The neocloud that can actually deliver your B300 cluster.

Compare GPU clouds on what matters for a large buy: GB300 NVL72 racks, HGX B300 nodes, connected cluster size and start date. Then get competing quotes with one request.

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Every claim has a source and a date.

We link each provider's own announcement or product page and say when we checked it.

Capacity, not marketing.

We separate "sells B300" from "can deliver 128 connected nodes in your region next month."

You contract with the provider.

We introduce you to the providers that fit. You sign with and pay them directly.

Pick the system first.

HGX B300, DGX B300 and GB300 NVL72 aren't interchangeable. Start with the platform, then compare who can deliver it.

GB300 NVL72

GPUs per rack: 72
CPUs: 36 Grace
Listed providers: 2

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HGX B300

GPUs per node: 8
128 nodes: 1,024 GPUs
Listed providers: 5

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B200

GPUs per node: 8
Generation: Blackwell
Listed providers: Soon

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H200 / H100

GPUs per node: 8
Generation: Hopper
Listed providers: Soon

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Who has Blackwell Ultra capacity.

Rows are ordered by evidence, not performance. A public offer doesn't confirm capacity in your region, at your size or by your start date.

Provider	Platforms	Status	Source
CoreWeaveAI cloud, reserved clusters	HGX B300	Generally available GA announced 16 Mar 2026. Ask which fabric the allocation uses and whether every node delivers together.	coreweave.com 22 Oct 2026
NebiusAI cloud, self-service and reserved	HGX B300	In production Self-service instances plus a sales route for large reservations. Ask for a named region and one connected allocation.	nebius.com 22 Oct 2026
LambdaSuperclusters, 1-Click Clusters, instances	GB300 NVL72HGX B300	Listed on site Single-tenant GB300 NVL72 superclusters on InfiniBand. Ask about minimum cluster size and lead time.	lambda.ai 8 Nov 2026
CrusoeAI cloud and modular data centers	GB300 NVL72HGX B300	Through sales Both platforms sold through the sales team. Ask which campus the capacity sits in and the start date.	crusoe.ai 8 Nov 2026
TD SYNNEXReseller channel to Nebius	HGX B300	Channel route Dedicated B300 clusters on Nebius AI Cloud, announced 16 Apr 2026. Same capacity as Nebius, so not a separate fallback.	tdsynnex.com 22 Oct 2026
Together AIGPU clusters and inference	TBC	Researching No public B300 or GB300 source confirmed yet.	—
Voltage ParkBare-metal GPU cloud	TBC	Researching No public B300 or GB300 source confirmed yet.	—
FluidstackDedicated large clusters	TBC	Researching No public B300 or GB300 source confirmed yet.	—

Want the long view? See every neocloud company we track or B300 and GB300 providers in detail.

Neocloud guides.

Plain answers to what buyers search for before they sign a GPU contract.

What is a neocloud?The meaning, examples, and how they make money.Explainer Neocloud companiesA list of the GPU clouds worth knowing in 2026.List CoreWeave vs NebiusThe two Platinum-rated neoclouds, side by side.Comparison CoreWeave alternativesWho else can deliver a large cluster, and when to look.Comparison GPU cloud providersNeoclouds, hyperscalers and marketplaces by use case.Guide ClusterMAX ratingsWhat the SemiAnalysis tiers mean for a buyer.Explainer

Ask every provider the same six things.

Mark each answer confirmed, open or not a fit. A low hourly rate can hide an allocation nobody has confirmed.

Which exact system is it?

HGX B300, DGX B300 and GB300 NVL72 are different systems. Confirm the CPU, the GPU memory you'll actually see, and whether the hardware is dedicated to you.

Is it one connected cluster?

A fleet-wide GPU count isn't a cluster. Ask whether every node can run one job together, in one facility.

What fabric and storage?

Get the fabric type, topology and oversubscription, plus checkpoint speed tested at your contracted scale, not on one node.

Is it running today?

Running, being installed, or planned? Get the date it was checked, the start date, and when the quote expires.

Who's accountable when it breaks?

Know who contracts with you, bills you and fixes failures. Reseller routes can hide the real operator.

What does the whole term cost?

Compare total spend over the term, including fabric, storage, transfer, support and when prepayment is due.

Neocloud questions.

What is a neocloud?

A neocloud is a cloud provider built around renting GPUs for AI, rather than offering a broad catalog of general cloud services. Neoclouds usually sell dedicated bare-metal GPU nodes and large connected clusters on reserved terms, alongside on-demand instances. CoreWeave, Nebius, Lambda and Crusoe are well-known examples. Read the full explainer.

Which neoclouds offer B300 or GB300 NVL72?

As of 8 November 2026, CoreWeave and Nebius publicly offer HGX B300, Lambda and Crusoe list both GB300 NVL72 and HGX B300, and TD SYNNEX resells dedicated B300 clusters on Nebius. A public offer doesn't confirm capacity at your scale, region or start date, so ask each provider for a specific quote.

Neocloud or hyperscaler?

Neoclouds tend to offer dedicated GPU clusters with shorter lead times and simpler contracts. Hyperscalers bundle GPUs with broader services and existing enterprise agreements. What usually decides it is who can deliver a connected cluster of your size, in your region, by your start date. Compare them.

Why no prices?

B300 and GB300 rates move fast and depend on term, scale, region, fabric and prepayment. A posted rate is rarely what a large buyer pays, so we point you to competing quotes instead.

Who runs this site?

RackShore, a GPU broker. We introduce buyers to providers that fit, and you contract with and pay the provider directly. RackShore may be paid a referral fee by a provider. That doesn't affect which providers are listed or their order. More on how this works.

Stop emailing ten sales teams.

Send one brief with your platform, cluster size, region and start date. We come back within 24 hours with the providers that can deliver it.

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