Buyer guide
NVIDIA B300 and GB300 in Australia: what they are, what they cost and who is buying
By Nicholas Dodemaide, Director · Updated · 5 min read
B300 is NVIDIA's Blackwell Ultra GPU with 288 GB of HBM3e. HGX B300 puts eight of them in one server, listed by Supermicro from US$536,771 in September 2026. GB300 NVL72 joins 72 of them with 36 Grace CPUs in one liquid-cooled rack. Australian searches for 'b300' and 'gb300' each reached about 1,300 a month in October 2026, roughly ten times a year earlier.
B300, HGX B300 and GB300 NVL72: the difference
B300 is the chip. HGX B300 is an 8-GPU server built around it that fits a standard data-centre rack. GB300 NVL72 is a complete rack-scale system in which 72 B300 GPUs and 36 Grace CPUs share one NVLink domain and must be liquid-cooled.
| HGX B300 server | GB300 NVL72 rack | |
|---|---|---|
| GPUs | 8 x B300 | 72 x B300 |
| Memory per GPU | 288 GB HBM3e | 288 GB HBM3e |
| Host CPUs | x86 (Intel Xeon or AMD EPYC) | 36 x NVIDIA Grace |
| GPUs in one NVLink domain | 8 | 72 |
| Cooling | Air or liquid | Liquid |
| Indicative price | from US$536,771 (Supermicro, Sep 2026) | quoted per project |
Who is deploying them in Australia
- Sharon AI signed with NVIDIA for up to 40,000 GB300 GPUs and launched a 1,024-GPU Blackwell Ultra AI factory with Cisco.
- NVIDIA named eight Australian operators, including Firmus, IREN, NEXTDC, AirTrunk and ResetData, in a buildout of up to 2 gigawatts by 2027.
What it takes to run one
An HGX B300 server can run in an air-cooled colocation rack with enough power. A GB300 NVL72 rack draws well over 100 kW and needs liquid cooling approved by the data centre, so site selection comes before the order.
Methodology: how we track this market
Prices come from OEM list prices published by Supermicro and reported by the sources below. Search volumes are Google Ads estimates for Australia retrieved on 15 November 2026. Parkways Compute is building its own GB300 capacity in Brisbane, so these are the numbers we buy against.
Common questions
- What is the difference between B200 and B300?
- B300 (Blackwell Ultra) carries 288 GB of HBM3e per GPU against 192 GB on B200, for larger models and longer contexts.
- Can you buy GB300 in Australia?
- Yes, through OEM and NVIDIA partner channels with lead times set by allocation. You also need a data centre that can host liquid-cooled racks.