I have https://www.bykski.us/collections/tr4/products/bykski-a-ryzen-tech-x-cpu-water-cooling-block-w-temp-digital-display-black-am3-am4-tr4 and it's perfectly fine for TR. No point to spend 20$ more for CPU block when there is another option on the market for a long time. Ordered from China and I'm using it for 8 months now. No leaks and temps are perfect.

I couldn't personally be more happy with my EK Velocity POM/Nickel RGB block. 3960X doesn't see temps past 55-60C when loaded a hundred percent! 4.4ghz 48 threads baby!!