Buying Guide
The Best Budget CPUs for Gaming
From the Core Ultra 5 225F to the Core i5-12400F: three processors ranked on L3 cache and boost clock, with who should skip each one.
By The PC Journal editorial team
11 min read3 products evaluated
A budget CPU needs six cores and a good boost clock to feed a mid-range card. Every pick costs $160 or less, ordered by boost clock.
This is a research roundup, not a lab test: L3 cache, max boost and cores / threads come from each maker's published specs; nothing here was tested in-house, and gaps in the specs are flagged, not filled in.
Quick Picks
Our 3 recommendations at a glance. Tap a pick for the full verdict.
Highest Boost Clock
Intel Core Ultra 5 225F
The highest boost clock here (4.9GHz).
Best for: Buyers who put boost clock first.
Our take Check price for Intel Core Ultra 5 225F (opens in a new tab)
Largest Game Cache
AMD Ryzen 5 5600
The largest L3 cache here (32MB).
Best for: Players chasing 1% lows in simulation and esports titles.
Our take Check price for AMD Ryzen 5 5600 (opens in a new tab)
Premium Pick
Intel Core i5-12400F
The highest-priced pick here at the time of writing, with six performance cores.
Best for: Buyers who want the most complete package.
Our take Check price for Intel Core i5-12400F (opens in a new tab)
| Pick | Why it’s here | Best for | Price |
|---|---|---|---|
| The highest boost clock here (4.9GHz). | Buyers who put boost clock first. | Check price for Intel Core Ultra 5 225F (opens in a new tab) |
| The largest L3 cache here (32MB). | Players chasing 1% lows in simulation and esports titles. | Check price for AMD Ryzen 5 5600 (opens in a new tab) |
| The highest-priced pick here at the time of writing, with six performance cores. | Buyers who want the most complete package. | Check price for Intel Core i5-12400F (opens in a new tab) |
Our Picks
Highest Boost Clock1 of 3
Intel Core Ultra 5 225F on Amazon (opens in a new tab)
The Core Ultra 5 225F is a locked ten-core LGA1851 chip.
Best for
- Buyers who put boost clock first.
Skip if
- Choose another pick if you can't accept this: no cooler in the box.
Why we like it
It suits a budget Intel build that will pair with a B860 board. On L3 cache it sits mid-pack at 20MB: the Ryzen 5 5600 offers 32MB, and the Core i5-12400F comes in at 18MB. Its 4.9GHz boost clock is the highest here; the Ryzen 5 5600 comes next at 4.4GHz.
Nothing else here matches its 10 cores core count; the Ryzen 5 5600 comes closest at 6 cores. It matches the Core i5-12400F on rated power (125W). An LGA1851 socket is unique to it among these picks, while the Core i5-12400F uses an LGA1700 socket.
You get DDR5 memory here, which sets it apart from the Core i5-12400F and its DDR4 or DDR5 memory. It undercut the Ryzen 5 5600 and every other pick on price at the time of writing. The main gap: no cooler in box, unlike the Ryzen 5 5600. If that matters, the Ryzen 5 5600 has it.
Key dimensions & specs
- L3 cache: 20MB
- Max boost: 4.9GHz
- Cores / threads: 10 cores
- Rated power: 125W
- Threads: 10
- Socket: LGA1851
- Memory: DDR5
- Cooler in box: No
- Integrated graphics: No
Pros
- 6 performance and 4 efficient cores
- PCIe 5.0 support
- Intel 800-series chipset support
- L3 cache of 20MB, ahead of the Core i5-12400F
Cons
- No cooler in the box
- No integrated graphics, so a graphics card is required
Largest Game Cache2 of 3
AMD Ryzen 5 5600 on Amazon (opens in a new tab)
The Ryzen 5 5600 is the lower-clocked, cheaper sibling of the 5600X with a Wraith Stealth cooler in the box.
Best for
- Players chasing 1% lows in simulation and esports titles.
Skip if
- Look at the others if this bothers you: 6 cores leave less headroom for streaming alongside games.
Why we like it
It is a common drop-in upgrade for AM4 owners. Nothing else here matches its 32MB L3 cache; the Core Ultra 5 225F comes closest at 20MB. It matches the Core i5-12400F on boost clock (4.4GHz).
On core count it ties with the Core i5-12400F at 6 cores. On rated power it leads this guide at 65W, ahead of the Core Ultra 5 225F (125W). No other pick in this guide offers an AM4 socket; compare the Core Ultra 5 225F, which has an LGA1851 socket.
It is the only pick here with DDR4 memory; the Core Ultra 5 225F has DDR5 memory instead. You also get DDR4 support that keeps an AM4 upgrade cheap. It was priced above the Core Ultra 5 225F and below the Core i5-12400F at the time of writing.
Key dimensions & specs
- L3 cache: 32MB
- Max boost: 4.4GHz
- Cores / threads: 6 cores
- Rated power: 65W
- Threads: 12
- Socket: AM4
- Memory: DDR4
- Cooler in box: Yes
- Integrated graphics: No
Pros
- 65W rating suits a modest air cooler
- Wraith Stealth cooler in the box
- DDR4 support that keeps an AM4 upgrade cheap
- Largest L3 cache of the picks (32MB)
Cons
- 6 cores leave less headroom for streaming alongside games
- AM4 is a final-generation platform with no newer CPUs coming
- No integrated graphics, so a graphics card is required
Premium Pick3 of 3
Intel Core i5-12400F on Amazon (opens in a new tab)
The Core i5-12400F is a six-core LGA1700 chip at a low price.
Best for
- Buyers who want the most complete package.
Skip if
- Skip it if this is a deal-breaker for you: 6 cores leave less headroom for streaming alongside games.
Why we like it
This is the OEM pack, so budget for a cooler; it suits a low-cost gaming build with DDR4. Its 18MB L3 cache is the smallest in this group; the Ryzen 5 5600 leads at 32MB. It matches the Ryzen 5 5600 on boost clock (4.4GHz).
On core count it ties with the Ryzen 5 5600 at 6 cores. On rated power it ties with the Core Ultra 5 225F at 125W. No other pick in this guide offers an LGA1700 socket; compare the Core Ultra 5 225F, which has an LGA1851 socket.
It is the only pick here with DDR4 or DDR5 memory; the Core Ultra 5 225F has DDR5 memory instead. It also offers six performance cores, DDR4 and DDR5 support and 600- and 700-series chipset support. Only the Ryzen 5 5600 came close to it on price at the time of writing; it cost the most of the 3 picks.
Key dimensions & specs
- L3 cache: 18MB
- Max boost: 4.4GHz
- Cores / threads: 6 cores
- Rated power: 125W
- Threads: 12
- Socket: LGA1700
- Memory: DDR4 or DDR5
- Cooler in box: No
- Integrated graphics: No
Pros
- Six performance cores
- DDR4 and DDR5 support
- 600- and 700-series chipset support
- LGA1700 socket, the only one here
Cons
- 6 cores leave less headroom for streaming alongside games
- No cooler in the box
- No integrated graphics, so a graphics card is required
How We Chose
Each pick was assessed across 4 criteria weighted for real-world use.
- How these picks were ranked
- We compared three processors on L3 cache, boost clock, core count and rated power as the makers state them. We did not test them in-house.
- The shared baseline
- All 3, from the Core Ultra 5 225F to the Core i5-12400F, state L3 cache, boost clock and core count.
- Who each pick suits
- The Core Ultra 5 225F for the highest boost clock here (4.9GHz); the Ryzen 5 5600 for the largest L3 cache here (32MB); the Core i5-12400F for the highest-priced pick here at the time of writing, with six performance cores.
- Price range
- At our last check the picks ran from the Core Ultra 5 225F ($100 to $150) to the Core i5-12400F ($150 to $250).
What to Look for in a Budget CPUs for Gaming
Key buying criteria so you get the right fit the first time.
L3 cache
Here L3 cache runs from 18MB on the Core i5-12400F to 32MB on the Ryzen 5 5600. For less, the Core Ultra 5 225F is the runner-up at 20MB.
How much boost clock you need
Here boost clock runs from 4.4GHz on the Core i5-12400F to 4.9GHz on the Core Ultra 5 225F. Start with the Core Ultra 5 225F if boost clock decides it.
Core count across these picks
Here core count runs from 6 cores on the Core i5-12400F to 10 cores on the Core Ultra 5 225F. The Core Ultra 5 225F is the pick for core count.
Memory
The Core Ultra 5 225F lists DDR5; the Ryzen 5 5600 lists DDR4; the Core i5-12400F lists DDR4 or DDR5.
Cooler in box
The Core Ultra 5 225F and the Core i5-12400F go without; the Ryzen 5 5600 has it. Settle this first, then compare prices.
How to Choose a Budget CPUs for Gaming
By priority
| Priority | Consider | Why |
|---|---|---|
| Buyers who put boost clock first | Core Ultra 5 225F | The highest boost clock here (4.9GHz) |
| Players chasing 1% lows in simulation and esports titles | Ryzen 5 5600 | The largest L3 cache here (32MB) |
| Buyers who want the most complete package | Core i5-12400F | The highest-priced pick here at the time of writing, with six performance cores |
Scroll sideways to see every column.
Key specs side by side
The Ryzen 5 5600 leads on L3 cache at 32MB, ahead of the Core Ultra 5 225F at 20MB.
| Processor | L3 cache | Max boost | Cores / threads | Rated power |
|---|---|---|---|---|
| Core Ultra 5 225F | 20MB | 4.9GHz | 10 cores | 125W |
| Ryzen 5 5600 | 32MB | 4.4GHz | 6 cores | 65W |
| Core i5-12400F | 18MB | 4.4GHz | 6 cores | 125W |
Scroll sideways to see every column.
By price at the time of writing
The Core Ultra 5 225F was the lowest-priced pick and the Core i5-12400F the highest when we checked; tiers move with Amazon pricing.
| Price tier | Processors |
|---|---|
| About $100 to $150 | Core Ultra 5 225F |
| About $150 to $250 | Ryzen 5 5600, Core i5-12400F |
Frequently Asked Questions
How does the Core Ultra 5 225F compare with the Ryzen 5 5600 on L3 cache?
The Ryzen 5 5600 leads at 32MB, with the Core Ultra 5 225F at 20MB. The Core i5-12400F is at the other end of this group with 18MB.
Is the Core Ultra 5 225F ahead of the Ryzen 5 5600 on boost clock?
The Core Ultra 5 225F leads at 4.9GHz, with the Ryzen 5 5600 at 4.4GHz.
Is the Core Ultra 5 225F ahead of the Ryzen 5 5600 on core count?
The Core Ultra 5 225F leads at 10 cores, with the Ryzen 5 5600 at 6 cores.
Is the Core i5-12400F worth paying more than the Core Ultra 5 225F?
On the figures both makers state, it adds little. It does not win everywhere: the Core Ultra 5 225F still leads on L3 cache (20MB) and boost clock (4.9GHz). The Core Ultra 5 225F was the lowest-priced pick when we checked, so pay the difference only if a feature outside the spec sheet matters to you.
What makes the Core Ultra 5 225F the Highest Boost Clock?
It earns the label for the highest boost clock here (4.9GHz). It suits anyone who put boost clock first.
Do the Core Ultra 5 225F and the Ryzen 5 5600 differ on socket?
The Core Ultra 5 225F uses LGA1851; the Ryzen 5 5600 uses AM4; the Core i5-12400F uses LGA1700.
Bottom Line
Our first pick is the Core Ultra 5 225F, chosen for the highest boost clock here (4.9GHz). Look at the Core i5-12400F for the highest-priced pick here at the time of writing, with six performance cores if those matter more to you.
Check whether a cooler is included; boxed coolers save about $25.