NVIDIA RTX PRO 4000 Blackwell vs NVIDIA T4, AI & Machine Learning Comparison
NVIDIA RTX PRO 4000 Blackwell wins 6 of 10 benchmarks, averaging 213.9% 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 RTX PRO 4000 Blackwell leads by 263% (8.56 vs 2.36 images/min); the closest fight is Qwen3 4B (165% apart); VRAM decides part of this one: NVIDIA RTX PRO 4000 Blackwell runs 111 of our 12 AI workloads while the other card runs 8, models that don't fit score zero.
Benchmark results head-to-head
| Benchmark | NVIDIA RTX PRO 4000 Blackwell | NVIDIA T4 | Difference |
|---|---|---|---|
| Qwen3 4B tok/s | 179.58 | 67.71 | +165% |
| Llama 3.1 8B tok/s | 112.36 | 35.01 | +221% |
| Qwen2.5-Coder 14B tok/s | 60.62 | 19.76 | +207% |
| Qwen3 32B tok/s | 27.8 | 0 | n/a |
| Llama 3.3 70B tok/s | 0 | 0 | n/a |
| Stable Diffusion XL images/min | 8.56 | 2.36 | +263% |
| 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 |
| Wan 2.2 5B (720p) frames/s | 0.26 | 0 | n/a |
Whole-job comparison
How long each card takes to finish a complete pipeline, not just one model. NVIDIA RTX PRO 4000 Blackwell is faster on 1 of 1; NVIDIA T4 on 0.
| Workflow | NVIDIA RTX PRO 4000 Blackwell | NVIDIA T4 | Difference |
|---|---|---|---|
| Full codebase review | 16.5 min | 50.7 min | NVIDIA RTX PRO 4000 Blackwell 3.07x faster |
Specifications compared
| NVIDIA RTX PRO 4000 Blackwell | NVIDIA T4 | |
|---|---|---|
| VRAM | 24GB | 16GB |
| Architecture | Blackwell | Turing |
| Memory bandwidth | 672 GB/s | 320 GB/s |
| Boost clock | 2,617 MHz | 1,590 MHz |
| TDP | 140 W | 70 W |
| Launch MSRP | $1,500 | $2,299 |
| Release | 2025-08-01 | 2018-09-13 |
FAQ
- Which is better for ai & machine learning: NVIDIA RTX PRO 4000 Blackwell or NVIDIA T4?
- NVIDIA RTX PRO 4000 Blackwell performs better for ai & machine learning, winning 6 of 10 benchmarks in our suite with an average 213.9% advantage.
- What are the main hardware differences between NVIDIA RTX PRO 4000 Blackwell and NVIDIA T4?
- NVIDIA RTX PRO 4000 Blackwell has 24GB VRAM and a 140W TDP, while NVIDIA T4 has 16GB VRAM and a 70W TDP.
- Does VRAM matter more than speed between NVIDIA RTX PRO 4000 Blackwell and NVIDIA T4?
- For AI, yes, NVIDIA RTX PRO 4000 Blackwell fits 40 more of our 12 workloads than NVIDIA T4. 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 RTX PRO 4000 Blackwell and NVIDIA T4?
- Stable Diffusion XL: NVIDIA RTX PRO 4000 Blackwell leads by roughly 263% (8.56 vs 2.36 images/min) in our testing.
NVIDIA RTX PRO 4000 Blackwell full review · NVIDIA T4 full review · All AI & Machine Learning rankings