AMD Radeon RX 6850M XT vs NVIDIA GeForce RTX 3090 Ti vs NVIDIA GeForce RTX 3080 12 GB

AMD Radeon RX 6850M XT

The AMD Radeon RX 6850M XT is a mobile high-end graphics card for gaming laptops. It uses the Navi 22 chip based on the new RDNA 2 architecture. It uses all 2,560 shaders (= 40 CUs), 160 TMUs, and 64 ROPs and therefore is similar to the desktop Radeon RX 6700 XT. The 192 Bit memory system connects 12 GB GDDR6 with 18 Gbps memory speed. Furthermore, the RX6850MXT includes 96 MB Infinity Cache. AMD specified 2.463 GHz game clock for 13.3 TFLOPS theoretical performance (SP) at a TDP of 135-165 Watt. The difference to the previous RX 6800M is the slightly increased clock speed of the CPU and GPU.

The gaming performance of the RX 6850M XT should be slightly faster than the old RX 6800M which positioned itself between a RTX 3070 and 3080 for laptops. For 

The Navi 22 chip is manufactured at TSMC in the modern 7nm process.

NVIDIA GeForce RTX 3090 Ti

The Nvidia GeForce RTX 3090 Ti is a high-end desktop graphics card based on the Ampere generation. It was announced early 2022 the fastest desktop gaming graphics card.

It uses the big GA102 chip and offers 10,752 shaders and 24 GB GDDR6X graphics memory. The RTX3090ti is rated at 450 Watt.

NVIDIA GeForce RTX 3080 12 GB

The Nvidia GeForce RTX 3080 12GB is high-end desktop graphics card based on the Ampere generation. It uses the big GA102 chip and offers 8,704 shaders and 12 GB GDDR6X graphics memory. Compared to the older 10 GB model, the 12 GB model offers more bandwidth and therefore a higher TDP.

The gaming performance in 4k is clearly better than the old GeForce RTX 2080 Ti (approximately 15% faster). Therefore, even demanding games should run with maximum detail settings in 4k. Enabling raytracing will however reduce the framerate and therefore maximum details won't be playable. 

The RTX3080 is produced in 8nm at Samsung and rated at 350 Watt.