10 min read
Seller Guides2026-04-05
Sell Used CPUs in the UK: Complete Seller Guide (2026)
UK seller's guide to getting the best price for your used CPU. Covers timing, pricing, packaging, safe shipping, and avoiding common mistakes.
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Kou's Blog
Access the latest hardware benchmarks, market analysis, and guides.
11 min read
Buying Guides2026-04-05
10 Best Used CPUs to Buy in 2026: Ranked by Value
The definitive ranked list of the best value used CPUs you can buy in the UK in 2026, from budget options to high-end gaming and workstation processors.
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10 min read
Buying Guides2026-04-05
Buy Used SSDs in the UK: Safety & Health Guide
A UK buyer's guide to purchasing used SSDs safely. Covers TBW ratings, health checks with CrystalDiskInfo, testing on arrival, and scam avoidance.
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12 min read
Buying Guides2026-04-05
Buy Used Motherboards in the UK: Inspection & Safety Guide
A UK buyer's guide to used motherboards. Covers VRM inspection, capacitor bulge detection, socket compatibility, and what to check before paying.
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11 min read
Buying Guides2026-04-05
Used PSU Buying Guide UK: Safety & Reliability (2026)
A comprehensive UK guide to buying used power supplies safely. Covers risk assessment, 80+ ratings, age limits, testing, and why PSU safety matters.
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13 min read
Build Guides2026-04-05
How to Test Used PC Parts: Complete Testing Guide
A comprehensive guide to testing all used PC components before committing. Tools, techniques, and benchmarks for GPU, CPU, RAM, SSD, motherboard, and PSU.
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12 min read
Market Analysis2026-04-05
Intel vs AMD Used CPUs 2026: Platform Analysis & Value
A 2026 deep-dive into the used CPU market: AM4 vs LGA1700 platforms compared, pricing trends, future-proofing, and which platform offers the best value.
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10 min read
Market Analysis2026-04-05
Is the RTX 4070 Worth Buying in 2026?
A 2026 verdict on the used RTX 4070: performance benchmarks, UK pricing, power efficiency, and how it compares to current alternatives for gaming.
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13 min read
Build Guides2026-04-05
Build a Gaming PC with Used Parts: Complete UK Guide
Three complete used-parts gaming PCs builds: budget (£180), mid-range (£280), and performance (£420). Part lists, compatibility, and expected FPS.
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11 min read
Buying Guides2026-04-05
Used PC Parts Consumer Rights UK: Know Your Legal Protection
Your legal rights when buying used PC parts in the UK under the Consumer Rights Act 2015. Covers warranties, returns, dispute resolution, and payment protection.
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12 min read
Build Guides2026-03-29
PC Parts Compatibility Guide: What Works Together (UK 2026)
The complete UK reference for PC parts compatibility. CPU sockets, RAM types, GPU clearances, PSU requirements, and more — plus a free compatibility checker tool.
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11 min read
Build Guides2026-03-29
How to Check If Your PC Parts Are Compatible (UK Guide 2026)
Step-by-step guide to checking PC parts compatibility before you buy. Covers every component from CPU to case, with a free online checker tool.
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13 min read
Build Guides2026-03-29
15 First PC Build Mistakes Every Beginner Makes (And How to Avoid Them)
The most common mistakes first-time PC builders make in 2026 — from incompatible parts to forgotten cables. Practical UK advice to get it right first time.
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16 min read
Market Analysis2026-03-13
Used PC Parts Price Guide UK: What Everything Is Worth (2026)
The definitive UK pricing reference for used GPUs, CPUs, RAM, storage, motherboards, PSUs, and more — based on real sold data from March 2026.
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11 min read
Seller Guides2026-03-13
Where to Sell Used PC Parts in the UK (2026 Guide)
The definitive UK guide to selling used PC parts in 2026. Compare Koukan, eBay, Facebook Marketplace, Gumtree, CeX, and Reddit with honest fees, sell times, and safety ratings.
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10 min read
Seller Guides2026-03-13
How to Sell a Used GPU in the UK for the Best Price (2026)
UK seller's guide to getting the best price for your used graphics card. Covers timing, pricing, listing tips, safe packaging, shipping, and avoiding scams.
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12 min read
Market Analysis2026-03-13
How Much Is My Used GPU Worth? UK Pricing Guide (2026)
Find out what your used graphics card is worth in the UK in 2026. Real sold prices for every major GPU from RTX 30-series to RX 7000, plus factors that raise or drop value.
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12 min read
Buying Guides2026-03-13
How to Buy a Used Gaming PC in the UK Without Getting Burned
A UK buyer's complete guide to purchasing a second-hand gaming PC. What to check, red flags, pricing, testing, and where to buy safely in 2026.
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13 min read
Build Guides2026-03-13
Build a Cheap Gaming PC with Used Parts: UK Guide (2026)
How to build a capable gaming PC for under £300 using used parts in the UK. Three real builds at £150, £250, and £350 with part-by-part sourcing advice.
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10 min read
Buying Guides2026-03-13
Buy Used RAM in the UK: DDR4 vs DDR5 and What to Check
A UK buyer's guide to purchasing used RAM safely. Covers DDR4 vs DDR5, compatibility checks, speed ratings, pricing, and how to test on arrival.
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14 min read
Buying Guides2026-03-13
10 Best Used GPUs to Buy in 2026: Ranked by Value
The definitive ranked list of the best value used graphics cards you can buy in the UK in 2026, from budget 1080p to high-end 4K gaming.
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12 min read
Seller Guides2026-03-13
How to Sell Your Old Gaming PC in the UK (Complete Guide)
Complete UK guide to selling your old gaming PC in 2026. Whether to sell whole or in parts, pricing, where to list, photos, safe shipping, and avoiding scams.
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11 min read
Build Guides2026-03-13
How to Upgrade Your Gaming PC on a Budget (UK 2026)
A practical UK guide to upgrading your gaming PC without overspending. Diagnose the real bottleneck, buy used, and get the maximum FPS per pound.
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8 min read
Seller Guides2025-12-13
Complete Seller Guide: Keep 100% of Your Earnings
Master selling on Koukan with our comprehensive guide. Learn to maximize profits, handle shipping, build reputation, and leverage our zero-fee model.
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8 min read
Buying Guides2025-12-13
Complete Buyer Guide: Navigating Koukan with Confidence
Master buying on Koukan with our comprehensive guide. Learn how to find the best deals, evaluate sellers, and make secure purchases.
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12 min read
Comparisons2026-02-05
Koukan vs eBay vs Facebook Marketplace: Where Should You Buy Used PC Parts?
An honest UK comparison of fees, protections, verification, and listing quality—so you can pick the right marketplace for your risk level.
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11 min read
Buying Guides2026-02-05
How to Buy Used PC Parts Safely in the UK (2026 Guide)
A UK-first guide to buying used components safely: what’s safe to buy used, what to check, where to shop, and how to avoid scams.
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12 min read
Buying Guides2026-02-05
Buying a Second-Hand PC in the UK: What to Check Before You Buy
A practical UK checklist for buying a second-hand PC: what to ask, what to test, red flags to avoid, and how to pay safely.
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10 min read
Buying Guides2026-02-05
Buy Used GPUs in the UK: Safe Buying Guide for Gamers
A UK gamer’s guide to buying a used GPU safely: proof to request, red flags to avoid, and the checks that catch unstable cards.
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9 min read
Buying Guides2026-02-05
Are Used GPUs Worth Buying in 2026?
A 2026 reality-check for UK buyers: when used GPUs are brilliant value, when the risk is too high, and how to decide fast.
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12 min read
Buying Guides2026-02-05
How to Test a Used GPU Before Buying (UK Buyer Guide)
A step-by-step UK test plan for used GPUs: what to ask before paying, what to check on pickup, and what to run on arrival.
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10 min read
Buying Guides2026-02-05
Buy Used CPUs Online in the UK: What You Need to Know
A UK buyer guide to used CPUs: compatibility checks, pin damage risks, safe shipping/packaging, and quick arrival tests.
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10 min read
Buying Guides2026-02-05
Which PC Parts Are Safe to Buy Used — and Which Aren’t?
A skimmable risk guide for UK buyers: which parts are safe used, which need caution, and which to avoid unless you have proof.
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10 min read
Buying Guides2026-02-05
Is It Safe to Buy Used PC Parts in the UK?
A UK-focused risk-and-trust framework for buying used components safely, with practical steps that reduce scams and dead-on-arrival parts.
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11 min read
Buying Guides2026-02-05
How to Avoid Scams When Buying Used PC Parts Online
A UK checklist for spotting fake listings, risky sellers, and payment traps—plus what to do if something goes wrong.
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10 min read
Buying Guides2026-02-05
Best eBay Alternatives for Buying Used PC Parts in the UK
A UK guide to safer places to buy used PC parts, with a quick comparison of protections, pricing pressure, and best-use cases.
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14 min read
Market Analysis2026-01-20
The RTX 3070 in 2026: The Unbeatable Budget Upgrade
Why the used market offers incredible value for 1080p and entry 1440p gaming. A complete analysis of the RTX 3070's resurgence in 2026.
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12 min read
Build Guides2025-12-07
Best GPU & CPU Combinations December 2025
Updated guide to perfect hardware pairings. RTX 50 series, RX 9000 lineup, Ryzen 9800X3D combinations with current UK pricing and DDR5 crisis analysis.
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6 min read
Market Analysis2025-12-05
PC Parts Market Trends: December 2025
Latest pricing trends, upcoming releases, and market analysis. What to buy now vs what to wait for.
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8 min read
Reviews2026-01-07
The £150 Console Killer: Resurrecting the AMD BC-250
How to build a console-class gaming PC for under £150 using the repurposed AMD BC-250 mining card. A complete guide to the hardware, performance, and Bazzite Linux setup.
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15 min read
Reviews2025-12-04
AMD Ryzen 7800X3D: The Ultimate Gaming CPU?
Complete review of AMD's gaming-focused processor. Benchmarks, compatibility, and whether it's worth the premium price.
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10 min read
Buying Guides2025-12-03
Best Graphics Cards Under £500 (2025 Guide)
Discover the top graphics cards offering the best performance per pound in 2025. From budget 1080p gaming to competitive 1440p performance.
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14 min read
Comparisons2025-12-02
RTX 4090 vs RTX 4080: Which Should You Buy?
In-depth comparison of NVIDIA's flagship cards. Performance benchmarks, value analysis, and real-world gaming tests.
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