fleptronic
While the guide is great and I have now a few profiles with really nice curves, does anyone have more technical information regarding how the OC Curve works?
 
Like, I note that when you initially setup a curve, the points/dots will spread a few voltage steps on the same clock close to your "target" one. For example, if I have my max (1093) at 2190 clock, the 4 or 5 dots before it will be at 2175.
 
But during tests I noted this would sometimes result on the next step down (2160) to be using low voltage because of this, so in some cases I edited all my last clocks to have like only 2 or 3 voltage steps.
 
But even that doesn't always works. Does anyone know how the interaction o voltage steps <-> clock should work?
 
Also, something not entirely clear to me yet: how boost (in this case 4.0 as I'm on series 20) is suppose to interact with curve OC?
In the majority of my curves I setup them while on idle (35C in my case) so my max/target clock is actually a little higher to what I want, as temperatures will rise and reduce the clock. For example my most stable curve so far is targeted at 2205, which will translate on a real clock of 2175Mhz during benchmarks/games.
 
But ONE of my curves (that I tweaked WHILE benchmark, so temps were at 55) is saved at 2175Mhz on max clock, but when I apply it while idle, it will overclock to 2220Mhz.
 
Is this curve bugged? How is the interaction suppose to be?
 
Thanks

fleptronic

CptSpig
 
You are hitting voltage and thermal walls. 1093 is not a magic number. My 2080ti's sweet spot is 1072. I stress my card with Adia64 and run video only to find the voltage sweet spot. I also stress the card when setting the voltage curve. This will help with keeping things locked during benching. Also use a good app to monitor voltages and thermals. I like SIV64 works great and is very accurate. Good luck. 

Not sure you understood my questions and I found some stuff you said confusing.
 
- We will always hit "voltage wall" using this method, that's why is called "how to force max voltage".
- 1093 is the max allowed voltage on Turing chip, so they all should accept it provided you have a stable chip and proper cooling 
- Boost 4.0 downlock steps are not the same as thermal wall, if you were referring to it. Thermal wall is 88C on this chip.
 
Of course on air is better to lock the voltage a bit lower if the stock cooler can't handle 1093mV and is thermal throttling badly, stable clock is better than have lots of fluctuations even if peaks higher.
 
But thermal wall is not my case. Yes boost 4.0 will downclock a few steps and I'm compensating it with curve tweaks, but 55C on benchmarks is not even close to thermal wall.
 
My curiosity is more about understanding how the voltage curve is suppose to interact with Boost algorithms and how to proper tweak the voltage <->clock properly to get the most of it, as so far I have mixed curve behaviors as explained above.
 

fleptronic

CptSpig

fleptronic

CptSpig
 
You are hitting voltage and thermal walls. 1093 is not a magic number. My 2080ti's sweet spot is 1072. I stress my card with Adia64 and run video only to find the voltage sweet spot. I also stress the card when setting the voltage curve. This will help with keeping things locked during benching. Also use a good app to monitor voltages and thermals. I like SIV64 works great and is very accurate. Good luck. 

Not sure you understood my questions and I found some stuff you said confusing.
 
- We will always hit "voltage wall" using this method, that's why is called "how to force max voltage".
- 1093 is the max allowed voltage on Turing chip, so they all should accept it provided you have a stable chip and proper cooling 
- Boost 4.0 downlock steps are not the same as thermal wall, if you were referring to it. Thermal wall is 88C on this chip.
 
Of course on air is better to lock the voltage a bit lower if the stock cooler can't handle 1093mV and is thermal throttling badly, stable clock is better than have lots of fluctuations even if peaks higher.
 
But thermal wall is not my case. Yes boost 4.0 will downclock a few steps and I'm compensating it with curve tweaks, but 55C on benchmarks is not even close to thermal wall.
 
My curiosity is more about understanding how the voltage curve is suppose to interact with Boost algorithms and how to proper tweak the voltage <->clock properly to get the most of it, as so far I have mixed curve behaviors as explained above.
 

I understand everything you are asking using wall was probably the wrong term. The card will step down in thermal increments like 20c, 40c and 60c. So if you have the card pegged at 1093 and your card likes 1072 it will step down sooner. remember voltage creates heat and heat will cause the card to step down. Try to stress the card while you set the voltage curve and it should give you a sold lock.

So you are saying is best to setup the OC curve while stressing the card / max temps (which is what I did on that specific profile I mentioned)?
Interesting, will see how it goes and what results I get.
 

fleptronic

pimphard
@fleptronic I see on your sig that you have 2175/8250 with your kraken. Mind if I ask you your +core clock and voltage you have. I too have the same kraken setup, only thing is I have the 2080 XC Black Edition.

Hi
I don't use +core, I use curve mode following this guide. Giving you my curve wont help, it's something you need to find out on your card.
 
I use 1.087mv when OC is enabled.

fleptronic

pimphard
Thx for the response, I really didn`t need the curve because I know it`s kinda a hit and miss thing. I was curious as to what was the voltage you had. Since we both have the same kraken setup

I don't consider using curve a hit or miss.
For me it was really hard to master and find the correct spot, but when you do it, it will absolutely give you more overclock than using +core.
 
Of course is only worth for crazy ones that must squeeze the absolute max out of the cards 

Purish
Upgraded to a 2080Ti FTW3 Ultra Hybrid and I can't seem to get it past 2100 mhz even at 1087/1093 mV. If I go up a step to 2115 MHz it'll instantly crash out of any game.
 
Might just be my card isn't the best for overclocking. I'm currently keeping it locked to 1087 mV @ 2070 MHz so I don't get VRel Perfcap. Any suggestions/advice? It'll step down to 2040 MHz @ 1087 mV as it approaches 55C.

bcavnaugh

Purish
Upgraded to a 2080Ti FTW3 Ultra Hybrid and I can't seem to get it past 2100 mhz even at 1087/1093 mV. If I go up a step to 2115 MHz it'll instantly crash out of any game.
 
Might just be my card isn't the best for overclocking. I'm currently keeping it locked to 1087 mV @ 2070 MHz so I don't get VRel Perfcap. Any suggestions/advice? It'll step down to 2040 MHz @ 1087 mV as it approaches 55C.

Maybe your Overclocking of your CPU and Motherboard Memory is not stable with the RTX Graphics Card

Purish

bcavnaugh

Purish
Upgraded to a 2080Ti FTW3 Ultra Hybrid and I can't seem to get it past 2100 mhz even at 1087/1093 mV. If I go up a step to 2115 MHz it'll instantly crash out of any game.
 
Might just be my card isn't the best for overclocking. I'm currently keeping it locked to 1087 mV @ 2070 MHz so I don't get VRel Perfcap. Any suggestions/advice? It'll step down to 2040 MHz @ 1087 mV as it approaches 55C.

Maybe your Overclocking of your CPU and Motherboard Memory is not stable with the RTX Graphics Card

Could be but I stressed my RAM/CPU with P95 small FFT test for 8 hours and didn't get any errors. I've got a 9700k 5 Ghz 1.3V and my RAM is 16 GB @ 3600 CL 15.

Purish

bcavnaugh
Maybe your Overclocking of your CPU and Motherboard Memory is not stable with the RTX Graphics Card.
I would set them back to Auto on both and make sure you have Reset the Bios after you installed your RTX Graphics Card and that the Motherboard Bios is updated.
Make sure you are using 2 Separate PCIe Power Cables from the Power Supply to the Graphics Card.
Your Power Supply maybe to small and even to old as well.

Set both back to auto and it still crashed. Using 2 PCIe power cables. PSU is a 850w Corsair RMX PSU Gold Certified. Bios are updated.
 

bcavnaugh
P95 never tests the Memory to GPU so it would not hurt to test your RTX Card with then Set Auto to see if you get any better GPU Performance.
Are you running X8 or X16 on the Graphics Card and in GEN3 Mode?
You could run 3DMarks PCI Express Feature Test to see how the Bandwidth is on your PCIe Slot.
You would need to keep the GPU Temperatures below 40°C to go any higher. 

Ran the PCI Express test and got these results
PCIe x16 3.0
12.73 Gb/s
 
Reset my CPU/RAM OC and only OC'd the GPU Core not the memory. This was also at 2145 MHz surprised it didn't crash running the test. Feel like I just lost the silicon lottery here, not sure.

Purish
Thanks for the help. Sucks because the original card I RMA'd OC'd to 2145MHz without crashing. Should have just kept it and done the magnet trick. Oh well not a huge performance loss either way.