Buying Guide
The Best CPUs for 4K Gaming
Six processors compared for 4K gaming, where the graphics card sets frame rates and extra cores often serve work more than games.
By The PC Journal editorial team
12 min read6 products evaluated
At 4K, and even with upscaling, the graphics card sets the frame rate in most games. The CPU matters in simulation games and when upscaling lowers the render resolution.
We compared six processors on cache, cores and platform, using AMD and Intel specifications.
Quick Picks
Our 6 recommendations at a glance. Tap a pick for the full verdict.
Best for 4K Gaming
AMD Ryzen 7 9800X3D
96MB of L3 that also helps 4K with upscaling.
Best for: Top-end graphics cards.
Our take Check price for AMD Ryzen 7 9800X3D (opens in a new tab)
Highest-Clocked X3D
AMD Ryzen 7 9850X3D
A higher boost ceiling than the 9800X3D.
Best for: Players who want the fastest eight-core X3D.
Our take Check price for AMD Ryzen 7 9850X3D (opens in a new tab)
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.
Our take Check price for AMD Ryzen 9 9950X3D (opens in a new tab)
Best Value at 4K
AMD Ryzen 7 9700X
Eight Zen 5 cores at 65W.
Best for: 4K builds that spend more on the graphics card.
Our take Check price for AMD Ryzen 7 9700X (opens in a new tab)
Best Intel Pick
Intel Core Ultra 9 285K
Twenty-four cores on LGA1851.
Best for: Intel builds for heavy creative work.
Our take Check price for Intel Core Ultra 9 285K (opens in a new tab)
Well-Rounded Choice
AMD Ryzen 7 7800X3D
The Ryzen 7 7800X3D was the first eight-core AM5 chip with 3D V-Cache.
Best for: Buyers who want 96mb of l3 cache from 3d v-cache.
Our take Check price for AMD Ryzen 7 7800X3D (opens in a new tab)
Our Picks
Best for 4K Gaming1 of 6
AMD Ryzen 7 9800X3D on Amazon (opens in a new tab)
The Ryzen 7 9800X3D pairs 96MB of L3 cache with eight Zen 5 cores.
Best for
- Top-end graphics cards.
Skip if
- Choose another pick if you can't accept this: no cooler in the box.
Why we like it
AMD moved the cache below the cores on this generation, which lets it clock higher than the 7800X3D. Its 5.2GHz boost clock ranks fifth of 6 here, behind the Ryzen 9 9950X3D (5.7GHz) and ahead of the Ryzen 7 7800X3D (5GHz). On core count it ties with the Ryzen 7 9850X3D, the Ryzen 7 9700X and the Ryzen 7 7800X3D at 8 cores.
You also get 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.
Key dimensions & 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
- Costs more than the Ryzen 7 9700X at the time of writing
Highest-Clocked X3D2 of 6
AMD Ryzen 7 9850X3D on Amazon (opens in a new tab)
The Ryzen 7 9850X3D is a higher-clocked version of the 9800X3D: the same eight cores and 96MB of L3 with a higher boost ceiling.
Best for
- Players who want the fastest eight-core X3D.
Skip if
- Pass on it if no cooler in the bo rules it out for your setup.
Why we like it
It is AMD's second-generation X3D eight-core chip with 96MB of L3 cache. On boost clock it sits mid-pack at 5.6GHz: the Ryzen 9 9950X3D offers 5.7GHz, and the Ryzen 7 7800X3D comes in at 5GHz. It matches the Ryzen 7 9800X3D and the Ryzen 7 7800X3D on rated power (120W).
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. Its price falls between the Ryzen 7 9800X3D and the Core Ultra 9 285K, based on our last check.
Key dimensions & 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 9700X at the time of writing
Largest Game Cache3 of 6
AMD Ryzen 9 9950X3D on Amazon (opens in a new tab)
The Ryzen 9 9950X3D combines sixteen cores with 128MB of L3 cache.
Best for
- Games that are limited by the CPU at high frame rates.
Skip if
- Look at the others if this bothers you: 170W rating calls for a large air cooler or a 280mm-plus AIO.
Why we like it
It is the chip for players who also render, compile or encode on the same machine. Nothing else here matches its 128MB L3 cache; the Ryzen 7 9800X3D comes closest at 96MB. On boost clock it ties with the Core Ultra 9 285K at 5.7GHz.
Its 16 cores core count ranks second of 6 here, behind the Core Ultra 9 285K (24 cores) and ahead of the Ryzen 7 7800X3D (8 cores). Its 170W rated power is the highest in this group; the Ryzen 7 9700X leads at 65W. You also get 3D V-Cache on one of its two core dies and a design aimed at both games and content creation. It was the highest-priced of the 6 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 dimensions & 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 9700X (65W)
Best Value at 4K4 of 6
AMD Ryzen 7 9700X on Amazon (opens in a new tab)
The Ryzen 7 9700X runs eight Zen 5 cores at a 65W default rating.
Best for
- 4K builds that spend more on the graphics card.
Skip if
- Choose another pick if you can't accept this: no cooler in the box.
Why we like it
It needs only a modest cooler and has room to grow with AMD's power boost setting. On L3 cache it trails the group at 32MB, while the Ryzen 9 9950X3D offers 128MB. On boost clock it sits mid-pack at 5.5GHz: the Ryzen 9 9950X3D offers 5.7GHz, and the Ryzen 7 7800X3D comes in at 5GHz.
It matches the Ryzen 7 9800X3D, the Ryzen 7 9850X3D and the Ryzen 7 7800X3D on core count (8 cores). On rated power it leads this guide at 65W, ahead of the Ryzen 7 9800X3D (120W). 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.
No cooler is included; a single-tower air cooler is enough at its rating. It was the cheapest of the group when we checked; the Ryzen 7 7800X3D was the next step up.
Key dimensions & specs
- L3 cache: 32MB
- Max boost: 5.5GHz
- Cores / threads: 8 cores
- Rated power: 65W
- Threads: 16
- Socket: AM5
- Memory: DDR5
- Cooler in box: No
- Integrated graphics: Yes
Pros
- 5.5GHz maximum boost
- 65W rating suits a modest air cooler
- Integrated graphics for display output without a graphics card
- The Zen 5 architecture
Cons
- No cooler in the box
- L3 cache trails the Ryzen 9 9950X3D (128MB)
Best Intel Pick5 of 6
Intel Core Ultra 9 285K on Amazon (opens in a new tab)
The Core Ultra 9 285K is Intel's twenty-four-core LGA1851 flagship.
Best for
- Intel builds for heavy creative work.
Skip if
- Choose another pick if you can't accept this: no cooler in the box.
Why we like it
It targets heavy creative work more than frame rates alone. Its 36MB L3 cache ranks fifth of 6 here, behind the Ryzen 9 9950X3D (128MB) and ahead of the Ryzen 7 9700X (32MB). It matches the Ryzen 9 9950X3D on boost clock (5.7GHz).
On core count it leads this guide at 24 cores, ahead of the Ryzen 9 9950X3D (16 cores). On rated power it sits mid-pack at 125W: the Ryzen 7 9700X offers 65W, and the Ryzen 9 9950X3D comes in at 170W. It is the only pick here with an LGA1851 socket; the Ryzen 9 9950X3D has an AM5 socket instead.
You also get 8 performance and 16 efficient cores and a built-in NPU for AI features. When we checked, only the Ryzen 7 9850X3D and cheaper picks cost less, and the Ryzen 9 9950X3D cost more.
Key dimensions & 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 9700X at the time of writing
Well-Rounded Choice6 of 6
AMD Ryzen 7 7800X3D on Amazon (opens in a new tab)
The Ryzen 7 7800X3D was the first eight-core AM5 chip with 3D V-Cache.
Best for
- Buyers who want 96mb of l3 cache from 3d v-cache.
Skip if
- Pass on it if no cooler in the bo rules it out for your setup.
Why we like it
It carries the same 96MB of L3 as the 9800X3D at a lower boost clock and a lower price. On boost clock it trails the group at 5GHz, while the Ryzen 9 9950X3D offers 5.7GHz. It matches the Ryzen 7 9800X3D, the Ryzen 7 9850X3D and the Ryzen 7 9700X on core count (8 cores).
You also get the Zen 4 architecture. It needs an AM5 board (A620, B650, B850, X670 or X870 series) and DDR5 memory; check the board's CPU support list for the minimum BIOS version. Budget for a dual-tower air cooler or a 240mm-plus AIO, since none is included. Its price falls between the Ryzen 7 9700X and the Ryzen 7 9800X3D, based on our last check.
Key dimensions & specs
- L3 cache: 96MB
- Max boost: 5GHz
- 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
- First-generation AM5 3D V-Cache
- The Zen 4 architecture
Cons
- No cooler in the box
- Boost clock trails the Ryzen 9 9950X3D (5.7GHz)
- Core count trails the Core Ultra 9 285K (24 cores)
How We Chose
Each pick was assessed across 4 criteria weighted for real-world use.
- Game-relevant specs
- We compared L3 cache, boost clocks and core counts from AMD's and Intel's product pages.
- Power and cooling
- We recorded each chip's rated power and what cooler class it needs.
- Upgrade path
- We considered how long each socket is likely to receive new CPUs.
- Platform cost
- We noted socket, memory type and whether a cooler is included, since they change the real price.
What to Look for in a CPUs for 4K Gaming
Key buying criteria so you get the right fit the first time.
Match the CPU to your graphics card and monitor
At 1440p and 4K the graphics card sets most frame rates, so a mid-range CPU is often enough. At 1080p with a high-refresh monitor, the CPU matters much more.
Spend on the part that limits your games, not on the bigger number.
Cores matter for streaming and creation
Six and eight cores cover gaming. Streaming with CPU encoding, video editing and compiling benefit from twelve or sixteen.
If you encode on the graphics card instead, core count matters less.
The socket decides your upgrade path
The socket fixes which motherboards and future CPUs you can use. AM5 has had several CPU generations; AM4 has no newer chips coming.
If you plan to upgrade later, a current platform is worth a small premium.
Check BIOS support before buying
Newer CPUs on older boards may need a BIOS update before the system will start. Check the board's CPU support list for the version you need and whether the board can flash without a CPU installed.
Cache helps games more than clocks
AMD's X3D chips add a large stacked L3 cache that keeps more game data close to the cores. In CPU-limited games that often helps more than a higher boost clock.
The gain shrinks when the graphics card is the limit.
Budget for the cooler
Most unlocked chips ship without a cooler. A 65W part runs well on a basic single tower, while 120W to 170W parts need a dual tower or an AIO to hold their boost clocks.
Add the cooler to the CPU price when comparing.
How to Choose a CPUs for 4K Gaming
By priority
| Priority | Consider | Why |
|---|---|---|
| Top-end graphics cards | Ryzen 7 9800X3D | 96MB of L3 that also helps 4K with upscaling |
| Players who want the fastest eight-core X3D | Ryzen 7 9850X3D | A higher boost ceiling than the 9800X3D |
| Games that are limited by the CPU at high frame rates | Ryzen 9 9950X3D | The largest L3 cache here (128MB) |
| 4K builds that spend more on the graphics card | Ryzen 7 9700X | Eight Zen 5 cores at 65W |
| Intel builds for heavy creative work | Core Ultra 9 285K | Twenty-four cores on LGA1851 |
Scroll sideways to see every column.
Key specs side by side
Figures as each maker states them.
| Processor | L3 cache | Max boost | Cores / threads | Rated power |
|---|---|---|---|---|
| Ryzen 7 9800X3D | 96MB | 5.2GHz | 8 cores | 120W |
| Ryzen 7 9850X3D | 96MB | 5.6GHz | 8 cores | 120W |
| Ryzen 9 9950X3D | 128MB | 5.7GHz | 16 cores | 170W |
| Ryzen 7 9700X | 32MB | 5.5GHz | 8 cores | 65W |
| Core Ultra 9 285K | 36MB | 5.7GHz | 24 cores | 125W |
| Ryzen 7 7800X3D | 96MB | 5GHz | 8 cores | 120W |
Scroll sideways to see every column.
By price at the time of writing
Prices change often; these tiers reflect Amazon prices when this guide was updated.
| Price tier | Processors |
|---|---|
| About $250 to $500 | Ryzen 7 9700X, Ryzen 7 7800X3D, Ryzen 7 9800X3D, Ryzen 7 9850X3D |
| About $500 to $1000 | Core Ultra 9 285K, Ryzen 9 9950X3D |
Frequently Asked Questions
What does X3D mean on a Ryzen CPU?
It marks AMD's 3D V-Cache chips, which stack extra L3 cache on the processor. Games that are limited by the CPU tend to run faster on them.
What does the rated power figure mean?
It is AMD's default TDP or Intel's base power. Chips can draw more under boost, so size the cooler for sustained loads, not the label alone.
Do I need to buy a separate cooler?
Usually yes. Only some chips, such as the Ryzen 5 7600 and 5600X, include a basic cooler; unlocked high-end models do not.
Should I choose Intel or AMD for gaming?
At the high end, AMD's X3D chips lead in many CPU-limited games. Intel's Core Ultra chips offer more cores for work at similar prices. Choose by workload and platform cost.
What memory should I pair with it?
AM5 and LGA1851 use DDR5; AM4 uses DDR4. For AM5, a 32GB DDR5-6000 kit is a common pairing; check the board's memory support list.
Is AM4 still worth buying into?
For an upgrade to an existing AM4 system, yes. For a new build, AM5 or LGA1851 gives a longer upgrade path.
Bottom Line
The Ryzen 7 9800X3D is the safe 4K gaming pick. Choose the 9950X3D or Core Ultra 9 285K if the same PC renders or encodes, and the Ryzen 7 9700X if the budget should go to the graphics card.