The CPU Naming Scam Nobody Warned You About

7840HS, 8845HS, Ryzen 7 260: One Chip, Three Names, Four Prices

You open an e-commerce page and search for “thin-and-light laptop 16GB 1TB.” Two machines sit side by side. The spec sheets list roughly the same things. One says Ryzen 7 7840HS. The other says Ryzen 7 8845HS. The second one costs 300 yuan more.

You click into the details. Architecture: Zen 4. Integrated graphics: Radeon 780M, 12CU. Process: 4nm. Cores and threads: 8 cores, 16 threads. You scroll to the bottom. The L3 cache is the same: 16MB.

You go back to the search bar and type “difference between 8845HS and 7840HS.” The first result is a forum post: “Is the 8845HS just a rebranded 7840HS?” A reply says, “They fixed some bugs, the NPU has a little more compute, otherwise basically the same.” Another reply: “But the 8845HS costs more wholesale.”

You close the page. You look at the 300-yuan gap. You do not know whether to pay for bug fixes.

This is buying a thin-and-light laptop in 2024. It is also just the entrance to the 7840H universe.

1. The 7840H Universe: One Chip, Infinite Nesting Dolls

In 2023, AMD launched the Ryzen 7040 series mobile processors. The Ryzen 7 7840HS became one of the hottest thin-and-light laptop chips of the year. It had 8 Zen 4 cores, Radeon 780M integrated graphics, good efficiency, and enough integrated graphics for light gaming. It sold too well for AMD to cut the price.

So we got this chain:

Ryzen 7 260 = 8845HS ≈ 8840HS = 7840HS = 7840H

Ryzen 7 255 = 8745H(S) = underclocked 8845HS

Ryzen 9 270 = 8945HS = 7940HS = 7940H = hand-picked overclocked 7840H

7840U = hand-picked low-voltage 7840H

Z1 Extreme is also derived from the 7840U

All of these models are 8×Zen 4 + Radeon 780M (12CU RDNA3). As one forum user put it: “The 8845 actually fixed some of the 7840’s bugs, so you can’t strictly use an equals sign. By the same logic, the R7 260 may have fixed bugs too, but no products seem to have surfaced yet.”

The 7840HS you bought for 3,000 yuan and the 8845HS your neighbor bought for 4,000 yuan are close enough in blood to call each other cousins.

The low-end Ryzen 200 series is stranger. The Ryzen 5 220 is 2×Zen 4 + 4×Zen 4c. The Ryzen 3 210 is 1×Zen 4 + 3×Zen 4c. AMD has started using big.LITTLE on low-end mobile, but the naming still follows a numeric sequence. Without the spec sheet, you cannot tell how many big cores and small cores the chip has.

2. Qualcomm: From “Gen” to “Elite” to “Fifth Generation”

Qualcomm’s naming used to be simple: 835, 845, 855, 865. Bigger number, stronger chip. Then came 888. Then the “Snapdragon 8 Gen 1” system. The first three generations, 8 Gen 1, 8 Gen 2, and 8 Gen 3, at least looked regular.

For the fourth generation, Qualcomm did not launch a “Snapdragon 8 Gen 4.” It launched the Snapdragon 8 Elite, or “Snapdragon 8 Supreme Edition” in Chinese.

Just as people were getting used to “Elite,” Qualcomm named the next flagship the “Fifth-Generation Snapdragon 8 Supreme Edition.”

What is your first reaction? How does it relate to the previous “Snapdragon 8 Supreme Edition”? Is it an upgrade or a rename? Does “fifth generation” count from 8 Gen 1 or from 8 Elite?

Qualcomm did not explain.

The sub-flagships are messy too. The Snapdragon 8s Gen 3 and 7+ Gen 3 make it hard to judge performance at a glance. On the PC side, the Snapdragon X Elite, X Plus, and X1E-84-100 have been called confusing. Some jokes say Qualcomm hired Microsoft’s renaming department.

3. ARM: Cortex Was Used for Twenty Years, Then Dropped

ARM’s CPU cores were called Cortex for more than twenty years. From Cortex-A to Cortex-X, they covered phones, tablets, PCs, servers, cars, and IoT. You may not know A78 from A710 or X4 from X3, but you knew they were all Cortex.

In 2025, ARM announced it was dropping the Cortex name. The new brands are split by use case:

• Smartphones: Lumex

• PC and notebook: Niva

• Microcontrollers: Orbis

• Automotive: Zena

• Servers: Neoverse (kept)

It also added suffixes like Ultra, Premium, Pro, Nano, and Pico. Future ARM cores might be called “Lumex Ultra Gen 1,” “Orbis Pico 1,” or “Niva Premium.”

You spent years learning Cortex-X4, A720, and A520. Now you have to learn a new system. Developers have it worse. Documentation must be rewritten. Code comments need updates. Forum posts need prefixes to separate old and new names.

4. Intel: Core, Core 2, Core Ultra

Intel’s naming history is brand marketing.

In early 2006, Intel released Core Duo and Core Solo on the older P6 architecture. Later that year, chips on the new Core microarchitecture were named “Core 2.” So “the first Core” and “the first Core microarchitecture” became two different things. Buyers stayed confused for years.

Mobile is the same. A Core i5-13500HX looks like 13th generation but may use 12th-generation architecture. If you do not check the core codename, the number will mislead you.

In the Core Ultra era, Ultra 5, Ultra 7, and Ultra 9 come with suffixes like 200V, 200S, and 200H. They try to separate product lines. But “Ultra” is tangled with “Xth generation,” so you still have to decode.

5. Nvidia: A Laptop 4090 Is Not a Desktop 4090

The clearest example is the RTX 4090 mobile. Its performance is about equal to a desktop RTX 4080, and in some cases lower. Because it is called “4090,” many buyers think it is in the same tier as a desktop 4090.

The laptop RTX 4090 and desktop RTX 4090 are not the same chip. The performance gap is large. A 20,000-yuan “4090 laptop” may have graphics performance equal to a 10,000-yuan “4080 desktop.”

Nvidia has used this same-name, unequal-performance strategy for years.

6. MediaTek and Samsung: Rename and Relaunch

MediaTek renamed its older Dimensity 700 and 810 to Dimensity 6020 and 6080 and put them back on the market. When you see “Dimensity 6020,” you might think new architecture. It is old wine in a new bottle.

Samsung’s Exynos brand has a reputation problem. Reports have repeatedly said it may be renamed to cut the negative image. Whether it happens or not, “change the name and start over” is common in chips.

7. A Day in the Life of Lao Zhang, a Channel Dealer

Lao Zhang has sold laptops in Huaqiangbei for eight years.

In the morning, a manufacturer sales rep messages him: “A new batch of 8845HS machines arrived. Price is 300 yuan higher than the 7840HS.”

Lao Zhang asks, “What’s the difference?”

The rep says, “They fixed some bugs. The NPU has a little more compute.”

Lao Zhang opens the spec sheet and looks for five minutes. 8 cores, 16 threads, 16MB L3 cache, Radeon 780M, 12CU. He pulls up the 7840HS sheet and compares them. He is silent for thirty seconds.

Then he replies: “Fine. I won’t cut the price on my 7840HS machines for now.”

In the afternoon, a customer asks, “Boss, which is better, the 8845HS or the 7840HS?”

Lao Zhang says, “Pretty much the same. The 8845HS is a bit newer.”

The customer asks, “Then why is it 300 more?”

Lao Zhang thinks. “It’s a bit newer.”

The customer leaves. Lao Zhang goes back to his phone. He sees a news item: “AMD launches Ryzen 200 series; Ryzen 7 260 features Zen 4 architecture.” He clicks it. Core specs: 8 cores, 16 threads, Radeon 780M, 12CU.

He closes the news and pours himself a cup of tea.

8. How to Read Chip Names

Do not just look at the name.

Step one: search the architecture codename. Zen 3, Zen 4, Zen 5. Raptor Lake, Meteor Lake, Lunar Lake. Phoenix, Hawk Point, Strix Point. The codename tells you more about the generation than the product name.

Step two: check core specs. How many big cores and small cores? How many cores and threads? What frequency? How large is the L3 cache? How many CUs does the integrated graphics have? How much NPU compute? These decide performance.

Step three: check power and cooling. The same chip can perform very differently under different power limits. A 7840HS in a laptop and a 7840HS in a mini PC may not be the same experience.

Step four: read real reviews. Do not trust the model number. Look at game frame rates, render times, and battery life.

Step five: remember one sentence. Same lineage does not mean same performance. A new name does not mean a new generation.

9. See You Tomorrow

Which one did you buy?

Maybe you chose the cheaper 7840HS because you know they are close. Maybe you chose the more expensive 8845HS because you want “new, not old.” Maybe you closed the page and decided to wait another year.

Next time you see the Ryzen 7 260 and 8845HS, you will not be surprised. They may be the same soul in different vests.

Next time you see the “Fifth-Generation Snapdragon 8 Supreme Edition,” you will not be confused. Qualcomm just jumped between “Gen” and “Elite” again.

You might even look forward to the next flagship name.

“Sixth-Generation Snapdragon 8 Supreme Edition”? “Snapdragon 8 Ultra Elite”? “Snapdragon 9 Gen 1”?

Next year, AMD will probably rename the 7840HS again. You will see it on a spec sheet and check the core count before believing anything.