Socket 7 (Socket7)

Socket 7 was introduced by Intel for it's Pentium 133 - 200 MHz processors and for Pentium MMX processor family. The major feature of the new socket was support for dual plane voltage - the socket could supply different voltages to processor core and I/O logic. At the same time, the socket 7 was backward compatible with socket 5, and it was possible to run older (single voltage) processors in socket 7 motherboards. For their next generation of processors Intel chose different socket type - slot 1, and completely abandoned socket 7. Luckily, Intel competitors continued to support socket 7 architecture, and they even enhanced it by creating a "Super socket 7" specification by adding support for 100 MHz bus frequency, backside L2 cache and frontside L3 cache.

Socket 7 has 321 pin holes arranged as 37 x 37 pin matrix. The socket has the same size as the Socket 5, but the socket 5 has only 320 pin holes. The extra pin on socket 7 processors is not electrically connected and it's main purpose is to prevent socket 7 processors to be inserted into socket 5 motherboards.

  Supported processors  

AMD K5 (75 MHz - 200 MHz)
AMD K6 (166 MHz - 300 MHz)
AMD K6-2 (200 MHz - 570 MHz, often requires 100 MHz bus support)
AMD K6-III (333 MHz - 550 MHz, often requires 100 MHz bus support)
Cyrix 6x86, 6x86L and 6x86MX (90 MHz - 266 MHz)
Cyrix MII (233 MHz - 433 MHz)
IBM 6x86, 6x86L and 6x86MX (90 MHz - 300 MHz)
IDT Winchip C6 (180 MHz - 240 MHz)
IDT Winchip 2 (200 MHz - 240 MHz)
Intel Pentium (non-MMX) (75 MHz - 200 MHz)
Intel Pentium MMX (166 MHz - 233 MHz)
Rise Technology MP6 (150 MHz - 366 MHz)
ST 6x86 (90 MHz - 166 MHz)

  Compatible package types  

296-pin staggered Plastic Pin Grid Array (PPGA)
296-pin staggered Ceramic Pin Grid Array (CPGA or SPGA)
296-pin Flip-Chip staggered Ceramic Pin Grid Array
321-pin ceramic Ping Grid Array (CPGA)

  Upgrading socket 7 motherboards  

Although many socket7 microprocessors will fit into your motherboard, not all of them may be supported by the board. To determine the fastest processor for your motherboard you'll need to:

• Determine manufacturer and model of your motherboard,
• Search on manufacturer's website for the motherboard model.

For upgrade information for ABIT, ASrock, ASUS, DFI, ECS, Gigabyte Technology, Jetway, MSI, PC Chips and Shuttle motherboards please check CPU-Upgrade motherboard database.