AMD Radeon RX 6600 XT vs NVIDIA GeForce RTX 4090 Laptop

Compare AMD Radeon RX 6600 XT 8 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 6600 XT

NVIDIA GeForce RTX 4090 Laptop

Benchmark Score

Overall Score

General gaming and workstation score

5600 points

14473 points

158% significantly better overall score

Flux Core frame rate

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

116 FPS

355 FPS

239 FPS significantly higher Flux Core frame rate

Electron frame rate

Randomly generated noise sphere test

85 FPS

182 FPS

96 FPS significantly higher Electron frame rate

City frame rate

Procedurally generated city scene with voxel rendering

102 FPS

253 FPS

151 FPS significantly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

49 FPS

145 FPS

96 FPS significantly higher Clouds frame rate

Free GPU Benchmark

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Other Benchmarks

Blender score

Cycles Render (Samples per minute)

1068.60 points

7059.26 points

560% significantly higher Blender score

Geekbench 6 (OpenCL) score

OpenCL compute benchmark

82739 points

181715 points

119% significantly higher Geekbench 6 (OpenCL) score

Geekbench 6 (Vulkan) score

Vulkan compute benchmark

93271 points

172409 points

84% significantly higher Geekbench 6 (Vulkan) score

Specifications

Core Clock Speed

Nominal chip frequency

1968 MHz

47% significantly higher core clock speed

1335 MHz

Boost Clock Speed

Higher turbo frequency when power conditions are met

2589 MHz

52% significantly higher boost clock speed

1695 MHz

Memory Bus Width

Number of parallel lines to the memory chips

128 Bit

256 Bit

100% significantly larger memory bus width

Memory Bandwidth

Data transfer speed between GPU core and memory

256 GB/s

576 GB/s

125% significantly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

160 W

120 W

33% slightly lower TDP

Pixel Rate

Number of pixels that can be rendered per second

165.7 Gigapixels/s

189.8 Gigapixels/s

14% slightly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

331.4 Gigatexels/s

515.3 Gigatexels/s

55% significantly higher texture rate

Shading Units

Number of processors dedicated to shader processing

2048

9728

374% significantly more shading units

Texture Mapping Units

Number of processors dedicated to applying textures

128

304

137% significantly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

112

75% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

90th of 597

20th of 597

Family

The product line

Radeon RX 6000 Series

Release date

The official date of release of this chip

2021 November

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 6600 XT vs GeForce RTX 4090 Laptop comparison

For gaming, the GeForce RTX 4090 Laptop graphics card is better than the Radeon RX 6600 XT in our tests.

Our database shows that the Radeon RX 6600 XT has a significantly higher core clock speed. The core clock speed (or base speed) is the frequency at which the GPU core runs. This metric makes sense when comparing GPUs of a similar architecture or generation. In addition, the Radeon RX 6600 XT also has a significantly higher boost clock speed. This is a frequency that can be reached if the GPU is cooled sufficiently and has enough power.

In addition, the GeForce RTX 4090 Laptop has a slightly lower TDP at 120 W when compared to the Radeon RX 6600 XT at 160 W. Heat output doesn't match power consumption directly but, it's a good estimate.

In terms of raw gaming performance in our GPU benchmark, the GeForce RTX 4090 Laptop is better than the Radeon RX 6600 XT.