Core i9-11900K
8 cores / 16 threads, LGA1200, 125W, Rocket Lake
Used listings on eBay UK
3-month move: −11.3% (£188.50 to £167.13)
Price history
Week of 19 Oct£167.13median of 1 sale
- Target Price £180
- Week with 3+ sales
- Fewer sales
- Single sale
Show as a table
| Week of | Median | Sales |
|---|---|---|
| 20 Jul 2026 | £172.81 | 3 |
| 27 Jul 2026 | £199.39 | 4 |
| 3 Aug 2026 | £184.50 | 5 |
| 10 Aug 2026 | £191.75 | 4 |
| 17 Aug 2026 | £185.85 | 4 |
| 24 Aug 2026 | £192.32 | 7 |
| 31 Aug 2026 | £298.14 | 1 |
| 7 Sept 2026 | £175.00 | 1 |
| 21 Sept 2026 | £188.50 | 1 |
| 5 Oct 2026 | £231.57 | 2 |
| 12 Oct 2026 | £167.13 | 3 |
| 19 Oct 2026 | £167.13 | 1 |
What the sales show
About 2 sales a week in the four weeks to 20 Oct.
Before you buy or sell a used i9-11900K
Intel moved from ten cores on the 10900K to eight cores and sixteen threads on the Rocket Lake i9-11900K, adding PCIe 4.0 and a 5.3 GHz boost. The i9-11900KF without UHD 750 graphics and the 65W i9-11900 are separate parts.
Do not pair this 125W LGA1200 processor with B460 or H410 boards, as neither supports Rocket Lake. It shipped without a boxed cooler and draws heavy power under Adaptive Boost, demanding strong cooling and Z590 or updated Z490 VRMs.
Recent UK sales
- 20 OctIntel Core i9-11900K 3.5GHz (Up to 5.3GHz) LGA1200 8-Core CPU20 Oct£167.13
- 18 OctIntel Core i9-11900K 3.5GHz (Up to 5.3GHz) LGA1200 8-Core CPU18 Oct£167.13
- 14 OctIntel Core i9-11900K CPU Processor 3.5GHz LGA1200 CPU14 Oct£172.90
- 14 Oct11th Gen Intel(R) Core i9-11900K Processor (3.5 GHz, 8 Cores, 16 Logical)14 Oct£150.82
- 7 OctIntel Core i9-11900K CPU Processor 3.5GHz LGA1200 CPU7 Oct£146.09
- 27 SeptIntel Core i9-11900K 11th Gen 8-Core 3.5GHz Unlocked LGA1200 CPU27 Sept£188.50
- 12 SeptIntel Core i9-11900K Processor - USED12 Sept£175.00
- 29 AugIntel Core i9-11900K 8-Core 3.50GHz LGA1200 Processor CPU SRKND29 Aug£148.92
- 29 AugIntel Core I9 11900K LGA1200 11th Gen CPU Processor29 Aug£181.20
- 26 Aug1x INTEL CORE i9-11900K SRKND 3.5Ghz LGA1200 CPU Hardware for Server26 Aug£192.32
- 26 AugIntel Core I9 11900K 3.5GHz LGA 1200 Processor CPU26 Aug£215.40
- 25 AugIntel Core i9-11900K CPU Processor25 Aug£204.10
- 24 AugIntel Core i9-11900K 11th Gen 8-Core 3.50GHz LGA1200 CPU SRKND24 Aug£147.74
- 23 AugIntel Core i9 11900K CPU Processor23 Aug£203.17
- 19 AugIntel - Core i9-11900K Processor (8C/ 16T), 11th Gen Socket LGA 1200.19 Aug£189.00
