I stabilized the core at X45 and cache at X35. When I raised the cache to X43 I had to raise the VCore for 0.01 or 0.02 (can't remember exactly). It's also possible that I wasn't stable at X35 cache, so my practical prof is disputable.
But theoretically : When you lower cache from X43 to X35 you can see some small performance decrease. Based on that I deduct that some operations performed slower on slower uncore (a small percent of operations of course). If a operation performs slower because of low cache speed = bottleneck (bun only in rare cases).
In case of:
4,5) no evidence (no statistics)
I agree, I wasn't precise. It would be better to put it this way:
4) probably true (no statistics)
5) probably false (no evidence)
Edited by tomlev5 - 10/17/13 at 5:01am