M : Notebook-specific CPU, generally dual-core, the first digit of M is 0, which means it is a standard voltage processor, if it is 7, it is a low voltage processor.
U : Low-voltage CPU dedicated to notebooks, generally dual-core, the first digit of U is 8, it is a low-voltage processor with 28W power consumption (standard voltage dual-core processor power consumption is 35W), if the previous digit is 7, then It is a low-voltage processor with a power consumption of 17W. If it is 0, it is a low-voltage processor with a power consumption of 15W.
QM, MQ : (4th generation changed to MQ): Notebook dedicated CPU, "Q" is the abbreviation of "Quad", that is, quad-core CPU. If the first digit of QM is 0, it means that the product is a standard voltage quad-core processor with a power consumption of 45W. If it is 2, it means that the product is a low-voltage quad-core processor with a power consumption of 35W. The main specifications of the CPU corresponding to 0 are the same, but the integrated core graphics card frequency is higher (such as 3630QM and 3635QM, the latter core display maximum frequency of 1.2GHz, the former is 1.15GHz).
HQ : A new series of fourth-generation CPUs. The main parameters are the same as the standard quad-core CPUs, but the Iris Pro5200 series of core graphics cards with unprecedented performance are integrated. The performance of this core graphics card is directly comparable to that of mid-range discrete graphics cards. There are currently three CPUs: i7 4750HQ, 4850HQ and 4950HQ. Later, an i7 4702HQ came out, which did not integrate a high-performance core graphics card, and was a product with a vague positioning.
XM : The most powerful notebook CPU, the power consumption is generally 55W. "X" means "Extreme", this type of CPU is completely unlocked, and can be overclocked without limit when heat dissipation and power supply allow, and even at the default frequency, it is much more powerful than other products of the same era. This type of CPU is carefully selected after factory production, with excellent quality and perfect performance, but the price is very expensive. The wholesale price of an XM series CPU can reach more than 1,000 US dollars (ordinary quad-core is about 3,400 US dollars).
Note :
The above are all notebook CPUs and desktop CPUs. The standard models generally have no suffix letters. If there is a suffix subtitle "K", it is a version that can be overclocked. If there is a suffix subtitle "X", it is the top-level Extreme Edition (Desktop Extreme The version CPU is 6 cores and 12 threads).
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