stability is pretty much all gone over ~1650, and dual channel is impossible. This is only possible due to the x58a-oc allowing to set lower uncore clock if you use the innermost channel. It is possible to run 16x mem + 17x uncore this way.
This CPU tops out around 1400 32M on R3BE with typical uncore ratios and is the strongest IMC I’ve found on this platform by a fair amount.
So far I’m only running some timings manual, I recon ~30-50 MHz more might be doable without increasing volts by a lot, since with full manual timings since gdie appears quite sensitive to that, at least on z87 this stick did. I also have 2 more sticks to try as well as a couple more tweaks I’ll be keeping to myself for now.