The i37100 is an lga1151 interface CPU. 7100 is a processor that does not support overclocking, positioning the mid-end mainstream, more suitable for b250 motherboard.
Only the same pin CPU and motherboard can be matched, different pins can not be matched.
The I3 7100cpu belongs to the seventh generation core cpu series, using the lga-1151 pin socket, while the H81 motherboard is the fourth generation core chipset motherboard, supporting the lga1150 pin cpu, the two are incompatible, so the h81 motherboard can not be matched with the 37100 CPU.