AMD working on producing Radeon RX 6900 XTX based on Big Navi 21 GPU with 18Gbps memory

According to recent reports, AMD is currently working on its fastest Big Navi 21 GPU-based graphics card which will be the Radeon RX 6900 XTX. The latest leak comes from a slide that has been leaked by CyberPunkCat, and it states that the card will feature faster memory and clock speeds.

As of now, AMD’s Radeon RX 6900 XT has two variations, one is a standard variant featuring the Navi 21 XT GPU and another one is a binned variant featuring the Navi 21 XTXH GPU. Both are however known as Radeon RX 6900 XT and according to sources, AMD could be working on a third variant combining the Navi 21 XTXH GPU with faster memory, allowing for faster performance in gaming that will surpass NVIDIA’s GeForce RTX 3090.

coming to the leaked information, the AMD Radeon RX 6900 XTX will feature a compute horsepower of 24.93 TFLOPs. This is higher than the existing Radeon RX 6900 XT that features a compute horsepower of 23.04 TFLOPs with a boost clock of 2250 MHz. On the other hand, with Navi 21 XTXH GPU on the Radeon RX 6900 XTX, it should feature a boost clock of 2435 MHz. This is an amazing 8% improvement in the boost clock for an 8% compute power increase.

There is also a second chance that is coming to the card in the form of memory. According to the rumors, AMD’s Radeon RX 6900 XT will be getting 18 Gbps memory dies delivering a nice boost in bandwidth over the existing 16 Gbps G6 chips.

The card will also retain its 16 GB GDDR6 memory capacity and with these updates, the bandwidth should be boosted to 576 GB/s which is a 12.5% improvement over the reference card. The existing Navi 21 XT-based reference model has a TDP of 300W so in the new and updated model, we can expect the TDP to be around 350W.

AMD Radeon RX 6000 Series “RDNA 2” Graphics Card Lineup:

Graphics CardAMD Radeon RX 6600AMD Radeon RX 6600 XTAMD Radeon RX 6700AMD Radeon RX 6700 XTAMD Radeon RX 6800AMD Radeon RX 6800 XTAMD Radeon RX 6900 XTAMD Radeon RX 6900 XT Liquid CooledAMD Radeon RX 6900 XTX
GPUNavi 23 (XL?)Navi 23 (XT?)Navi 22 (XL?)Navi 22 (XT?)Navi 21 XLNavi 21 XTNavi 21 XTXNavi 21 XTXHNavi 21 XTXH
Process Node7nm7nm7nm7nm7nm7nm7nm7nm7nm
Die Size237mm2237mm2336mm2336mm2520mm2520mm2520mm2520mm2520mm2
Transistors11.06 Billion11.06 Billion17.2 Billion17.2 Billion26.8 Billion26.8 Billion26.8 Billion26.8 Billion26.8 Billion
Compute Units283236406072808080
Stream Processors179220482304256038404608512051205120
TMUs/ROPsTBA128/64TBA160/64240 / 96288 / 128320 / 128320 / 128320 / 128
Game ClockTBA2359 MHzTBA2424 MHz1815 MHz2015 MHz2015 MHz2250 MHzTBA
Boost ClockTBA2589 MHzTBA2581 MHz2105 MHz2250 MHz2250 MHz2345 MHz2435 MHz
FP32 TFLOPsTBA10.6 TFLOPsTBA13.21 TFLOPs16.17 TFLOPs20.74 TFLOPs23.04 TFLOPs24.01 TFLOPs24.93 TFLOPs
Memory Size8 GB GDDR6 + 32 MB Infinity Cache?8 GB GDDR6 + 32 MB Infinity Cache12 GB GDDR6 + 96 MB Infinity Cache?12 GB GDDR6 + 96 MB Infinity Cache16 GB GDDR6 +128 MB Infinity Cache16 GB GDDR6 +128 MB Infinity Cache16 GB GDDR6 +128 MB Infinity Cache16 GB GDDR6 +128 MB Infinity Cache16 GB GDDR6 +128 MB Infinity Cache
Memory Bus128-bit?192-bit192-bit192-bit256-bit256-bit256-bit256-bit256-bit
Memory Clock16 Gbps?16 Gbps16 Gbps?16 Gbps16 Gbps16 Gbps16 Gbps18 Gbps18 Gbps
Bandwidth256 GB/s?256 GB/s384 GB/s384 GB/s512 GB/s512 GB/s512 GB/s576 GB/s576 GB/s
TDPTBA160WTBA230W250W300W300W330W330W
PriceTBA$379 USTBA$479 US$579 US$649 US$999 US~$1199 US~$1199 US

source

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