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Moving from 2.4 to 3.0 on the mesh I saw a 0.5% to 2.0% increase in benchmarks (Cinebench, 3DMark Firestrike, Time Spy, Haven Superposition). So, extrapolating from there, by not pushing it farther to 3.2 I'm leaving an additional 0.17% to 0.66% on the table. That's fine by me.
You know, this is strange. I had tried it before at 3.2 with auto voltage, wasn't stable, tried applying I think upwards of an additional +0.100V offset, still wasn't stable. But I just went to try it now and I'll be darned if it's not working totally stable at 3.2 with auto voltage, which is...
That lag is largely due to the change in cache behavior, which in time compiler optimizations will reduce, or even flip around (4 times as much L2 cache per core on Skylake-X is huge, waiting to be taken advantage of).
Also, as game engines shift to taking advantage of more cores, the distance...
I'm running my mesh at 3.0Ghz. I tried 3.2Ghz, but even applying more voltage it was unstable under heavy load. Also, in my benchmarking I found the mesh overclock from 2.4 to 3.0 to provide very little bump, only 0.5% - 2.0% in game benchmarks, so I'm not sweating it pushing it higher. Plus...
Loving my 7820x. Upgraded from a 2600k. Getting more cores, higher clocks, and better IPC. Seemed like the best balance between more cores and good clocks+IPC vs. going 7700K or 1800X. You pay a bit more for that sweet spot, but it was worth it to me as I plan on keeping this system for 5-6...
The 7820X is a great chip. I posted my overclocking results here.
Recap:
7820x at 4.6Ghz on 8 core loads, 4.7Ghz on 4 core, and 4.8Ghz on 2 core (Turbo 3.0)
1.20V CPU core effective peak
3.0Ghz Mesh
90C peak core temp under Prime95 small FFT after 15mins. 70-80C max on other benchmarks, 1...
Which ones would you like to see?
I've got my 7820x running at 4.6/4.7/4.8 (8c/4c/2c) with mesh OC to 3.0Ghz.
Here are a few I just ran with my 1080 Ti at stock (100% power, +0/+0):
3DMark Time Spy 10014 (graphics 9843, CPU 11109)
3DMark Firestrike Normal 22631 (graphics 27724, physics 24312)...
Everyone's reporting on VRM heat issues and I'm over here pulling 230-260W at the package continuous with VRMs only in the 60C's.
Would be nice to see someone do one of these reviews with evidently the only decent x299 motherboards out there currently, the Gigabyte Aorus Gaming 7 and 9, which...
7820x at 4.6Ghz on 8 core loads, 4.7Ghz on 4 core, and 4.8Ghz on 2 core (Turbo 3.0)
Gigabyte Gaming 9 F6A BIOS
DDR4-3200 14CL 1.35V (G.Skill 32GB quad kit)
1.20V CPU core effective peak (core voltage set to "Normal" with a -0.025V offset). TJMax +10. All other settings left to "Auto" except...
No problems with VRM heat on my Gigabyte Aorus Gaming 9 x299 board. They run in the 50-60C range under load reported at the board VRM sensor, and max at 80C under Prime95 v26.6 small FFT, with an overclock to 4.6Ghz at 1.20V on a 7820X. That's with no direct air cooling, just indirect from two...