RTX 5090 vs 5080 Laptops: Which GPU Wins?

01

Preface

In previous articles, I have already shared a gaming performance comparison between the GeForce RTX 5090 and GeForce RTX 5080, with the final conclusion being that the former outperforms the latter by about 60%, showing a significant performance gap.

Compared to the desktop version of the GeForce RTX 5090, the mobile version has much lower specifications, with its memory bus width and number of CUDA cores only half of those of the desktop version. So, how does it actually perform? This is something that many users who prioritize laptops over desktop PCs are very interested in.

This article compares the gaming performance of the mobile versions of the GeForce RTX 5090 and GeForce RTX 5080, for those who are interested.

02

Specifications Comparison

The GeForce RTX 5090 mobile version was released on January 6, 2025. It uses the GB203 GPU, manufactured with TSMC’s 5nm process, and features 10,496 CUDA cores, 112 raster units, 328 texture units, 82 streaming multiprocessors, 328 tensor cores, 82 ray tracing cores, and 64MB of L2 cache.

It has a standard clock speed of 990 MHz and a boost clock of up to 1515 MHz. It comes with 24GB of GDDR7 video memory, a 256-bit memory bus width, a memory speed of 28Gbps, memory bandwidth of 896GB/s, FP32 floating-point performance of 31.80 TFLOPS, and a TDP of 95W.

The GeForce RTX 5080 mobile version was released on January 6, 2025. It also uses the GB203 GPU and TSMC’s 5nm process, featuring 7680 CUDA cores, 96 raster units, 240 texture units, 60 streaming multiprocessors, 60 tensor cores, 60 ray tracing cores, and 64MB of L2 cache.

Its standard clock speed is 975 MHz, with a maximum clock speed of 1500 MHz. It is equipped with 16GB of GDDR7 video memory, a 256-bit memory bus width, a memory speed of 28Gbps, memory bandwidth of 896GB/s, FP32 floating-point performance of 23.04 TFLOPS, and a TDP of 80W.

03

Test Platform Configuration

The test was conducted on two laptops with very similar configurations:

System A: Processor is Core Ultra 9 285HX, memory is 64GB DDR5 5600 MT/s, graphics card is GeForce RTX 5090 24GB, storage is 2TB M.2 SSD.
System B: Processor is Core Ultra 9 285HX, memory is 32GB DDR5 5600 MT/s, graphics card is GeForce RTX 5080 16GB, storage is 1TB M.2 SSD.

04

Game Testing (RTX 5090 vs 5080 Laptops)

Seven games were tested below, all under 1440P high-quality settings. In the image series, the left side represents the GeForce RTX 5080 mobile platform, and the right side represents the GeForce RTX 5090 mobile platform.

1. Ghostwire: Tokyo

• RTX 5080 Mobile: Avg FPS: 119, Min FPS: 108, Frame Time: 8.3ms, CPU Usage: 33%, Power: 65W, Temp: 71°C, RAM: 13.8GB, GPU Usage: 98%, VRAM: 7.8GB, GPU Power: 168W, GPU Temp: 71°C
• RTX 5090 Mobile: Avg FPS: 131, Min FPS: 119, Frame Time: 7.1ms, CPU Usage: 32%, Power: 76W, Temp: 73°C, RAM: 14.0GB, GPU Usage: 99%, VRAM: 8.0GB, GPU Power: 164W, GPU Temp: 71°C
• Result: RTX 5090 Mobile leads by 12 FPS (≈10%), with 1ms lower frame time.

2. Cyberpunk 2077

• RTX 5080 Mobile: Avg FPS: 109, Min FPS: 97, Frame Time: 8.7ms, CPU Usage: 31%, Power: 69W, Temp: 72°C, RAM: 13.3GB, GPU Usage: 99%, VRAM: 7.3GB, GPU Power: 165W, GPU Temp: 71°C
• RTX 5090 Mobile: Avg FPS: 121, Min FPS: 111, Frame Time: 7.5ms, CPU Usage: 35%, Power: 72W, Temp: 71°C, RAM: 13.2GB, GPU Usage: 99%, VRAM: 7.1GB, GPU Power: 165W, GPU Temp: 71°C
• Result: RTX 5090 Mobile leads by 12 FPS (≈11%), 1ms lower frame time.

3. A Plague Tale: Requiem

• RTX 5080 Mobile: Avg FPS: 103, Min FPS: 91, Frame Time: 9.9ms, CPU Usage: 37%, Power: 61W, Temp: 72°C, RAM: 12.4GB, GPU Usage: 99%, VRAM: 8.0GB, GPU Power: 167W, GPU Temp: 71°C
• RTX 5090 Mobile: Avg FPS: 125, Min FPS: 114, Frame Time: 7.7ms, CPU Usage: 35%, Power: 72W, Temp: 71°C, RAM: 12.0GB, GPU Usage: 99%, VRAM: 8.0GB, GPU Power: 165W, GPU Temp: 71°C
• Result: RTX 5090 Mobile leads by 22 FPS (≈21%), 2ms lower frame time.

4. Horizon Zero Dawn

• RTX 5080 Mobile: Avg FPS: 88, Min FPS: 77, Frame Time: 12.6ms, CPU Usage: 37%, Power: 61W, Temp: 72°C, RAM: 13.6GB, GPU Usage: 99%, VRAM: 7.9GB, GPU Power: 167W, GPU Temp: 71°C
• RTX 5090 Mobile: Avg FPS: 99, Min FPS: 89, Frame Time: 10.7ms, CPU Usage: 34%, Power: 75W, Temp: 72°C, RAM: 13.4GB, GPU Usage: 99%, VRAM: 7.7GB, GPU Power: 163W, GPU Temp: 72°C
• Result: RTX 5090 Mobile leads by 11 FPS (≈13%), 2ms lower frame time.

5. Black Myth: Wukong

• RTX 5080 Mobile: Avg FPS: 78, Min FPS: 67, Frame Time: 13.9ms, CPU Usage: 32%, Power: 68W, Temp: 73°C, RAM: 16.4GB, GPU Usage: 99%, VRAM: 8.3GB, GPU Power: 164W, GPU Temp: 71°C
• RTX 5090 Mobile: Avg FPS: 91, Min FPS: 79, Frame Time: 11.3ms, CPU Usage: 30%, Power: 74W, Temp: 72°C, RAM: 16.3GB, GPU Usage: 99%, VRAM: 8.1GB, GPU Power: 160W, GPU Temp: 71°C
• Result: RTX 5090 Mobile leads by 13 FPS (≈17%), 2ms lower frame time.

6. Hogwarts Legacy

• RTX 5080 Mobile: Avg FPS: 90, Min FPS: 79, Frame Time: 12.5ms, CPU Usage: 38%, Power: 63W, Temp: 71°C, RAM: 18.4GB, GPU Usage: 99%, VRAM: 8.2GB, GPU Power: 169W, GPU Temp: 72°C
• RTX 5090 Mobile: Avg FPS: 102, Min FPS: 90, Frame Time: 10.7ms, CPU Usage: 33%, Power: 74W, Temp: 71°C, RAM: 18.2GB, GPU Usage: 99%, VRAM: 8.0GB, GPU Power: 162W, GPU Temp: 71°C
• Result: RTX 5090 Mobile leads by 12 FPS (≈13%), 2ms lower frame time.

7. The Last of Us Part II

• RTX 5080 Mobile: Avg FPS: 88, Min FPS: 78, Frame Time: 11.4ms, CPU Usage: 38%, Power: 64W, Temp: 71°C, RAM: 18.0GB, GPU Usage: 98%, VRAM: 9.6GB, GPU Power: 161W, GPU Temp: 72°C
• RTX 5090 Mobile: Avg FPS: 99, Min FPS: 89, Frame Time: 9.4ms, CPU Usage: 32%, Power: 76W, Temp: 73°C, RAM: 18.0GB, GPU Usage: 99%, VRAM: 9.3GB, GPU Power: 164W, GPU Temp: 71°C
• Result: RTX 5090 Mobile leads by 11 FPS (≈13%), 2ms lower frame time.

05

Comparative Conclusion

Overall, compared to the GeForce RTX 5080 mobile version, the GeForce RTX 5090 mobile version indeed has a higher overall performance level (for example, it generally consumes less CPU performance). However, the gap is not as significant as that between the desktop versions; it can only be described as a slight lead.

Based on the comprehensive calculation of the above data, the overall performance of the GeForce RTX 5090 mobile version is approximately 14% higher than that of the GeForce RTX 5080 mobile version. This is the final conclusion of this article, for reference only.

Related:

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2. RX 7700 XT vs RTX 5060 Ti 16GB – Ultimate GPU Battle
3. RTX 5070 Ti and Ryzen 5600X: Game Benchmarks Reveal All
4. RX 7600 vs RTX 5060: Which GPU Delivers More FPS?
5. RX 9070 XT vs Ryzen 5 7500F: Game Benchmarks
6. GeForce RTX 5060 or 3070? Performance Compared
7. RTX 5060 Ti with i5 12400F: Gaming Bottleneck Check
8. 4K Gaming Battle: RX 9070 XT vs RTX 4080 SUPER

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