NVIDIA · Blackwell Ultra · Layer 2
NVIDIA GB300 NVL72
The same buyers as GB200, one generation on, where throughput per megawatt is the binding constraint.
rent Rentable by the hour from multiple clouds; purchasable at scale.
Specifications
- Memory
- Higher HBM3E capacity than GB200; per-rack figure not consistently published
- Bandwidth
- Not published per rack
- Compute
- Not published in comparable FP4 terms
- Power
- 135-200 kW per rack
- Interconnect
- NVLink 5
- Software
- CUDA
- Form factor
- rack
- Workload
- both
Verified 2026-09-09. Fields reading “not published” are exactly that — we do not estimate a figure a vendor withholds.
The catch
Pushes rack power to 135-200 kW. Very few facilities in the world can energise and cool that today, and the interconnection queue means new ones are a five-year decision.
The economics
NVIDIA claims up to 50x higher throughput per megawatt versus Hopper. Per-megawatt is the right frame in 2026 — see the Energy layer.
Cost per million tokens is the metric that decides most real purchases, and there is no neutral benchmark for it — every published figure comes from a company selling one side of the comparison. Read all of them, ours included, as claims rather than measurements.
The power question underneath this
A rack of frontier accelerators draws 120–200 kW against a 2026 average of about 27 kW, and the US grid interconnection queue exceeds 2,600 GW with waits approaching five years. Whether you can energise this part is now a harder question than whether you can buy it.
Layer 1 — Energy · The interconnection queue · Rack power density · Tokens per watt
Where you actually rent this
Choosing the part is the easy half. The same accelerator rents for wildly different money depending only on who you rent it from — the cheapest and dearest published on-demand price for an H100 sit 5.6× apart — and the provider, not the chip, is what decides whether you can leave later.
Compared against
- NVIDIA GB300 NVL72 vs NVIDIA GB200 NVL72 — One generation, and 15-80 kW more per rack. The question is whether your facility can energise it.Compare with NVIDIA GB200 NVL72
- NVIDIA Vera Rubin VR200 NVL144 vs NVIDIA GB300 NVL72 — One generation apart. The real question is not which is faster, it is whether you can get either.Compare with NVIDIA Vera Rubin VR200 NVL144
Related silicon
- NVIDIA B200 — 192 GB HBM3E, rent
- NVIDIA GB200 NVL72 — 13.5 TB HBM3E across the rack, rent
- NVIDIA H100 — 80 GB HBM3, rent
- NVIDIA H200 — 141 GB HBM3E, rent
- NVIDIA Vera Rubin VR200 NVL144 — HBM4. NVIDIA quotes 20.7 TB per rack at NVL72 scale; the NVL144 CPX configuration is quoted at 100 TB of fast memory per rack., rent
- NVIDIA RTX PRO 6000 Blackwell — 96 GB GDDR7, buy
Sources
Want this whole layer as one table?
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