Reserved GPU capacity

B300 GPU rental

Reserved HGX B300 capacity · Updated 19 October 2026
By , Co-Founder of Ancapex

As of 19 October 2026, reserved HGX B300 can start from Q4 2026. Through Ancapex, B300 on terms of two years or longer costs about $5.40 per GPU-hour at the median of offers from the last 30 days, with the middle half between about $4.90 and $6.10, our fee included.

Ancapex reserves B300 capacity for AI teams. We collect B300 offers from operators, bring them to a comparable basis and agree the price and terms with you. You sign directly with the operator.

Book a call → Send a request

B300 availability

Operators with current offers22
Can startFrom Q4 2026
RegionsUS, Europe, Asia-Pacific, Latin America and other regions
Typical term1 to 4 years

From the current B300 offers in our pipeline on 19 October 2026. Blocks range from a few 8-GPU servers to more than a thousand GPUs. A month or a quarter is the ready date an operator names for its site. All models.

What reserved B300 costs

Rates per GPU-hour through Ancapex, our fee included, based on priced B300 offers from operators received 19 September 2026 to 19 October 2026: 15 offers from 10 operators for two years or longer, and 4 for 12 months or shorter. Only operators' own offers in US dollars count, not resellers; where an offer gives several terms we count its 3-year rate, or its shortest term of two years or longer when there is no 3-year rate. Figures are rounded to $0.10 and we show no lowest or highest rate, so they cannot be traced to one operator's offer: our NDAs forbid publishing any one operator's price. Capacity that starts within 30 days of signing costs more. The final price depends on term, prepayment, volume and start date.

TermMedianMiddle half of offersOffers
2 years or longerAbout $5.40About $4.90 to $6.1015, from 10 operators
12 months or shorterToo few offers to show4

Longer terms are usually cheaper. Operators often ask for 25% to 30% of the contract value up front.

What is offered

B300 is NVIDIA's Blackwell Ultra data-center GPU. For rental it comes as HGX B300 servers with eight GPUs each, from a few nodes to large clusters, for training, inference and agentic workloads.

GPU
NVIDIA B300 (Blackwell Ultra), in HGX B300 servers with 8 GPUs
Memory
2.1 TB of HBM3e per 8-GPU server (NVIDIA specification)
NVLink
1.8 TB/s GPU-to-GPU, 14.4 TB/s per server
Network
Up to 1.6 TB/s per server; InfiniBand or RoCE Ethernet, depending on the operator
Terms
Reserved, from a few months to 5 years

What to compare before you sign

Two quotes at the same price per GPU-hour are rarely the same price. Before any match we bring every offer to the same eight lines:

How it works

  1. Send a request: GPU type, quantity, region, start date, term and workload.
  2. We qualify the request and match it with operators that have the capacity.
  3. You get offers on a comparable basis, and we agree the price and terms with you.
  4. You sign directly with the operator.

We share the operator, the site and the exact price once the NDA and the referral agreement with the operator are signed and we have had a call with you.

Send a request

Requirements are handled confidentially and shared with operators only on a need-to-know basis, never with your name attached before you approve it. We reply within one business day from dima@ancapex.io.

FAQ

How long does it take to get B300 capacity?

In current offers B300 can start from Q4 2026. A month or a quarter is the ready date an operator names for its site; it holds only if the contract and the deposit are in place in time.

What is the minimum term for reserved B300?

From a few months at some operators; 1 to 4 years is the most common term. Terms of 12 months or shorter usually cost more than the median of about $5.40 per GPU-hour for two years or longer.

How much prepayment do B300 operators ask for?

Often 25% to 30% of the contract value at signing in our offers.

What is the smallest B300 order?

A few 8-GPU servers at some operators. The most common block is 32 servers (256 GPUs), and large blocks go above 1,000 GPUs.

Should I rent B300 or GB300 NVL72?

HGX B300 comes as 8-GPU servers rented by the node. GB300 NVL72 is a liquid-cooled rack of 72 GPUs rented by the rack. In current offers B300 can start from Q4 2026; GB300 NVL72 racks from Q1 2027. See GB300 NVL72 rental.