Generally speaking, we find that most applications can't take full advantage of six or eight cores, so the performance boost from extra cores isn't as great. Hyper-Threading is Intel's technology for creating two logical cores in each physical core. In other words, to your operating system it appears as though your CPU has double the number of cores than it really does. In terms of performance, Hyper-Threading speeds up multi-tasking and multi-threaded applications.
It's not as fast or as efficient as extra 'real' cores, but it's an improvement over a single Core. Core i3 and i7 processors have this technology, Core i5 processors do not. The faster the clock speed in MHz, the faster each core can run.
This can create some variances in performance. For example, a Core i Haswell processor runs at 3. It would be faster running a single-threaded application, which can only use one core, than a Core i, which only has a clock speed of 3.
However, running a multi-threaded application, the Core i5 would most likely be quicker, as its four real cores are better than the Core i3's two cores and Hyper-Threading. Turbo Boost is Intel's technology for automatically overclocking a processor, boosting its clock speed higher than the default setting.
The CPU monitors its temperature and, when it's running cool enough, will apply the overclock. Core i5 and i7 CPUs have this technology, Core i3 models do not.
This means that you can use BIOS settings to up the clock speed of the chip, overclocking it yourself. We've seen big improvements in performance this way - we pushed the Intel Core iK chip to 4. All Intel processors have graphics chips in them. Pre-Haswell, the GPUs weren't particularly good for games, although they were fine for watching video. With Haswell, came the Intel HD Graphics line, which is fine for a bit of light gaming; some cheaper models we'll show you how to check later have HD Graphics chips, which are fine for some older less-demanding games.
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Hyper-Threading technology is used to increase performance on multithreaded tasks, letting each core address two processing threads at the same time instead of just one. The simplest multithreaded situation is a user running several programs simultaneously, but other activities can leverage Hyper-Threading under certain conditions, such as media creation and editing work notably, transcoding and rendering, where the software supports multithreading and even at times web surfing loading different page elements, like videos and images, simultaneously.
In general, all else being equal, a CPU that supports Hyper-Threading in a given family will be more capable than one that does not, if what you do day to day is heavily influenced by this feature. This is even true between Core families, which means that it may be better, if your software relies heavily on multithreading, to choose a four-core chip with Hyper-Threading over an equivalent six-core without.
When shopping for PCs, alas, it's not always easy to find information on the number of cores, or the presence or absence of Hyper-Threading support, on a PC vendor's spec list. If you can find the chip's exact model number, though, plug it into Intel's specs database , which will show you clock speed, core count, Hyper-Threading support, and much more. Most thin and light laptops with Core i5 or Core i7 processors that aren't gaming machines rely on integrated graphics-acceleration silicon that's part of the CPU die.
Gaming machines and certain high-end systems, on the other hand, have dedicated graphics chips that are separate from the CPU. Core i5 and Core i7 chips come with different kinds of integrated graphics capabilities. Iris Plus is a step up, available on many 10th-generation chips.
The latest and greatest integrated graphics is Iris Xe, available on only a few 11th-generation Core i5 and Core i7 models. Integrated graphics save power, since there's no extra graphics chip on your laptop's or desktop's motherboard drawing juice.
Intel's integrated graphics solutions work well for mainstream productivity and display including multidisplay tasks. Integrated graphics are not so great at handling demanding PC games, though.
While these integrated Intel graphics processors will let you play some recent games at low quality and resolution settings how well varies significantly by the game , you will definitely need a discrete graphics card from AMD or Nvidia to play 3D games at p, p, or 4K resolutions with the quality settings turned up. Nor are integrated solutions the best choice for tasks that demand GPU acceleration in addition to CPU muscle, such as certain specialized, heavy rendering and scientific applications.
Intel's Core X-Series desktop processor family , introduced in , is aimed at high-performance users like extreme gamers and video editors. The Core iX processor, for example, has eight cores and, thanks to its Hyper-Threading support, can process 16 threads simultaneously.
These CPUs are positioned as high-performance hardware for 3D rendering, mathematical calculations on large data sets, 4K video processing, game development, and to an extent high-end gaming with multiple video cards. There is no equivalent to the Core X-Series for laptops. At the distant other end of the spectrum are Intel's Core Y-series processors for laptops.
They are aimed at extremely thin-and-light ultraportable laptops. In recent generations, these chips, such as the Core iY, consume just 7 watts of power and generate very little heat, which can eliminate the need for a cooling fan.
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