If the GeekBench readouts are accurate, the Tiger Lake-Y mobile parts wil have more L1D (data) cache, a 400 percent increase in L2 cache, and a 50 percent increase in L3 cache:
According to this listing, assuming Geekbench is reading the platform correctly; the "Tiger Lake-Y" processor features a 4-core/8-thread CPU, with a massive 1,280 KB (1.25 MB) of L2 cache per core, and 12 MB of L3 cache. Intel also enlarged the L1D (data) cache to be 48 KB in size, while the L1I (instruction) cache remains 32 KB. This amounts to a 400% increase in L2 cache size, and a 50% increase in L3 cache size. Unlike with "Skylake-X," the increase in L2 cache size doesn't come with a decrease in shared L3 cache size (per core).Via: TechPowerUp