Here’s something laptop sellers really don’t advertise: the processor name you see on the box — like “Intel Core i5” or “AMD Ryzen 5” — doesn’t actually tell you how powerful that chip is. Not even close sometimes.
Intel and AMD make different versions of what they call the same processor family. There’s a version built for performance, with more power to burn, and there’s a version designed to sip battery in a thin laptop. Both can carry the same marketing name — “Core i5” or “Ryzen 5” — right on the box. But mobile CPUs vary significantly by TDP (Thermal Design Power), which is basically how much power the chip is allowed to use. A laptop chip with a low TDP can perform similarly to a chip from a tier below it entirely.
So you could be comparing two laptops side by side, both saying “Core i5,” and one could genuinely be much faster than the other. Manufacturers aren’t required to spell that out on the box.
The full model number — not just the brand name — is your real clue. Higher numbers after the series name generally correlate to better performance, and the generation number (that first digit or two in the model number) matters a lot too. An i5-1235U and an i5-12600H are both marketed as “12th gen Core i5” chips, but that U at the end means ultra-low power — it’s built for battery life, not speed. AMD uses a similar suffix system: U chips are low-power, while H and HS chips are higher-performance.
Note: Intel has also started renaming newer chips (like “Core 5” and “Core 7” instead of “i5” and “i7”), so if you’re shopping for a 2024 or newer laptop, you may see different labeling — the same logic still applies.
Before you buy any laptop, look up the exact model number of the processor — not just the brand name. Search that specific model number and check what TDP it runs at and how it benchmarks in real tests. That takes about two minutes and can save you from a machine that crawls through the exact tasks you bought it for.