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
Fluidstack Helsinki	Fluidstack	Helsinki, Finland	H100	40	1.10
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