NVIDIA B300 vs NVIDIA RTX A4000 — GPU Comparison (Jul 2026)
NVIDIA B300 (288GB HBM3e, 2,250 TFLOPS FP16, Blackwell Ultra) vs NVIDIA RTX A4000 (16GB GDDR6, 19.2 TFLOPS FP16, Ampere)
Bottom Line: NVIDIA B300 vs NVIDIA RTX A4000
NVIDIA B300 comes out ahead overall, leading in 5 of 6 compared categories.
Where NVIDIA B300 leads
- FP16 (2,250 TFLOPS vs 19.2 TFLOPS)
- VRAM (288 GB vs 16 GB)
- Memory Bandwidth (8,000 GB/s vs 448 GB/s)
- FP32 (75 TFLOPS vs 16 TFLOPS)
- Release Year (2025 vs 2021)
Where NVIDIA RTX A4000 leads
- TDP (140W vs 1400W)
Choose NVIDIA B300 for Frontier AI training, largest model workloads. Choose NVIDIA RTX A4000 for Entry workstation, rendering.
Frequently Asked Questions
Is NVIDIA B300 or NVIDIA RTX A4000 better?
NVIDIA B300 leads in 5 of 6 compared categories. The right choice still depends on the factors that matter most to you.
Which has a better FP16, NVIDIA B300 or NVIDIA RTX A4000?
NVIDIA B300 (2,250 TFLOPS vs 19.2 TFLOPS).
Which has a better VRAM, NVIDIA B300 or NVIDIA RTX A4000?
NVIDIA B300 (288 GB vs 16 GB).
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NVIDIA B300
288GB HBM3e · Blackwell Ultra
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NVIDIA RTX A4000
16GB GDDR6 · Ampere
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|---|---|---|---|
| Specifications | |||
| Manufacturer | NVIDIA | NVIDIA | |
| Architecture | Blackwell Ultra | Ampere | |
| VRAM | 288 GB HBM3e | 16 GB GDDR6 | |
| Memory Bandwidth | 8,000 GB/s | 448 GB/s | |
| FP16 (Tensor) | 2250.0 TFLOPS | 19.2 TFLOPS | |
| FP32 | 75.0 TFLOPS | 16.0 TFLOPS | |
| TDP | 1400W | 140W | |
| Release Year | 2025 | 2021 | |
| Segment | Data center | Professional | |
| Best For | Frontier AI training largest model workloads | Entry workstation rendering | |
| Cloud Pricing | |||
| Cheapest On-Demand | — | — | |
| Cheapest Spot | — | — | |
| Providers | 1 | 0 | |
NVIDIA B300
NVIDIA RTX A4000