RX Vega 56 vs RTX 5090 Mobile
Head-to-head specifications
| Metric | RX Vega 56 | RTX 5090 Mobile | Difference |
|---|---|---|---|
| 3DMark Time Spy | 3,688 | 35,600 | -89.6% |
| Avg FPS @ 1080p | 44 | 257 | -82.9% |
| Avg FPS @ 1440p | 26 | 164 | -84.1% |
| Avg FPS @ 4K | 14 | 94 | -85.1% |
| FP32 compute (TFLOPS) | 10.5 | 89.0 | -88.2% |
| VRAM | 8 GB HBM2 | 16 GB GDDR7 | — |
| Memory bandwidth (GB/s) | 410 | 1,792 | -77.1% |
| TDP (W) | 210 | 345 | — |
- RTX 5090 Mobile averages 164 fps at 1440p versus 26 fps — about 84% faster.
- RX Vega 56 draws less power (210W vs 345W).
Verdict: RX Vega 56 or RTX 5090 Mobile?
RX Vega 56 advantages
- Power efficiency (+39%)
RTX 5090 Mobile advantages
- 1440p gaming (+84%)
- 4K gaming (+85%)
- Synthetic benchmark performance (+90%)
- Video memory (+50%)
- Memory bandwidth (+77%)
Which should you choose?
- Choose the RX Vega 56 if you want lower power draw, heat and noise.
- Choose the RTX 5090 Mobile if you game at 1440p.
RX Vega 56 vs RTX 5090 Mobile: which should you choose?
RX Vega 56 — AMD desktop graphics card (2017, Vega) with 8 GB of HBM2, averaging 26 fps at 1440p; launched at $399.
RTX 5090 Mobile — NVIDIA laptop graphics card (2025, Blackwell) with 16 GB of GDDR7, averaging 164 fps at 1440p.
RX Vega 56 vs RTX 5090 Mobile: RTX 5090 Mobile is faster for gaming. RTX 5090 Mobile averages 164 fps at 1440p versus 26 fps — about 84% faster. RX Vega 56 draws less power (210W vs 345W).
1080p, 1440p and 4K
At 1440p — the most common enthusiast resolution — the RTX 5090 Mobile averages 164 fps against 26. At 4K (14 vs 94 fps) VRAM (8GB vs 16GB) and memory bandwidth matter more.
Power and value
Board power is 210 W versus 345 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 RX Vega 56 better than the RTX 5090 Mobile?
RTX 5090 Mobile is the clearly stronger overall choice, winning most of the dimensions that matter. RTX 5090 Mobile averages 164 fps at 1440p versus 26 fps — about 84% faster.
What is the main difference between the RX Vega 56 and the RTX 5090 Mobile?
RTX 5090 Mobile averages 164 fps at 1440p versus 26 fps — about 84% faster. RX Vega 56 draws less power (210W vs 345W).
Which should I choose?
Choose the RX Vega 56 if you want lower power draw, heat and noise. Choose the RTX 5090 Mobile 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.