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This is usually held when processing typical low-to-mid level workloads. The base clock speed of a CPU refers to the frequency that all cores will maintain as a baseline. You can find more detailed information about IPC here. One of the most common reasons why a CPU with a higher clock speed may be outperformed by a newer generation processor of a lower frequency is because of architectural improvements that result in an IPC gain. Other factors like the number of cores, its cache sizes, and the internal architecture of the CPU also play a key role in overall performance. However, clock speeds are only one aspect of a CPU’s speed. Now, performing a simple operation might take just take a couple of cycles/ticks, while a more complex operation can take up hundreds or thousands. So, a CPU with a 4GHz clock speed is capable of performing 4 billion ticks in a single second. The maximum frequency of these pulses is measured in Hertz (Hz), with modern-day CPUs performing in the Gigahertz range (each gigahertz reflecting a billion cycles per second). The faster it can ‘tick,’ the faster it can get work done in a set amount of time.Įach one of these cycles consists of a pulse of either an on or off switching of transistors, which is synchronized by an internal oscillator (internal clock). What Are CPU Clock Speeds?įirst things first: What are clock speeds? Are they an important metric for comparison, or do they hardly matter in terms of practical performance?Ī CPU’s speed is measured by its internal clock in ‘ticks’ or clock cycles. We’ll explore these questions, and more, in this article, and provide you with guidance on what clock metrics are important for your specific workload. Of course, these new features bring a lot of benefits as well, but for a new buyer it raises a lot of questions first:įor example, what are base and boost clock speeds? Is it better to shop for a CPU with a higher base clock speed or a higher boost clock speed? Which workloads depend more on either one or the other? To maintain sustained boosts, you need premium cooling solutions (air/liquid) that can dissipate heat fast enough. Just long enough so manufacturers can advertise 5+GHz clock speeds on the CPU’s packaging and potentially mislead the unsuspecting buyer. Several factors can affect a CPU’s boost clock:Īnd even if your processor does boost to its advertised boost clocks, it might very well be that it holds this frequency only for a couple of milliseconds here and there. Manufacturers guarantee a boost clock only when a processor isn’t thermally or power-limited. They have multiple cores and threads, and they can overclock and throttle their frequency automatically depending on things like thermals and power delivery. Modern CPUs now have base clocks and boost clocks. Gone are the days when CPUs had fixed clock speeds, and comparing different models from various manufacturers was as easy as ranking them by their frequency. Other Factors to Take Into Consideration.Which Workloads benefit more from higher Boost Clock Speeds?.Which Workloads Are Dependent on Base Clock Speed?.
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Related: How to Prevent Computer Overheating and Keep Your PC Cool Is Overclocking a GPU Difficult?Īs with most things, it doesn't have to be, so long as you take your time and watch or read some tutorials first. But, it may not be stable at all times, and your GPU may throttle down because of the increased temperatures if you don't have a good cooling system in place. Yes, GPU overclocking can give you a 10-15 percent gaming performance boost. Always research your specific GPU specs and limits before overclocking. Please note that this is general advice and MakeUseOf is not responsible for any hardware damage that comes from overclocking. Most modern GPUs will cut out before anything truly awful happens. This is usually a sign that you went overboard in overclocking your GPU, so pulling back the clock speed a notch should fix this up.