What is an AI datacenter?

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.

Which datacenter has the most GPUs?

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.

What is the largest AI cluster?

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.

Which GPU cloud is cheapest for H100?

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.

How is Datacenter.computer different from a datacenter directory?

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.

[DC.COMPUTER] Layer 5 · Colocation

Data4

Every indexed Data4 datacenter — facility-level capacity, GPU fleet, and country coverage.

Datacenter Portfolio

[AI Summary]

Data4 runs 46 indexed datacenters across 12 countries, totaling 752 MW of IT capacity. The portfolio spans colocation tiers and deploys B200, A100, MI300X, H100.

Facilities

752 MW

Total IT

Countries

GPU SKUs

[Facilities · 46]

Facility	Operator	Location	GPU	MW	PUE
Data4 LONDON6 South	Data4	London, United Kingdom	B200	15	1.45
Data4 LONDON13 South	Data4	London, United Kingdom	A100	11	1.45
Data4 LONDON17 Park	Data4	London, United Kingdom	—	39	1.31
Data4 LONDON36 Campus	Data4	London, United Kingdom	B200	23	1.50
Data4 LONDON41 Park	Data4	London, United Kingdom	—	12	1.44
Data4 LONDON43 West	Data4	London, United Kingdom	A100	30	1.24
Data4 LONDON45 Campus	Data4	London, United Kingdom	—	40	1.45
Data4 LONDON47 Park	Data4	London, United Kingdom	—	21	1.52
Data4 LONDON102 East	Data4	London, United Kingdom	—	30	1.25
Data4 LONDON106 Central	Data4	London, United Kingdom	—	9	1.43
Data4 SLOUGH19 Campus	Data4	Slough, United Kingdom	—	12	1.54
Data4 MANCHESTER9	Data4	Manchester, United Kingdom	B200	17	1.30
Data4 FRANKFURT23	Data4	Frankfurt, Germany	—	34	1.33
Data4 AMSTERDAM6 East	Data4	Amsterdam, Netherlands	A100	8	1.41
Data4 AMSTERDAM86 Central	Data4	Amsterdam, Netherlands	—	36	1.33
Data4 AMSTERDAM90 South	Data4	Amsterdam, Netherlands	MI300X	5	1.41
Data4 PARIS6 North	Data4	Paris, France	—	39	1.37
Data4 PARIS11 Annex	Data4	Paris, France	—	21	1.21
Data4 PARIS19 Park	Data4	Paris, France	—	17	1.50
Data4 PARIS34 West	Data4	Paris, France	—	18	1.54
Data4 PARIS40 West	Data4	Paris, France	—	24	1.21
Data4 PARIS41 West	Data4	Paris, France	—	22	1.54
Data4 PARIS49	Data4	Paris, France	—	13	1.46
Data4 PARIS52 North	Data4	Paris, France	—	37	1.35
Data4 MARSEILLE4 Campus	Data4	Marseille, France	—	10	1.52
Data4 MARSEILLE18 Annex	Data4	Marseille, France	—	16	1.28
Data4 BARCELONA1 South	Data4	Barcelona, Spain	—	15	1.25
Data4 BARCELONA13 Annex	Data4	Barcelona, Spain	—	8	1.46
Data4 BARCELONA17 West	Data4	Barcelona, Spain	—	19	1.27
Data4 MILAN32 East	Data4	Milan, Italy	—	2	1.33
Data4 MILAN34 Campus	Data4	Milan, Italy	—	16	1.22
Data4 ROME6 North	Data4	Rome, Italy	—	3	1.43
Data4 ROME8 East	Data4	Rome, Italy	H100	15	1.25
Data4 ROME10 East	Data4	Rome, Italy	H100	8	1.50
Data4 GENEVA6 South	Data4	Geneva, Switzerland	B200	7	1.48
Data4 OSLO9	Data4	Oslo, Norway	—	15	1.25
Data4 BUCHAREST2 Annex	Data4	Bucharest, Romania	—	7	1.48
Data4 ATHENS6 West	Data4	Athens, Greece	—	4	1.42
Data4 ATHENS10 Central	Data4	Athens, Greece	MI300X	15	1.30
Data4 BERLIN29 North	Data4	Berlin, Germany	—	11	1.52
Data4 MUNICH2 South	Data4	Munich, Germany	H100	5	1.44
Data4 MUNICH23 East	Data4	Munich, Germany	—	7	1.47
Data4 MUNICH25 Park	Data4	Munich, Germany	—	14	1.54
Data4 ZAGREB3 South	Data4	Zagreb, Croatia	MI300X	2	1.37
Data4 REYKJAVIK2 Annex	Data4	Reykjavik, Iceland	—	14	1.29
Data4 REYKJAVIK6 West	Data4	Reykjavik, Iceland	—	6	1.49

[FAQ]

How many datacenters does Data4 operate?

46 indexed facilities totaling 752 MW across 12 countries.

Which GPUs does Data4 deploy?

B200, A100, MI300X, H100

In which countries does Data4 operate?

Croatia, France, Germany, Greece, Iceland, Italy, Netherlands, Norway, Romania, Spain, Switzerland, United Kingdom

[Knowledge Graph]

Company → Datacenter → GPU → Customer → Industry

Every entity on this site is cross-linked. Follow the graph from operators down to specific facilities, GPU clusters, customers, and sectoral context.