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
CoreWeave Barcelona	CoreWeave	Barcelona, Spain	H100	28	1.22
Data4 BARCELONA1 South	Data4	Barcelona, Spain	—	15	1.25
Green Mountain BARCELONA2 West	Green Mountain	Barcelona, Spain	L40S	15	1.22
NTT BARCELONA3 Central	NTT	Barcelona, Spain	—	19	1.31
OVHcloud BARCELONA4 Park	OVHcloud	Barcelona, Spain	A100	14	1.54
Scaleway BARCELONA5 East	Scaleway	Barcelona, Spain	A100	15	1.22
Vantage Data Centers BARCELONA6 Annex	Vantage Data Centers	Barcelona, Spain	A100	11	1.51
Itconic BARCELONA7 East	Itconic	Barcelona, Spain	—	19	1.31
Telehouse BARCELONA8 West	Telehouse	Barcelona, Spain	—	15	1.21
Telehouse BARCELONA9 West	Telehouse	Barcelona, Spain	—	7	1.42
atNorth BARCELONA10 Park	atNorth	Barcelona, Spain	—	13	1.54
Bulk Infrastructure BARCELONA11	Bulk Infrastructure	Barcelona, Spain	—	14	1.21
Global Switch BARCELONA12 Campus	Global Switch	Barcelona, Spain	A100	20	1.28
Data4 BARCELONA13 Annex	Data4	Barcelona, Spain	—	8	1.46
Aruba BARCELONA14 East	Aruba	Barcelona, Spain	—	18	1.30
Bulk Infrastructure BARCELONA15 North	Bulk Infrastructure	Barcelona, Spain	B200	7	1.44
OVHcloud BARCELONA16 Annex	OVHcloud	Barcelona, Spain	—	10	1.53
Data4 BARCELONA17 West	Data4	Barcelona, Spain	—	19	1.27
Green Mountain BARCELONA18 South	Green Mountain	Barcelona, Spain	—	18	1.29
Bulk Infrastructure BARCELONA19 South	Bulk Infrastructure	Barcelona, Spain	—	14	1.55
OVHcloud BARCELONA20 Annex	OVHcloud	Barcelona, Spain	—	13	1.21
Telefonica BARCELONA21 Central	Telefonica	Barcelona, Spain	—	21	1.30
Global Switch BARCELONA22	Global Switch	Barcelona, Spain	—	20	1.32
Penta Infra BARCELONA23 Central	Penta Infra	Barcelona, Spain	—	9	1.47
Digital Realty / Interxion BARCELONA24 Annex	Digital Realty / Interxion	Barcelona, Spain	—	12	1.51
Telefonica BARCELONA25 South	Telefonica	Barcelona, Spain	MI300X	5	1.41

AI Datacenters in

Company → Datacenter → GPU → Customer → Industry