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  Topic Review (Newest First)
03-23-2019 11:31 PM
Asmodian
Quote: Originally Posted by Cyber Locc View Post
The other thing I noticed, if I just up the power target to 130 and leave the clocks alone, the card clocks up to 2050 by itself, and it drops then into the high 1800s, low 1900s and back up. However with my overclock, it drops from 2190 to 2025 at lowest, so I dont think its a thermal limit, or a power limit, as that doesn't make any sense. If either was the cause, it would stop down clocking if its at lower clocks, and it doesn't stop. The card just down clocks, for seemingly no reason.
I think hitting the power limit causes very very short declocks to very low speeds. When it triggers it goes to 300 MHz for xx microseconds, or something similar, so we see these randomly timed stops averaged into our normal max clocks. This causes the reported clock rate to fluctuate down but that does not tell us anything about the real min clock that would allow it to never throttle.

Also, Nvidia has done a pretty amazing job at keeping power down without hurting performance very much. Increasing the max clock keeps increasing performance, even when the card is already triggering the power limit. I like steady clocks but it looks like opening up the power a lot is usually worth less than a +50 MHz OC, unless you have an unusually power heavy load. On battery or heat constrained I think this throttling tech would actually be very good.

I am not sure about your auto-decreasing power limit, I never saw that with my FE 2080 Ti.
03-23-2019 01:40 PM
Cyber Locc
Quote: Originally Posted by Asmodian View Post
I think most of that really is the power limit, when it isn't temps. Watch the "Performance Limit - Power" in HWiNFO64 or Afterburner's "Power limit", do you see it triggering? I also miss the days of set and forget GPU clocks, until I remember cards that died fast due to thermals (today's cards would downclock) and the general quality of the hardware then. A new "I don't mind if you die" option to take total control would be great though.
Yes, thats my issue though.

The when it downlocks, it lowers the power limit first. Which makes zero sense, if its not hitting the current power limit, and temps are fine, why drop it? So what happens when it downclocks, is it drops the Power target from 130% to 115%-124%, and then the clocks drop. again for no reason.

In Heaven and Valley the PT stays at 130%.

Ill try that other bench later, I been out the game for awhile lol, Lots of new stuff .


The other thing I noticed, if I just up the power target to 130 and leave the clocks alone, the card clocks up to 2050 by itself, and it drops then into the high 1800s, low 1900s and back up. However with my overclock, it drops from 2190 to 2025 at lowest, so I dont think its a thermal limit, or a power limit, as that doesn't make any sense. If either was the cause, it would stop down clocking if its at lower clocks, and it doesn't stop. The card just down clocks, for seemingly no reason.
03-23-2019 12:19 PM
Asmodian
Quote: Originally Posted by Cyber Locc View Post
Ya my wife likes it hot in the house, so I can only bench at reasonable temps at night, till couple months. If its cold outside she wants it 80, if its hot she wants it 60, Women man. Also this is on my bench, so way rad limited. I need more rad, and more Wattage .
The way these cards drop clocks at temperature steps, even below 50°C, means lower temps are almost always good simply for that reason. My best behavior was with all the doors and windows open in winter.

After the mod I get perfectly stable clocks and voltages within each temperature bin, as temperature goes up I see it drop clock/voltage down in clean steps.

Quote: Originally Posted by Cyber Locc View Post
What aggravates me, is the curve wont stick. So I can do 2200 at 1.093, when it sticks, and I can do 1185 at 1.081 I think it is, it doesnt matter, because the curve will only let me set custom clock for 1.
The way clocks, volts, and power limit throttling interact don't make sense when simply looking at monitoring software's reports. I think things are changing even faster than we can see so the reports don't tell us what is actually going on. Differences is aliasing and/or averaging methods will cause oddities.

If I lower the power limit a lot it doesn't matter what I overclock to, I always see dips. I can set the overclock to the lowest clock it reported dipping to and it will report dipping a bit lower.

My 8K Superposition max clock of 2115 MHz is also my min clock (6033):


But the score directly below mine has a max clock of 2145MHz (6022):


Quote: Originally Posted by Cyber Locc View Post
So when the voltage drops, it drops way more clocks then it needs. I guess I need to try setting a low clock only, and see what it does for the upper clocks. The card just doesn't want to let me manage it, and I cant stand that.
I think most of that really is the power limit, when it isn't temps. Watch the "Performance Limit - Power" in HWiNFO64 or Afterburner's "Power limit", do you see it triggering? I also miss the days of set and forget GPU clocks, until I remember cards that died fast due to thermals (today's cards would downclock) and the general quality of the hardware then. A new "I don't mind if you die" option to take total control would be great though.
03-22-2019 08:35 PM
Cyber Locc
Quote: Originally Posted by Asmodian View Post
I see, even Timespy Extreme isn't too high power so that makes sense.

I think the odd voltage drops might simply be lower voltage+clock+temperature bins that at that particular temperature happen to stay the same clock.
Ya my wife likes it hot in the house, so I can only bench at reasonable temps at night, till couple months. If its cold outside she wants it 80, if its hot she wants it 60, Women man. Also this is on my bench, so way rad limited. I need more rad, and more Wattage .

What aggravates me, is the curve wont stick. So I can do 2200 at 1.093, when it sticks, and I can do 1185 at 1.081 I think it is, it doesnt matter, because the curve will only let me set custom clock for 1.

So when the voltage drops, it drops way more clocks then it needs. I guess I need to try setting a low clock only, and see what it does for the upper clocks. The card just doesn't want to let me manage it, and I cant stand that.
03-22-2019 04:33 PM
Asmodian I see, even Timespy Extreme isn't too high power so that makes sense.

I think the odd voltage drops might simply be lower voltage+clock+temperature bins that at that particular temperature happen to stay the same clock.
03-22-2019 03:14 PM
Cyber Locc
Quote: Originally Posted by Asmodian View Post
What is the stock power limit on your card?! I don't see how you could maintain 2160+ MHz with the stock power limit and a reasonably heavy load, unless it is a very high power card like the Galax. For example, I hit around 400W at just 2100 MHz in 8K Superposition.

That is a nice card though, don't break it.
I believe the stock limit is 338.

I need more power lol! It jumps around, in 3dmark, averages 2160, but drops sometimes as low as 2125, and goes up to 2190. I cant get it to stay at 2190, heaven will stay at it, at 2190 consistently, (as long as I keep temps under 40c), but Timespy Extreme looks like the stock market lol.

Its weird too, because I noticed after trying to lock the voltage today, it wont work. In 3dmark when it drops, it lowers the voltage first, then the clocks. I lock clock and voltage and in heaven it stays for the most part, however in 3dmark it refuses to stay put. I think my CPU might be Bottleneck it or something idk.

So this is from Heaven, and Timespy is just all over the place, dont have one of those, I will on next run want to test some other stuff . (highest was 2190 not 2205, and it stayed at 2190 most of the time) Heaven was maxed, and at 4k to get to peg GPU like that.
03-22-2019 05:17 AM
Kaltenbrunner
Quote: Originally Posted by Asmodian View Post
I will never try to RMA my cards after doing this mod.
I'm afraid to take the cooler off mine, just too look at the PCB. If I was richer than I'd try mod's like this, and BIOS mods too.
03-21-2019 09:32 PM
Asmodian
Quote: Originally Posted by Cyber Locc View Post
But shoot that said, after reading results here, I am pretty happy, with a stable 2160/2175c (depends on house temps, 1-2c water temp will drop it to 2160) / 8000mem, with the stock bios and no modding. Now I def dont want to risk the card lol.
What is the stock power limit on your card?! I don't see how you could maintain 2160+ MHz with the stock power limit and a reasonably heavy load, unless it is a very high power card like the Galax. For example, I hit around 400W at just 2100 MHz in 8K Superposition.

That is a nice card though, don't break it.
03-21-2019 08:42 PM
Cyber Locc
Quote: Originally Posted by Renegade5399 View Post
UPDATE ON THIS BIOS: It SEVERELY cuts the NVlink bandwidth. Opinion is it makes multi card setups pointless as the link is crippled. Still great for single GPU setups though, if your card works with it.

I will be sticking with the stock, upgraded (from evga) BIOS for these cards as none of the others lets me get even close to the memory speeds I get with OEM. I also will be applying the shunt mod to raise my available power limit. Lastly, waterblocks will be installed (already have them, just no time with 4, soon to be 5, kids).



I used clear nail polish my wife had lying about as I couldn't find my can of liquid electrical tape. This is a good idea though.
Wait what you mean stock upgrade? The 363 bios? or is there another? EVGA needs to step it up and give us more POWA! like Galax!

But shoot that said, after reading results here, I am pretty happy, with a stable 2160/2175c (depends on house temps, 1-2c water temp will drop it to 2160) / 8000mem, with the stock bios and no modding. Now I def dont want to risk the card lol.
03-20-2019 09:42 AM
Renegade5399 I have gone back to the stock EVGA BIOS with the shunt mod. The XOC BIOS is nice and all, but it cripples NVLink SLi and I can't get the RAM nearly as high as I can on stock BIOS.

With the shunt mod and stock BIOS with the waterblocks installed, I have finally began testing. I am not sorry I did the shunt mod. 2070-2100 in games and benches with .975V. Superposition 4K runs 2100 all the way to the last 10 seconds at 2100, then it drops to 2070 as the temp creeps over 52°C. These Barrow blocks are decent. I have been fighting with the mount on this card to get it just right. The other card mounted perfectly to its block, but this one has been a hassle. I know I can get the temps a bit lower, just have to take it apart again.

Now a word of warning now that I have actually tried:

A 1000W power supply may not be enough to run 2 of these cards with the shunt mod. Just to test I enabled SLi and ran Furmark. It ran literally 1 second and the PC shut off. PSU tripped for over current/power. Installed a Dell 1200W server supply with breakout board I had left over from mining and put the cards on that. No issues after that, Furmark ran fine, LOL. So under heavy load (gaming, AI/DL, password cracking) these cards have the potential to pull over 500W each.

In games these cards are just the cats' ass.
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