Best CPUs UK 2026 | 6 Tested & Ranked by Experts

1. AMD Ryzen 5 5600X Processor Review UK 2025

The Ryzen 5 5600X remains the sweet spot for best CPUs UK in 2026. This Zen 3 processor delivers brilliant gaming performance at 1080p and 1440p, often matching or beating more expensive chips in real-world scenarios. Six cores and twelve threads handle modern games without breaking a sweat, whilst the 4.6GHz boost clock keeps frame rates consistently high.

What makes this CPU special is its efficiency. The 65W TDP means it runs cool with basic air cooling, and you won’t need an expensive motherboard to get the most from it. Any decent B550 board will do the job. I tested it with a mid-range RTX 4060 Ti, and it never bottlenecked the GPU, even in CPU-intensive titles like Cyberpunk 2077 and Microsoft Flight Simulator.

Gaming aside, the 5600X handles productivity tasks brilliantly. Video editing in DaVinci Resolve felt snappy, and compiling code was noticeably faster than the older 3600. It’s not the fastest for heavy rendering work (the 9700X beats it there), but for most users, it’s more than enough. The AM4 platform also means cheaper DDR4 RAM and motherboards compared to AM5 builds.

At £215, it’s positioned perfectly between budget and premium options. You’re getting 90% of the gaming performance of chips costing twice as much. The only real downside? No integrated graphics, so you’ll need a dedicated GPU. But if you’re building a gaming PC, that’s a given anyway. 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 want the absolute best gaming CPU money can buy, the Ryzen 7 9800X 3D is it. AMD’s 3D V-Cache technology stacks additional L3 cache directly onto the processor die, and the results are frankly ridiculous. In CPU-bound games like Total War and Cities: Skylines, it delivers frame rates 15-20% higher than standard processors. That’s a proper generational leap.

The Zen 5 architecture underneath is already brilliant, with eight cores running up to 5.2GHz. But it’s that massive cache that makes the difference in gaming. Frame time consistency is exceptional, meaning smoother gameplay even when things get hectic on screen. I paired it with an RTX 4090, and it never once held back that monster GPU, even at 1440p high refresh rates.

Here’s the thing though: at £399, it’s expensive. Really expensive. You’re paying a premium for that 3D V-Cache technology, and for most gamers, the 5600X will deliver 85% of the performance for half the price. But if you’re building a no-compromise gaming rig, streaming on Twitch, or just want bragging rights, this is the one to get.

The 120W TDP means you’ll need decent cooling (a quality tower cooler or 240mm AIO minimum), and you’ll want a good B650 or X670 motherboard to handle the power delivery. The integrated graphics are basic but handy for troubleshooting. We covered this extensively in our AMD Ryzen 7 9800X 3D review, including detailed gaming benchmarks across 15 titles.

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

The Ryzen 7 9700X is where AMD’s Zen 5 architecture really shines for content creators. Eight cores and sixteen threads make light work of video editing, 3D rendering, and heavy multitasking. That 5.5GHz boost clock is the highest in this roundup, and you feel it when exporting 4K timelines or compiling large projects.

What impressed me most was the efficiency. Despite that high boost clock, the TDP is just 65W, same as the 5600X. My test system stayed whisper quiet under load with a basic tower cooler, and power consumption was noticeably lower than Intel’s equivalent offerings. For creators running long renders overnight, that efficiency translates to lower electricity bills.

Gaming performance is strong too, though not quite at the 9800X 3D’s level. In most titles, you’re looking at 5-10% lower frame rates compared to the 3D V-Cache chip, but still excellent results overall. The integrated Radeon graphics are basic but useful for video previews and troubleshooting when your GPU is busy rendering.

At £277, it sits in an interesting spot. It’s more expensive than the 5600X but offers better multi-threaded performance for creative work. If you’re primarily gaming, save the money and get the 5600X. But if you’re editing videos, streaming, or running virtual machines, those extra cores justify the premium. Our AMD Ryzen 7 9700X review includes rendering benchmarks and power consumption analysis.

4. AMD Ryzen 5 3600 Processor Review UK 2026

The Ryzen 5 3600 is proper old now (launched in 2019), but at £81, it’s still one of the best budget CPUs UK has to offer. Six cores and twelve threads handle modern games surprisingly well, especially at 1080p where GPU bottlenecks are more common. I tested it with an RTX 4060, and in most titles, frame rates stayed above 60fps on high settings.

Look, you’re not getting modern performance here. The Zen 2 architecture is three generations old, and that 4.2GHz boost clock feels modest compared to newer chips. But for first-time builders or strict budget builds, it’s remarkable value. Pair it with 16GB of DDR4 RAM and a decent GPU, and you’ve got a capable gaming PC for under £500 total.

The platform is the real limitation. AM4 motherboards are still available, but you’re investing in a dead-end socket with no meaningful upgrade path. And there’s no integrated graphics, so you absolutely need a dedicated GPU. But if you’re building a gaming PC anyway, that’s not really a problem.

For productivity work, it’s adequate but not brilliant. Video editing is possible but slow compared to newer chips. If you’re doing serious content creation, spend more on the 9700X. But for gaming, web browsing, and general use, the 3600 still delivers. We tested it extensively in our AMD Ryzen 5 3600 review, including budget build recommendations.

5. AMD Ryzen 5 5600GT Processor Review UK 2026

The Ryzen 5 5600GT is a bit of an oddball in the best CPUs UK lineup. It’s essentially a 5600X with integrated Radeon graphics, making it one of the few AMD processors that can run without a dedicated GPU. At £131, it fills a specific niche: budget builds that need display output without buying a graphics card immediately.

The integrated graphics are surprisingly capable for basic tasks. You can play esports titles like CS2, Valorant, and League of Legends at 1080p low settings with playable frame rates. It’s not going to run Cyberpunk or anything demanding, but for casual gaming or as a temporary solution whilst saving for a proper GPU, it works.

CPU performance matches the standard 5600X closely. Six Zen 3 cores running up to 4.6GHz deliver solid gaming performance when paired with a dedicated GPU later. The 65W TDP keeps things cool and quiet, and it works with any AM4 motherboard. So you could start with integrated graphics, then add a GPU when prices drop or your budget allows.

The problem is the price. At £131, you’re only £84 away from the superior 5600X. If you’re building a gaming PC, you’ll need a GPU eventually anyway, so why not just buy a cheaper CPU and put that money towards a better graphics card? The 5600GT makes sense for office PCs or media centres, but for gaming builds, I’d rather see you get the 3600 and a budget GPU. Check our AMD Ryzen 5 5600GT review for integrated graphics benchmarks.

6. Intel Core i5-14600K Performance Review 2024

Intel’s i5-14600K is their best mid-range offering in the best CPUs UK roundup. The hybrid architecture combines six performance cores with eight efficiency cores, giving you fourteen cores and twenty threads total. That’s more cores than any AMD chip here, and it shows in heavily multi-threaded workloads like video rendering and code compilation.

Gaming performance is strong, though not quite at AMD’s level. The high 5.3GHz boost clock on the P-cores delivers excellent single-threaded performance, but in CPU-intensive games, the 9800X 3D and even the 5600X often pull ahead slightly. Where the 14600K excels is productivity: those extra efficiency cores handle background tasks brilliantly whilst you’re gaming or working.

The integrated UHD Graphics 770 is more capable than AMD’s basic iGPUs, useful for video encoding and QuickSync acceleration. But let’s be honest, if you’re spending £245 on a CPU, you’re buying a dedicated GPU anyway. The real appeal is that hybrid architecture for content creators who game on the side.

Downsides? The 125W TDP runs hot, and you’ll need a beefy cooler to keep temperatures reasonable. The LGA1700 platform also requires DDR5 RAM (expensive) and a Z690/Z790 motherboard to unlock overclocking. Total platform cost is higher than equivalent AMD builds. At £245, it’s decent value for productivity-focused users, but for pure gaming, AMD offers better bang for buck. See our Intel Core i5-14600K review for thermal testing and overclocking results.