Hello HyeVltg3,
Hopefully the following (
compliments of Wikipedia) will help answer some of your questions.
The LGA is used as a physical interface for microprocessors of the
Intel Pentium 4 and
AMD Opteron families. Unlike the
pin grid array (PGA) interface found on most
AMD and
Intel processors, there are no pins on the chip; in place of the pins are
pads of bare gold-plated copper that touch pins on the
motherboard.
LGA processor sockets include
Socket F (also called Socket 1207) from
AMD[1] and the
Prescott core Pentium 4 and Xeon chip systems with the new model number system from
Intel.
The Intel desktop LGA socket is dubbed
Socket 775 or
Socket T while the server variant is dubbed Socket J or Socket 771. Intel supposedly decided to switch to an LGA socket because it provides a larger contact point, allowing, for example, higher clock frequencies. The LGA setup provides higher pin densities, allowing more power contacts and thus a more stable power supply to the chip. Motherboard vendors have complained that LGA packaging was introduced solely to move the burden of bent pin problems from Intel to the electronics vendors.[
citation needed]
Similar to Intel, AMD decided to use an LGA socket because it allows higher pin densities. The required size of a 1207-pin PGA would simply be too large and would consume too much space on motherboards.
Intel released its new LGA format processors in
June 2004 and recently displayed plans to transition its
Xeon processors to LGAs.
AMD released its
Socket F LGA Opteron in 2nd quarter
2006.
Good Luck
LC