Question 1

What is an AI datacenter?

Accepted Answer

An AI datacenter is a facility purpose-built or retrofitted for GPU and accelerator workloads — typically at rack densities above 30 kW, with liquid-cooling readiness and high-bandwidth fabric (InfiniBand NDR, NVLink, or Spectrum-X). At least 40% of IT load runs AI training or inference on GPUs such as NVIDIA H100, H200, B200, or GB200 NVL72.

Question 2

Which datacenter has the most GPUs?

Accepted Answer

As of 2026, xAI Colossus in Memphis, Tennessee holds the title of the world's largest single-site GPU deployment, with more than 200,000 NVIDIA H100 and H200 GPUs in one InfiniBand domain. Meta Hyperion (Louisiana) and OpenAI Stargate Abilene (Texas) are scaling toward gigawatt-class deployments that will overtake it within the next 18 months.

Question 3

What is the largest AI cluster?

Accepted Answer

xAI Colossus is the largest contiguous AI training cluster in 2026, exceeding 200,000 NVIDIA H100/H200 GPUs on a single InfiniBand NDR 400G fabric. Meta's Hyperion build and OpenAI's Stargate program are constructing multi-site fabrics that will exceed one million accelerators across coupled campuses by 2027.

Question 4

Which GPU cloud is cheapest for H100?

Accepted Answer

On-demand: Together AI ($1.75/hr) and Voltage Park ($1.89/hr) lead. Reserved 1-year: Voltage Park ($1.20/hr) and Crusoe ($1.39/hr) are typically lowest. AWS p5 sits at the top of the price stack at ~$4.10/hr on-demand.

Question 5

How is Datacenter.computer different from a datacenter directory?

Accepted Answer

Datacenter.computer is an agent-readable intelligence layer, not a directory. It normalizes pricing, capacity, power, fabric, and latency across 240+ facilities and 40+ operators into a single queryable graph for AI agents, traders, and procurement teams.

Facility	Operator	Location	GPU	MW	PUE
Nebius Mäntsälä	Nebius	Mäntsälä, Finland	H100/H200	60	1.13
GCP europe-north1	Google Cloud	Hamina, Finland	TPU v5p	200	1.08
Fluidstack Helsinki	Fluidstack	Helsinki, Finland	H100	40	1.10
LUMI	EuroHPC	Kajaani, Finland	MI250X	8	1.08
Hetzner HEL1	Hetzner	Helsinki, Finland	A100	30	1.10
Telefonica HELSINKI1 Annex	Telefonica	Helsinki, Finland	—	2	1.37
STACK EMEA HELSINKI2 Annex	STACK EMEA	Helsinki, Finland	—	16	1.25
NTT HELSINKI3 Campus	NTT	Helsinki, Finland	—	19	1.30
Aruba HELSINKI4 Park	Aruba	Helsinki, Finland	—	2	1.34
Hetzner HELSINKI5 East	Hetzner	Helsinki, Finland	—	2	1.41
OVHcloud HELSINKI6 Central	OVHcloud	Helsinki, Finland	—	16	1.25
Bulk Infrastructure HELSINKI7 Annex	Bulk Infrastructure	Helsinki, Finland	MI300X	8	1.53
Green Mountain HELSINKI8	Green Mountain	Helsinki, Finland	—	22	1.35
Telefonica HELSINKI9	Telefonica	Helsinki, Finland	MI300X	10	1.50
Global Switch HELSINKI10 Campus	Global Switch	Helsinki, Finland	—	14	1.22
atNorth HELSINKI11 East	atNorth	Helsinki, Finland	—	3	1.36
Itconic HELSINKI12 West	Itconic	Helsinki, Finland	—	18	1.29
CyrusOne EU HELSINKI13 Annex	CyrusOne EU	Helsinki, Finland	H200	16	1.27
CyrusOne EU HELSINKI14 South	CyrusOne EU	Helsinki, Finland	L40S	6	1.43
atNorth HELSINKI15 Central	atNorth	Helsinki, Finland	—	8	1.43
Vantage Data Centers HELSINKI16 Campus	Vantage Data Centers	Helsinki, Finland	—	8	1.49
CyrusOne EU HELSINKI17 East	CyrusOne EU	Helsinki, Finland	—	15	1.26
Scaleway HELSINKI18 Annex	Scaleway	Helsinki, Finland	H100	13	1.54
Vantage Data Centers HELSINKI19	Vantage Data Centers	Helsinki, Finland	—	19	1.30
atNorth HELSINKI20 Park	atNorth	Helsinki, Finland	—	13	1.23
atNorth HELSINKI21 Annex	atNorth	Helsinki, Finland	—	16	1.27

AI Datacenters in

Company → Datacenter → GPU → Customer → Industry