A Closer Look
AMD Ryzen 9 3900XT ships in an upscale-looking paperboard box with a cutout showing the processor inside, which is identical-looking to the one the flagship Ryzen 9 3950X comes in. The box does not include a cooler inside.
The processor looks like any conventional AMD CPU with a large IHS dominating the top, and a 1,331-pin micro-PGA in the bottom. The "Zen 2" CCD chiplet is made in Taiwan and the I/O die in the US, and the two are put together at a facility in China.
All Ryzen 3000XT series processors are designed to be drop-in compatible with any Socket AM4 motherboard that supports Ryzen 3000 processors.
Ryzen 9 3900XT can be paired with a fairly big selection of AM4-compatible coolers that have been released since 2017.