Does it have more l2 or l3 cache to mitigate this? are there any benchmarks where this has a large effect? Is the I9 with 6 cores still faster than the I7 with

Does it have more l2 or l3 cache to mitigate this? are there any benchmarks where this has a large effect? Is the I9 with 6 cores still faster than the I7 with 4 across the board? With more cores memory bandwidth does start to become more and more of an issue...