselves up for a lot of success in late 2019, challenging Nvidia with strong products in all areas of the GPU market. The question now is, when does Nvidia plan to respond with their own post-Turing graphics offerings? Nvidia still has the option to jump to a 7nm lithography node.

You can join the discussion on AMD's rumoured Navi 12 and Navi 14 graphics cores on the OC3D Forums.  

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Most Recent Comments

30-09-2019, 06:53:41

Giggyolly
128-Bit? that must be the wrong way round

Other than that, I'd like to see 12gb on big Navi.Quote

30-09-2019, 07:46:11

tgrech
Quote:
Originally Posted by Giggyolly View Post
128-Bit? that must be the wrong way round
Yeah think that's a small error in that table. Also the leaked 3 GB ‘7340:CF’ model (5600 non-X?) not mentioned here but found here (https://compubench.com/device.jsp?be...testgroup=info) would be 96-bit(Assuming the full small chip is 128-bit as claimed in the leaks and as would be logical really), likely just cut down rather than a separate design.Quote

30-09-2019, 07:55:54

Bagpuss
I'd imagine those 5800/XT specs give a pretty good indication of what will be inside the PS5/Xbox Two APU as well..with some hardware based ray tracing tech bolted on for good measure.Quote

30-09-2019, 08:06:04

WYP
Quote:
Originally Posted by Giggyolly View Post
128-Bit? that must be the wrong way round

Other than that, I'd like to see 12gb on big Navi.
Yeah. A little mixed up there. Fixed now.

TBH, Does the 5800XT really need 12GB of VRAM? I have never heard anyone say their 5700XT benefits from GDDR6 overclocking. Not many games use more than 8GB of VRAM either, even at 4K.

With 16Gbps GDDR6 memory being available, I'd guess that a 256-bit memory bus is fine for big Navi. It's enough for the RTX 2080 Super.Quote

30-09-2019, 08:27:30

Giggyolly
Quote:
Originally Posted by WYP View Post
Yeah. A little mixed up there. Fixed now.

TBH, Does the 5800XT really need 12GB of VRAM? I have never heard anyone say their 5700XT benefits from GDDR6 overclocking. Not many games use more than 8GB of VRAM either, even at 4K.

With 16Gbps GDDR6 memory being available, I'd guess that a 256-bit memory bus is fine for big Navi. It's enough for the RTX 2080 Super.
Depends where it lands performance-wise. I'd like the AMD card to have a 'one-up' on there competitor card though. And Radeon has been sticking 8gb on cards with the 390, so why not lol.
What I would say is that the 2080S is getting close to it's memory limit, which can be seen in certain games. Presumably it can only get worse in the future.Quote
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