AMD Radeon RX 6900 XT vs NVIDIA GeForce RTX 4090 Laptop

Compare AMD Radeon RX 6900 XT 16 GB vs NVIDIA GeForce RTX 4090 Laptop, specs and GPU benchmark score. Which is the better graphics card for the money?

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Specifications
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GPU Comparison

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AMD Radeon RX 6900 XT

NVIDIA GeForce RTX 4090 Laptop

Benchmark Score

Overall Score

General gaming and workstation score

13926 points

14473 points

3% slightly better overall score

Flux Core frame rate

Volumetric ray casting test, a computationally expensive method of rendering high-quality scenes

280 FPS

355 FPS

75 FPS slightly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

206 FPS

24 FPS slightly higher Electron frame rate

182 FPS

City frame rate

Procedurally generated city scene with voxel rendering

252 FPS

253 FPS

1 FPS slightly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

121 FPS

145 FPS

25 FPS slightly higher Clouds frame rate

Free GPU Benchmark

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Other Benchmarks

Blender score

Cycles Render (Samples per minute)

2478.22 points

7059.26 points

184% significantly higher Blender score

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

167644 points

181715 points

8% slightly higher Geekbench 6 (OpenCL) score

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

171121 points

172409 points

0.75% slightly higher Geekbench 6 (Vulkan) score

Specifications

Core Clock Speed

Nominal chip frequency

1825 MHz

36% slightly higher core clock speed

1335 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

2250 MHz

32% slightly higher boost clock speed

1695 MHz

Memory Bus Width

Number of parallel lines to the memory chips

256 Bit

Identical

256 Bit

Memory Bandwidth

Data transfer speed between GPU core and memory

512 GB/s

576 GB/s

12% slightly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

300 W

120 W

150% significantly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

288 Gigapixels/s

51% significantly higher pixel rate

189.8 Gigapixels/s

Texture Rate

Number of textured pixels that can be rendered per second

720 Gigatexels/s

39% slightly higher texture rate

515.3 Gigatexels/s

Shading Units

Number of processors dedicated to shader processing

5120

9728

89% significantly more shading units

Texture Mapping Units

Number of processors dedicated to applying textures

320

5% slightly more texture mapping units

304

Render Output Processors

Number of processors dedicated to final pixel rendering

128

14% slightly more render output processors

112

Other details

Rank

Ranking in the hardwareDB database

26th of 597

20th of 597

Family

The product line

Radeon RX 6000 Series

Release date

The official date of release of this chip

2020 August

2023 January

Memory Type

The type of memory used by this chip

GDDR6

DirectX Support

Maximum version of DirectX supported

12.0

OpenGL Support

Maximum version of OpenGL supported

4.6

Radeon RX 6900 XT vs GeForce RTX 4090 Laptop specs and performance

In our benchmarks, the GeForce RTX 4090 Laptop beats the Radeon RX 6900 XT in gaming performance.

In our comparison, the Radeon RX 6900 XT has a slightly higher core clock speed. This is the frequency at which the graphics core is running at. While not necessarily an indicator of overall performance, this metric can be useful when comparing two GPUs based on the same architecture. In addition, the Radeon RX 6900 XT also has a slightly higher boost clock speed. The boost clock speed is the frequency that the GPU core can reach if the temperature is low enough. The allows for higher performance in certain scenarios.

In addition, the GeForce RTX 4090 Laptop has a significantly lower TDP at 120 W when compared to the Radeon RX 6900 XT at 300 W. TDP (Thermal Design Power) measures total heat output from the chip.

According to the results of the hardwareDB benchmark utility, the GeForce RTX 4090 Laptop is faster than the Radeon RX 6900 XT.