Core Count vs. Clock Speed
Core Count vs. Clock Speed
If you're in the US, the 5800XT for $155 is presently more affordable on Amazon compared to the 5800X at $161. Both share the same CPU but the 5800X offers improved speed and a lower price point. You might also consider the 5700X for $137—it's quite similar but features less power consumption right out of the box. (Don't worry about the R7 5700 non-X; it uses a different chip and is slower than the Ryzen 5 5600.) The R5 5600 is currently priced at $123, making it significantly cheaper than the 5800X. The 5600X costs $143, which isn't worth it if you can find the non-X model for $20 less. I wouldn't suggest using the stock cooler for a 5800X, though the 3600X came with the Wraith Spire, offering better performance than the Stealth. It should still meet specifications, and a minor undervolt adjustment could be beneficial. If you plan to run these at their default settings, either the R5 5600 non-X or the R7 5700X will work well with the stock cooler. They each have a 65W TDP, so you can cap their power usage around 88W—well below what the 3600X draws under load.
However, the 5800x may perform better than the 5600x when maintained at optimal temperatures. Under correct conditions, the 5800x should operate more efficiently.