Graphic card bridges link two or more graphics cards into one high-bandwidth connection: physical bridge connectors that join adjacent GPUs for workloads built to take advantage of multiple cards working together, distinct from the standard PCI Express slot connection every card already has on its own. Where a workload is designed around multi-GPU scaling, the bridge is what makes the cards act as one resource instead of two.
Bridges are matched to a specific GPU family, bridge protocol, and physical spacing between card slots - a bridge built for one manufacturer's multi-GPU link does not fit another's, and slot spacing on the motherboard has to match the bridge's physical span. Confirm the workload or application actually supports multi-GPU scaling before investing in cards and a bridge together; not every use case benefits from it even when the hardware supports it. Motherboard slot layout should be planned around the bridge's spacing requirement before the build starts, not discovered afterward. COLAMCO supplies graphics card bridges for the multi-GPU workstation and server builds business, government, and education programs assemble.