RX 6600 XT vs GTX 1660 Mobile
Head-to-head specifications
| Metric | RX 6600 XT | GTX 1660 Mobile | Difference |
|---|---|---|---|
| 3DMark Time Spy | 4,452 | 1,494 | +198.0% |
| Avg FPS @ 1080p | 49 | 29 | +69.0% |
| Avg FPS @ 1440p | 29 | 16 | +81.3% |
| Avg FPS @ 4K | 16 | 8 | +100.0% |
| FP32 compute (TFLOPS) | 10.6 | 4.3 | +148.2% |
| VRAM | 8 GB GDDR6 | 6 GB GDDR5 | — |
| Memory bandwidth (GB/s) | 224 | 168 | +33.3% |
| TDP (W) | 160 | 72 | — |
- RX 6600 XT averages 29 fps at 1440p versus 16 fps — about 81% faster.
- GTX 1660 Mobile draws less power (72W vs 160W).
Verdict: RX 6600 XT or GTX 1660 Mobile?
RX 6600 XT advantages
- 1440p gaming (+45%)
- 4K gaming (+50%)
- Synthetic benchmark performance (+66%)
- Video memory (+25%)
- Memory bandwidth (+25%)
GTX 1660 Mobile advantages
- Power efficiency (+55%)
Which should you choose?
- Choose the RX 6600 XT if you game at 1440p.
- Choose the GTX 1660 Mobile if you want lower power draw, heat and noise.
- Choose the RX 6600 XT if you game at 4K or drive a high-resolution display.
RX 6600 XT vs GTX 1660 Mobile: which should you choose?
RX 6600 XT — AMD desktop graphics card (2021, RDNA 2) with 8 GB of GDDR6, averaging 29 fps at 1440p; launched at $379.
GTX 1660 Mobile — NVIDIA laptop graphics card (2019, Turing) with 6 GB of GDDR5, averaging 16 fps at 1440p.
RX 6600 XT vs GTX 1660 Mobile: RX 6600 XT is faster for gaming. RX 6600 XT averages 29 fps at 1440p versus 16 fps — about 81% faster. GTX 1660 Mobile draws less power (72W vs 160W).
1080p, 1440p and 4K
At 1440p — the most common enthusiast resolution — the RX 6600 XT averages 29 fps against 16. At 4K (16 vs 8 fps) VRAM (8GB vs 6GB) and memory bandwidth matter more.
Power and value
Board power is 160 W versus 72 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 6600 XT better than the GTX 1660 Mobile?
RX 6600 XT is the clearly stronger overall choice, winning most of the dimensions that matter. RX 6600 XT averages 29 fps at 1440p versus 16 fps — about 81% faster.
What is the main difference between the RX 6600 XT and the GTX 1660 Mobile?
RX 6600 XT averages 29 fps at 1440p versus 16 fps — about 81% faster. GTX 1660 Mobile draws less power (72W vs 160W).
Which should I choose?
Choose the RX 6600 XT if you game at 1440p. Choose the GTX 1660 Mobile if you want lower power draw, heat and noise.
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.