How Does a Processor Run Multiple Applications Very Well?
When purchasing a CPU that can simultaneously manage numerous applications and duties, it is crucial to bear in mind a few key factors.
We purchase personal computers to perform a diverse array of tasks, as opposed to a limited number of related tasks, in contrast to gaming consoles or smart TVs. But perhaps most significantly, we anticipate that our personal computers will execute numerous of these functions simultaneously. When purchasing a CPU that can simultaneously run multiple applications and duties, it is crucial to bear in mind a few key factors.
Lots of Cores
For an extended period, the terms “core” and “processor” were virtually interchangeable. A core, which is a fully functional processor, executes a “thread” of computer code. Multitasking was not truly feasible with single-core CPUs. The CPU’s rapid task switching caused it to appear as though all of the tasks were occurring simultaneously to a human. I am still in awe of the fact that I was able to play an MP3 in the background while composing a school report in Microsoft Word on a single core CPU. It is genuinely a feat of wizardry.
The “Good” Old Days
When I obtained my initial dual-core CPU, I was excited. This enabled my computer to allocate an entire processor to the video game I was playing, while the other core handled the operating system and other minor duties. As time progressed, the number of cores increased, and for an extended period, a quad-core CPU was considered the premier choice for high-performance household computers. More was required exclusively for professional workstations or web servers. The simultaneous operation of two software threads by a single processor is enabled by technologies such as Intel’s Hyperthreading. So, despite the fact that only four tangible cores exist, there were eight “cores” from the program’s perspective. A clever technique was employed to guarantee that the processor was utilized to the fullest extent.
Today, it is common to have six or eight centers. Intel, the world’s largest manufacturer of desktop and laptop CPUs, employs a hybrid CPU design that comprises smaller, energy-efficient models and larger, high-performance cores. These “P” and “E” cores (for performance and efficiency, respectively) enable your computer to effortlessly manage numerous tasks and maintain a cool and silent environment while performing light tasks. Since the existence of numerous minor cores renders hyperthreading unnecessary, it is being phased out.
So How Many Cores Is Good?
It is crucial to have a foundation in this area, as it is evident that a computer that can simultaneously operate a Plex server in the background while allowing you to work or play in the foreground requires spare CPU cores. In the same way, video game streamers can profit from the utilization of additional cores to operate their streaming software without compromising the performance of their games.
What is the number of cores? A decent general starting point for heavy multitasking systems is to have at least six performance cores with a sprinkling of efficiency cores on Intel systems. AMD systems that lack this design should strive for a minimum of eight processors. This should be sufficient for intensive mainstream multitasking.
Large Amounts of Cache
The CPU die’s cache memory is a tiny, quick memory that serves as a temporary storage space for data and instructions pending core processing. Although some CPU tasks are not cache-sensitive, having additional cache will generally improve the CPU’s performance. Side-by-side cache becomes especially critical when one has numerous CPU cores and intends to execute numerous applications. In particular, the L3 shared cache, which is accessible to all processors, can be particularly beneficial for multitasking in applications that frequently require memory access.
In terms of the precise quantity of L3 cache, this is akin to inquiring about the appropriate amount of RAM. The response will vary based on the time of reading and the extent of the multitasking burden. At the time of this writing, mainstream CPUs provide over 20MB of L3 cache, and this number increases as the product layers increase. Even higher-end CPUs may have a memory capacity of approximately 100MB or more. If you are compelled to choose between two CPUs that are otherwise comparable, the one with a greater amount of L3 cache is likely the superior choice. In my opinion, it would be worth sacrificing one or two cores in exchange for a doubling of cache capacity.
Virtualization Support
While cores and cache are the primary specifications to evaluate, it may be beneficial to choose a CPU that provides hardware acceleration for virtualization. The reason for this is that a significant number of individuals require the virtualization of entire computers to execute software or complete specific tasks in order to multitask. The majority of contemporary CPUs, but not all, are equipped with virtualization acceleration. Such as AMD-V for AMD CPUs or VT-x for Intel systems.
If you intend to operate one or more virtual machines on your computer, it is crucial to verify that the virtualization software you intend to use is compatible with the specific brand and model of the CPU you are considering. Additionally, it is advisable to verify that the CPU supports virtualization features.
