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I spoke with you a little on this in Kansas City a little while ago. I was able to get my i5 to [email protected], but got nervous. Sooo, I've gone down to [email protected] using the ASRock board. I'm gonna need this CPU to last me at least 2 or 3 years.
So here's my stuff
i5 6600k ASRock Z170 Extreme 4 Corsair Vengence DDR4 2400 (that was the built in XMP, I haven't messed with it at all yet). I've got a Corsair H100i cooler on the cpu in a push pull configuration.
Using x264 benchmarks at 4.7GHz I was able to get complete stability running it for 12 hours with temps at about 79C peak.
The secret for me was setting Load Line calibration to Level 1. This was my first time really overclocking so I definitely probably damaged something.
My motherboard BIOS is on version F3 and most current at the time of this post.
Got my 6600k stable at 4.7 but decided to back it off to 4.4GHz at stock voltage from the factory preset overclock.
These Trident Z sticks though are a heck of a good pair of memory. XMP at the stock 16-16-16-36 timings at 3200MHz at 1.35v worked just fine but I wanted to put these to the test. I stopped pushing the limits at 3600MHz and fine tuned the timings for 17-18-18-36 at 1.46v and its actually stable. I didn't try going up and beyond this simply because I am happy with them at this speed. Got increases in reads, writes, and copy in aida64.
After running the last couple of weeks at 4.6Ghz on my 6700K @ 1.35V and XMP timings at 3000Mhz on my G.Skill Trident Z sticks @ 1.35V with total stability (except for XMP 3400, that's a whole nother story), I think I'm satisfied with those results and am now going to try the other direction and see how little voltage I can run and still be stable.
ASUS ROG Maximus VIII Hero (BIOS v1202) i7-6700K 2 x 8GB G.Skill Trident Z 3400 Be-Quiet! Dark Power Pro 850W EK Waterblocks Predator 240 (top mounted-exhaust) Fractal Define S
First test at 1.34V after 4 hours of Realbench is in the books:
Temperatures came down a bit from the mid-70's at 1.35V as average temps are in the 60's during testing with spikes into the mid 70'S on the CPU.
As a note, I am now running VCCIO and SA at Auto settings in the UEFI.