Lian Li PC-O5S

The Lian Li PC-O5S is a HTPC with support for ATX, Micro-ATX, Mini-ITX motherboards. It includes 2 fans pre-installed and mounts up to 6. GPU clearance tops out at 400mm — room for full triple-fan flagship cards — with 170mm of air-cooler headroom. A tempered glass side panel shows off the build.

Use the PlanMyPC system builder to verify it works alongside your other components and to watch live retailer pricing. Lian backs the product through its standard warranty channels; check the listing for region-specific terms. Scroll down for the complete spec table; the builder's compatibility checker will warn you about any conflicts with components you have already picked.