Sisoft Sandra tells much the same story, although it doesn't like it at all when we pushed the memory further than its rated values in terms of both latency and frequency, yielding a very poor result. There are huge jumps for frequency elevation rather than very small ones for latency optimisations - the gap is far larger than in Everest.
IMC Performance
IMC: Sisoft Sandra Unbuffered Memory Test
CPU Uncore Clock: 2133MHz
CPU Uncore Clock: 2667MHz
CPU Uncore Clock: 2933MHz
CPU Uncore Clock: 3200MHz
19038
19252
19192
19207
0
5000
10000
15000
20000
MB/s (higher is better)
IMC: Sisoft Sandra Random Memory Latency Test
CPU Uncore Clock: 2133MHz
CPU Uncore Clock: 2667MHz
CPU Uncore Clock: 2933MHz
CPU Uncore Clock: 3200MHz
80
75
74
72
0
10
20
30
40
50
60
70
80
MB/s (higher is better)
Increasing the memory controller clock alone does little for the raw memory performance, but it does reduce the latency slightly.
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