What Is Socket P? (with pictures)
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Socket P is a central processing unit (CPU) socket that semiconductor company Intel Corporation debuted on 9 May 2007 for some of its mobile processors. These are CPUs that Intel designs specifically for application on laptop, or notebook, personal computers (PCs). Intel designated it as the successor to Socket M. The main function of the Socket P, like other processor sockets, is to serve as a spot on the computer’s motherboard where it can be plugged in for stability and data transfer.
A computer motherboard.
Each Socket P has 478 pin holes, which it uses for accommodating the pins of the CPU. Intel arranges these pin holes in neat rows at the sides of the socket’s square-shaped structure. This arrangement is known as a pin grid array (PGA). Socket P’s predecessor, Socket M, also has 478 pin holes, so the former also goes by the Micro FCPGA-478 and the latter by mPGA478MT for further differentiation.
A heatsink is the part of a computer designed to move heat away from a computer’s central processing unit.
More specifically, Socket P uses a PGA variant called flip-chip pin grid array (FCPGA), which involves the back of the CPU’s die—the wafer of semiconductor material that contains its cores, or processing units—facing upward. The FCPGA design of Socket P permits users to place a heatsink on the die, which decreases the processor’s heat and consequently increases its energy efficiency. It is a form factor that Intel introduced with the debut of Socket 370 in 1999 for some of its low-end Celeron and then-flagship Pentium III computer chips.
Intel primarily uses Socket P for CPUs from the Intel Core 2 brand, which appeared in 2006 to replace the Pentium as the company’s premier family of computer chips.
More specifically, the socket is compatible with the T5xx0, T6xx0, T7xx0, T8x00 and T9xx0 series of the Core 2 Duo Mobile—Core 2 laptop PC chips with two cores—and the Q9x00 series of the Core 2 Quad Mobile—Core 2 laptop PC chips with four cores. The Pentium, by now demoted to mid-range status, and the Mobile Celeron, were not left out, though. Intel extended compatibility to the Pentium’s dual-core T23x0, T2410, T3x00, T4x00 series, as well as all Celeron M processors. The accommodated data transfer speeds are 400, 533, 667, 800 and 1,066 megahertz (MHz), or million transfers per second (MT/s).
Socket M is also compatible with some of the members of the Intel Core 2 Duo family, particularly of the T5xx0 and T7xx0 series.
Moreover, users can physically fit Socket P or Socket M into Socket 479, which preceded them both in 2003. Neither socket, however, shares electrical compatibility with Socket 479.
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Everything You Should Know About LGA 3647
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Read the following content to have a comprehensive understanding of LGA 3647 and info involved with it.
Learn more at MiniTool partition manager web page.
What Does LGA 3647 Mean?
In usual situations, LGA 3647, also called Socket P, refers to a kind of CPU socket that is compatible with the certain Intel processors including Intel Xeon Phi 72×0 (“Knights Landing”), Intel Xeon Phi 72×5 (Knights Mill”), Intel Skylake-SP, Intel Cascade Lake-SP/AP, and Intel Cascade Lake-W microprocessors.
This type of sockets adopts Flip-chip land grid array (FCLGA) chip form factors, and it has 3647 pins or contacts to contact with the underside of the processors. Socket LGA 3647 makes use of Intel Ultra Path Interconnect (UPI) as a replacement for QuickPath Interconnect (QPI) and direct media interface (DMI) 3.0 serving as its front-side bus (FBS) protocols. Its supported processors’ dimensions are 76.0 mm x 56.5 mm.
LGA-3647 socket supports a 6-channel memory controller, double data rate 4 synchronous dynamic random-access memory (DDR4 SDRAM), and non-volatile 3D XPoint memory DIMMs.
It uses 100G Omni-Path interconnect and a new mounting mechanism that doesn’t use a lever to secure it on the motherboard, instead of secured by the CPU cooler’s pressure.
Slot LGA 3647 succeeded socket LGA 2011 in the performance and low- and mid-end server platforms in 2016.
LGA 3647 Sub-versions
There are 2 variants of land grid array 3647 sockets, LGA 3647-0 (socket P0) and LGA 3647-1 (socket P1). They are different in several aspects including the independent loading mechanism (ILM), processor package carrier frame (square vs narrow) preventing mounting the heatsinks for other socket versions.
Tip: Noctua is an LGA 3647 cooler that is specially designed for Intel LGA 3647 CPU socket coming with both square and narrow carrier frames.
Respectively, LGA 3647-0 version is used for Intel Skylake-SP and Intel Cascade Lake-SP/AP processors, while LGA 3647-1 version is applied to Intel Xeon Phi x200 processors.
LGA 3647 CPU List
Intel Xeon Phi 72×0 Series (“Knights Landing”)
- Intel Xeon Phi 7210
- Intel Xeon Phi 7210F
- Intel Xeon Phi 7230
- Intel Xeon Phi 7230F
- Intel Xeon Phi 7250
- Intel Xeon Phi 7250F
- Intel Xeon Phi 7290
- Intel Xeon Phi 7290F
Intel Xeon Phi 72×5 Series (Knights Mill”)
- Intel Xeon Phi 7235
- Intel Xeon Phi 7285
- Intel Xeon Phi 7295
Intel Skylake-SP
- Intel Xeon Bronze: 3104 and 3106
- Intel Xeon Silver 41xx
- Intel Xeon Gold: 51xx, 61xx
- Intel Xeon Platinum 81xx
Intel Cascade Lake-SP/AP
- Intel Xeon Platinum 82xx
- Intel Xeon Gold: 62xx, 52xx
- Intel Xeon Silver 42xx
- Intel Xeon Bronze: 3206R & 3204
- Intel Xeon W-32xx
LGA 3647 Motherboards
The following will introduce you with 3 popular motherboards of LGA 3647 socket.
#1 GIGABYTE W42G-P08R (rev. 1.0)
This is a dual-socket p (LGA-3647) motherboard that supports the first and second generation of Intel Xeon scalable processors. It has 12 x DDR4 RDIMM/LRDIMM with 6-channel and up to 1.5TB capacity. The system board equips with 8 x 3.5” hot-swappable HDD bays, Aspeed AST25 BMC, dual Intel Server GbE LAN, as well as 2000W 1+1 redundant PSU.
#2 SUPERMICRO MBD-X11SPM-F-O Micro ATX Server Motherboard
This motherboard comes from Supermicro and is of micro ATX size. It adopts a single LGA 3647 CPU socket, supports Intel Xeon Scalable processors, Intel C621 chipset, and CPU TDP 165W. It supports up to 768GB ECC 3DS LRDIMM, DDR4-2666 MHz, 6 x 288-pin DDR4 slots, 2 PCI Express 3.0 x 16 expansion slots, 12 x SATA 6.0 Gb/s, as well as 5 x USB 3.0.
#3 AsRock Rack EPC621D4I-2M Mini-ITX Server Motherboard
This kind of motherboard is of Mini-ITX size and is special for server computers. It supports Intel Xeon Scalable processors, 4 x DDR4 SO-DIMM slots (4 channel), 7 x SATA 3.
0, 1 x PCIe 3.0 x 16, and 2 x GLAN by Intel integrated MAC X722 + Marvell 88E1514.
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Intel Socket P mPGA478MN Merom (965) processors
Intel Socket P mPGA478MN Merom (965) processors.
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