Intel Core 8th to 12th Gen explained for laptop buyers

Why the generation matters more than i5 or i7

The i3, i5 and i7 labels tell you where a chip sat in Intel's range in its own year. The generation tells you how far the whole range had moved on. In most everyday work, an 11th Gen Core i5 is a faster and more capable laptop than an 8th Gen Core i7, with better graphics and newer connections as well. When you read a lot sheet, the generation is the first number to find.

It sits at the start of the model number. In a Core i5-8350U it is the 8; in a Core i7-1165G7 it is the 11. The digits after it identify the particular chip, and the letters at the end describe its type, which the last section of this guide explains.

8th Gen: four cores in thin laptops

The 8th Gen, launched in autumn 2017, is where business laptops took their biggest single step in years. Until then, the low-power U-series chips used in thin laptops had two cores. The Core i5-8250U and i5-8350U doubled that to four cores and eight threads in the same power budget, which is why an 8th Gen EliteBook or Latitude still feels usable today when a 7th Gen one does not.

There are two waves within the 8th Gen. The first, known as Kaby Lake Refresh, includes the 8250U, 8350U and 8650U. The second, Whiskey Lake, arrived in the second half of 2018 with the 8265U, 8365U and 8665U and brought small gains in speed. Larger workstations such as HP ZBooks and Dell Precisions used 8th Gen H-series chips instead, such as the six-core i7-8850H.

The 8th Gen also marks the line for Windows 11. Microsoft's list of supported processors starts here, so for most buyers an 8th Gen machine is the oldest worth reselling with a current operating system.

9th and 10th Gen

There were no 9th Gen U-series chips. Intel's 9th Gen in laptops was H-series only, used in mobile workstations such as the ZBook 15 G6 with its i7-9750H, i7-9850H or i9-9880H. If a sheet lists a thin business laptop as 9th Gen, check the processor column: it is a workstation, a desktop, or a mistake.

The 10th Gen is really two families sold under one name. Comet Lake, built on Intel's older 14nm process, includes the Core i5-10210U, i5-10310U, i7-10610U and the six-core i7-10810U, plus H-series chips such as the i7-10850H for workstations. Ice Lake, built on 10nm, has model numbers such as i5-1035G1 and i7-1065G7. The G and the digit after it describe the graphics: G1 has basic UHD graphics, while G4 and G7 have Intel's Iris Plus, a clear step up.

Comet Lake is the more common of the two in ex-corporate laptops. For office work the families are close; Ice Lake is better at graphics, and Comet Lake can be quicker in long processor-heavy tasks. Price them on the specific chip and the rest of the specification, not on the shared 10th Gen label.

11th Gen: graphics and Thunderbolt 4

The 11th Gen, Tiger Lake, arrived in autumn 2020 and is the generation many buyers now ask for by name. Chips such as the Core i5-1135G7, i5-1145G7, i7-1165G7 and i7-1185G7 kept four cores but ran them faster, and brought Intel Iris Xe graphics, a large step over anything Intel had put in a business laptop before. They also support Thunderbolt 4 and faster PCIe 4.0 storage.

One detail catches people out. Iris Xe needs memory running in two channels. A G7 machine with a single memory module, or with unevenly matched memory, reports its graphics as Intel UHD and performs like it. Two matched modules, or a model with soldered dual-channel memory, gives the full Iris Xe performance. If graphics matter to your customer, check the memory configuration as well as the processor.

The 11th Gen H-series, such as the eight-core i7-11800H and i7-11850H, powers workstations like the ZBook Fury G8 and Precision 7560. These are a different class of machine from the thin U-series laptops and should be priced as such.

12th Gen: performance and efficient cores

The 12th Gen, Alder Lake, reached laptops in early 2022 and changed the design. Each chip combines performance cores for demanding work with smaller efficient cores for background tasks. A Core i5-1235U has two performance cores and eight efficient cores, twelve threads in all; a Core i5-1240P has four performance cores and eight efficient cores, sixteen threads. Windows 11 knows how to share work between the two kinds of core, which is one reason these machines are best sold with it.

Alder Lake laptops use DDR4 or DDR5 memory depending on the model, and many have it soldered. That matters if you plan to sell memory upgrades: check the model's specification before assuming a slot is free, or which type of module it takes. In multi-core work a 12th Gen i5 is a substantial step above an 11th Gen i5; in single-threaded office work the difference is smaller than the core count suggests.

Reading a model number on a lot sheet

The letters after the number describe the type of chip. U means a low-power chip for thin laptops, typically 15 watts. H means a high-performance chip for workstations and larger machines, typically 45 watts. P, new with the 12th Gen, sits between the two at about 28 watts. G followed by a digit, used on 10th Gen Ice Lake and on the 11th Gen, gives the graphics level, G7 being the highest. Y marks very low-power chips found in a few fanless and detachable designs.

vPro is not in the name, but it follows a pattern. Chips such as the i5-8350U, i5-8365U, i5-10310U, i7-10610U, i5-1145G7, i7-1185G7, i5-1245U and i7-1265U are the vPro-capable versions, and whether a laptop actually has vPro also depends on the model. Corporate buyers often ask for it. It can also mean a machine was once enrolled in a company's management system, which the guide on BIOS passwords and management locks covers.

If a sheet says only Core i5, with no model number, ask for it before you buy. Two laptops described that way can be five years apart.