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AMD's 'Big Navi' Radeon RX 6900 XT will challenge the best of the NVIDIA RTX 30 series with 80 CUs, 16 GB of GDDR6 VRAM and over 2 GHz clock speeds

AMD is bringing its 'Big Navi' cards to the party on October 28. (Image source: AMD)
AMD is bringing its 'Big Navi' cards to the party on October 28. (Image source: AMD)
The RX 6900 XT will deliver clock speeds over 2,300 MHz with 80 CUs and 16 GB of GDDR6 VRAM, according to a new leak. Four other cards will make up AMD's 'Big Navi' lineup, as will AIB cards that will venture to an eye-watering 2,577 MHz.

Videocardz claims to have received information about AMD's Radeon RX 6000 series product stack. After plenty of speculation concerning the clock speeds and power consumption of AMD's upcoming, the website has spelt out the specifications of the company's next four cards. Coreteks published similar details earlier, but Videocardz has added the RX 6700 and RX 6700 XT into the mix.

According to Videocardz, the RX 6700 will be the entry-level card and will be based on AMD's Navi 22 GPU. This card will have a memory bus of 192-bits, but other specifications remain unknown. AMD has apparently pegged the RX 6700 for release in January, so it will not be launched in October. Videocardz adds that the RX 6700 will be joined in early 2021 by the RX 6700 XT, another Navi 22 card. The website claims that the RX 6700 XT will have 40 Compute Units (CUs), along with a 192-bit bus and 12 GB of GDDR6 VRAM. Clock speeds are unknown at this stage, though.

Radeon RX 6700 Radeon RX 6700 XT Radeon RX 6800 Radeon RX 6800XT Radeon RX 6900XT
GPU Navi 22 Navi 22 Navi 21 XL Navi 21 XT Navi 21 XTX
Compute Units TBC 40 64 72 80
Game clock TBC TBC 1,815 MHz 2,015 MHz 2,040 MHz
Boost clock TBC TBC 2,105 MHz 2,250 MHz 2,330 MHz
VRAM TBC 12 GB GDDR6 16 GB GDDR6 16 GB GDDR6 16 GB GDDR6
Memory Bus 192-bit 192-bit 256-bit 256-bit 256-bit
Memory Speed TBC TBC 16 Gbps 16 Gbps 16 Gbps
Announcement date January 2021 January 2021 October 2020 October 2020 October 2020

Next up is the RX 6800 and RX 6800 XT, which will be based on the Navi 21 XL and Navi 21 XT GPUs, respectively. These cards will both have 256-bit buses and 16 GB of GDDR6 VRAM, but the RX 6800 XT will have higher clock speeds and 8 more CUs.

At the top of the product stack is the RX 6900 XT, based on AMD's Navi 21 XTX GPU. AMD will retain exclusivity over the RX 6900 XT initially and will also only produce a limited quantity of cards. The Navi 21 XTX appears to be the full Navi 21 GPU, with its 80 CUs complemented by 16 GB of GDDR6 VRAM operating on a 256-bit bus. The RX 6900 XT will be capable of reaching 2,330 MHz too.

Videocardz claims that add-in board (AIB) partners will release custom RX 6000 series cards in November. AIB cards may offer higher boost clocks than AMD's reference cards, too. One such card, produced by a 'very special board partner', may feature a boost clock of up to 2,577 MHz - Igor's Lab claims. The custom card may even be capable of 2,800 MHz, but possibly only on LH2 cooling. Videocardz reckons that this will be an RX 6800 XT card, seeing as custom RX 6900 XT will be unavailable at launch.

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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2020 10 > AMD's 'Big Navi' Radeon RX 6900 XT will challenge the best of the NVIDIA RTX 30 series with 80 CUs, 16 GB of GDDR6 VRAM and over 2 GHz clock speeds
Alex Alderson, 2020-10-21 (Update: 2020-10-23)
Alex Alderson
Alex Alderson - News Editor - @aldersonaj
Prior to writing and translating for Notebookcheck, I worked for various companies including Apple and Neowin. I have a BA in International History and Politics from the University of Leeds, which I have since converted to a Law Degree. Happy to chat on Twitter or Notebookchat.