The design of the z13 Systems processor unit (PU) chip has been enhanced over the zEC12.
Which of the following characterizes the improvement?
A . Faster processor cycle time on z13 (5.5 GHz instead of 5.0 GHz on zEC12).
B . Improved cryptographic and compression engine shared over all cores.
C . Larger cache level sizes on z13 compared to zEC12.
D . Up to six active cores per chip on z13 compared to four active cores on zEC12.
Answer: C
Explanation:
Contributing to the additional capacity on the z13 and z13s are numerous improvements in processor chip design, including new instructions, multithreading, and redesigned and larger caches.
Z13 processor:
* L1 cache
96 KB I-L1
128 KB D-L1 per core
* L2 cache
2 MB I-L2
2 MB D-L2 per core
L3 cache 64 MB shared
zEC12 processor:
L1 cache64+96 KB/core
L2 cache1+1 MB/core
L3 cache48 MB/chip
References:
https://en.wikipedia.org/wiki/IBM_zEC12_(microprocessor)
https://en.wikipedia.org/wiki/IBM_z13_(microprocessor)