The LGA 775, also known as Socket T, debuted in 2004. It is known as the most popular land grid array (LGA) socket, as well as the one that signaled the beginning of LGA's form factor dominance in the semiconductor market. Its manufacturer, Intel Corp., initially designed it primarily for some of its Pentium 4 processors (or central processor units), although compatibility was soon extended to some Celeron, Core 2 and Xeon chips.
Socket Specs
LGA is actually an acronym for Land Grid Array, which entails the socket pins that accommodate the processor arranged in a neat, grid-like layout on its square-shaped substrate. The number stands for the amount of pins it contains. The LGA 775's gold-plated pins comprise four rows that join together to form a grid that measures 1.29 inches in length and 1.18 inches in width. The socket itself is 1.48 square inches, with a 0.6-by-0.55-inch (15-by-14-mm) section missing from the center.
Variation
The LGA 775's socket is made of plastic. Thus, it is sometimes referred to as PLGA, which stands for Plastic Land Grid Array. In other cases, it might bear the Flip-Chip Land Grid Array designation, which describes the manner in which the processor is installed. With FCLGA, the CPU is flipped to one side so that the back of the die -- the hottest part of the processor -- is exposed. This allows users to place a heatsink on it for reducing its heat and thus prevent malfunction or save energy.
General/Main Processor Specifications
Intel designed the LGA 775 to be compatible with processors that have a data transfer speed of 533, 800, 1,066, 1,333 or 1,600 MHz. In other words, an LGA 775 processor must be able to perform 5.33 million, 8 million, 1.06 billion, 1.33 billion or 1.6 billion transfers per second. Intel mainly released the LGA 775 for its then-flagship Intel Pentium 4 brand, with compatibility granted to chips within a processing range of 2.66 to 3.73 GHz.
Other LGA 775 processors
The Intel Pentium 4 is not the only LGA 775 processor. When Core 2 displaced it in 2006 as Intel's flagship consumer-oriented processor, the company extended compatibility to its entries within a 1.8-to-3.33 GHz processing range. Other LGA 775 processors are members of the workstation- and server-oriented Xeon, with a processing range of 1.86 to 3.16 GHz; budget-oriented Celeron at 1.6 to 3.6 GHz; and the Pentium Dual-Core, which succeeded the Pentium 4 and has a 1.6- to 3.06-GHz range.
Tags: Land Grid, processing range, billion billion, Grid Array, Intel Pentium, Land Grid Array