Originally Posted by Cool Mike
I have been working on overclocking my 4930K. Here are my results and comments. I have owned the 3930K also.
The Ivy Bridge memory controller is much better than Sandy Bridge. Running Gskill 32GB at 2400Mhz @ 10-12-12-31 timing. Memory controller voltage set at 1.3V. Possible I can go lower.
I hit a wall past 4.6Ghz Core. 4.7Ghz requires 1.5V+ and I could not achieve stability.
4.6Ghz core is completely stabile at 1.42 Core(In Bios). Currently running at 4.6GhzTemps are much better than Sandy also
. In my Rig and at the same Vcore on both Sandy and Ivy, Ivy is 10 degrees C cooler.
So what to the bolded part? Here is the decision tree for someone trading out their sb-e for ib-e
sb-e vs. ib-e relative comparison of pros and cons
Pros - native 3.0, better imc
can't overclock to even 4.8 without non conventional cooling and requires phase or ln2 for higher overclocks
pros - Excellent over clocker on water
lack of native 3.0, and so so imc for memory frequencies above 21333
Conclusion - Most people on x-79 and with a sb-e benefit from 3 way - 4 way sli or cfx (although sb-e does have native 3.0 for cfx) by utilizing high end boards like the rive, etc. Any sb-e owner will benefit more from higher overclocks on sb-e for both benches and gaming with 3 or 4 way gpu set up, or even sli set up.
I am still a bit puzzled as to why intel will release an extreme chip that can't match its predecessor's overclockability especially given that both are on x-79 and any incremental improvements for ib-e don't outweigh the big flaw of poor overclocking relative to sb-e.
now, i do have a phase unit that I recently acquired, and I may pick up ib-e at some point in time for benching, but for day to day benching and gaming, I can't see a single compelling reason for someone to move from sb-e to ib-e. my Edited by provost - 9/13/13 at 10:13am