Best CPUs for Gaming Under £300

2. AMD Ryzen 5 5600X Processor (6 Cores/12Threads, 65W TDP, AM4 Socket, 35MB Cache, up to 4.6 GHz Max Boost, Wraith Stealth Cooler)

This is the chip most people should actually buy. At this price, the Ryzen 5 5600X offers brilliant gaming performance, comes with a perfectly adequate cooler, and slots into mature, affordable AM4 motherboards that you can find for under £80.

The six Zen 3 cores might not sound impressive compared to the 24-core monsters on this list, but games don't need 24 cores. They need fast cores with good IPC (instructions per clock), and the 5600X delivers. Base clock sits at 3.7GHz, boosting to 4.6GHz on single-threaded workloads. That's quick enough for every game released in 2026.

In our testing, the 5600X handled 1080p gaming without breaking a sweat. Fortnite at competitive settings? Over 240fps with a decent GPU. Red Dead Redemption 2 at high settings? Smooth 60fps with an RTX 4060. Even at 1440p, this chip rarely bottlenecks unless you're running something silly like an RTX 4090.

The included Wraith Stealth cooler is basic but functional. It'll keep the chip cool at stock speeds, though it gets a bit loud under sustained load. If noise bothers you, chuck a £25 tower cooler on there and you're sorted. The 65W TDP means heat isn't really a concern anyway.

What makes this chip special for gaming builds is the complete package. You're getting strong performance, a cooler, and access to cheap DDR4 memory and B550 motherboards. Total platform cost is significantly lower than AM5 or Intel's LGA1700, which matters when you're trying to maximise GPU budget. See our full Ryzen 5 5600X review for detailed benchmarks.

3. AMD Ryzen 7 9700X Processor (8 Cores/16 Threads) 65W DTP, AM5 socket, 40MB Cache, Up to 5.5 GHz max boost frequency, no cooler

The 9700X sits in an interesting spot. At this price, it's not the fastest gaming chip on this list (that's the 9800X3D), but it's the best option if you're mixing gaming with content creation, streaming, or heavy multitasking.

Those eight Zen 5 cores make a real difference when you're running OBS in the background, editing videos in DaVinci Resolve, or compiling code between gaming sessions. The 5.5GHz boost clock is properly quick, and the improved IPC over Zen 3 means single-threaded performance is excellent.

Gaming performance is strong, just not quite at 9800X3D levels. In CPU-limited scenarios at 1080p, you'll see about 8-10% lower frame rates compared to the 3D V-Cache chip. But pair this with a mid-range GPU and game at 1440p? You won't notice the difference. The GPU becomes the bottleneck long before the CPU does.

The AM5 platform is the real selling point here. You're getting DDR5 support, PCIe 5.0 for future GPUs and SSDs, and an upgrade path that'll last years. AMD's committed to supporting AM5 through 2027 at least, so you could drop a next-gen chip in down the line without changing motherboards.

One annoyance: no bundled cooler. Budget another £35-45 for something decent. The 65W TDP means you don't need anything exotic, but you do need something. Also, AM5 motherboards still cost more than AM4 equivalents, so factor that into your total build cost. Our Ryzen 7 9700X review has the full breakdown.

4. AMD Ryzen 5 3600 Processor (6 Cores/12Threads, 65W DTP, AM4 Socket, 35 MB Cache, up to 4.1 GHz Max Boost frequency, Wraith stealth cooler)

The Ryzen 5 3600 is getting on a bit now. Released back in 2019, this Zen 2 chip has been a workhorse for budget gaming builds for years. At this price, it's still relevant in 2026, but you need to understand its limitations.

Gaming performance is adequate for 1080p, particularly in older titles or esports games. CS2, Valorant, and League of Legends run beautifully. Modern AAA titles at high settings? You'll get playable frame rates with a mid-range GPU, but you're definitely leaving performance on the table compared to newer chips.

The six cores run at 3.6GHz base and boost to 4.2GHz, which is noticeably slower than the 5600X. In CPU-heavy games like Total War or Cities: Skylines II, you'll feel the difference. Frame times can get a bit choppy when lots of units are on screen or the simulation gets complex.

So why buy this in 2026? Two reasons. First, if you already have an AM4 motherboard and you're upgrading from something ancient like a Ryzen 3 1200, the 3600 is a cheap performance boost. Second, if you're building an absolute budget gaming PC and every tenner counts, this gets you six proper cores for under £90.

The Wraith Stealth cooler is included, which is nice. It's adequate for the 65W TDP, though it's not exactly whisper-quiet. You also get access to the massive AM4 ecosystem with cheap B450 and B550 boards, plus affordable DDR4 memory. Check our Ryzen 5 3600 review for gaming benchmarks.

5. AMD Ryzen 5 4500 Processor (6 Cores/12 Threads, 65W DTP, AM4 Socket, 11 MB Cache, Up to 4.1 GHz Max Boost, wraith stealth cooler)

At this price, the Ryzen 5 4500 is the cheapest way into modern gaming without buying absolute rubbish. But you're making compromises to hit that price point, and you need to know what they are before you buy.

The 4500 is essentially a cut-down laptop chip repurposed for desktop. It's based on Zen 2 architecture like the 3600, but with less cache (11MB vs 35MB) and slightly lower clocks. The six cores run at 3.6GHz base and boost to 4.1GHz, which is adequate for gaming but not spectacular.

Gaming performance is fine for esports titles and older AAA games. Fortnite, Apex Legends, and Overwatch 2 all run smoothly at 1080p with a budget GPU like the RX 6600. But fire up something like Cyberpunk 2077 or Starfield and you'll notice the CPU struggling to keep up, particularly in busy areas.

The reduced cache really hurts in CPU-bound scenarios. In our testing, the 4500 was about 15-20% slower than the 3600 in games that rely heavily on cache performance. That's a significant gap for a £20 saving.

So who should buy this? Absolute budget builders who need to squeeze every pound. If you're pairing this with a cheap GPU like the RX 6500 XT or GTX 1650, the CPU won't be your bottleneck anyway. It's also decent for a secondary PC, a kid's gaming rig, or an esports box where you're playing less demanding titles.

The Wraith Stealth cooler is included, which is essential at this price point. You're not going to spend another £30 on cooling when the whole chip. The AM4 platform means cheap motherboards and RAM, keeping total system cost low. See our Ryzen 5 4500 review for detailed testing.

Buying Guide: What to Look For in the Best CPUs for Gaming Under £300

Shopping for a gaming CPU in 2026 means understanding a few key specifications and how they actually affect your gaming experience. Let's cut through the marketing waffle and focus on what matters.

Core Count and Threading

Most modern games run perfectly well on six cores with twelve threads. The days of quad-core chips struggling are behind us, but you don't need 16 or 24 cores for gaming either. Those extra cores help with streaming, video editing, and heavy multitasking, but they won't boost your frame rates in Elden Ring. Six to eight cores is the sweet spot for gaming in 2026.

Clock Speed and IPC

Higher clock speeds generally mean better gaming performance, but it's not the whole story. A 5.8GHz chip with old architecture can lose to a 4.6GHz chip with modern, efficient cores. IPC (instructions per clock) matters just as much as raw frequency. AMD's Zen 5 and Zen 3 architectures both offer excellent IPC, which is why they dominate gaming benchmarks despite not always having the highest clock speeds.

Cache Size

This is where AMD's 3D V-Cache chips pull ahead. Games love fast cache memory, and more of it means fewer trips to slower system RAM. The 9800X3D's massive 104MB cache is why it crushes gaming benchmarks. Even among standard chips, more cache generally means better gaming performance. The Ryzen 5 4500's reduced cache is a big reason it underperforms compared to the 3600.

Platform and Socket

AM4 is mature, cheap, and has no upgrade path beyond Zen 3. AM5 is expensive now but offers DDR5, PCIe 5.0, and years of future upgrades. Intel's LGA1700 sits somewhere in the middle. If you're building a budget system you'll keep for 3-4 years, AM4 makes sense. If you want to upgrade the CPU in 2027 or 2028, pay the AM5 premium now.

Integrated Graphics

Not essential, but handy for troubleshooting GPU issues or running a display while you wait for a graphics card. AMD's newer chips (9700X, 9800X3D) include basic integrated graphics. Older Ryzen chips and the i9-14900 also have iGPUs. Budget chips like the 4500, 3600, and 5600X don't, so you'll need a working GPU to even boot the system.

Power Consumption

TDP ratings are guidelines, not hard limits. A 65W chip might pull 90W under boost, while a 120W chip can spike to 140W. This matters for cooler selection and electricity bills. AMD's recent chips are remarkably efficient, with the 9700X and 9800X3D delivering high performance without silly power draws. Intel's i9-14900 can be a bit of a power hog under full load.

Common Mistakes to Avoid

Don't buy a CPU that's way more powerful than your GPU. A 9800X3D paired with an RX 6600 is silly. The GPU will bottleneck long before the CPU does. Match your processor to your graphics card and resolution. Also, don't forget to budget for a cooler if one isn't included. That £260 9700X becomes £300+ once you add proper cooling.