[quotemsg=17748517,0,570460]I don't think it was the RAM. If it was, I should have had problems with it at the faster speeds regardless of the BCLK. However I got it fully stable at DDR4-2700 with a 102 BCLK, but I couldn't even get DDR4-2400 when the BCLK was above 105. I don't think it was the cache multiplier either because 2666 was rock steady with a 3.7 GHz cache.
I'm sure we'll see a lot more i3 tinkering in the days to come, and this is hardly an exhaustive study. On your personal i3 overclock, have you seen any memory problems? How do you stress yours to test it?[/quotemsg]
lol...if you only knew how many times I re-installed Windows on my bench drive due to corrupted file system while overclocking my i3... The first week was really rough. I've still not got my DDR3 as far as I got it with Kaveri (2400CL9), but even still it is showing better bandwidth and latency at like ~DDR3-2300CL9 than my 860K could do. I'm capped at 1.65v in my Z170 BIOS though, whereas I could push literally as far as I wanted on my FM2+ motherboard.
But now I'm more comfortable, fully stabilized a 24/7 overclock and still chipping away at stabilizing 4.7GHz.
For stressing I obviously can't use the typical AVX workloads, so I'm experimenting several other synthetics and real work loads such as loops of 3dmark physics, CPU-Z stability test, Kombustor CPU stability test, AIDA 64 Extreme stability test, ASUS Realbench CPU stability test, and of course just normal gaming and work loads. Some of these tests indicate very high temperatures in AIDA when I crank the voltage (nearing 80C), and others are lower temps like 50C. I've pushed voltage as high as 1.5 already though it did no good, so maybe I'm hitting my cache limit.