RTX 5090 SE Mobile vs RTX 4090
Head-to-head specifications
| Metric | RTX 5090 SE Mobile | RTX 4090 | Difference |
|---|---|---|---|
| 3DMark Time Spy | 22,752 | 33,032 | -31.1% |
| Avg FPS @ 1080p | 171 | 240 | -28.8% |
| Avg FPS @ 1440p | 108 | 153 | -29.4% |
| Avg FPS @ 4K | 61 | 87 | -29.9% |
| FP32 compute (TFLOPS) | 56.9 | 82.6 | -31.1% |
| VRAM | 16 GB GDDR7 | 24 GB GDDR6X | — |
| Memory bandwidth (GB/s) | 1,344 | 1,008 | +33.3% |
| TDP (W) | 300 | 450 | — |
| Stable Diffusion (it/s) | 22.8 | 33.0 | -30.9% |
| LLM inference (tokens/s) | 107 | 80 | +33.8% |
- RTX 4090 averages 153 fps at 1440p versus 108 fps — about 29% faster.
- RTX 5090 SE Mobile draws less power (300W vs 450W).
Verdict: RTX 5090 SE Mobile or RTX 4090?
RTX 5090 SE Mobile advantages
- Memory bandwidth (+25%)
- Local LLM inference (+25%)
- Power efficiency (+33%)
RTX 4090 advantages
- 1440p gaming (+29%)
- 4K gaming (+30%)
- Synthetic benchmark performance (+31%)
- Video memory (+33%)
- AI image generation (+31%)
Which should you choose?
- Choose the RTX 5090 SE Mobile if you work with high-resolution textures or memory-bound workloads.
- Choose the RTX 4090 if you game at 1440p.
- Choose the RTX 5090 SE Mobile if you run local LLMs and AI inference.
RTX 5090 SE Mobile vs RTX 4090: which should you choose?
RTX 5090 SE Mobile — NVIDIA laptop graphics card (2026, Blackwell) with 16 GB of GDDR7, averaging 108 fps at 1440p.
RTX 4090 — NVIDIA desktop graphics card (2022, Ada Lovelace) with 24 GB of GDDR6X, averaging 153 fps at 1440p; launched at $1,599.
RTX 5090 SE Mobile vs RTX 4090: RTX 4090 is faster for gaming. RTX 4090 averages 153 fps at 1440p versus 108 fps — about 29% faster. RTX 5090 SE Mobile draws less power (300W vs 450W).
1080p, 1440p and 4K
At 1440p — the most common enthusiast resolution — the RTX 4090 averages 153 fps against 108. At 4K (61 vs 87 fps) VRAM (16GB vs 24GB) and memory bandwidth matter more.
AI and creator workloads
Beyond gaming, the RTX 4090 is quicker for AI image generation (33.0 vs 22.8 it/s in Stable Diffusion) and local LLM inference (107 vs 80 tokens/s), which increasingly matters for creators and developers.
Power and value
Board power is 300 W versus 450 W, which affects PSU headroom, case cooling and noise.
The verdict
Both are credible choices in the graphics card comparison space; the specification table above lays out every metric so you can weigh the trade-offs that matter to you. Pick the one whose strengths line up with how you will actually use it.
Frequently asked questions
Is the RTX 5090 SE Mobile better than the RTX 4090?
RTX 4090 takes the overall edge, though RTX 5090 SE Mobile wins in specific areas worth weighing. RTX 4090 averages 153 fps at 1440p versus 108 fps — about 29% faster.
What is the main difference between the RTX 5090 SE Mobile and the RTX 4090?
RTX 4090 averages 153 fps at 1440p versus 108 fps — about 29% faster. RTX 5090 SE Mobile draws less power (300W vs 450W).
Which should I choose?
Choose the RTX 5090 SE Mobile if you work with high-resolution textures or memory-bound workloads. Choose the RTX 4090 if you game at 1440p.
Methodology
Graphics cards are compared on 3DMark Time Spy scores, average gaming frame rates at 1080p/1440p/4K, FP32 compute throughput, VRAM capacity and type, memory bandwidth, board power (TDP) and launch MSRP — plus AI workload throughput (Stable Diffusion iterations/s and local LLM tokens/s) where measured. Vintage and server GPUs without modern benchmark results are compared on specifications only, clearly labelled. Frame rates are averages across a game suite at high settings; specific titles vary.