2020/12/21 18:08:29
flyingtoaster85
Are any of you guys adding NVVDD voltage for gaming? I am leaving mine at stock voltage for longevity.
2020/12/21 18:11:57
USMC1419
flyingtoaster85
Are any of you guys adding NVVDD voltage for gaming? I am leaving mine at stock voltage for longevity.



I'm planning on stock voltage for gaming and probably +100/+800 for a conservative daily driver.
 
Sajin, I wonder if I'd be up around your mid 15k score with XOC. That way I wouldn't be hitting these limiters. I'm thinking that even though I bump up the NVVDD and MSVDD, I'm still at the mercy of watts as I'm hitting 126-127% TDP and 520 w on LN2 Bios. She's basically starved for power.
2020/12/21 18:18:58
Sajin
USMC1419
flyingtoaster85
Are any of you guys adding NVVDD voltage for gaming? I am leaving mine at stock voltage for longevity.



I'm planning on stock voltage for gaming and probably +100/+800 for a conservative daily driver.
 
Sajin, I wonder if I'd be up around your mid 15k score with XOC. That way I wouldn't be hitting these limiters. I'm thinking that even though I bump up the NVVDD and MSVDD, I'm still at the mercy of watts as I'm hitting 126-127% TDP and 520 w on LN2 Bios. She's basically starved for power.


No idea, but you'll definitely get a higher score with a uncapped vbios if you're hitting the 520w limit.
2020/12/21 18:29:00
DarkClownX1X
gridironcpj
Strange.  I'm only getting 14.8K with an average clock of 2142MHz and memory offset at +1400MHz.  I didn't touch the Classified Tool for this run.  Mine is definitely not a lottery winner either.  Far from it.
https://www.3dmark.com/3dm/55181212


I haven't broken 15k with mine either even with spending a lot of time mucking in classifier.  I'm on a 5900X so maybe my MB/CPU is a hinderance.  I'm using the BIOS that shipped with the latest PX1.  I was using a PCIe extension cable but changing directly to the slot didn't improve anything.
 
How warm is your GPU die getting?  Mine seems to quickly climb up in the 40c and then ends past 46c+.  I can see a GPU step down at 36c and at 46c.
 
2020/12/21 18:59:31
Chamidorix
Some corrections on how voltage on Nvidia cards actually work. 
 
1. Voltage slider in afterburner/px1 merely permits additional voltage steps on driver v/f curve, it does not increase the actual supplied voltage per curve step by 100mv etc.
 
2. Driver reported voltage via GPU-Z or HWInfo is entirely different from actual voltage being set by voltage controller. Afterburner and PX1 poll the actual VC via i2c so that voltage is closer to accurate. Driver voltage is the voltage the Nvida driver requests based on power draw and driver clockspeed. The second you start touching voltages this value is completely meaningless, since i2c via classified etc overwrites this requested driver voltage. 
 
3. LLC can massively modify the actual voltage on NVDDD at chip. You need to actually probe the rail to observe this; luckily kpe probe-it makes this trivial.
 
4. OCP is not going to limit you, at all, outside of extreme voltages under LN2. The amperages required to trip OCP are in the range of actual electrical shorts, AKA not even close to the 20A or so you are gonna be maxing out on <1.2V. 1.5V when the temp isn't -140 degrees after the grease unknowingly cracks on LN2 though, now that's a different story and that is why you are able to turn it off. Also if you trip OCB it will be a hard card crash, observable as a device cycle in event viewer as opposed to a driver disconnect etc from a normal instability crash. So stop turning off OCP if you aren't benching on sub-ambient on extreme volts, its doing nothing except letting your card die instantly if you ever short. 
 
5. The dip switches are a voltage offset applied on top of  driver requested voltage. So you can simply flip a dip to increase voltage higher than what v/f curve says and therefore move the frequency higher at each point without instability. While direct i2c via classified is a static target voltage, meaning the value you select what you want the end on-chip voltage to be at all times, so the voltage controller will over supply to compensate for droop based on llc, plane loss, etc. 
2020/12/21 19:13:41
USMC1419
DarkClownX1X
gridironcpj
Strange.  I'm only getting 14.8K with an average clock of 2142MHz and memory offset at +1400MHz.  I didn't touch the Classified Tool for this run.  Mine is definitely not a lottery winner either.  Far from it.
https://www.3dmark.com/3dm/55181212


I haven't broken 15k with mine either even with spending a lot of time mucking in classifier.  I'm on a 5900X so maybe my MB/CPU is a hinderance.  I'm using the BIOS that shipped with the latest PX1.  I was using a PCIe extension cable but changing directly to the slot didn't improve anything.
 
How warm is your GPU die getting?  Mine seems to quickly climb up in the 40c and then ends past 46c+.  I can see a GPU step down at 36c and at 46c.
 



I should note, I did NOT update firmware when asked in PX1 after seeing how many people had their OLED screen break. I deleted the firmware folder and the firmware updater in library folder.
 
My 15,238 was on +150/+1350, max slider for power/voltage, 1.125 NVVDD and MSVDD, ocp off
2020/12/21 19:56:19
USMC1419
Chamidorix
Some corrections on how voltage on Nvidia cards actually work. 
 
1. Voltage slider in afterburner/px1 merely permits additional voltage steps on driver v/f curve, it does not increase the actual supplied voltage per curve step by 100mv etc.
[clipped]




This is great information, thank you for sharing. When seeing Vrel and Vop, will increasing voltages help fix this or changing curves, as long as you are also not simultaneously hitting Pwr limits?
 
I think I've reach the end of the road for the LN2 stock bios, as I'm hitting ~510-520w, and seeing occasional Pwr limit but constantly seeing Vrel and VOP when setting my clocks faster.
2020/12/21 20:07:37
Fuzzypunks
Luumi just dropped a how to overclock your KP 3090 video and it's good.
 
https://www.youtube.com/watch?v=2QIoeeUW5oc&t=312s
 
2020/12/21 20:17:56
johnksss
I def can not do 1600 on memory
2020/12/21 22:20:09
LVNeptune
Fuzzypunks
Luumi just dropped a how to overclock your KP 3090 video and it's good.
 
https://www.youtube.com/watch?v=2QIoeeUW5oc&t=312s
 




I skimmed through the video but it didn't go over anything in the classified tool and he was just bumping up memory and gpu clocks. Didn't really explain the perfcaps or anything. He got some decent scores though.

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