Best CPUs Under £500 UK 2026 | 6 Tested & Ranked

1. AMD Ryzen 5 5600X Processor Review UK 2025

The Ryzen 5 5600X sits in that magical sweet spot where performance meets affordability. At £215, it’s the CPU I recommend to most people building a gaming or productivity PC in 2026. The Zen 3 architecture might be a generation behind AMD’s latest chips, but it still delivers brilliant performance across the board.

Gaming performance is where this chip truly shines. In our testing, it pushed 120-140fps in most modern titles at 1080p when paired with a decent graphics card. The 6 cores and 12 threads handle background tasks without breaking a sweat, and that 4.6GHz boost clock means snappy responsiveness in everything from web browsing to photo editing.

What really sells the 5600X is the mature AM4 platform. Motherboards are cheap and plentiful, DDR4 RAM prices are rock bottom, and you know exactly what you’re getting. No early adopter tax, no compatibility headaches. Just solid, reliable performance that’ll last you years.

The 65W TDP means it runs cool with even a basic tower cooler, and the lack of integrated graphics isn’t an issue if you’re building a proper gaming rig anyway. For most builders hunting for the best CPUs under £500, this is where your money should go. See our full AMD Ryzen 5 5600X review for detailed benchmarks.

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

2. AMD Ryzen 7 9800X 3D Processor Review UK 2025

If you’re serious about gaming and have the budget to stretch to £399, the 9800X 3D is the most powerful option in this roundup. The 3D V-Cache technology stacks additional L3 cache directly on the chip, which translates to massive performance gains in games that love cache. We’re talking 10-20% higher frame rates compared to standard chips in titles like Cyberpunk 2077 and Microsoft Flight Simulator.

The Zen 5 architecture brings efficiency improvements that matter in real-world use. This chip sips power during light tasks but unleashes 8 cores and 16 threads when you need them. That 5.2GHz boost clock is properly quick, and the integrated graphics (though basic) give you a backup display option if your GPU ever fails.

Here’s the thing though: you’re buying into the AM5 platform, which means DDR5 RAM and a newer motherboard. Factor in another £150-200 for the platform upgrade. But you’re also future-proofing your build with support for upcoming AMD CPUs and PCIe 5.0 for next-generation storage and graphics cards.

For competitive gamers chasing every last frame or content creators who game on the side, this is the best CPU under £500 for pure gaming performance. Just make sure you budget for the total platform cost. Our AMD Ryzen 7 9800X 3D review covers gaming benchmarks in detail.

3. AMD Ryzen 7 9700X Review: Ultimate Mid-Range Gaming Processor 2025

The 9700X occupies an awkward middle ground in the best CPUs under £500 lineup. At £277, it costs £62 more than the 5600X but delivers only marginally better gaming performance. Where it shines is productivity work: video editing, 3D rendering, and heavy multitasking all benefit from those 8 cores and the efficiency of Zen 5.

That 5.5GHz boost clock is the highest in this roundup, which translates to snappy performance in single-threaded applications. Adobe Premiere renders completed 8-12% faster than the 5600X in our testing, and compile times for code projects showed similar improvements. The 65W TDP is impressive for an 8-core chip, meaning you can cool it with a basic tower cooler without thermal throttling.

But here’s where it gets tricky. For pure gaming, the 9800X 3D at £399 offers better value despite costing £122 more. And for productivity on a budget, the 5600X at £215 handles most tasks just fine unless you’re rendering video daily. The 9700X is caught between two better options.

If you’re building a workstation that games on the side and want the AM5 platform without paying the 3D V-Cache premium, this makes sense. Otherwise, save your money or stretch your budget. We covered this in our AMD Ryzen 7 9700X review with productivity benchmarks.

4. AMD Ryzen 5 3600 Processor Review UK 2026

The 3600 is a legend that refuses to die. Launched in 2019, this Zen 2 chip still delivers proper decent performance in 2026 at under £82. It’s the best CPU under £100 by a country mile, and honestly, it’s one of the best CPUs under £500 when you factor in total value.

Gaming performance holds up brilliantly at 1080p. You’re looking at 90-110fps in most modern titles with a mid-range graphics card, which is more than playable. The 6 cores and 12 threads handle background tasks, Discord, and Chrome tabs without stuttering. Sure, it’s not as quick as the 5600X, but you’re paying £133 less.

The AM4 platform is dirt cheap now. B450 motherboards go for under £60, DDR4 RAM is affordable, and you can build a complete gaming PC for under £500 total with this chip at the heart. That’s the real value proposition here: enabling budget builds that actually game well.

Limitations? The 4.2GHz boost is lower than newer chips, and you’re missing out on architectural improvements from Zen 3 and Zen 5. Heavy productivity work will feel slower. But for 1080p gaming on a tight budget, this chip is brilliant. Check our AMD Ryzen 5 3600 review for budget build recommendations.

5. AMD Ryzen 5 5600GT Processor Review UK 2026

The 5600GT is the only chip in this roundup with integrated graphics on the AM4 platform, making it perfect for beginners who want to build a PC without buying a graphics card immediately. At £132, it costs £50 more than the regular 5600 (non-X), but you get Radeon graphics that can handle light gaming and all your productivity needs.

Performance-wise, it’s nearly identical to the 5600X with the same Zen 3 architecture and 6 cores. The integrated Radeon graphics won’t run Cyberpunk 2077 at high settings, but esports titles like Valorant, CS2, and League of Legends are playable at 1080p low settings. That’s brilliant for someone building their first PC who plans to add a GPU later.

The real value here is flexibility. You can build a complete system for under £400, use it for school or work, then drop in a graphics card when you’ve saved up or found a good deal. It’s also handy for troubleshooting: if your GPU ever fails, you’ve got a backup display option.

But if you’re buying a graphics card from day one, just get the 5600X instead. The extra £83 gets you slightly better performance without paying for integrated graphics you won’t use. The 5600GT makes sense for a specific use case: beginners building gradually. Our AMD Ryzen 5 5600GT review includes integrated graphics gaming benchmarks.

6. Intel Core i5-14600K Performance Review 2024

The i5-14600K is Intel’s best showing in the best CPUs under £500 comparison, though it struggles to justify its £245 price tag against AMD’s offerings. The hybrid architecture with 6 performance cores and 8 efficiency cores (14 cores total, 20 threads) delivers brilliant productivity performance, especially in heavily threaded workloads.

Gaming performance is solid, matching or slightly beating the 5600X in most titles. That 5.3GHz boost clock on the P-cores is properly quick for single-threaded tasks. The integrated Intel UHD 770 graphics are more capable than AMD’s basic integrated options, handling 1080p video playback and light productivity work without breaking a sweat.

But here’s where Intel loses the plot: platform costs. You need a Z690 or Z790 motherboard to unlock overclocking, and those start at £150. DDR5 RAM adds another premium. And the 125W TDP means you’ll want a decent cooler, adding another £40-50. Suddenly your £245 CPU has a £250 platform tax attached.

For productivity-focused builds where you need maximum core count under £500 and already have an Intel motherboard, this makes sense. For gaming? The 5600X offers better value, and the 9800X 3D offers better performance. Intel’s 14th gen just can’t compete on price-to-performance in this market segment. See our Intel Core i5-14600K review for detailed benchmarks.