Luckily for us, Photoshop makes this decision easy by failing to use multiple cores very effectively. Unfortunately, the number of cores is inversely proportional to the clock speed, so you’re going to have to make some sacrifices in your specs. The other aspect of CPUs, the number of cores, is a little less straightforward. However, the 3.5 GHz processor in my iMac has yet to meet its match. I found 2.6 GHz in a Macbook to be great for most things, but it slowed down when applying complex filters and using large brushes. Photoshop uses the CPU for the majority of its tasks, so aim for 3 GHz or higher for best results. Adobe recommends that you use a 2 GHz or faster CPU, but if you can afford better, it’s worth it. The number of cores is how many independent computation devices there are – so the more cores there are, the better a computer is at multitasking (or breaking up complex operations).
Clock speed, measured in GHz, is how many computations a core in the CPU can perform every second. There are two specs to a CPU that you need to know – the clock speed, and the number of cores. It’s also one of the more expensive components in a machine, but these days they really are a bargain.
It’s the little chip at the heart of everything that does the heavy lifting for almost every application you use, and Photoshop is no exception. The CPU, or Central Processing Unit, is the brain of your computer.
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