Buying Guide

The Best High-End CPUs for Gaming

Five flagship processors from AMD and Intel, compared on cache, boost clock and the cooling each one needs.

By , PC Hardware Editor

12 min read5 products evaluated

PC components laid out on a workbench ready for a build
Illustrative image

At the high end, AMD's X3D chips lead for gaming because of their large L3 caches, while Intel's flagships offer more cores and higher boost clocks.

We compared cache, boost, cores and rated power from AMD and Intel specifications; we did not benchmark these processors. Every chip here needs a strong aftermarket cooler.

Quick Picks

Which of the 5 picks to look at first. Tap a name for the full analysis.

  1. Best High-End Gaming Chip

    AMD Ryzen 7 9850X3D

    A 5.6GHz boost with 96MB of L3.

    Best for: Pure gaming at high refresh rates.

    Check price for AMD Ryzen 7 9850X3D on Amazon (opens in a new tab)
  2. Best Value Flagship

    AMD Ryzen 7 9800X3D

    96MB of L3 on eight Zen 5 cores.

    Best for: High-end gaming for less.

    Check price for AMD Ryzen 7 9800X3D on Amazon (opens in a new tab)
  3. Largest Game Cache

    AMD Ryzen 9 9950X3D

    The largest L3 cache here (128MB).

    Best for: Games that are limited by the CPU at high frame rates.

    Check price for AMD Ryzen 9 9950X3D on Amazon (opens in a new tab)
  4. Best Intel Flagship

    Intel Core Ultra 9 285K

    24 cores with a 5.7GHz boost on LGA1851.

    Best for: New Intel high-end builds.

    Check price for Intel Core Ultra 9 285K on Amazon (opens in a new tab)
  5. Highest Boost Clock

    Intel Core i9-14900K

    A 6.0GHz listed boost.

    Best for: Existing Z690 and Z790 boards.

    Check price for Intel Core i9-14900K on Amazon (opens in a new tab)

Our Picks

Best High-End Gaming Chip1 of 5

AMD Ryzen 7 9850X3D

The Ryzen 7 9850X3D is a higher-clocked version of the eight-core X3D design.

Best for

Pure gaming at high refresh rates.

Skip if

Look at the others if this bothers you: no cooler in the box.
AMD Ryzen 7 9850X3D

Why we like it

It targets players who want the most gaming headroom AMD offers in an eight-core chip. It is AMD's second-generation X3D eight-core chip with 96MB of L3 cache. On L3 cache it ties with the Ryzen 7 9800X3D at 96MB.

On boost clock it sits mid-pack at 5.6GHz: the Core i9-14900K offers 6GHz, and the Ryzen 7 9800X3D comes in at 5.2GHz. It matches the Ryzen 7 9800X3D on core count (8 cores). It shares an AM5 socket with the Ryzen 7 9800X3D and Ryzen 9 9950X3D; the Core i9-14900K goes with an LGA1700 socket.

It needs an AM5 board (A620, B650, B850, X670 or X870 series) and DDR5 memory; a 600-series board may need a BIOS update first, so check the maker's CPU support list for the minimum version. Its price falls between the Core i9-14900K and the Core Ultra 9 285K, based on our last check.

Key specs

L3 cache
96MB
Max boost
5.6GHz
Cores / threads
8 cores
Rated power
120W
Threads
16
Socket
AM5
Memory
DDR5
Cooler in box
No
Integrated graphics
Yes

Pros

  • 96MB of L3 cache from 3D V-Cache
  • 5.6GHz maximum boost
  • Integrated graphics for display output without a graphics card
  • Higher-clocked take on the 9800X3D design

Cons

  • No cooler in the box
  • Costs more than the Ryzen 7 9800X3D at the time of writing

Best Value Flagship2 of 5

AMD Ryzen 7 9800X3D

The Ryzen 7 9800X3D pairs AMD's 3D V-Cache with eight Zen 5 cores, and games that lean on cache respond to it more than to extra cores.

Best for

High-end gaming for less.

Skip if

Pass on it if no cooler in the box rules it out for your setup.
AMD Ryzen 7 9800X3D

Why we like it

It is the chip to pair with a high-end graphics card when the CPU would otherwise hold frame rates back. Its 5.2GHz boost clock is the lowest in this group; the Core i9-14900K leads at 6GHz. On core count it ties with the Ryzen 7 9850X3D at 8 cores.

Like the Ryzen 7 9850X3D and Ryzen 9 9950X3D, it has an AM5 socket, while the Core Ultra 9 285K uses an LGA1851 socket. You also get second-generation 3D V-Cache placed under the cores and an unlocked multiplier, a first for AMD's X3D chips. It needs an AM5 board (A620, B650, B850, X670 or X870 series) and DDR5 memory; a 600-series board may need a BIOS update first, so check the maker's CPU support list for the minimum version.

Budget for a dual-tower air cooler or a 240mm-plus AIO, since none is included. No other pick here cost less at our last price check, and the Core i9-14900K was closest.

Key specs

L3 cache
96MB
Max boost
5.2GHz
Cores / threads
8 cores
Rated power
120W
Threads
16
Socket
AM5
Memory
DDR5
Cooler in box
No
Integrated graphics
Yes

Pros

  • 96MB of L3 cache from 3D V-Cache
  • Integrated graphics for display output without a graphics card
  • Second-generation 3D V-Cache placed under the cores
  • Unlocked multiplier, a first for AMD's X3D chips

Cons

  • No cooler in the box
  • Boost clock trails the Core i9-14900K (6GHz)
  • Core count trails the Core Ultra 9 285K (24 cores)

The catch

Boost clock is its weakest area, and the Core i9-14900K covers it better at 6GHz.

Largest Game Cache3 of 5

AMD Ryzen 9 9950X3D

The Ryzen 9 9950X3D adds a second eight-core die to the X3D formula, giving 16 cores for work while keeping 3D V-Cache for games.

Best for

Games that are limited by the CPU at high frame rates.

Skip if

Worth skipping when 170W rating calls for a large air cooler or a 280mm-plus AIO is a problem.
AMD Ryzen 9 9950X3D

Why we like it

It suits a single machine that must game and render. Its 128MB L3 cache is the largest here; the Ryzen 7 9850X3D comes next at 96MB. On boost clock it ties with the Core Ultra 9 285K at 5.7GHz.

Its 16 cores core count ranks third of 5 here, behind the Core Ultra 9 285K (24 cores) and ahead of the Ryzen 7 9800X3D (8 cores). Its 170W rated power is the highest in this group; the Ryzen 7 9850X3D leads at 120W. It shares an AM5 socket with the Ryzen 7 9850X3D and Ryzen 7 9800X3D; the Core i9-14900K goes with an LGA1700 socket.

It also offers a design aimed at both games and content creation. It was the highest-priced of the 5 picks at the time of writing, so the case for it rests on what it adds over the Core Ultra 9 285K and the rest.

Key specs

L3 cache
128MB
Max boost
5.7GHz
Cores / threads
16 cores
Rated power
170W
Threads
32
Socket
AM5
Memory
DDR5
Cooler in box
No
Integrated graphics
Yes

Pros

  • 128MB of L3 cache from 3D V-Cache
  • 5.7GHz maximum boost
  • 16 cores for encoding and background work
  • Integrated graphics for display output without a graphics card

Cons

  • 170W rating calls for a large air cooler or a 280mm-plus AIO
  • No cooler in the box
  • Rated power trails the Ryzen 7 9850X3D (120W)

The catch

The trade-off is rated power; for more, the Ryzen 7 9850X3D offers 120W.

Best Intel Flagship4 of 5

Intel Core Ultra 9 285K

The Core Ultra 9 285K is Intel's flagship on LGA1851, with 24 cores and high single-threaded clocks.

Best for

New Intel high-end builds.

Skip if

Skip it if this is a deal-breaker for you: no cooler in the box.
Intel Core Ultra 9 285K

Why we like it

It suits competitive players who also stream from the same machine. It matches the Core i9-14900K on L3 cache (36MB). It matches the Ryzen 9 9950X3D on boost clock (5.7GHz).

On rated power it ties with the Core i9-14900K at 125W. It is the only pick here with an LGA1851 socket; the Ryzen 7 9850X3D has an AM5 socket instead. It also comes with 8 performance and 16 efficient cores and a built-in NPU for AI features.

It needs an LGA1851 board (Intel 800-series chipset) and DDR5 memory; LGA1700 boards and coolers without an LGA1851 mounting kit will not fit. Budget for a dual-tower air cooler or a 240mm-plus AIO, since none is included. When we checked, only the Ryzen 7 9850X3D and cheaper picks cost less, and the Ryzen 9 9950X3D cost more.

Key specs

L3 cache
36MB
Max boost
5.7GHz
Cores / threads
24 cores
Rated power
125W
Threads
24
Socket
LGA1851
Memory
DDR5
Cooler in box
No
Integrated graphics
Yes

Pros

  • 5.7GHz maximum boost
  • 24 cores for encoding and background work
  • Integrated graphics for display output without a graphics card
  • 8 performance and 16 efficient cores

Cons

  • No cooler in the box
  • Costs more than the Ryzen 7 9800X3D at the time of writing

Highest Boost Clock5 of 5

Intel Core i9-14900K

The Core i9-14900K is the last LGA1700 flagship with a 6.0GHz boost clock.

Best for

Existing Z690 and Z790 boards.

Skip if

Pass on it if no cooler in the box rules it out for your setup.
Intel Core i9-14900K

Why we like it

Check your board has the latest BIOS for Intel's stability microcode. On L3 cache it ties with the Core Ultra 9 285K at 36MB. Its 6GHz boost clock is the highest here; the Ryzen 9 9950X3D comes next at 5.7GHz.

It matches the Core Ultra 9 285K on core count (24 cores). An LGA1700 socket is unique to it among these picks, while the Ryzen 7 9800X3D uses an AM5 socket. You get DDR4 or DDR5 memory here, which sets it apart from the Core Ultra 9 285K and its DDR5 memory.

It also comes with 8 performance and 16 efficient cores. It fits LGA1700 boards (600 and 700 series) with either DDR4 or DDR5, depending on the board; 600-series boards may need a BIOS update for 14th-gen chips. On price it sat second of 5, between the cheaper Ryzen 7 9800X3D and the pricier Ryzen 7 9850X3D, at the time of writing.

Key specs

L3 cache
36MB
Max boost
6GHz
Cores / threads
24 cores
Rated power
125W
Threads
32
Socket
LGA1700
Memory
DDR4 or DDR5
Cooler in box
No
Integrated graphics
Yes

Pros

  • 6GHz maximum boost
  • 24 cores for encoding and background work
  • Integrated graphics for display output without a graphics card
  • 8 performance and 16 efficient cores

Cons

  • No cooler in the box
  • L3 cache trails the Ryzen 9 9950X3D (128MB)
  • Costs more than the Ryzen 7 9800X3D at the time of writing

The catch

The trade-off is L3 cache; for more, the Ryzen 9 9950X3D offers 128MB.

How We Chose

Alex Morgan compared the manufacturer specifications, connectivity, warranty terms and compatibility of every pick. Figures come from the makers unless a third-party source is named; we did not test these products ourselves.

A desktop CPU seated in its motherboard socket with the retention frame open
A desktop CPU seated in its motherboard socket with the retention frame open
What we compared
We set side by side five processors on L3 cache, boost clock, core count and rated power from manufacturer specifications. Nothing was tested in-house; 9 of the 9 fields compared are stated for every pick.
What every pick has in common
All 5, from the Ryzen 7 9850X3D to the Core i9-14900K, state L3 cache, boost clock and core count and share integrated graphics.
Who each pick suits
The Ryzen 7 9850X3D for a 5.6GHz boost with 96MB of L3; the Ryzen 7 9800X3D for 96MB of L3 on eight Zen 5 cores; the Ryzen 9 9950X3D for the largest L3 cache here (128MB).
Price range
At our last check the picks ran from the Ryzen 7 9800X3D ($250 to $500) to the Ryzen 9 9950X3D ($500 to $1000).

What to Look for in a High-End Gaming CPUs

Key buying criteria so you get the right fit the first time.

  1. L3 cache

    Here L3 cache runs from 36MB on the Core i9-14900K to 128MB on the Ryzen 9 9950X3D, a 256% spread. The Ryzen 7 9850X3D comes second at 96MB, in the $250 to $500 tier against $500 to $1000 for the Ryzen 9 9950X3D.

  2. Boost clock across these picks

    Across these 5 picks boost clock spans 5.2GHz (the Ryzen 7 9800X3D) to 6GHz (the Core i9-14900K). If boost clock is your first filter, the Core i9-14900K sets the ceiling at 6GHz.

    An Intel stock cooler mounted over the CPU socket inside a PC
    An Intel stock cooler mounted over the CPU socket inside a PC
  3. How much core count you need

    Across these 5 picks core count spans 8 cores (the Ryzen 7 9800X3D) to 24 cores (the Core Ultra 9 285K). The Core i9-14900K comes second at 24 cores, in the $250 to $500 tier against $500 to $1000 for the Core Ultra 9 285K.

  4. Memory

    The Ryzen 7 9850X3D, the Ryzen 7 9800X3D, the Ryzen 9 9950X3D and the Core Ultra 9 285K list DDR5; the Core i9-14900K lists DDR4 or DDR5. Settling memory first narrows 5 picks to 4 or 1.

  5. Cooler in box

    The Ryzen 7 9850X3D, the Ryzen 7 9800X3D, the Ryzen 9 9950X3D, the Core Ultra 9 285K and the Core i9-14900K go without. Sort out cooler in box before price: it splits 5 stated picks into groups of 5.

How to Choose a High-End Gaming CPUs

By priority

PriorityConsiderWhy
Pure gaming at high refresh ratesRyzen 7 9850X3DA 5.6GHz boost with 96MB of L3
High-end gaming for lessRyzen 7 9800X3D96MB of L3 on eight Zen 5 cores
Games that are limited by the CPU at high frame ratesRyzen 9 9950X3DThe largest L3 cache here (128MB)
New Intel high-end buildsCore Ultra 9 285K24 cores with a 5.7GHz boost on LGA1851
Existing Z690 and Z790 boardsCore i9-14900KA 6.0GHz listed boost

Scroll sideways to see every column.

Key specs side by side

The Ryzen 9 9950X3D leads on L3 cache at 128MB, ahead of the Ryzen 7 9850X3D at 96MB.

ProcessorL3 cacheMax boostCores / threadsRated power
Ryzen 7 9850X3D96MB5.6GHz8 cores120W
Ryzen 7 9800X3D96MB5.2GHz8 cores120W
Ryzen 9 9950X3D128MB5.7GHz16 cores170W
Core Ultra 9 285K36MB5.7GHz24 cores125W
Core i9-14900K36MB6GHz24 cores125W

Scroll sideways to see every column.

By price at the time of writing

The Ryzen 7 9800X3D was the lowest-priced pick ($250 to $500) and the Ryzen 9 9950X3D the highest ($500 to $1000) when we checked; tiers move with Amazon pricing.

Price tierProcessors
About $250 to $500Ryzen 7 9800X3D, Core i9-14900K, Ryzen 7 9850X3D
About $500 to $1000Core Ultra 9 285K, Ryzen 9 9950X3D

Frequently Asked Questions

Which has the largest L3 cache: the Ryzen 9 9950X3D or the Ryzen 7 9850X3D?

The Ryzen 9 9950X3D tops L3 cache at 128MB; the Ryzen 7 9850X3D follows at 96MB, 33% apart. The Core i9-14900K closes the ranking at 36MB.

Is the Core i9-14900K ahead of the Ryzen 9 9950X3D on boost clock?

The Core i9-14900K leads at 6GHz, with the Ryzen 9 9950X3D at 5.7GHz. The Ryzen 7 9800X3D is at the other end of this group with 5.2GHz.

What does the Ryzen 9 9950X3D add over the Ryzen 7 9800X3D?

The spec sheets show L3 cache (128MB against 96MB), boost clock (5.7GHz against 5.2GHz) and core count (16 cores against 8 cores) in its favour. It does not win everywhere: the Ryzen 7 9800X3D still leads on rated power (120W). On our last price check the Ryzen 7 9800X3D was in the $250 to $500 tier and the Ryzen 9 9950X3D in the $500 to $1000 tier, with 3 other picks between them; pay the difference only if L3 cache and boost clock decide your purchase.

Why is the Ryzen 7 9850X3D our Best High-End Gaming Chip pick?

The label rests on a 5.6GHz boost with 96MB of L3. It is aimed at pure gaming at high refresh rates.

Do the Ryzen 7 9850X3D and the Core Ultra 9 285K differ on socket?

The Ryzen 7 9850X3D, the Ryzen 7 9800X3D and the Ryzen 9 9950X3D use AM5; the Core Ultra 9 285K uses LGA1851; the Core i9-14900K uses LGA1700.

What extras do the Ryzen 7 9850X3D and the Ryzen 7 9800X3D include?

The Ryzen 7 9850X3D: a higher-clocked take on the 9800X3D design. The Ryzen 7 9800X3D: second-generation 3D V-Cache placed under the cores. The Ryzen 9 9950X3D: 3D V-Cache on one of its two core dies.

Bottom Line

The Ryzen 7 9850X3D is the best high-end gaming chip, and the 9800X3D delivers nearly the same for less. The Ryzen 9 9950X3D suits creators, the Core Ultra 9 285K is Intel's new flagship, and the i9-14900K upgrades existing LGA1700 boards.

About the author

PC Hardware Editor

Alex covers PC hardware, monitors, components, upgrades and peripherals for The PC Journal, with a focus on helping readers understand specifications, compatibility and meaningful product trade-offs.

Covers: Monitors, Graphics cards, Processors, PC components, Peripherals, Upgrades and compatibility

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