Core i9-9900K
8 cores / 16 threads, LGA1151, 95W, Coffee Lake Refresh
Used listings on eBay UK
3-month move: +0.6% (£150.11 to £150.97)
Price history
Week of 19 Oct£175.79median of 3 salesSold £160 to £180
- Target Price £155
- Week with 3+ sales
- Fewer sales
- Single sale
Show as a table
| Week of | Median | Sales |
|---|---|---|
| 23 Mar 2026 | £175.00 | 2 |
| 20 Jul 2026 | £139.91 | 4 |
| 27 Jul 2026 | £160.62 | 13 |
| 3 Aug 2026 | £172.90 | 5 |
| 10 Aug 2026 | £158.14 | 7 |
| 17 Aug 2026 | £152.37 | 10 |
| 24 Aug 2026 | £144.73 | 7 |
| 31 Aug 2026 | £139.99 | 7 |
| 7 Sept 2026 | £161.22 | 15 |
| 14 Sept 2026 | £150.82 | 11 |
| 21 Sept 2026 | £155.42 | 4 |
| 28 Sept 2026 | £183.30 | 5 |
| 5 Oct 2026 | £145.02 | 7 |
| 12 Oct 2026 | £150.97 | 8 |
| 19 Oct 2026 | £175.79 | 3 |
What the sales show
About 6 sales a week in the four weeks to 20 Oct.
Before you buy or sell a used i9-9900K
Confirm the exact suffix in the listing, as the i9-9900KF lacks integrated UHD 630 graphics, the i9-9900 is locked at 65W, and the i9-9900KS is a binned all-core 5.0 GHz edition. All three are separate parts from the 9900K.
Although it uses the LGA1151 socket, this Coffee Lake Refresh chip only works on 300-series motherboards, and Z370 boards need a BIOS update first. Intel supplied no cooler in the retail box, even in the collector dodecahedron packaging.
Recent UK sales
- 20 OctIntel Core i9-9900K Processor 8-Core up to 5.00 GHz SRG19 100% OK20 Oct£175.79
- 20 OctIntel I9-9900K 3.6GHz 9th Gen 8-Core 16-Thread CPU LGA115120 Oct£159.99
- 19 OctIntel Core i9-9900K LGA1151 CPU Processor i9 9900 K 1151 Tested 9th Gen REF:23219 Oct£179.89
- 18 OctIntel Core i9-9900K 3.6GHz 8-Core LGA1151 CPU18 Oct£159.99
- 18 OctIntel I9 9900K Intel Core Processor 9th Gen LGA1151 Socket CPU18 Oct£156.91
- 17 OctIntel Core i9 9900K 3.6GHz 8-Core 16-Thread LGA 1151 Processor17 Oct£129.42
- 16 OctIntel Core i9-9900k 8-Core 3.1GHz LGA1151 Processor CPU 16MB L3 Cache16 Oct£111.55
- 16 OctIntel Core i9-9900K 3.6GHz 8-Core 16-Thread LGA1151 CPU - Tested16 Oct£179.00
- 16 OctIntel Core i9 9900K 3.6GHz 8-Core 16-Thread LGA 1151 Processor - READ16 Oct£120.00
- 15 OctIntel Core I9-9900K 3.6GHz LGA 1151 Octa-Core Processor15 Oct£145.02
- 13 OctIntel Core i9-9900K 3.6GHz 8-Core 16-Thread LGA1151 CPU13 Oct£159.99
- 11 OctIntel Core i9-9900K 3.6GHz Processor / CPU LGA 1151 Coffee Lake Refresh11 Oct£165.79
- 11 OctIntel Core i9-9900K 3.6GHz LGA 1151 Octa-Core Processor (BX806849900K)11 Oct£139.00
- 10 OctIntel Core i9-9900K 3.6GHz 8-Core LGA1151 Desktop CPU Processor SRG19 Unlocked10 Oct£141.98
- 10 OctIntel Core i9-9900K 9th Gen 8-Core 3.60GHz LGA 1151 CPU SRG1910 Oct£145.02
