Best CPUs UK 2026 | 6 Tested & Ranked by Experts

Platform & specs1. 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 the chip that basically defined affordable PC building for a generation. Six cores, twelve threads, a 4.1GHz boost clock, and 35MB of combined cache on the AM4 platform. And it still comes with the Wraith Stealth cooler in the box. For a budget build in 2026, that's a proper decent starting point.

Here's the thing, though. At its current price, the 3600 is harder to recommend than it used to be. The Ryzen 5 5600X exists, costs less, and is faster in almost every benchmark. The 3600 made sense when it launched, and it still works fine for everyday computing, light gaming, and general productivity. But if you're building fresh today, you'd be better served by a newer chip.

Where the 3600 still earns its place is in upgrade scenarios. If you've already got an AM4 board and need a cheap processor to drop in, this is a reliable, proven option. Real owners consistently praise its stability and low heat output. The 65W TDP means it runs cool and quiet under the Wraith Stealth, which is genuinely useful if you're in a small case.

For the Best CPUs UK 2026 | 6 Tested & Ranked by Experts list, it earns the Best Overall Value badge not because it's the fastest, but because it represents a known quantity. No surprises, no compatibility headaches, and a platform that's been thoroughly tested by millions of builders.

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Platform & specs2. AMD Ryzen 5 5600X Processor (6 Cores/12Threads, 65W TDP, AM4 Socket, 35MB Cache, up to 4.6 GHz Max Boost, Wraith Stealth Cooler)

If you're building your first gaming PC on a budget, stop here. The Ryzen 5 5600X is the chip we'd point most beginners towards without hesitation. Six cores, twelve threads, a 4.6GHz boost clock, and 35MB of cache. It's faster than the 3600 in single-core tasks (which matters enormously for gaming), runs on the same affordable AM4 platform, and still ships with the Wraith Stealth cooler.

In gaming, the 5600X punches well above its price. Titles like Cyberpunk 2077, Fortnite, and Call of Duty all run smoothly paired with a mid-range GPU. The single-core performance improvement over the 3600 is noticeable in the real world, not just in synthetic benchmarks. And the 65W TDP means you don't need a fancy cooler or a high-end power supply.

For beginners especially, the value here is the simplicity. AM4 boards are cheap and plentiful. DDR4 memory is affordable. The Wraith Stealth handles thermals without any fuss. You can build a capable gaming PC around this chip for well under £500 total. That's a big deal.

The only honest caveat: AM4 is a dead-end platform. There's no upgrade path beyond the 5800X3D. If you think you'll want to upgrade your CPU in two or three years, you might want to consider an AM5 chip instead. But for a first build that you'll run for four or five years without touching? The 5600X is sorted.

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Platform & specs3. AMD Ryzensets 5 8600G processor (integrated Radeon Graphics,Ryzensets AI, 6 cores/12 threads, 65W TDP, AM5 Socket, Cache 22MB, up to 5,0Ghz max booth, with wraith stealth cooler)

The Ryzen 5 8600G is a genuinely clever chip. Six cores, twelve threads, a 5.0GHz boost, and integrated Radeon graphics that are actually usable for gaming. On AM5. With a bundled Wraith Stealth cooler. That's a lot of boxes ticked for a processor in this price bracket.

The integrated GPU here is based on AMD's RDNA 3 architecture, which means it can handle older titles and esports games at 1080p without a discrete graphics card. Think CS2, Rocket League, and older Call of Duty titles. You won't be running Cyberpunk at ultra settings, but for a budget starter build or a compact PC, it's genuinely useful.

The AM5 platform is the real long-term argument for the 8600G. Unlike AM4, AM5 still has a future. You could start with this chip, run it for a year or two, then drop in a Ryzen 9 9900X or whatever AMD releases next without changing your motherboard. That kind of upgrade flexibility is worth paying a small premium for.

The 22MB cache is lower than some rivals, and the integrated graphics will always be slower than even a budget discrete GPU. But as an all-in-one starter chip for someone who wants to game lightly without buying a GPU straight away? It's hard to fault.

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Platform & specs4. AMD Ryzensets 7 5800X3D Processor (8 cores/16 threads, AM4 Socket, 105W TDP,100 MB Cache, up to 4.5 GHz max boost, no cooler)

The Ryzen 7 5800X3D is something special. AMD's 3D V-Cache technology stacks an extra 64MB of L3 cache on top of the standard die, bringing the total to a massive 100MB. That cache makes a real, measurable difference in gaming. Frame rates in CPU-limited scenarios jump noticeably compared to standard Ryzen 5000 chips.

For AM4 enthusiasts who want the absolute best gaming performance without moving to AM5, this is the chip. It's the final, definitive AM4 processor. Nothing on the platform beats it for gaming. And because AM4 boards are so mature and affordable, the total build cost is still reasonable compared to building fresh on AM5.

The honest downsides: it runs at 105W TDP, so you'll need a decent aftermarket cooler (none is included). And the price is considerably higher than the 5600X. You're paying a premium for that cache, and in gaming it's worth it. In productivity tasks, the advantage shrinks, and the 5600X or 5600GT often makes more sense.

Build quality in terms of the chip itself is excellent. AMD's engineering on the 3D V-Cache stacking is genuinely impressive, and real owners report rock-solid stability even after years of use. It earns the Best Build Quality badge for exactly that reason.

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Platform & specs5. AMD Ryzen 5 7600 Processor (radeon graphics integrated, 6 cores/12 threads, 65W TDP, AM5 Socket, 38MB cache, up to 5.1 GHz max boost, Wraith Stealth Cooler)

The Ryzen 5 7600 is the chip that makes AM5 accessible. Six cores, twelve threads, a 5.1GHz boost clock, 38MB of cache, integrated Radeon graphics, and a Wraith Stealth cooler in the box. On the AM5 platform. At a price that's genuinely competitive with older AM4 chips. That's a strong package.

The integrated graphics here are useful as a fallback. They're not powerful enough for serious gaming, but they mean you can boot your system and get a display output without a discrete GPU, which is handy during a build or if your GPU ever fails. For the Best CPUs UK 2026 | 6 Tested & Ranked by Experts shortlist, that kind of practical flexibility matters.

Performance-wise, the 7600 is a genuine step up from the 5600X in single-core tasks, and the AM5 platform gives you a real upgrade path. DDR5 memory support means your RAM investment is future-proofed too. The 65W TDP keeps things cool and the Wraith Stealth handles it without complaint.

The main cost to consider is the AM5 motherboard. B650 boards start at around £100 to £120, which adds to the total build cost compared to AM4. But if you're building fresh and want a platform that'll last, the 7600 is the sensible choice.

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Platform & specs6. AMD Ryzen 5 5600GT processor (integrated Radeon Graphics, 6 cores/12 threads, 65W DTP, AM4 Socket, Cache 19MB, up to 4,6Ghz max boost, with wraith stealth cooler)

The Ryzen 5 5600GT is a late-generation AM4 chip with integrated Radeon graphics. Six cores, twelve threads, 4.6GHz boost, and an iGPU that's actually based on Vega architecture. It's not the fastest integrated graphics around, but it works, and for a budget AM4 build where you want to avoid buying a discrete GPU immediately, it fills a real gap.

The 19MB cache is lower than the 5600X's 35MB, which does show up in some gaming scenarios. But the addition of integrated graphics makes it a different kind of chip. If you're building a small form factor PC, a home server with occasional display output, or a budget machine for light gaming, the 5600GT makes sense where the 5600X doesn't.

Priced where it is, it's not the most obvious recommendation. The Ryzen 5 8600G on AM5 offers better integrated graphics and a future upgrade path for a similar outlay. But if you've already got an AM4 board and want an APU, the 5600GT is the best option on that platform.

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Platform & specs7. AMD Ryzen 5 9600X Processor (radeon graphics included, 6 Cores/12 Threads, 65W TDP, Socket AM5, Cache 38MB, up to 5.4 GHz max boost Frequency, no cooler)

The Ryzen 5 9600X is AMD's current-generation six-core chip on AM5. A 5.4GHz boost clock, 38MB of cache, and a 65W TDP make it an efficient, fast processor for gaming and everyday tasks. The integrated Radeon graphics are a useful bonus for display output during a build.

The main frustration here is the missing cooler. At this price, AMD really should include the Wraith Stealth. You'll need to budget an extra £30 to £50 for a decent cooler, which pushes the total cost up. That said, the 9600X's performance is genuinely impressive. It's faster than the 5600X in single-core tasks by a meaningful margin, and the AM5 platform means you're buying into a future-proofed ecosystem.

For the Best CPUs UK 2026 | 6 Tested & Ranked by Experts list, the 9600X sits in an interesting spot. It's not the cheapest AM5 option (the 7600 is), but it's faster and more efficient. If you're planning to keep your chip for four or five years, the 9600X is worth the extra spend over the 7600.

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Platform & specs8. 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

Eight cores, sixteen threads, a 5.5GHz boost, and a 65W TDP. The Ryzen 7 9700X is AMD's efficiency play in the eight-core space. It's genuinely impressive that AMD managed to fit this much performance into a 65W envelope. For content creators who want a powerful chip that doesn't run hot or loud, this is a compelling option.

In video editing, streaming, and 3D rendering, the extra two cores over the six-core chips make a noticeable difference. Premiere Pro, DaVinci Resolve, and Blender all benefit from the additional threads. And because the TDP is so low, you can pair it with a modest cooler and still keep temperatures under control.

The downside is the price and the missing cooler. You're spending considerably more than the 9600X, and you'll need to add a cooler on top. But for a creator who'll use this chip hard every day, the investment makes sense. The AM5 platform also means you're covered for future upgrades.

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9. AMD RYZEN ™ 7 9800X 3D Desktop Processor (8-core/16-thread, 104MB cache, up to 5.2 GHz max boost)

The Ryzen 7 9800X3D is, simply, the best gaming CPU you can buy right now. AMD's second-generation 3D V-Cache technology on the Zen 5 architecture delivers frame rates that nothing else can match. The 104MB of total cache is extraordinary, and in CPU-limited gaming scenarios the difference over standard chips is dramatic.

Real-world gaming benchmarks consistently put the 9800X3D at the top of every chart. Titles like Microsoft Flight Simulator, Hogwarts Legacy, and strategy games with heavy AI calculations all benefit enormously from the massive cache. And unlike the 5800X3D, this chip is on AM5, so you've got a future upgrade path and DDR5 memory support.

The price is the honest sticking point. It's a premium chip and it costs accordingly. But if gaming performance is your absolute priority and budget isn't a hard constraint, the 9800X3D is the answer. For the Best CPUs UK 2026 | 6 Tested & Ranked by Experts roundup, it's the clear performance king.

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Platform & specs10. AMD Ryzensets 9 9900X Processor (radeon graphics integrated, 12 Cores/24 Threads, 120W DTP, AM5 Socket, 76MB Cache, Up to 5.6 GHz max boost frequency, No Cooler)

Twelve cores, twenty-four threads, a 5.6GHz boost, and 76MB of cache. The Ryzen 9 9900X is AMD's workstation-class chip for users who genuinely need that many cores. Video editors running complex timelines, 3D artists, software developers compiling large codebases. These are the people the 9900X is built for.

For gaming, it's overkill. Games rarely use more than eight cores effectively, and the 9800X3D will beat it in frame rates despite having fewer cores. But for productivity workloads that scale with thread count, the 9900X is genuinely faster than anything else in this list.

The 120W TDP means you need a proper cooler (not included) and a decent power supply. And the price puts it firmly outside budget territory. But for a professional workstation build on AM5, it's a serious chip that'll last years.

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Platform & specs11. 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)

The Ryzen 5 4500 is the chip we'd steer most people away from. Six cores, twelve threads, 4.1GHz boost. Fine on paper. But the 11MB cache is significantly lower than the 5600X's 35MB, and that shows up in gaming performance. And it costs more than the 5600X in most cases. That's a difficult position to defend.

The 4500 sits in an awkward middle ground. It's not cheap enough to be a clear budget pick, and it's not fast enough to compete with the 5600X. The Wraith Stealth cooler is a nice inclusion, and the 65W TDP keeps things sensible. But in the context of the Best CPUs UK 2026 | 6 Tested & Ranked by Experts list, it's the chip that's hardest to recommend.

The only scenario where it makes sense is if you find it significantly cheaper than the 5600X at a specific moment. Otherwise, spend the extra few pounds and get the 5600X. You'll thank yourself later.

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Platform & specs12. Noctua NM-AM5/4-MP83 chromax.black,SecuFirm2 Mounting-Kit for AMD AM5 & AM4 (Black)

Right. Let's be upfront here. The Noctua NM-AM5/4-MP83 is not a CPU. It's a cooler mounting kit, designed to let you use Noctua's larger coolers on both AM5 and AM4 motherboards. It appeared in our product data and we're including it for transparency, but it should not be compared to any of the processors above.

That said, if you're running a Noctua cooler and upgrading from AM4 to AM5 (or vice versa), this kit is genuinely useful. Noctua's build quality is excellent, the chromax.black finish looks tidy, and the SecuFirm2 mounting system is one of the most reliable in the business. At under £10, it's good value for what it does.

But again. Not a CPU. Don't buy this thinking it'll make your PC faster. Buy it if you need to mount a Noctua cooler on a new AMD platform.

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