The full name of MXM is Mobile PCI Express Module, which is a set of device interfaces designed for graphics processors based on PCI-Express interface. It is located in different types of notebook products, and is jointly formulated by nVidia and several notebook computer manufacturers, and adopts a communication protocol compatible with PCI-Express. Therefore, it can be used in all drawing cores supporting PCI-Express specification and chipsets supporting PCI-Express drawing interface, which not only shortens the product design cycle, but also enables manufacturers to provide different grades of MXM graphics card products according to different needs of users, and users can upgrade MXM graphics cards as needed in the future without replacing the whole notebook computer. Although MXM was put forward and formulated by NVIDIA, it is not a patent of NVIDIA. It is an open specification and is used by other graphics card manufacturers. Therefore, some manufacturers have produced non-NVIDIA MXM modular graphics cards, such as ATI and XGI.
2.2 classification. MXM:
According to the size of PCB and the number of pins, MXM modules can be divided into four types, namely MXM-I, MXM-II, MXM-III and MXM-HE, in which the sizes of MXM-I, MXM-II and MXM-III are different, while the PCB sizes of MXM-III and MXM-HE are exactly the same, and the latter is two more than the former. It can cover all I/O output signals of PCI-E 16X, but the he version can provide higher power for the MXM module card, which is suitable for high-end products. In addition, MXM is not compatible with each other, but is compatible from top to bottom.
Note: MXM module is compatible with ATi core products. The MXM module containing ATi kernel is described here.
Detailed technical parameters of three modules in 3.MXMI/II/III:.
All MXM modules use PCI-E 16X slots to obtain power directly, and the power supply standard is 5V. Among them, the two extra pins in MXM-HE are equivalent to the independent power supply unit in the desktop graphics card, which can directly obtain power for the system from batteries or other power input devices and provide better power for MXM modules. MXM-HE module is mostly used for 7900GO graphics cards, and the graphics cards we contact in daily life generally use MXM-I.
As for whether the MXM module supports other PCI-E devices, many users are puzzled. We can judge that the MXM slot is completely compatible with other devices, but no device can use the bus of 16X, so the current graphics card is MXM.
MXM has a very interesting function. NVIDIA didn't give him a nice name, but called it IGP and MXM in various documents, which is a very meaningful function for notebook computers. This function is mainly aimed at integrated graphics chipset supporting PCI-E 16X bus, such as Intel 9 15GM/945GM. Through the definition of cross signal output defined by MXM, the product can be used without any hardware adjustment or jumper when using independent or integrated graphics cards. This is also the composition principle of the so-called "dual graphics card" notebook promoted by some media. Through simple cross signal output, LVDS and DVI(TMDS standard) signals are mixed with the display core integrated with the North Bridge chip, and users can choose which graphics card to output signals.
This function is not designed for users, but for ODM vendors. Once this function is available, ODM manufacturers can completely produce notebook computers with independent graphics cards and integrated graphics cards, thus reducing the production and design costs.
It is not designed for users because it does not support hot plugging or thermal shielding. Switching between graphics card and signal requires restarting the computer to load BIOS data of graphics card. It is not a complete dual graphics card synchronous data output, which has nothing to do with SLI. Those manufacturers who promote dual graphics cards are just looking for more publicity gimmicks for their products.
Advantages of 4.4. MXM:
(1) Shorten the design cycle
As we all know in the industry, modular design is the best way to shorten the design cycle and bring the latest GPU to market faster. All along, manufacturers have achieved this goal with the help of proprietary module design customized for specific platforms. MXM graphical interface enables any notebook computer manufacturer to shorten the design cycle of various notebooks.
(2) Single design is suitable for all kinds of notebook computers.
Many platforms increase the complexity of inventory management, logistics and technical support. With MXM graphics interface, notebook computer manufacturers can flexibly configure various graphics chips for different market segments and price requirements with a single basic platform.
(3) Any graphics processing solution applicable to any manufacturer.
By creating a unified graphical interface suitable for all notebook types, MXM allows manufacturers to make full use of the best graphical processing solutions at that time at any time and provide users with more latest products.
(4) Upgradable notebook cg animation chip.
As a unified cg animation interface for notebook computers, MXM provides an upgradeable graphic chip design specification for notebook computers.
(5) Cooperate with leading notebook computer designers and manufacturers.
In order to provide users with support and accelerate the adoption of PCI Express bus technology in notebook computers, NVIDIA cooperated with the industry-leading ODM to design a unified graphical interface for MXM.
The notebook computer market is the fastest growing field in the PC industry, and PCI Express bus technology has created a good opportunity for manufacturers to adopt various innovative graphics processing solutions. By cooperating with us to design the unified graphical interface of MXM, the leading notebook computer manufacturers have introduced an innovative interface, which can keep the cg animation technology of notebook computers in step with the development of desktop computers.