What Do Those CPU Names Mean? Decoding Intel, AMD, Apple and Snapdragon

Processor names look like someone fell asleep on a keyboard. Core Ultra 7 155H. Ryzen 5 7530U. Snapdragon X Elite. Yet each piece of those names means something, and once you can read them, you can tell a strong chip from a weak one without looking up a single benchmark.

There are four families worth knowing. We’ll take them in turn.

First, the rule that applies to all of them

The big name on the sticker, whether it’s i5, Ryzen 7 or Ultra 9, is a tier. It tells you where the chip sits within its own generation and its own power class. It doesn’t tell you how fast it is compared with chips from other years or other classes.

Two things matter more than the tier.

The generation: how new the design is.
The power class: whether the chip was built for thin laptops and long battery life, or for raw performance.

A new mid-tier chip usually beats an old top-tier one. Keep that in mind and the rest is detail.

Intel

Intel currently uses two naming styles, because it changed its branding in late 2023.

The older style: Core i5-1335U

Core i5 is the tier. i3 is basic, i5 is mainstream, i7 is higher and i9 is the top.
13 is the generation. A chip starting with 12 is one generation older, and one starting with 11 is older still.
35 is the position within that generation. Higher is a bit better.
U is the power class.

The newer style: Core Ultra 7 155H

Core Ultra 7 is the tier. It runs 5, 7, 9, in the same order as before.
1 is the series, which works like the generation. Series 2 chips start with a 2, as in Core Ultra 7 258V, and so on.
55 is the position within the series.
H is the power class.

You’ll also see plain “Core 5” or “Core 7” without the word Ultra. Those are simpler chips based on older designs. They’re fine for everyday use, but they aren’t the same as Core Ultra.

Intel’s letters

U: low power. Thin and light laptops, good battery life, fine for everyday work.
V: a newer low-power design focused on efficiency and battery life, with capable built-in graphics.
P: a middle class found on some older thin laptops.
H: high performance. For editing, engineering and gaming. Uses more power and needs better cooling.
HX: the fastest. Found in thick, powerful gaming and workstation laptops.

At the bottom of the range, chips called N100, N150, N200 or older names like Celeron and Pentium are built for the cheapest laptops. They handle a browser and documents. They’ll struggle with much more.

AMD

AMD also has an older and a newer style.

The older style: Ryzen 5 7530U

AMD’s four-digit numbers hide a trap, so it’s worth learning this one.

Ryzen 5 is the tier. 3 is basic, 5 is mainstream, 7 is higher, 9 is the top.
The first digit, 7, is the model year. It tells you when the chip was sold, not how new the technology is.
The second digit, 5, is the tier again.
The third digit, 3, is the one that matters. It tells you the generation of the design inside. A 3 means an older design called Zen 3, a 4 means Zen 4, and so on.
U is the power class.

So a Ryzen 5 7530U and a Ryzen 5 7540U look almost the same, but the second has a newer and noticeably better design inside. And a “7000 series” chip with a 2 as its third digit, like the Ryzen 5 7520U, uses a design that was already several years old when it launched. That’s how a laptop can carry a new-sounding number and an old chip. When you’re comparing AMD laptops, look at the third digit.

The newer style: Ryzen AI 7 350

AMD’s recent chips are called Ryzen AI, followed by a tier of 5, 7 or 9 and a three-digit number. The first digit of that number is the series, so the 300s came first and higher series are newer. These are current designs, so the old third-digit trap doesn’t apply.

AMD’s letters

U: low power, for thin laptops.
HS: high performance in a slimmer design.
H and HX: high performance and the highest, for gaming and heavy work.

Apple

Apple’s naming is refreshingly simple.

M followed by a number is the generation: M1, M2, M3, M4 and so on. Higher is newer.
No extra word means the standard chip, found in the MacBook Air and base MacBook Pro.
Pro is faster, with more cores, for demanding work.
Max is faster again, especially in graphics, for heavy video and 3D work.

The trick is the same as everywhere else. A newer standard chip can match or beat an older Pro one in everyday tasks. And for browsing, documents and video calls, even the oldest M-series chips are still quick.

Qualcomm Snapdragon

Snapdragon chips for Windows laptops come from the same family of technology as phone processors, and their strength is battery life.

Snapdragon X is the entry level.
Snapdragon X Plus is the middle.
Snapdragon X Elite is the top.

One caution. These chips work differently inside from Intel and AMD ones, so Windows has to translate some programs to run on them. Most everyday apps work well. Some games, especially those with anti-cheat software, and some older or specialist programs and devices don’t. If you rely on a particular program, check that it supports “Windows on Arm” before you buy.

A cheat sheet

If the name has…	It means…
U or V (Intel), U (AMD)	Built for battery life and thin designs
H, HS or HX	Built for performance. Heavier, hungrier
A higher generation or series number	A newer design, usually better all round
N-series, Celeron, Pentium, Athlon	Basic tasks only
Snapdragon X	Long battery life. Check your apps are compatible
Apple M with Pro or Max	More power than the standard chip of the same generation

What should you look for?

Everyday use: any recent U-class Intel or AMD chip at the 5 tier, a Snapdragon X, or any Apple M chip.
Heavier work and many tasks at once: tier 7, or an H-class chip.
Gaming and video editing: H or HX class, paired with a dedicated graphics card. On a Mac, a Pro or Max chip.

Remember that the processor is only one part. A good chip with too little memory will still feel slow, which is the argument we make in It’s Time to Stop Selling 8GB Laptops. For our current processor recommendations, see the CPUs page, and to see how the chip fits with everything else, read How to Read a Laptop Spec Sheet.