Buyer rule
Start with GPU dimensions, airflow, connector room, and service access
Choose by exact motherboard dimensions, GPU clearance, cable pass-through access, radiator support, storage needs, PSU room, and expansion cards.

E-ATX case prices
E-ATX support varies by case. Some cases support wider boards but lose cable pass-throughs, drive mounts, or radiator room once the full build is installed.
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Buyer rule
Choose by exact motherboard dimensions, GPU clearance, cable pass-through access, radiator support, storage needs, PSU room, and expansion cards.
Risk
The common mistake is reading E-ATX support as automatic workstation fit without checking board width, cable holes, and GPU service access.
Amazon case lanes
Use these lanes after GPU length, slot thickness, side-panel clearance, power-cable bend room, intake path, fan mounts, PSU space, and service access are specific. Amazon has the current listing details, seller terms, shipping, returns, and exact product specifications.
Large-board lane for enthusiast and workstation motherboards.
Extra-space lane for large motherboards, long GPUs, and cooling hardware.
Expansion lane for creator, engineering, and local AI builds.
Cooling lane for builds that need radiator room around larger boards.
Drive-space lane for workstations with many SSDs or hard drives.
Control lane for larger cases that use many intake and exhaust fans.