According to early Canadian listings, the core i9-13900K/KF processor could have maximum boost frequency as high as 5.80 GHz. 

This is the maximum clock speed that the processor's "Raptor Cove" P-cores can sustain with its best available boosting algorithm. The listing also shows the Core i7-13700K/maximum KF's boost frequency as 5.40 GHz. Besides lower frequencies, Intel usually gives their unlocked Core i7 SKUs one less boosting algorithm than the Core i9. The Core i5-13600K, the series' fastest mid-range processor, runs at speeds of up to 5.10 GHz. The Core i9-13900K costs CAD $941 (USD $727), the i9-13900KF costs CAD $901 (USD $696), the Core i7-13700K costs CAD $663 (USD $512), and the i7-13700KF costs CAD $626 (USD $484). The Core i5-13600K costs CAD $461 ($356), and the i5-13600KF costs CAD $424 (USD $327). These prices may appear to be high because they are pre-launch listings, and hardware in Canada is slightly more expensive than in the USA. Based on the 12th Generation Alder Lake launch costs, Intel appears to be upping the launch prices of Raptor Lake.

Maximum Boost Frequencies and Prices of Raptor Lake SKUs Listing at Canadian Retailer