Intel Core i9 10900K 's Advantages
Higher specification of memory (DDR4-2933 vs DDR4-2666)
Larger memory bandwidth (45.8GB/s vs 41.6GB/s)
Larger L3 cache size (20MB vs 8MB)
Intel Core i3 10320 's Advantages
Higher base frequency (3.8GHz vs 3.7GHz)
Lower TDP (65W vs 125W)