It's a 25MHz 020. The LCII had a 16MHz 030. This card is faster.
The 030 added MMU, burst mode, an addition 256bytes of data cache, and a slight increase in instruction execution time ("more done per clock cycle"). For most users of the LCII, the MMU wasn't used, the LCII's memory controller didn't support burst mode AFAIK, so you're left with the data cache and a slight per-cycle performance increase in the 030.
This turns my stomach to do such coarse calculations, but I'm doing it anyway to demonstrate. The 030 is rated at 18 MIPS @ 50Mhz. The 020 is rated at 18 MIPS @ 33MHz. So 030 at 16Mhz is 5.76 MIPS and the 020 at 25Mhz is ~7.6 MIPS. So, in practical terms, the only thing being lost is the 256 bytes of data cache, and trading it for ~25% faster execution.
The 030 added MMU, burst mode, an addition 256bytes of data cache, and a slight increase in instruction execution time ("more done per clock cycle"). For most users of the LCII, the MMU wasn't used, the LCII's memory controller didn't support burst mode AFAIK, so you're left with the data cache and a slight per-cycle performance increase in the 030.
This turns my stomach to do such coarse calculations, but I'm doing it anyway to demonstrate. The 030 is rated at 18 MIPS @ 50Mhz. The 020 is rated at 18 MIPS @ 33MHz. So 030 at 16Mhz is 5.76 MIPS and the 020 at 25Mhz is ~7.6 MIPS. So, in practical terms, the only thing being lost is the 256 bytes of data cache, and trading it for ~25% faster execution.