NVIDIA GeForce RTX 4090 vs NVIDIA RTX A4500, AI & Machine Learning Comparison
NVIDIA GeForce RTX 4090 wins 7 of 11 benchmarks, averaging 95.5% faster.
Both cards were measured first-party on our bench, same suite, same test rig.
What the numbers say
The gap is widest in Stable Diffusion XL, where NVIDIA GeForce RTX 4090 leads by 150% (16.28 vs 6.5 images/min); the closest fight is Llama 3.1 8B (71% apart); VRAM decides part of this one: NVIDIA GeForce RTX 4090 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 4090 | NVIDIA RTX A4500 | Difference |
|---|---|---|---|
| Qwen3 4B tok/s | 260.54 | 148.87 | +75% |
| Llama 3.1 8B tok/s | 171.29 | 100.2 | +71% |
| Qwen2.5-Coder 14B tok/s | 95.12 | 54.29 | +75% |
| Qwen3 32B tok/s | 44.28 | 0 | n/a |
| Llama 3.3 70B tok/s | 0 | 0 | n/a |
| Stable Diffusion XL images/min | 16.28 | 6.5 | +150% |
| FLUX.1 dev images/min | 0 | 0 | n/a |
| FLUX.1 Kontext dev images/min | 0 | 0 | n/a |
| Qwen-Image-Edit images/min | 0 | 0 | n/a |
| LTX-Video (distilled) frames/s | 4.7 | 2.39 | +97% |
| Wan 2.2 5B (720p) frames/s | 0.43 | 0.21 | +105% |
Whole-job comparison
How long each card takes to finish a complete pipeline, not just one model. NVIDIA GeForce RTX 4090 is faster on 1 of 1; NVIDIA RTX A4500 on 0.
| Workflow | NVIDIA GeForce RTX 4090 | NVIDIA RTX A4500 | Difference | Cost per run |
|---|---|---|---|---|
| Full codebase review | 10.5 min | 18.4 min | NVIDIA GeForce RTX 4090 1.75x faster | $0.027 vs $0.058 |
Renting by the hour, NVIDIA GeForce RTX 4090 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 4090 | $0.155 |
| NVIDIA RTX A4500 | $0.190 |
NVIDIA GeForce RTX 4090 is 1.23x cheaper per hour. Cheapest on-demand rate we see across RunPod and Vast.
Specifications compared
| NVIDIA GeForce RTX 4090 | NVIDIA RTX A4500 | |
|---|---|---|
| VRAM | 24GB | 20GB |
| Architecture | Ada Lovelace | Ampere (workstation variant) |
| Memory bandwidth | 1008 GB/s | 640 GB/s |
| Boost clock | 2,520 MHz | 1,575 MHz |
| TDP | 450 W | 200 W |
| Launch MSRP | $1,599 | $1,199 |
| Release | 2022-10-12 | 2021-11-23 |
FAQ
- Which is better for ai & machine learning: NVIDIA GeForce RTX 4090 or NVIDIA RTX A4500?
- NVIDIA GeForce RTX 4090 performs better for ai & machine learning, winning 7 of 11 benchmarks in our suite with an average 95.5% advantage.
- What are the main hardware differences between NVIDIA GeForce RTX 4090 and NVIDIA RTX A4500?
- NVIDIA GeForce RTX 4090 has 24GB VRAM and a 450W TDP, while NVIDIA RTX A4500 has 20GB VRAM and a 200W TDP.
- Does VRAM matter more than speed between NVIDIA GeForce RTX 4090 and NVIDIA RTX A4500?
- For AI, yes, NVIDIA GeForce RTX 4090 fits 1 more of our 12 workloads than NVIDIA RTX A4500. 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 4090 and NVIDIA RTX A4500?
- Stable Diffusion XL: NVIDIA GeForce RTX 4090 leads by roughly 150% (16.28 vs 6.5 images/min) in our testing.
NVIDIA GeForce RTX 4090 full review · NVIDIA RTX A4500 full review · All AI & Machine Learning rankings