AMD Ryzen 9 9900X 12-Core 24-Thread 5.6GHz AM5 Zen 5 CPU w/ Original Box Tested for Sale

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AMD Ryzen 9 9900X 12-Core 24-Thread 5.6GHz AM5 Zen 5 CPU w/ Original Box Tested For Sale

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AMD Ryzen 9 9900X 12-Core 24-Thread 5.6GHz AM5 Zen 5 CPU w/ Original Box Tested:
$369.00

AMD Ryzen 9 9900X — 12 cores / 24 threads, up to 5.6 GHz boost, Socket AM5, Zen 5 "Granite Ridge".

Used for a few months in my own workstation and pulled on 2026-10-09 only because I upgraded to a 9950X3D. It ran at stock settings (no overclock, PBO default) under a 360 mm AIO as a Linux inference/media server — rock stable the entire time. Tested working right before removal.

What you get: the CPU in its ORIGINAL retail box (100-100000662WOF; no cooler — this SKU never ships one). Pads are clean and undamaged; the heat spreader has had its thermal paste cleaned off with isopropyl alcohol. Photos are manufacturer stock images; actual-unit photos available on request before you buy.

Key specs: 12C/24T, 4.4 GHz base / 5.6 GHz boost, 64 MB L3 + 12 MB L2, 120 W TDP, DDR5-5600 dual-channel, PCIe 5.0 (28 lanes), integrated Radeon graphics, AVX-512. Drops into any AM5 board (X670/B650/X870/B850) — check your board's BIOS supports 9000-series.

Ships in an anti-static clamshell inside a padded box within 1 business day, tracked. From a smoke-free home lab in California. Questions welcome.