Comparison Intel Core i5 Alder Lake i5-12400 BOX vs Intel Core i5 Coffee Lake i5-8400 BOX

This parameter characterizes, firstly, the technical process (see above), and secondly, some features of the internal structure of processors. A new (or at least updated) codename is introduced to the market with each new CPU generation; chips of the same architecture are "coevals", but may belong to different series (see above). At the same time, one generation can include both one and several code names.

Here are the most common Intel codenames today: Cascade Lake-X (10th gen), Comet Lake (10th gen), Comet Lake Refresh (10th generation), Rocket Lake (11th generation), Alder Lake (12th generation), Raptor Lake (13th generation), Raptor Lake Refresh (14th generation).

For AMD, this list includes Zen+ Picasso, Zen2 Matisse, Zen2 Renoir, Zen3 Vermeer, Zen3 Cezanne, Zen4 Raphael, Zen4 Phoenix and Zen5 Granite Ridge.

The type of connector (socket) for installing the processor on the motherboard. For normal compatibility, it is necessary that the CPU and motherboard match the socket type; before buying one and the other, this point should be clarified separately

The following sockets are relevant for Intel processors today: 1150, 1155, 1356, 2011, 2011 v3, 2066, 1151, 1151 v2, 3647, 1200, 1700, 1851.

In turn, AMD processors are equipped with the following types of connectors: <AM3/AM3+, FM2/FM2+, AM4, AM5, TR4/TRX4, WRX8.

The technical process by which the CPU is manufactured.

The parameter is usually specified by the size of the individual semiconductor elements (transistors) that make up the processor integrated circuit. The smaller their size, the more advanced the technical process is considered: miniaturization of individual elements allows you to reduce heat generation, reduce the overall size of the processor and at the same time increase its flow Rate. CPU manufacturers are trying to move towards reducing the technical process, and the newer the processor, the lower the numbers you can see at this point.

The technical process is measured in nanometers (nm). In the modern arena of central processors, solutions made using the 7 nm, 10 nm, 12 nm process technology predominate, high-end CPU models are manufactured using the 4 nm and 5 nm process technology, 14 nm and 22 nm solutions are still afloat, and are rapidly fading into the background, but 28 nm and 32 nm occur periodically.

Number of high-performance Performance Cores (or P-Cores) in Intel processors since 12th generation (Alder Lake). P-cores have support for Hyper-Threading and take on the execution of resource-intensive tasks of the first plan. Those. they are directly responsible for the performance level of the processor as a whole.

The number of instruction streams that the processor can execute at the same time.

Initially, each physical core (see "Number of cores") was intended to execute one thread of instructions, and the number of threads corresponded to the number of cores. However, there are many processors today that support Hyper-threading or SMT (see below) and can run two threads on each core at once. In such models, the number of threads is twice the number of cores — for example, 8 threads will be indicated in a quad-core chip.

In general, a higher number of threads, other things being equal, has a positive effect on speed and efficiency, but increases the cost of the processor.

Processor support for Hyper-threading.

Hyper-threading is actually a variant of simultaneous multithreading (SMT) developed by Intel and used in its chips since 2002. This technology is used to optimize the load on each physical processor core. Its key principle (simplified) is that each such core is defined by the system as 2 logical cores — for example, the system “sees” a dual-core processor as a quad-core one. At the same time, each physical core constantly switches between two logical cores, in fact, between two threads of commands: when a delay occurs in one thread (for example, in case of an error or while waiting for the result of the previous instruction), the core does not idle, but starts executing the second thread commands. Thanks to this technology, the response time of the processor is reduced, and in server systems, stability is increased with numerous connected users.

In AMD processors, a similar function is used under the original name SMT (see below).

The number of cycles per second that the processor produces in its normal operating mode. A clock is a single electrical impulse used to process data and synchronize the processor with the rest of the computer system. Different operations may require fractions of a clock or several clocks, but anyway, the clock frequency is one of the main parameters characterizing the performance and speed of the processor — all other things being equal, a processor with a higher clock frequency will work faster and better cope with significant loads. At the same time, it should be taken into account that the actual performance of the chip is determined not only by the clock frequency, but also by a number of other characteristics — from the series and architecture (see the relevant paragraphs) to the number of cores and support for special instructions. So it makes sense to compare by clock frequency only chips with similar characteristics belonging to the same series and generation.

The base clock speed of high-performance P-cores for Intel processors on a hybrid architecture.

The maximum processor clock speed that can be reached when running in Turbo Boost or Turbo Core overclocking mode.

The name "Turbo Boost" is used for the overclocking technology used by Intel, "Turbo Core" for the solution from AMD. The principle of operation in both cases is the same: if some cores are not used or work under a load below the maximum, the processor can transfer part of the load from the loaded cores to them, thus increasing computing power and performance. Operation in this mode is characterized by an increase in the clock frequency, and it is indicated in this case.

Note that we are talking about the maximum possible clock frequency — modern CPUs are able to regulate the operating mode depending on the situation, and with a relatively low load, the actual frequency may be lower than the maximum possible. See "Clock frequency" for the general meaning of this parameter.