[SOLVED] PC shut off after 1080ti Overclock

OKAMISC

Reputable
May 4, 2017
29
2
4,545
Hello,

My rig:

i7 7700K
GTX 1080 ti
16GB ram
Asus Z170-E
600w 80+
SSD & HDD
144Hz Acer monitor & 60Hz Acer monitor
Razer Seiren X mic
C920 Webcam
Elgato HD60 Pro

(For wattage purposes)

SO Yesterday I attempted at OC my gtx 1080 ti because I wanted more FPS while playing The Division at Ultra settings.

I have OC before and before OC i searched for results of different 1080 ti OC and they all seemed to be around 2100MHz on the core closk and 5800 on the memory clock. I started by just getting a normal bench without OC using HeavenBenchmark. I increased voltage to max and power limit to max. I then increase the core clock by 50 and the Mem clock by 500, from 1550 and 5500 and benched again. I did this until I started getting diminishing values in results and/or the program would crash. I settled around 80Mhz on the Core clock and 600 on the memory clock. I ran 3 tests, Not all same results, I guess from constant testing, but it gave me no problems. I applied OC and turned on Division and didnt see much of a change. I turned on Darksiders 3 and played that for about 2.5 hours then SHUT DOWN! My entire Pc turned off. I assume it was my OC because I never had that happen before. I turned OC off. and began playing again for another 4 hours with no problems.

Now, I entered everything on my computer on PCPartpicker and it said the recommended wattage was 419-429. I was told to give yourself 100-200 watts of headroom to breathe. So I assumed I was safe with my 600w 80+ PSU. I also read that a small OC to the 1080 only really gives about a 2-8 FPS increase in games so im thinking is it really worth it to OC or did I do it wrong?

Do you guys know why it shut off? The only thing that maybe was off was my Mem clock which was at 6100, while other people avg for 1080 ti was about 5800.

**Side Note**

Im not sure why but when I play The Division it uses close to 100% of my CPU and about 60-80% of my GPU when its the only program running. I usually have to play at a much lesser quality in order to alleviate some of the stress but it doesnt really work. Even playing at medium to high settings is rough and runs my CPU temps between 78-84 Celsius (which i just learned was bad). So I thought of OC my CPU as well, but If my PC shut off from OC my GPU by a bit then im scared what will happen if i tried that.

 
Solution
Given what you said about your cpu running at 100% load while gaming, it is very likely that your cpu is largely bottlenecking your 1080ti.

This, however, may or may not be directly related to your pc completely shutting down while in use. As others have pointed out above, I'm leaning towards the psu side.

Which EVGA model is your psu? A 600w tier5 psu is far different from a 500w tier1 psu. I strongly suggest a Tier 1 psu. Since you mention evga, may I recommend the EVGA G2 750w, which is currently on a crazy price drop right now.
https://www.bhphotovideo.com/c/product/1044626-REG/evga_220_g2_0750_xr_supernova_750g2_750_watt_power.html

thtran6

Upstanding
Oct 2, 2018
167
4
265
Given what you said about your cpu running at 100% load while gaming, it is very likely that your cpu is largely bottlenecking your 1080ti.

This, however, may or may not be directly related to your pc completely shutting down while in use. As others have pointed out above, I'm leaning towards the psu side.

Which EVGA model is your psu? A 600w tier5 psu is far different from a 500w tier1 psu. I strongly suggest a Tier 1 psu. Since you mention evga, may I recommend the EVGA G2 750w, which is currently on a crazy price drop right now.
https://www.bhphotovideo.com/c/product/1044626-REG/evga_220_g2_0750_xr_supernova_750g2_750_watt_power.html
 
Solution