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
Hetzner VIENNA1 North	Hetzner	Vienna, Austria	—	15	1.21
Digital Realty / Interxion VIENNA2 South	Digital Realty / Interxion	Vienna, Austria	—	20	1.28
Penta Infra VIENNA3 Park	Penta Infra	Vienna, Austria	—	2	1.36
Global Switch VIENNA4 Park	Global Switch	Vienna, Austria	—	18	1.26
Telefonica VIENNA5 West	Telefonica	Vienna, Austria	—	15	1.24
Green Mountain VIENNA6	Green Mountain	Vienna, Austria	B200	18	1.25
Bulk Infrastructure VIENNA7 South	Bulk Infrastructure	Vienna, Austria	—	16	1.23
OVHcloud VIENNA8 East	OVHcloud	Vienna, Austria	—	3	1.39
Telefonica VIENNA9 South	Telefonica	Vienna, Austria	—	8	1.51
Digital Realty / Interxion VIENNA10 Central	Digital Realty / Interxion	Vienna, Austria	—	9	1.49
Itconic VIENNA11 Campus	Itconic	Vienna, Austria	L40S	5	1.44
CyrusOne EU VIENNA12 South	CyrusOne EU	Vienna, Austria	—	23	1.35
Scaleway VIENNA13 Park	Scaleway	Vienna, Austria	A100	8	1.45
Itconic VIENNA14 Annex	Itconic	Vienna, Austria	—	5	1.42
atNorth VIENNA15 West	atNorth	Vienna, Austria	A100	4	1.43
Scaleway VIENNA16 Campus	Scaleway	Vienna, Austria	H100	20	1.30
CyrusOne EU VIENNA17 Campus	CyrusOne EU	Vienna, Austria	—	21	1.31
Vantage Data Centers VIENNA18 Campus	Vantage Data Centers	Vienna, Austria	—	20	1.33
Vantage Data Centers VIENNA19 East	Vantage Data Centers	Vienna, Austria	—	17	1.28
CyrusOne EU VIENNA20 Park	CyrusOne EU	Vienna, Austria	A100	6	1.42
Hetzner VIENNA21 West	Hetzner	Vienna, Austria	—	9	1.52
Global Switch VIENNA22 Central	Global Switch	Vienna, Austria	—	2	1.40
NTT VIENNA23 Central	NTT	Vienna, Austria	H100	4	1.39
Aruba VIENNA24 East	Aruba	Vienna, Austria	—	20	1.29
Equinix VIENNA25 Campus	Equinix	Vienna, Austria	L40S	15	1.23

AI Datacenters in

Company → Datacenter → GPU → Customer → Industry