Harris Technology are selling AMD chips at near lowest prices for some time if used with the supplied code.
- 8-core 3700X $437.94 with coupon
- 6-core 3600 $265.50 with coupon
- 8-core 3800X $479.70 with coupon
- 6-core 5600X $472.32 with coupon
The best value is the 3600, but the best price drop might have to be the 3700X and if you're wondering how much better the 3800X is, articles say it is only 6% faster than the 3700X.
Note that the 5600X is about as powerful as a 3700X with all cores, but about 20% faster single-core. I can't say if it comes with a cooler.