NVIDIA A40 vs NVIDIA Titan RTX, AI & Machine Learning Comparison
NVIDIA A40 wins 4 of 8 benchmarks, averaging 6.5% faster.
Both cards' numbers are anchored estimates calibrated against our measured cards, pending first-party measurement. Treat small gaps as ties.
What the numbers say
The gap is widest in Stable Diffusion XL, where NVIDIA A40 leads by 40% (9.2 vs 6.56 images/min); the closest fight is Llama 3.1 8B (1% apart); VRAM decides part of this one: NVIDIA A40 runs 8 of our 12 AI workloads while the other card runs 5, models that don't fit score zero.
Benchmark results head-to-head
| Benchmark | NVIDIA A40 | NVIDIA Titan RTX | Difference |
|---|---|---|---|
| Qwen3 4B tok/s | 160.79 | 158.13 | +2% |
| Llama 3.1 8B tok/s | 106.18 | 107.39 | -1% |
| Qwen2.5-Coder 14B tok/s | 57.85 | 59.75 | -3% |
| Qwen3 32B tok/s | 26.89 | 28.36 | -5% |
| Llama 3.3 70B tok/s | 0 | 0 | n/a |
| Stable Diffusion XL images/min | 9.2 | 6.56 | +40% |
| FLUX.1 dev images/min | 1.95 | 0 | n/a |
| Wan 2.2 5B (720p) frames/s | 0.31 | 0 | n/a |
Whole-job comparison
How long each card takes to finish a complete pipeline, not just one model. NVIDIA A40 is faster on 0 of 1; NVIDIA Titan RTX on 1.
| Workflow | NVIDIA A40 | NVIDIA Titan RTX | Difference |
|---|---|---|---|
| Full codebase review | 17.3 min | 16.7 min | NVIDIA Titan RTX 1.03x faster |
Specifications compared
| NVIDIA A40 | NVIDIA Titan RTX | |
|---|---|---|
| VRAM | 48GB | 24GB |
| Architecture | Ampere | Turing (TU102) |
| Memory bandwidth | 696 GB/s | 672 GB/s |
| Boost clock | 1,740 MHz | 1,770 MHz |
| TDP | 300 W | 280 W |
| Launch MSRP | $5,000 | $2,499 |
| Release | 2020-10-05 | 2018-12-18 |
FAQ
- Which is better for ai & machine learning: NVIDIA A40 or NVIDIA Titan RTX?
- NVIDIA A40 performs better for ai & machine learning, winning 4 of 8 benchmarks in our suite with an average 6.5% advantage.
- What are the main hardware differences between NVIDIA A40 and NVIDIA Titan RTX?
- NVIDIA A40 has 48GB VRAM and a 300W TDP, while NVIDIA Titan RTX has 24GB VRAM and a 280W TDP.
- Does VRAM matter more than speed between NVIDIA A40 and NVIDIA Titan RTX?
- For AI, yes, NVIDIA A40 fits 4 more of our 12 workloads than NVIDIA Titan RTX. A model that exceeds VRAM doesn't run slower, it doesn't run at all, so the card that fits the model wins that workload outright.
- Where is the biggest performance difference between NVIDIA A40 and NVIDIA Titan RTX?
- Stable Diffusion XL: NVIDIA A40 leads by roughly 40% (9.2 vs 6.56 images/min) in our testing.
NVIDIA A40 full review · NVIDIA Titan RTX full review · All AI & Machine Learning rankings