RX M 6800 XT vs L40S
Head-to-head specifications
| Metric | RX M 6800 XT | L40S | Difference |
|---|---|---|---|
| 3DMark Time Spy | 7,400 | 32,060 | -76.9% |
| Avg FPS @ 1080p | 69 | 234 | -70.5% |
| Avg FPS @ 1440p | 42 | 148 | -71.6% |
| Avg FPS @ 4K | 23 | 84 | -72.6% |
| FP32 compute (TFLOPS) | 17.6 | 91.6 | -80.8% |
| VRAM | 16 GB GDDR6 | 48 GB GDDR6 | — |
| Memory bandwidth (GB/s) | 448 | 864 | -48.1% |
| TDP (W) | 195 | 350 | — |
| Stable Diffusion (it/s) | 2.6 | 36.6 | -92.9% |
| LLM inference (tokens/s) | 35 | 53 | -34.0% |
- L40S averages 148 fps at 1440p versus 42 fps — about 72% faster.
- RX M 6800 XT draws less power (195W vs 350W).
Verdict: RX M 6800 XT or L40S?
RX M 6800 XT advantages
- Power efficiency (+44%)
L40S advantages
- 1440p gaming (+72%)
- 4K gaming (+73%)
- Synthetic benchmark performance (+77%)
- Video memory (+67%)
- Memory bandwidth (+48%)
- AI image generation (+93%)
- Local LLM inference (+34%)
Which should you choose?
- Choose the RX M 6800 XT if you want lower power draw, heat and noise.
- Choose the L40S if you game at 1440p.
RX M 6800 XT vs L40S: which should you choose?
RX M 6800 XT — AMD desktop graphics card (2020, RDNA 2) with 16 GB of GDDR6, averaging 42 fps at 1440p.
L40S — NVIDIA desktop graphics card (2023, Ada Lovelace) with 48 GB of GDDR6, averaging 148 fps at 1440p.
RX M 6800 XT vs L40S: L40S is faster for gaming. L40S averages 148 fps at 1440p versus 42 fps — about 72% faster. RX M 6800 XT draws less power (195W vs 350W).
1080p, 1440p and 4K
At 1440p — the most common enthusiast resolution — the L40S averages 148 fps against 42. At 4K (23 vs 84 fps) VRAM (16GB vs 48GB) and memory bandwidth matter more.
AI and creator workloads
Beyond gaming, the L40S is quicker for AI image generation (36.6 vs 2.6 it/s in Stable Diffusion) and local LLM inference (53 vs 35 tokens/s), which increasingly matters for creators and developers.
Power and value
Board power is 195 W versus 350 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 6800 XT better than the L40S?
L40S is the clearly stronger overall choice, winning most of the dimensions that matter. L40S averages 148 fps at 1440p versus 42 fps — about 72% faster.
What is the main difference between the RX M 6800 XT and the L40S?
L40S averages 148 fps at 1440p versus 42 fps — about 72% faster. RX M 6800 XT draws less power (195W vs 350W).
Which should I choose?
Choose the RX M 6800 XT if you want lower power draw, heat and noise. Choose the L40S 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.