NVIDIA GeForce RTX 4080 vs NVIDIA A40, AI & Machine Learning Comparison
Dead heat, NVIDIA GeForce RTX 4080 and NVIDIA A40 split our benchmark suite evenly.
NVIDIA A40's 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 Z-Image Turbo, where NVIDIA A40 leads by 26% (2.55 vs 3.225 images/min); the closest fight is Stable Diffusion XL (10% apart); VRAM decides part of this one: NVIDIA A40 runs 8 of our 12 AI workloads while the other card runs 6, models that don't fit score zero.
Benchmark results head-to-head
| Benchmark | NVIDIA GeForce RTX 4080 | NVIDIA A40 | Difference |
|---|---|---|---|
| Qwen3 4B tok/s | 201.76 | 160.79 | +25% |
| Llama 3.1 8B tok/s | 127.09 | 106.18 | +20% |
| Qwen2.5-Coder 14B tok/s | 69.93 | 57.85 | +21% |
| Qwen3 32B tok/s | 0 | 26.89 | n/a |
| Llama 3.3 70B tok/s | 0 | 0 | n/a |
| Stable Diffusion XL images/min | 10.16 | 9.2 | +10% |
| Z-Image Turbo images/min | 2.55 | 3.225 | -21% |
| FLUX.1 dev images/min | 0 | 1.95 | n/a |
| Wan 2.2 5B (720p) frames/s | 0 | 0.31 | n/a |
Whole-job comparison
How long each card takes to finish a complete pipeline, not just one model. NVIDIA GeForce RTX 4080 is faster on 1 of 1; NVIDIA A40 on 0.
| Workflow | NVIDIA GeForce RTX 4080 | NVIDIA A40 | Difference | Cost per run |
|---|---|---|---|---|
| Full codebase review | 14.3 min | 17.3 min | NVIDIA GeForce RTX 4080 1.21x faster | $0.026 vs $0.101 |
Renting by the hour, NVIDIA GeForce RTX 4080 finishes 1 of 1 cheaper. The quicker card is not automatically the cheaper way to get the work done.
Cost to rent
| Card | Per hour |
|---|---|
| NVIDIA GeForce RTX 4080 | $0.108 |
| NVIDIA A40 | $0.350 |
NVIDIA GeForce RTX 4080 is 3.24x cheaper per hour. Cheapest on-demand rate we see across RunPod and Vast.
Specifications compared
| NVIDIA GeForce RTX 4080 | NVIDIA A40 | |
|---|---|---|
| VRAM | 16GB | 48GB |
| Architecture | Ada Lovelace (AD103) | Ampere |
| Memory bandwidth | 716.8 GB/s | 696 GB/s |
| Boost clock | 2,505 MHz | 1,740 MHz |
| TDP | 320 W | 300 W |
| Launch MSRP | $1,199 | $5,000 |
| Release | 2022-11-16 | 2020-10-05 |
FAQ
- What are the main hardware differences between NVIDIA GeForce RTX 4080 and NVIDIA A40?
- NVIDIA GeForce RTX 4080 has 16GB VRAM and a 320W TDP, while NVIDIA A40 has 48GB VRAM and a 300W TDP.
- Does VRAM matter more than speed between NVIDIA GeForce RTX 4080 and NVIDIA A40?
- For AI, yes, NVIDIA A40 fits 6 more of our 12 workloads than NVIDIA GeForce RTX 4080. 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 GeForce RTX 4080 and NVIDIA A40?
- Z-Image Turbo: NVIDIA A40 leads by roughly 26% (2.55 vs 3.225 images/min) in our testing.
NVIDIA GeForce RTX 4080 full review · NVIDIA A40 full review · All AI & Machine Learning rankings