Home / Technology / AMD Navi 21 XT “Big Navi” GPU for Radeon RX 6900 XT is clocked at 2.4 GHz, 16 GB GDDR6 VRAM and 255 W TDP

AMD Navi 21 XT “Big Navi” GPU for Radeon RX 6900 XT is clocked at 2.4 GHz, 16 GB GDDR6 VRAM and 255 W TDP



AMD Navi 21 XT “Big Navi” GPU specification for the Radeon RX 6900 XT graphics card was reported by Patrick Schur who was very credible about his information. According to the reported specs, the AMD Radeon RX 6900 XT appears to be a graphics card beast with crazy clocks.

AMD Radeon RX 6900 XT with Navi 21 XT “Big Navi” GPU to feature insane 2.4GHz gaming clock, 16GB GDDR6 VRAM and 255W TGP

Patrick states in his tweet that the AMD Navi 21 XT GPU which is supposedly the “Big Navi” GPU that all the enthusiastic gamers have been waiting for will be a crazy chip. As per previous reports, the 21 XT GPU will be featured on the Radeon RX 6900 XT graphics card, but there are also reports that there is a faster XTX variant that would be even faster.

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The Navi 21 XT GPU will reportedly be the powerhouse of an extension chip game clock around 2.4 GHz what are the fastest clock speeds we will see on a consumer desktop grade graphics card. This also suggests that we can expect even higher boost clocks considering that the game and boost clocks are separate, as the game clock is the average clock rate the GPU can maintain in games while the boost clock is the peak clock. that the GPU can achieve.

The GPU is also rumored to be equipped with a TGP (Total Graphics Power) of 255W. This doesn’t mean the full power of the card, but rather the GPU itself. The GeForce RTX 3080 for comparison has a TDP of 320W and the GeForce RTX 3070 has a TDP of 220W.

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The graphics card based on the Navi 21 XT GPU, which is reportedly the Radeon RX 6900 XT, would have 16GB of GDDR6 memory which is also what we have seen in various previous leaks. As for the comparative measurements, the performance appears to be very close to the NVIDIA GeForce RTX 3080 graphics card, which is very impressive for AMD, and if they can cost the Big Navi graphics card around $ 499- $ 599 US then they will. have a killer 4K solution in their hands.

Rogame had already indicated at least four SKUs for the Navi 21 GPU (RDNA 2) but we didn’t know anything other than the PCI IDs. There is active speculation going on right now regarding the exact specs and configurations of each SKU in terms of core count, texture mapping unit and ROP as we now know the GPU is made up of 5120 flow processors packed in 80 CU.

According to Rogame, the Navi 21 GPU currently has the following SKUs:

  • Navi 21 XTX (0x731F: D0)
  • Navi 21 XT (0x731F: D1)
  • Navi 21 XL (0x731F: D3)
  • Navi 21 XLE (0x731F: DF)

Comparison of AMD’s flagship RTG GPUs:

Graphic card AMD Radeon R9 Fury X AMD Radeon RX Vega 64 AMD Radeon VII AMD Radeon RX 5700 XT AMD Radeon RX 6900 XT
GPU codename Fiji XT Vega 10 XT Vega 20 XT Ships 10 XT Ships 21 XT?
GPU process 28nm 14nm 7nm 7nm 7nm +?
Transistor 8.9 billion 12.5 billion 13.3 billion 10.3 billion TBA
Mold size 596mm2 495mm2 331mm2 251mm2 ~ 500-540mm2
Calculation unit 64 64 60 40 80?
Stream processors 4096 4096 3840 2560 5120?
TMU / ROP 256/64 256/64 240/64 160/64 TBA
Basic watch 1050 MHz 1247 MHz 1400 MHz 1605 MHz TBA
Increase the clock 1050 MHz 1546 MHz 1750 MHz 1905 MHz TBA
Memory size 4GB HBM1 8 GB HBM2 16GB HBM2 8GB GDDR6 16 GB GDDR6?
Memory bus 4096 bit 2048 bit 4096 bit 256 bit 256 bit?
Bandwidth 512 GB / s 484 GB / s 1024 GB / s 448 GB / s 512 GB / s?
TDP 275W 295W 295W 225W 255W?
Price $ 649 $ 499 $ 699 $ 399 US TBA
To launch 2015 2017 2019 2019 2020

AMD Radeon RX 6900 Series with Triple Slot Cooling Solution:

As for the designs themselves, the cooling design of the flagship Radeon RX 6000 looks amazing with the red and black design. The board features a triple axial tech fan configuration on the cover and has a large aluminum heat sink that slides underneath it. The board has an LED illuminated Radeon logo on the side and there’s a large cutout on the side to allow the fans to let the hot air out. This design is very reminiscent of the NVIDIA GeForce RTX 20 Founders Edition series cooler. The card will be equipped with dual 8-pin power and the display ports will include a USB Type-C (VirtualLink), 1 HDMI and 2 DisplayPort connector.

The board also features a patterned back plate along with a retention bracket to hold the fridge in place. The Radeon RX “Big Navi” GPU looks like it will come in the standard 2-slot reference design, which is the same as NVIDIA’s flagship RTX 3080 but not as large as the triple-slot GeForce RTX 3090.

AMD will officially unveil its family of Radeon RX 6000 series graphics cards on October 28th. The second half of 2020 would certainly be an interesting time for all hardware enthusiasts and traditional PC gamers who are looking forward to updating their PCs with better hardware.

How fast will Radeon RX graphics cards powered by AMD’s Big Navi GPU (RDNA 2) be?




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