It is officially annouced by AMD that its Ryzen 3000XT 'Mattise Refresh' series is lined up a few weeks back where its consists of three processors based on the 7nm Zen 2 architecture but feature an enhanced design which allowed them to be having a higher boost than their Ryzen 3000X series.
It is spotted on Geekbench that this Ryzen 3000XT series processors had some performance benchmarks by TUM_APISAK. Each of the CPU had been benchmarked using the same platform hence the performance should be somewhat consistent which is using Gigabyte X570 AORUS Master motherboard with 64GB of DDR4-3200 memory as its setup.