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Best Gaming CPUs for AM5 and LGA1851

Which Ryzen or Core Ultra chip to put under your graphics card, and why you probably don't need the most expensive one.

Updated September 22, 20268 min readBy the ComputerGear team

ComputerGear is reader-supported. When you buy through links on this page we may earn a commission from Amazon or eBay at no extra cost to you. We don't accept payment for placement, and we don't publish made-up test scores or prices — tiers ($ to $$$) show relative cost only.

For gaming, the CPU's job is to keep the graphics card fed. The higher your frame-rate target, the harder that job gets. At 4K the GPU is almost always the limit. At 1080p or 1440p with a high-refresh monitor, the CPU can decide how smooth things feel.

This guide covers the two current desktop platforms: AMD's AM5 (Ryzen 7000 and 9000 series) and Intel's LGA1851 (Core Ultra 200S). Both use DDR5 and PCIe 5.0. We ranked chips on their gaming reputation in independent reviews, platform longevity, cooling needs and how well they handle work beyond gaming. We don't publish our own frame-rate numbers. For game-by-game results, check the testing from outlets like Gamers Nexus, Hardware Unboxed and TechPowerUp.

AM5 vs LGA1851: which platform?

AM5 is the gaming favorite in 2026. AMD's X3D processors have led most gaming benchmarks, the platform has been around since 2022 with a track record of BIOS updates adding new CPU support, and there's a huge selection of motherboards. If gaming is your priority, AM5 is the default recommendation.

LGA1851 (Core Ultra 200S) is Intel's current platform. These chips are efficient and strong in productivity work, and have good integrated graphics and media engines, but reviewers found their gaming performance generally behind AMD's X3D chips and, in some titles, behind Intel's own previous generation at launch. Firmware and Windows updates have improved things since. Core Ultra is a reasonable choice for a mixed work and gaming build, especially if you value Intel's Quick Sync video encoding for editing.

If you're buying a new gaming PC from scratch, AM5 is the safer default. If you already know you want an Intel system, the Core Ultra 5 245K and Core Ultra 7 265K are the sensible choices.

The best gaming CPUs

PickRoleCostBest for
AMD Ryzen 7 9800X3DBest gaming CPU$$$High-refresh gaming with a high-end GPU
AMD Ryzen 7 7800X3DBest value X3D$$Most of the X3D gaming advantage at a lower price
AMD Ryzen 5 9600XBest budget$Mid-range GPUs and 1440p/60–144Hz gaming
AMD Ryzen 9 9950X3DBest for gaming + creating$$$Streamers, editors and developers who also game hard
Intel Core Ultra 7 265KBest Intel for mixed use$$Productivity-heavy builds that also game
Intel Core Ultra 5 245KBest Intel value$$Intel builders on a mid-range budget
Best gaming CPU

1. AMD Ryzen 7 9800X3D

$$$

Best for: High-refresh gaming with a high-end GPU

The 9800X3D is an eight-core, 16-thread AM5 chip with AMD's second-generation 3D V-Cache. The cache now sits under the cores, which allows higher clocks and better thermals than earlier X3D parts. Across independent testing, it's been one of the fastest gaming CPUs available. It's efficient enough for a good air cooler and supports overclocking. For a no-compromises gaming build, this is the chip.

What we like

  • Class-leading gaming performance
  • Second-gen V-Cache allows higher clocks
  • Efficient and easy to cool for its performance

Watch out for

  • Expensive for mid-range GPU builds
  • Eight cores trail 12–16 core chips in heavy creative work
Best value X3D

2. AMD Ryzen 7 7800X3D

$$

Best for: Most of the X3D gaming advantage at a lower price

The previous-generation X3D chip is still an excellent gaming CPU, with eight cores and 3D V-Cache that put it near the top of many game benchmarks. It runs cool and efficient. It's slower than the 9800X3D in productivity tasks and doesn't clock as high, but for gaming it often gets close when it's priced sensibly. Availability has been thinning as the 9000 series takes over, so compare prices.

What we like

  • Excellent gaming performance
  • Very efficient, and cool with modest coolers
  • Same AM5 socket and upgrade path

Watch out for

  • Weaker productivity than 9000-series chips
  • Stock and pricing vary as it's phased out
Best budget

3. AMD Ryzen 5 9600X

$

Best for: Mid-range GPUs and 1440p/60–144Hz gaming

A six-core, 12-thread Zen 5 chip that gives most mid-range builds all the CPU they need. It's efficient, runs on a modest cooler and sits on the AM5 platform, so you can drop in an X3D chip later. The Ryzen 5 7600 and 7600X are also good budget choices if they're discounted. Pair with an RTX 5060 Ti or RX 9060 XT class card.

What we like

  • Strong gaming performance for the money
  • Low power and easy to cool
  • Upgrade path on AM5

Watch out for

  • Six cores are less headroom for heavy multitasking
  • Not the choice for high-refresh CPU-bound play
Best for gaming + creating

4. AMD Ryzen 9 9950X3D

$$$

Best for: Streamers, editors and developers who also game hard

Sixteen cores with 3D V-Cache on one of its two core chiplets. The 9950X3D is built for people who want top gaming performance and top-tier multi-core performance in one chip. Its scheduling relies on AMD's chipset driver and Windows to steer games onto the cache-equipped cores, so keep both updated. For pure gaming the 9800X3D is the better value.

What we like

  • Top gaming and top multi-core in one chip
  • Great for rendering, compiling and encoding
  • AM5 platform longevity

Watch out for

  • Very expensive for gaming alone
  • Relies on correct driver scheduling
Best Intel for mixed use

5. Intel Core Ultra 7 265K

$$

Best for: Productivity-heavy builds that also game

Intel's 265K offers 20 cores (a mix of performance and efficiency cores) and strong multi-threaded performance for content creation, plus Intel's Quick Sync media engine, which video editors love. Gaming performance is good but generally trails AMD's X3D chips in independent testing. Make sure your LGA1851 board has current firmware.

What we like

  • Strong multi-threaded performance
  • Quick Sync for editing workflows
  • Efficient at idle and light loads

Watch out for

  • Gaming trails AMD X3D chips
  • LGA1851's future upgrade path is less certain than AM5's
Best Intel value

6. Intel Core Ultra 5 245K

$$

Best for: Intel builders on a mid-range budget

The 245K pairs six performance cores with eight efficiency cores for 14 cores in total. That makes it a capable all-rounder for gaming with a mid-range GPU and light creative work. Choose it if you want an Intel platform specifically. For a pure gaming build at the same budget, the Ryzen 5 9600X or a discounted 7800X3D usually makes more sense.

What we like

  • Good multi-threaded performance for the class
  • Integrated graphics and Quick Sync
  • Unlocked for tuning

Watch out for

  • Gaming value trails AMD at similar budgets
  • Needs a Z890 board to overclock

What is X3D, and is it worth it?

AMD's X3D chips stack a large extra layer of L3 cache on top of the processor. Games are very sensitive to how quickly the CPU can reach the data it needs, so that extra cache delivers big gains in many titles, especially simulation, strategy and competitive shooters at high frame rates.

It's worth it if you play at high refresh rates (144Hz and up), play CPU-heavy games (strategy, MMOs, sims, big open worlds), or pair a high-end GPU with a 1080p or 1440p monitor. It's less important if you play at 4K or with a mid-range GPU at 60Hz, where the GPU is the limit and a cheaper six-core performs almost the same.

How many cores do you need?

Cooling and memory for these CPUs

None of the chips here need exotic cooling for gaming. A good dual-tower air cooler such as the Thermalright Peerless Assassin handles the Ryzen 7 X3D chips and Core Ultra 7 comfortably. The 16-core chips benefit from a strong air cooler or a 280–360mm AIO under sustained all-core loads. See our best air coolers and best AIOs.

On AM5, 32GB of DDR5-6000 CL30 is the sweet spot. Core Ultra supports faster memory well. Either way, turn on the EXPO or XMP profile in the BIOS. Pick a motherboard from our best value AM5 and LGA1851 boards.

BIOS support: check before you boot

A newer CPU may need a BIOS update on an older board. Many AM5 boards include USB BIOS Flashback, which lets you update the BIOS from a USB stick without a compatible CPU installed. If you buy a board that's been on the shelf a while with the newest chip, this feature can save you a headache. See how to update BIOS safely.

Frequently asked questions

What is the best CPU for gaming in 2026?

AMD's Ryzen 7 9800X3D is widely regarded as the top gaming CPU, thanks to its 3D V-Cache. For most mid-range builds, a Ryzen 5 9600X or Ryzen 7 7800X3D delivers most of the experience for less.

Is Intel or AMD better for gaming?

In 2026, AMD's X3D chips lead most gaming benchmarks. Intel's Core Ultra 200S chips are strong for productivity and media work but generally trail X3D in games.

Do I need an X3D CPU?

Only if you play at high refresh rates, play CPU-heavy games, or pair a high-end GPU with a 1080p or 1440p monitor. At 4K or 60Hz with a mid-range GPU, a regular six-core chip performs nearly the same.

Will a new AM5 CPU work in my motherboard?

Usually, with a BIOS update. Check your board's CPU support list, and look for USB BIOS Flashback so you can update without a compatible CPU installed.

Do these CPUs include a cooler?

Most enthusiast chips, including the X3D and K-series parts, ship without a cooler. Budget a good air cooler or AIO. A quality dual-tower air cooler is enough for gaming on every chip listed here.

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