C4040-250 Latest Exam Braindumps
Question 8: Upon meeting in an elevator, a customer's senior executive asks an IBM sales agent to explainin one sentence why POWER8 systems are superior to x86 solutions.
Which statement best represents the Power Systems value proposition?
A. IBM POWER8 servers deliver a lower TCO with unparalleled system reliability.
B. x86 technology is reaching chip design limitations and x86 performance has not increased
proportionality to the chip core count, which results in higher software costs.
C. Regardless of the benchmark used, IBM POWER8 has proven to be the fastest performing server
chip in the industry.
D. The IBM POWER8 processor is Purpose Built resulting in premium performance over x86, which
results in lower TCA and TCO.
Correct Answer: D
Explanation:
Sandy Bridge EP E5-26xx Ivy Bridge EP E5-26xx v2 Haswell EP E5-26xx v3 Ivy Bridge EX E7-88xx v2
POWER 7+ POWER8
Clock rates
1.8-3.6GHz 1.7-3.7GHz 1.7-3.7GHz 1.9-3.4 GHz 3.1-4.4 GHz 3.0-4.15 GHz
SMT options
1,2* 1, 2* 1, 2* 1, 2* 1, 2, 4 1, 2, 4, 8
Cores per socket
8 12 18 15 8 12
Max Threads / sock
16 24 36 30 32 96
Max L1 Cache
32KB 32KB* 32KB* 32KB* 32KB 64KB
Max L2 Cache
256 KB 256 KB 256 KB 256 KB 256 KB 512 KB
Max L3 Cache
20 MB 30 MB 45 MB
37.5 MB 80 MB 96 MB
Max L4 Cache
0 0 0 0 0 128 MB
Memory Bandwidth
31.4-51.2 GB/s 42.6-59.7 GB/s 51.2-68.3 GB/s 68-85** GB/s 100 - 180 GB/sec 230 - 410 GB/sec
Reference: http://thestgmarketplace.com/pdfs/COMP%20P8%20vs%20X86.ppt
