RX M 590 vs RX M 6600 XT
Head-to-head specifications
| Metric | RX M 590 | RX M 6600 XT | Difference |
|---|---|---|---|
| 3DMark Time Spy | 2,117 | 3,784 | -44.1% |
| Avg FPS @ 1080p | 34 | 45 | -24.4% |
| Avg FPS @ 1440p | 19 | 26 | -26.9% |
| Avg FPS @ 4K | 10 | 14 | -28.6% |
| FP32 compute (TFLOPS) | 6.1 | 9.0 | -32.9% |
| VRAM | 8 GB GDDR5 | 8 GB GDDR6 | — |
| Memory bandwidth (GB/s) | 224 | 224 | — |
| TDP (W) | 146 | 104 | — |
| Stable Diffusion (it/s) | 0.9 | 1.4 | -35.7% |
| LLM inference (tokens/s) | 11 | 11 | — |
- RX M 6600 XT averages 26 fps at 1440p versus 19 fps — about 27% faster.
- RX M 6600 XT draws less power (104W vs 146W).
Verdict: RX M 590 or RX M 6600 XT?
RX M 590 advantages
- No decisive advantage on the tracked metrics.
RX M 6600 XT advantages
- 1440p gaming (+27%)
- 4K gaming (+29%)
- Synthetic benchmark performance (+44%)
- AI image generation (+36%)
- Power efficiency (+29%)
Which should you choose?
- Choose the RX M 6600 XT if you game at 1440p.
RX M 590 vs RX M 6600 XT: which should you choose?
RX M 590 — AMD desktop graphics card (2018, Polaris) with 8 GB of GDDR5, averaging 19 fps at 1440p.
RX M 6600 XT — AMD desktop graphics card (2021, RDNA 2) with 8 GB of GDDR6, averaging 26 fps at 1440p.
RX M 590 vs RX M 6600 XT: RX M 6600 XT is faster for gaming. RX M 6600 XT averages 26 fps at 1440p versus 19 fps — about 27% faster. RX M 6600 XT draws less power (104W vs 146W).
1080p, 1440p and 4K
At 1440p — the most common enthusiast resolution — the RX M 6600 XT averages 26 fps against 19. At 4K (10 vs 14 fps) VRAM (8GB vs 8GB) and memory bandwidth matter more.
AI and creator workloads
Beyond gaming, the RX M 6600 XT is quicker for AI image generation (1.4 vs 0.9 it/s in Stable Diffusion) and local LLM inference (11 vs 11 tokens/s), which increasingly matters for creators and developers.
Power and value
Board power is 146 W versus 104 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 M 590 better than the RX M 6600 XT?
RX M 6600 XT is the clearly stronger overall choice, winning most of the dimensions that matter. RX M 6600 XT averages 26 fps at 1440p versus 19 fps — about 27% faster.
What is the main difference between the RX M 590 and the RX M 6600 XT?
RX M 6600 XT averages 26 fps at 1440p versus 19 fps — about 27% faster. RX M 6600 XT draws less power (104W vs 146W).
Which should I choose?
Choose the RX M 6600 XT 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.