How's my overclocking?

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Hank Crocker

Hank Crocker

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Aug 12, 2013
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Hey Guys,

I have a new system that I have been messing around with for the last 3 weeks.
Here are my specs:
Motherboard: ASUS ROG STRIX Z370 E GAMING
Processor: INTEL COFFEE LAKE 6-CORE I7-8700k @ 3.7 GHZ
Memory: CORSAIR LPX VENGEANCE DDR4 MEMORY @ 3000 MHZ 16GB
Cooler: CORSAIR H100i V2 LIQUID COOLER
GPU: ASUS ROG STRIX GTX 1080 TI 11 GB OC EDITION (1683 mhz boost clock)
PSU: CORSAIR RM750X PSU
Hard Drive: Seagate Barracuda 2 TB HDD
Other:
Fans for the H100i V2 have ML120's that I got and one of the SP120Ls that came with the cooler is used as a case fan

Now the three things I have overclocked are the GPU, the Processor, and the Memory.

The GPU is OC'd to 1708 MHZ and has a custom fan curve that I chose in order to keep the temperatures down (I have a fan in my room plus sound is playing most of the time I'm on the computer anyway so fan speed noise isn't too much of a concern for me)
The Processor is currently overclocked to 4.8 GHZ (It was OC'd to 5.0 GHZ, but I was getting some high voltages in HWmonitor, around 1.4 V for VID #0-5 so I downclocked it so it doesn't go past 1.35 V)
The Memory has XMP enabled so it can use the full extent of the memory speed and DRAM voltage is 1.360 V


All of these settings for the Processor and Memory were chosen by AI Suite 3's 5 Way Optimization
option.
The GPU speed is set by MSI Afterburner based off of the OC Mode in GPUtweak II
I can probably go higher but I'm trying to keep longetivity in mind for this rig but what do you guys think? What settings should I change to help longetivity but to also push the boundaries?
 
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Hank Crocker

Hank Crocker

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Aug 12, 2013
44
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10,530


Ah my VCORE according to HWMonitor is at 1.280 V right now at 4.8 GHZ. I'll try running it up to see where it's at.

EDIT: Well I have some monitoring data from previously running at 5.0 GHZ. It never went higher than 1.31 V but I'm not sure if that's the current or the Maximum. Right now just running at 5.0 GHZ, the Voltage is at 1.376 V Max, other than that it looks like it hovers between 1 V and 1.35 V
 
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T

TJ Hooker

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Apr 15, 2014
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What did you set Vcore to in the BIOS, is it still under auto, or offset? If you want to have more exact control over it you can set it to a fixed value, the downside to that is that it will always run at that voltage even at idle.

I found that if I set my load line calibration to 'high' (or equivalent), Vcore under load tends to go a bit higher than what I've set in the BIOS. On default LLC I think Vcore drooped a little below what I set in the BIOS.
 
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Hank Crocker

Hank Crocker

Honorable
Aug 12, 2013
44
0
10,530


It's set at the auto value right now. Should I set it to offset and Is it safe for it to run constantly at 1.35 V?

EDIT: Tried setting the Manual to 1.35. Temperatures shot up to 80 C after running Realtemp sensor test at 5.0 GHZ. Dialed it back to 4.8 GHZ and Auto mode for the voltage for now.
 
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Hank Crocker

Hank Crocker

Honorable
Aug 12, 2013
44
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10,530
Hey TJ, I think I found my sweet spot for my processor. I have it OC'd to 4.9 ghz with auto voltage on. I think in terms of silicon lottery, I have a "normal" chip where 4.9 ghz has a normal vcore between 0.6-1.344 Volts on auto and is stable. The average voltage range I've seen was between 1.2 - 1.3 volts under load. I have never seen it go higher than 1.344 volts on any stress test except realtemps sensor prime95 small FFTs test where it shot up to 1.396 volts and I believe that was just a momentary voltage surge when it was dropping clock speeds. The max temp for that test was 85c. Running it under AVX workloads like blender and realbench, I had no crashes and the temps were below 80c on my lowest fan setting for all of these tests and same deal with the vcore. I'm going by what you say making sure that my vcore stays below 1.35v to maintain its lifespan. But otherwise, I think I found the sweet spot to use for the future.
 
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