 | |
| Type | LGA |
|---|---|
| Chip form factors | Flip-chip land grid array |
| Contacts | 1156 |
| FSB protocol | PCIe 16× (video) + 4× (DMI) + 2 DP (FDI), 2 DDR3 channels |
| Processor dimensions | 37.5 × 37.5 mm[1] |
| Processors | Nehalem Westmere |
| Predecessor | LGA 775 (high-end desktops and low-end servers) LGA 771 (low- and mid-end servers) |
| Successor | LGA 1155 |
| Memory support | DDR3 |
This article is part of the CPU socket series | |
LGA 1156 (land grid array 1156), also known as Socket H[2][3] or H1, is an Intel desktop CPU socket. The last processors supporting the LGA 1156 ceased production in 2011. It was succeeded by the mutually incompatible socket LGA 1155.
LGA 1156, along with LGA 1366, were designed to replace LGA 775. Whereas LGA 775 processors connect to a northbridge using the Front Side Bus, LGA 1156 processors integrate the features traditionally located on a northbridge within the processor itself. The LGA 1156 socket allows the following connections to be made from the processor to the rest of the system:
- PCI-Express 2.0 ×16 for communication with a graphics card. Some processors allow this connection to be divided into two ×8 lanes to connect two graphics cards. Some motherboard manufacturers use Nvidia's NF200 chip to allow even more graphics cards to be used.
- DMI for communication with the Platform Controller Hub (PCH). This consists of a PCI-Express 2.0 ×4 connection.
- FDI for communication with the PCH. This consists of two DisplayPort connections.
- Two memory channels for communication with DDR3 SDRAM. The clock speed of the memory that is supported will depend on the processor.
The LGA 1366 platform reached EOL on June 29, 2012. LGA 1156 reached EOL on December 7, 2012.[4]
- ^ "Intel Core i5/i7 Datasheet" (PDF).
- ^ Socket Transition Guidance
- ^ Intel Core i7 & i5 Compatibility Sheet Archived December 2, 2010, at the Wayback Machine
- ^ "Intel pulls the plug on several LGA 1366 and 1156 CPUs". Tech2. December 10, 2011. Retrieved February 10, 2023.