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[Official] NVIDIA GTX 780 Ti Owner's Club - Page 1007

post #10061 of 16498
Quote:
Originally Posted by gordan View Post

If the latency fix is to disable the boost then that is implicitly not a driver induced latency but a state transitioning latency. The same latency can be observed on CPUs with power management enabled. If the load is short and bursty rather than consistent it will happen, but it shouldn't be happening regularly unless there's a shader bug or you are constantly bouncing around the power/thermal/voltage limit.

...or if the driver/hardware doesn't recognize the app properly. I deal with this A LOT. NVidia drivers still need a lot of work in the boost 2.0 department.
post #10062 of 16498
The problem is that the card will boost past the boost clocks if it can do so within the power/thermal/voltage envelope. Just because you set default=boost clocks doesn't mean the card won't boost further anyway.

To properly work around the problem you would also need to do the following:

1) Truncate the boost table to be the same as the default=boost clocks, and make sure that this is within the tri-envelope even at maximum possible achievable load (e.g. CudaMiner with the optimal kernel for the GPU).
2) Delete the power states other than P0 to stop downclocking when idle.
post #10063 of 16498
Quote:
Originally Posted by gordan View Post

The problem is that the card will boost past the boost clocks if it can do so within the power/thermal/voltage envelope. Just because you set default=boost clocks doesn't mean the card won't boost further anyway.

To properly work around the problem you would also need to do the following:

1) Truncate the boost table to be the same as the default=boost clocks, and make sure that this is within the tri-envelope even at maximum possible achievable load (e.g. CudaMiner with the optimal kernel for the GPU).
2) Delete the power states other than P0 to stop downclocking when idle.

You're assuming that the card even leaves idle clocks...which for many apps/games I have, does not occur, even when in a 3D application. So it's not as simple as you put forth. The cards will DROP clocks when those clocks aren't needed, too. For example, Rocksmith 2014, gameplay is at idle clocks..menus are at 3D clocks. Leave a menu and start a "level", and the card drops back to idle. occasionally more clocks are needed, and when the clocks boost up a bit for a moment, this creates lag and delays...while audio continues.

But yes, a single clock state would be better, for sure.
Edited by cadaveca - 4/23/14 at 9:35am
post #10064 of 16498
Although, does disabled Boost means that clocks will not even go into their super-low idle mode? I was hoping to have 3 states - super-low idle clocks, default base clocks (same as 3D clocks), and then whichever overclock I can achieve. Having the card run at 1000Mhz at all times without going to whatever idle-mode is (350Mhz?) will stress the card pretty bad over a few years, won't it? I need mine to last until games can actually take advantage of all of its power!
post #10065 of 16498
Has anyone successfully done a voltage regulation bypass?

If so I am very interested in doing this to both of my cards. They top out at 1270 MHz @ 1.21v, but load temps are only 44c. There is so much room for OC.
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Snowdevil
(16 items)
 
ASUS G750JM
(9 items)
 
 
CPUMotherboardGraphicsGraphics
[i7 4790K @ 4.4 GHz (1.186v)] [Asus Sabertooth Z97 Mark S] [nVidia Geforce GTX 1080] [nVidia Geforce GTX 1080] 
RAMHard DriveCoolingOS
[G.Skill 32GB DDR3 2133 MHz] [Crucial MX100 256GB] [Phanteks PH-TC12DX] [Win 10.1 Pro] 
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[LG 29UM65 (2560x1080)] [QNIX Evo II LED (2560x1440)] [WASD v2 Tenkeyless] [NZXT Hale90 v2 ] 
CaseMouseMouse PadAudio
[ThermalTake GT10 Snow Edition] [Razer Mamba - Chroma] [Razer Kabuto] [Razer Man O' War] 
CPUMotherboardGraphicsRAM
i7 4770HQ Intel HM87 Express Chipset Geforce GTX 860M 8GB DDR3L 1600 MHz 
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post #10066 of 16498
Quote:
Originally Posted by OccamRazor View Post

It has been debated to exhaustion! Its the way clocks are generated inside the chip! Just keep your eyes on AB or PrecisionX monitor, it will tell you the real clocks as boost messes with the GPUz and some bench programs readings!

Cheers

Ed

(Team skyn3t)

Thanks Ed, and sorry for beating a dead horse...I tried finding the answer in other posts, and read as much as I could in this thread but 1,000 pages is just too much tongue.gif

I plan on flashing to skyn3t bios this weekend!
post #10067 of 16498
Many BIOS Title names provide do not contain "Ti" but ROM names do. I take it was just omitted? I am not being picky, but I want to be 100% sure I am flashing the right BIOS!
post #10068 of 16498
I think I burnt 1 up. Artifacting now.... wahhh

Just waiting for the replacement.

That skyn3t bios is great! Huge increase for my results. From 1227 to 1303. No warning signs on mine though, she just quit during 3DM V run in sli.




FF
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post #10069 of 16498
Quote:
Originally Posted by fishingfanatic View Post

I think I burnt 1 up. Artifacting now.... wahhh

Just waiting for the replacement.

That skyn3t bios is great! Huge increase for my results. From 1227 to 1303. No warning signs on mine though, she just quit during 3DM V run in sli.




FF
smile.gif

Did you push voltages too far? Is it artifacting at stock speeds also?
post #10070 of 16498
No, I had voltage at 1.082 using the skyn3t bios. I'm sure it's just an anomaly, as my other cards work just fine. Yeah it artifacts @ reference.

I ran the same settings with 2 different cards no problem. I had been running these off and on for weeks with no issues

It was my best overall performer. I got 1240/7840 on air b4 the skyn3t swap. Then it got to 1303/7322. Doesn't seem that high to me. asic of 77.4.

Maybe I just pushed it for too long. I do put them back to default for a bit after running a bench to allow then to cool down, and I ran Unigine benches which showed a max of 79.

I added another gpu fan and brought it down to 72-73. Maybe a bad solder, or bad vrm.


New 1 should arrive tomorrow according to the latest from UPS.

Gotta go to wcing now, don't want to take any chances...


FF
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