Regardless of the physical size of the card, the connector and board thickness remain consistent to ensure fitment in the motherboard slot.
| Form Factor | Height | Depth (Length) | Width (Slot) | Typical Use Case | | :--- | :--- | :--- | :--- | :--- | | | 4.376" (111.15mm) | Up to 12.283" (312mm) | 1U (single) | High-end GPUs, Server RAID cards | | Full Height, Half Length | 4.376" (111.15mm) | ≤ 6.6" (167.65mm) | 1U or 2U | Standard desktop GPUs, Sound cards, NICs | | Low Profile (Half Height) | 2.536" (64.41mm) | ≤ 6.6" (167.65mm) | 1U | Small form factor (SFF) PCs, HTPCs | | Low Profile, Low Length | 2.536" (64.41mm) | ≤ 4.721" (120mm) | 1U | Compact Wi-Fi cards, USB controllers | pcie card dimensions
When upgrading a PC or building a server, understanding is critical for ensuring physical compatibility between your hardware and the case. PCIe (Peripheral Component Interconnect Express) standards define specific heights, lengths, and slot widths to maintain uniformity across the industry. 1. Standard PCIe Card Heights Regardless of the physical size of the card,
Always verify two numbers before buying: Bracket height (standard or low profile) and Card length (measure from your case’s rear bracket to drive cage/fan). HTPCs | | Low Profile
PCIe cards use different keying and connectors to prevent incorrect installation: