With a perfect cache

CPIbase = 1.5

1.4 MemAccess / instruction

Compare two 128 KB caches

64-byte blocks

Miss penalty = 60 ns

Cache 1:

Direct mapped

Miss rate = 2.1%

CC(1-way) = 0.30 ns

HT = 1 CC(1-way)

Cache 2:

2-way set associative

CC(2-way) = 1.30 CC(1-way)

Miss rate = 1.9%

HT = 1 CC(2-way)

Question: What is AMAT of Cache 1 (direct mapped)? Choose the closest value.

1.50 ns

1.53 ns

1.56 ns

1.60 ns