What is Core i7?

The Core i7 (Chinese: Core i7, core code: Bloomfield) processor is a 64-bit quad-core CPU introduced by Intel in 2008. It follows the x86-64 instruction set and is based on the Intel Nehalem microarchitecture. Device.

Core i7

The Core i7 (Chinese: Core i7, core code: Bloomfield) processor is a 64-bit quad-core CPU introduced by Intel in 2008. It follows the x86-64 instruction set and is based on the Intel Nehalem microarchitecture. Device.

Based on Nehalem architecture

"Lynnfield" (45nm)

Based on Nehalem architecture

Core code: "Clarksfield" (45 nm)

CPU support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EIST, Intel 64, XD bit, TXT, Intel VT-x, Intel VT-d, Hyper-threading, Turbo Boost, Smart Cache .

FSB replaced by DMI

Number of transistors: 774 million

Core area: 296 square millimeters

i7-920XM and 940XM two open frequency multiplier

model	Stepping	Core thread	Main frequency	Acceleration frequency	Secondary cache	L3 cache	TDP	Slot	DMI bus	Memory support
Core i7-720QM	B1	Quad-core eight threads	1.6GHz	2.8GHz	4 × 256KB	6MB	45W	Socket G1	2.5GT / s	DDR3-1333 dual channel
Core i7-740QM	B1	Quad-core eight threads	1.73GHz	2.93GHz	4 × 256KB	6MB	45W	Socket G1	2.5GT / s	DDR3-1333 dual channel
Core i7-820QM	B1	Quad-core eight threads	1.73GHz	3.06GHz	4 × 256KB	8MB	45W	Socket G1	2.5GT / s	DDR3-1333 dual channel
Core i7-840QM	B1	Quad-core eight threads	1.86GHz	3.2GHz	4 × 256KB	8MB	45W	Socket G1	2.5GT / s	DDR3-1333 dual channel
Core i7-920XM	B1	Quad-core eight threads	2GHz	3.2GHz	4 × 256KB	8MB	55W	Socket G1	2.5GT / s	DDR3-1333 dual channel
Core i7-940XM	B1	Quad-core eight threads	2.13GHz	3.33GHz	4 × 256KB	8MB	55W	Socket G1	2.5GT / s	DDR3-1333 dual channel

Based on Westmere architecture

"Arrandale" (32 nm)

CPU support: MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, EIST, Intel 64, XD bit, TXT, Intel VT-x, Intel VT-d, Hyper-threading, Turbo Boost, AES- NI, Smart Cache.

FSB replaced by DMI

Number of transistors: 382 million

Core area: 82 square millimeters

Graphics Core and Integration

i5 Core i7 Core i5

The Core i5 processor is a product of Intel and is an Intel Co

Core i5

Derived from the mid- to low-level version of re i7, it is also based on Intel Nehalem microarchitecture. Unlike the Core i7 which supports three-channel memory, the Core i5 will only integrate a dual-channel DDR3 memory controller. In addition, Core i5 will integrate some Northbridge functions and will integrate a PCI-Express controller. The interface is also different from the Core i7's LGA 1366. The Core i5 uses a new LGA 1156. In terms of processor cores, codenamed Lynnfiled, the 45-nanometer Core i5 will have four cores. It does not support hyper-threading technology and only provides four threads in total. In terms of L2 buffer memory, each core has its own independent 256KB and shares an L3 buffer memory of up to 8MB.

For the chipset, Intel P55 (codename: IbexPeak) will be used. In addition to supporting Lynnfield, it will also support Havendale processors. Although the latter has only two processor cores, it integrates a display core. The P55 will use a single-chip design, similar in function to the traditional South Bridge, and support SLI and Crossfire technologies. However, unlike the high-end X58 chipset, the P55 will not use the newer QPI connection, but will use traditional DMI technology. In terms of interface, it can be compatible with other 5 series chipsets [2]. It will replace the P45 chipset.

i3 Core i7 Core i3

The Core i3 processor is Intel's first CPU + GPU product, based on the Intel Westmere microarchitecture. Unlike the Core i7 which supports three-channel memory, the Core i3 only integrates a dual-channel DDR3 memory controller. In addition, Core i3 integrates some Northbridge functions and will integrate a PCI-Express controller. The interface is also different from the Core i7's LGA 1366. The Core i3 uses a new LGA 1156. In terms of processor cores, codenamed Clarkdale, the Core i3 with a 32-nanometer process has two cores and supports Hyper-Threading Technology. In terms of L3 buffer memory, the two cores share 4MB. Core i3 was launched in early 2010.

For the chipset, Intel P55, P57 (codename: IbexPeak) is used. In addition to Lynnfield, it also supports Havendale processors. Although the latter has only two processor cores, it integrates a display core. The P55 uses a single-chip design and features similar to the traditional Southbridge, supporting SLI and Crossfire technologies. However, unlike the high-end X58 chipset, the P55 does not use the newer QPI connection (because the I3 processor integrates PCI-E and the memory controller in the CPU, it is still connected by QPI, but the external is DMI and single Chip P55 is connected), while using traditional DMI technology. In terms of interface, it can be compatible with other 5 series chipsets.