Buying Guide
The Best 12-Core CPUs
We weighed five processors on L3 cache and boost clock; the Ryzen 9 7900X has the highest boost clock, and the Core Ultra 5 245KF costs the least.
By The PC Journal editorial team
12 min read5 products evaluated
Twelve cores suit rendering and heavy multitasking alongside gaming. Every pick has 12 to 14 cores (Intel's counts include efficiency cores), ordered from the lowest price.
Rankings weigh L3 cache, max boost and cores / threads as the makers state them; we did not test these processors ourselves, and any figure a maker omits is noted as missing.
Quick Picks
Our 5 recommendations at a glance. Tap a pick for the full verdict.

Lowest Price Here
Intel Core Ultra 5 245KF
Undercutting the Core i5-14600KF on price when we checked.
Best for: Buyers who would rather put the savings elsewhere in the build.
Our take Check price for Intel Core Ultra 5 245KF (opens in a new tab)

Also Consider
Intel Core i5-14600KF
6 performance and 8 efficient cores.
Best for: Buyers who want 6 performance and 8 efficient cores.
Our take Check price for Intel Core i5-14600KF (opens in a new tab)

Lowest Rated Power
AMD Ryzen 9 7900
The lowest rated power here (65W).
Best for: Buyers who put rated power first.
Our take Check price for AMD Ryzen 9 7900 (opens in a new tab)

Highest Boost Clock
AMD Ryzen 9 7900X
The highest boost clock here (5.6GHz).
Best for: Buyers who put boost clock first.
Our take Check price for AMD Ryzen 9 7900X (opens in a new tab)

Premium Pick
Intel Core i5-13600K
The top of this price range, adding 6 performance and 8 efficient cores.
Best for: Spending more for the fullest feature set.
Our take Check price for Intel Core i5-13600K (opens in a new tab)
| Pick | Why it’s here | Best for | Price |
|---|---|---|---|
![]() | Undercutting the Core i5-14600KF on price when we checked. | Buyers who would rather put the savings elsewhere in the build. | Check price for Intel Core Ultra 5 245KF (opens in a new tab) |
![]() | 6 performance and 8 efficient cores. | Buyers who want 6 performance and 8 efficient cores. | Check price for Intel Core i5-14600KF (opens in a new tab) |
![]() | The lowest rated power here (65W). | Buyers who put rated power first. | Check price for AMD Ryzen 9 7900 (opens in a new tab) |
![]() | The highest boost clock here (5.6GHz). | Buyers who put boost clock first. | Check price for AMD Ryzen 9 7900X (opens in a new tab) |
![]() | The top of this price range, adding 6 performance and 8 efficient cores. | Spending more for the fullest feature set. | Check price for Intel Core i5-13600K (opens in a new tab) |
Our Picks
Lowest Price Here1 of 5
Intel Core Ultra 5 245KF on Amazon (opens in a new tab)
The Core Ultra 5 245KF is the entry to LGA1851, with 14 cores and no integrated graphics.
Best for
- Buyers who would rather put the savings elsewhere in the build.
Skip if
- Choose another pick if you can't accept this: no cooler in the box.
Why we like it
It needs a graphics card to show a picture, which every gaming build has anyway. It matches the Core i5-14600KF and the Core i5-13600K on L3 cache (24MB). Its 5.2GHz boost clock ranks fourth of 5 here, behind the Ryzen 9 7900X (5.6GHz) and ahead of the Core i5-13600K (5.1GHz).
It is the only pick here with an LGA1851 socket; the Core i5-14600KF has an LGA1700 socket instead. Like the Ryzen 9 7900 and Ryzen 9 7900X, it has DDR5 memory, while the Core i5-14600KF uses DDR4 or DDR5 memory. It also comes with 6 performance and 8 efficient cores, Intel 800-series chipset support and PCIe 5.0 support.
No other pick here cost less at our last price check, and the Core i5-14600KF was closest. What it gives up: no cooler in box, unlike the Ryzen 9 7900; by contrast, the Ryzen 9 7900 has it.
Key dimensions & specs
- L3 cache: 24MB
- Max boost: 5.2GHz
- Cores / threads: 14 cores
- Rated power: 125W
- Threads: 14
- Socket: LGA1851
- Memory: DDR5
- Cooler in box: No
- Integrated graphics: No
Pros
- 14 cores for encoding and background work
- 6 performance and 8 efficient cores
- Intel 800-series chipset support
- PCIe 5.0 support
Cons
- No cooler in the box
- No integrated graphics, so a graphics card is required
Also Consider2 of 5
Intel Core i5-14600KF on Amazon (opens in a new tab)
The Core i5-14600KF is the 14600K without integrated graphics.
Best for
- Buyers who want 6 performance and 8 efficient cores.
Skip if
- Pass on it if no cooler in the bo rules it out for your setup.
Why we like it
It costs less and needs a graphics card for display output. It matches the Core Ultra 5 245KF and the Core i5-13600K on L3 cache (24MB). Its 5.3GHz boost clock ranks third of 5 here, behind the Ryzen 9 7900X (5.6GHz) and ahead of the Core i5-13600K (5.1GHz).
Like the Core i5-13600K, it has an LGA1700 socket, while the Core Ultra 5 245KF uses an LGA1851 socket. Like the Core i5-13600K, it has DDR4 or DDR5 memory, while the Ryzen 9 7900 uses DDR5 memory. It also comes with 6 performance and 8 efficient cores and an unlocked multiplier.
When we checked, only the Core Ultra 5 245KF cost less, and the Ryzen 9 7900 cost more. What it gives up: no cooler in box, unlike the Ryzen 9 7900; by contrast, the Ryzen 9 7900 has it.
Key dimensions & specs
- L3 cache: 24MB
- Max boost: 5.3GHz
- Cores / threads: 14 cores
- Rated power: 125W
- Threads: 20
- Socket: LGA1700
- Memory: DDR4 or DDR5
- Cooler in box: No
- Integrated graphics: No
Pros
- 14 cores for encoding and background work
- 6 performance and 8 efficient cores
- Unlocked multiplier
- Boost clock of 5.3GHz, ahead of the Core Ultra 5 245KF
Cons
- No cooler in the box
- No integrated graphics, so a graphics card is required
- Costs more than the Core Ultra 5 245KF at the time of writing
Lowest Rated Power3 of 5
AMD Ryzen 9 7900 on Amazon (opens in a new tab)
The Ryzen 9 7900 is the 65W twelve-core AM5 chip with a Wraith Prism cooler included.
Best for
- Buyers who put rated power first.
Skip if
- If budget leads, the Core Ultra 5 245KF was cheaper at our last price check.
Why we like it
It trades a little boost clock for lower heat. On L3 cache it ties with the Ryzen 9 7900X at 64MB. On boost clock it sits mid-pack at 5.4GHz: the Ryzen 9 7900X offers 5.6GHz, and the Core i5-13600K comes in at 5.1GHz.
It matches the Ryzen 9 7900X on core count (12 cores). Its 65W rated power is the lowest here; the Core Ultra 5 245KF comes next at 125W. It shares an AM5 socket with the Ryzen 9 7900X; the Core i5-13600K goes with an LGA1700 socket.
You also get 12 cores at a 65W rating. 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. Its price falls between the Core i5-14600KF and the Ryzen 9 7900X, based on our last check.
Key dimensions & specs
- L3 cache: 64MB
- Max boost: 5.4GHz
- Cores / threads: 12 cores
- Rated power: 65W
- Threads: 24
- Socket: AM5
- Memory: DDR5
- Cooler in box: Yes
- Integrated graphics: Yes
Pros
- 64MB of L3 cache
- 12 cores for encoding and background work
- 65W rating suits a modest air cooler
- Wraith Stealth cooler in the box
Cons
- Costs more than the Core Ultra 5 245KF at the time of writing
Highest Boost Clock4 of 5
AMD Ryzen 9 7900X on Amazon (opens in a new tab)
The Ryzen 9 7900X has 12 Zen 4 cores on AM5.
Best for
- Buyers who put boost clock first.
Skip if
- Worth skipping when 170W rating calls for a large air cooler or a 280mm-plus AI is a problem.
Why we like it
It is a cheaper way to the same thread count as the 9900X, at a higher power rating. On L3 cache it ties with the Ryzen 9 7900 at 64MB. Nothing else here matches its 5.6GHz boost clock; the Ryzen 9 7900 comes closest at 5.4GHz.
Its 170W rated power is the highest in this group; the Ryzen 9 7900 leads at 65W. It shares an AM5 socket with the Ryzen 9 7900; the Core i5-13600K goes with an LGA1700 socket. It also offers the Zen 4 architecture, a 5nm process and PCIe 5.0 support on AM5.
On price it sat fourth of 5, between the cheaper Ryzen 9 7900 and the pricier Core i5-13600K, at the time of writing. The trade-off is core count; for more, the Core Ultra 5 245KF offers 14 cores.
Key dimensions & specs
- L3 cache: 64MB
- Max boost: 5.6GHz
- Cores / threads: 12 cores
- Rated power: 170W
- Threads: 24
- Socket: AM5
- Memory: DDR5
- Cooler in box: No
- Integrated graphics: Yes
Pros
- 64MB of L3 cache
- 5.6GHz maximum boost
- 12 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
- Core count trails the Core Ultra 5 245KF (14 cores)
Premium Pick5 of 5
Intel Core i5-13600K on Amazon (opens in a new tab)
The Core i5-13600K is the previous-generation fourteen-core LGA1700 chip.
Best for
- Spending more for the fullest feature set.
Skip if
- Worth skipping when no cooler in the bo is a problem.
Why we like it
It fits the same boards as the 14600K. On L3 cache it ties with the Core Ultra 5 245KF and the Core i5-14600KF at 24MB. On boost clock it trails the group at 5.1GHz, while the Ryzen 9 7900X offers 5.6GHz.
It shares an LGA1700 socket with the Core i5-14600KF; the Core Ultra 5 245KF goes with an LGA1851 socket. It also comes with 6 performance and 8 efficient cores and an unlocked multiplier. 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.
Budget for a dual-tower air cooler or a 240mm-plus AIO, since none is included. It was the most expensive pick when we checked, so weigh what it adds over the Ryzen 9 7900X. If L3 cache is your priority, the Ryzen 9 7900 (64MB) is the stronger choice.
Key dimensions & specs
- L3 cache: 24MB
- Max boost: 5.1GHz
- Cores / threads: 14 cores
- Rated power: 125W
- Threads: 20
- Socket: LGA1700
- Memory: DDR4 or DDR5
- Cooler in box: No
- Integrated graphics: Yes
Pros
- 14 cores for encoding and background work
- Integrated graphics for display output without a graphics card
- 6 performance and 8 efficient cores
- Unlocked multiplier
Cons
- No cooler in the box
- L3 cache trails the Ryzen 9 7900 (64MB)
- Boost clock trails the Ryzen 9 7900X (5.6GHz)
How We Chose
Each pick was assessed across 4 criteria weighted for real-world use.
- Platform cost
- We noted socket, memory type and whether a cooler is included, since they change the real price.
- Game-relevant specs
- We compared L3 cache, boost clocks and core counts from AMD's and Intel's product pages.
- Upgrade path
- We considered how long each socket is likely to receive new CPUs.
- Power and cooling
- We recorded each chip's rated power and what cooler class it needs.
What to Look for in a 12-Core CPUs
Key buying criteria so you get the right fit the first time.
Where these picks differ: L3 cache
Among these picks, L3 cache runs from 24MB on the Core i5-13600K to 64MB on the Ryzen 9 7900. Settle how much you need before comparing prices, since paying for more rarely helps if your use never reaches it.
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.
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.
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.
How to Choose a 12-Core CPUs
By priority
| Priority | Consider | Why |
|---|---|---|
| Buyers who would rather put the savings elsewhere in the build | Core Ultra 5 245KF | Undercutting the Core i5-14600KF on price when we checked |
| Buyers who want 6 performance and 8 efficient cores | Core i5-14600KF | 6 performance and 8 efficient cores |
| Buyers who put rated power first | Ryzen 9 7900 | The lowest rated power here (65W) |
| Buyers who put boost clock first | Ryzen 9 7900X | The highest boost clock here (5.6GHz) |
| Spending more for the fullest feature set | Core i5-13600K | The top of this price range, adding 6 performance and 8 efficient cores |
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 |
|---|---|---|---|---|
| Core Ultra 5 245KF | 24MB | 5.2GHz | 14 cores | 125W |
| Core i5-14600KF | 24MB | 5.3GHz | 14 cores | 125W |
| Ryzen 9 7900 | 64MB | 5.4GHz | 12 cores | 65W |
| Ryzen 9 7900X | 64MB | 5.6GHz | 12 cores | 170W |
| Core i5-13600K | 24MB | 5.1GHz | 14 cores | 125W |
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 $150 to $250 | Core Ultra 5 245KF, Core i5-14600KF |
| About $250 to $500 | Ryzen 9 7900, Ryzen 9 7900X, Core i5-13600K |
Frequently Asked Questions
Which pick leads on rated power?
The Ryzen 9 7900, at 65W. The Core Ultra 5 245KF follows at 125W, while the Ryzen 9 7900X has 170W.
Which pick costs the least here?
The Core Ultra 5 245KF. It undercut the Core i5-14600KF when we checked, while the Core i5-13600K cost the most of the group.
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.
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.
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.
Bottom Line
Our first pick is the Core Ultra 5 245KF, chosen for undercutting the Core i5-14600KF on price when we checked. Look at the Core i5-14600KF for 6 performance and 8 efficient cores, the Ryzen 9 7900 for the lowest rated power here (65W) and the Ryzen 9 7900X for the highest boost clock here (5.6GHz) if those matter more to you.
Check whether your apps scale past eight cores before paying for twelve.
