2021/12/19 15:32:46
talon951
It's a bit more complicated than that. See my original testing here,

https://www.overclock.net.../page-12#post-28835821

Bottom line is the power readings are completely innacurate due to different controllers (I think). So you have to be pretty careful how you set it or risk blowing the 2nd 8 pin fuse.

That bios also has the thermal safeties disabled. Like I said, not really a daily driver.
2021/12/19 15:35:14
ericc191
Last question, can you give me a safe number from the 2nd 8 pin? I just did -45% in Heaven 1080p windowed mode and noticed PCIe#2 pulled 165 watts.
 
Okay, yeah I just tested again with the XOC 450 bios and the most it pulls from 2nd 8 pin is 156 watts. I think you are dead on right.. if I try to move the slider to -50% on the Galax 1000 watt bios that would equal 500 watts of usage, but at the risk of damaging that 2nd 8 pin probably pulling like 175-185 watts. 
2021/12/19 15:55:54
talon951
You can see from my table in the link that 45% PL stays under 20 amps and that was hitting it with Kombustor. 47% IIRC can hit right at 20 amps. Some 4k games and benchmarks can hit it about as hard though. Time Spy Extreme for one.

The good news is the 2nd 8 pin does read in the ballpark as the table shows, so you can get a pretty good idea where you are from that.
2021/12/19 16:00:11
ericc191
Phew, yeah I tested with a power limit of 45% and that link says that's the absolute highest they would recommend. Good thing I got lucky there! Anyways flashing back to stock XOC and calling it a day! Would be nice to see it sit at 2050 or 2100MHz all day long, but I'm okay with 1995 :) lol
2021/12/19 16:19:53
talon951
ericc191
Phew, yeah I tested with a power limit of 45% and that link says that's the absolute highest they would recommend. Good thing I got lucky there! Anyways flashing back to stock XOC and calling it a day! Would be nice to see it sit at 2050 or 2100MHz all day long, but I'm okay with 1995 :) lol


Well part of the time I just leave it on the other position on the bios switch.

I think 45% is pretty safe. 47-48 is definitely pushing it though. PCIE may start getting close too as it only has an 8 amp fuse (96w).
2021/12/21 03:52:44
lemuth80
Hey I got my 3080ti today and was running heaven/port royal benchmark with overclock applied.
The card barely touched 1.1 mv during the benchmark only maybe for a split second and was at around .980-1.015 mv range.

Highest temps was 67c
420 power draw
+160 core
+1000 mem
Voltage slider 100%
113% power limit

Is that normal behavior to not go to 1.1 mv?
Port royal score was 14200 highest with average clock speed of 2025

Thanks for the help
2021/12/21 03:55:28
lemuth80
lemuth80
Hey I got my 3080ti today and was running heaven/port royal benchmark with overclock applied.
The card barely touched 1.1 mv during the benchmark only maybe for a split second and was at around .980-1.015 mv range.

Highest temps was 67c
420 power draw
+160 core
+1000 mem
Voltage slider 100%
113% power limit

Is that normal behavior to not go to 1.1 mv?
Port royal score was 14200 highest with average clock speed of 2025

Thanks for the help

https://imgur.com/a/JsQGqfu
2021/12/21 07:14:28
talon951
Normal. 3080ti (along with most 30 series) is power limited in most games/benchmarks. For example, in Port Royal, it takes about 550w-575w to maintain 1.1v through the entire run.
2021/12/21 08:09:21
lemuth80
How is it possible that people get like 14500-14700 on air. The weird thing is I’m not even hitting 450 watt.
Mine is 430 all the way
2021/12/21 08:19:34
ericc191
Your card is very similar to mine. I was able to break 14300, but that's it. It'll power limit if I try to run the core at 2100mhz REGARDLESS of what I lock the voltage at. Some GPU chips just appear to be hungrier than others.

What I can tell you, though is a few interesting observations..

1. The 3080 Ti will power limit instantly with Ray Tracing on vs off. For example, the game I test with is Guardians of the Galaxy (3440x1440p). With Ray Tracing off, I can run all day at 2070-2100mhz, but the moment I turn on Ray Tracing, it drops down into the 1900s unless I lower the voltage lock to .925ish, sometimes even lower like .918.

2. After testing many different games with MAX OC vs 1950mhz, gains literally are 2-5FPS. That's it. Not worth all the extra heat and noise in my opinion.

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