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[Official] NVIDIA GTX 780 Ti Owner's Club - Page 1006

post #10051 of 16504
Quote:
Originally Posted by Renairy View Post

Someone was saying regardless of software, the GPU still works in 13Mhz increments.
So i did the math and worked out that 1300 isn't part of the table, instead 1306 is.
Since 1202 is the last clock on the boost table in stock BIOS:

1202 + 13 + 13 +13 + 13 +13 + 13 + 13 + 13 = 1306Mhz

I managed 1306Mhz / 1.187v - Boost 2.0 enabled rolleyes.gif
Though i cannot even touch my mem at that clock or it gets unstable quick.

So far it is rock solid stable @ 1306Mhz, Boost enabled and only 1.187v (starts off with 1.2v but drops a step due to voltage limit)
Tested Far cry 3 (fully maxxed 8xMSAA, Ultra - gave me between 70- 100 FPS !!!!), Crysis 3, Valley, Heaven, Fire strike, BF4 and Tomb Raider applaud.gif

Not gonna worry with benchmark scores since win8.1 skews em hard.



Go Ti GOGOGOOGOGOG

Can someone help me understand the discrepancy between the reported GPU clocks in GPU-Z and the stated 1306MHz clock? The two numbers aren't even close even looking at Boost clock in GPU-Z.

Also...can the stock BIOS push past 1202 at all?

Thanks!
post #10052 of 16504
Quote:
Originally Posted by ocsmash View Post

Can someone help me understand the discrepancy between the reported GPU clocks in GPU-Z and the stated 1306MHz clock? The two numbers aren't even close even looking at Boost clock in GPU-Z.

Also...can the stock BIOS push past 1202 at all?

Thanks!

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)
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post #10053 of 16504
Once again, is it perfectly safe to use skyn3t modded BIOS with air-cooled cards? After those BIOS, no LLC mod is needed correct? I know I asked this before, but those that Power Target of 100% to 200% slider looks very dangerous. Where should someone EVGA GTX 780 Ti SC ACX keep their power target at? I am very comfy with flashing and getting 1.21v, but I am not comfy if that 300W to 600W slider thing will kill my new baby...

Sorry if I asked this question before - better safe than sorry!
post #10054 of 16504
Quote:
Originally Posted by MonarchX View Post

Once again, is it perfectly safe to use skyn3t modded BIOS with air-cooled cards? After those BIOS, no LLC mod is needed correct? I know I asked this before, but those that Power Target of 100% to 200% slider looks very dangerous. Where should someone EVGA GTX 780 Ti SC ACX keep their power target at? I am very comfy with flashing and getting 1.21v, but I am not comfy if that 300W to 600W slider thing will kill my new baby...

Sorry if I asked this question before - better safe than sorry!

Answered your question here: http://www.overclock.net/t/1425102/updated-ab-b18-team-skyn3ts-unlocked-ncp4206-voltage-llc-mod-tool/1000_100#post_22156164

Read my article on TDP:

"The PT is the increase of TDP (thermal design power) which is determined by the chips maker (GK110 =250W) but this is not a fixed value, refers to the maximum amount of power the cooling system, in this case a chip, is required to dissipate. The TDP is typically not the most power the chip could ever draw, but the maximum power that it would draw when running "real applications". This ensures the chip will be able to handle essentially all applications without exceeding its thermal envelope, or requiring a cooling system for the maximum theoretical power.
"TDP is meant to be the wattage of the processor at load. I say "wattage" because it is unclear if this is meant to correspond most immediately to how much power is consumed in watts, or how much heat is produced in watts, but as near as I can tell the TDP is pretty much meant to indicate both" GL



(where C is capacitance, f is frequency and V is voltage)

Now, you dont have to make complicated calculus or anything like that because you have this chip here:



It monitors real-time voltage and power draw and its where AB gets its reading from the VRM´s! wink.gif

Stock bios come with 250W TDP (AKA PT) so when its at 100% you will have 250W of power draw, if you increase it to the max stock 106% youll get: 250x106%=265W
The same is with modded 300/400/500W bios what you see in AB or precisionX is the percentage above what you set!
Ex: with a 500W bios (Slider set to maximum of course) you see 60% usage, this equals to: 500x60%=300W
YOU CAN DIRECTLY CONTROL TDP WITH THE SLIDER! thumb.gif

Now, why has AB a 300% slider while PrecisionX uses 200% for the same bios with the same PT?
Well, AB and precision have different interfaces so the readings are different for the same thing, just keep in mind the base TDP value and make your calculations from there
It doesnt matter what the % slider is in any program, just increase it if you having stutters or frame drops and when making calculations always make them from the base TPD with my formula:

aW x b% = cW (a= bios base TDP, b= OSD TDP, c= aproximate power draw)"



Cheers

Ed

(Team skyn3t)
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post #10055 of 16504
Sorry if I jump in in an exsisting discussion.

Read much in the Titan`s Thread with all the Bios they were made with the link to the Site with the Users Custom modification Ones.Tried many of them.In the end I made my own Bios(which i think the most based on orbmu2ks work ) or was using the DS v4 Bios from svl7 .But Titan is not the topic.

This time i got the GTX DirectCUII Ti (bettter noise and not so sensitive(sensitive?,sorry I am German) on the VRMs like Ref. Ones(On Air) simply said,of Course flashed with one of the Skynet Bios.Thanks for the work by the way.

Sorry, people writing like ......(don`t get it wrong) like no tommorrow and i don`know if this Question has been discussed before.

Can someone tell me please is it possible to change the Clocks in Skynet`s Bios(for the GTX780 TI Direct CUII) with KBE , flash it and don`t get a black Screen like you do when you change Parameters for example in the different Titan svl 7 Bios ?.

Greets
Edited by Guitar Wolf - 4/23/14 at 4:24am
post #10056 of 16504
Wow, google translate sucks!
post #10057 of 16504
Quote:
Originally Posted by Jimhans1 View Post

Wow, google translate sucks!

Haha. Yes it does biggrin.gif
post #10058 of 16504
Quote:
Originally Posted by MonarchX View Post

Once again, is it perfectly safe to use skyn3t modded BIOS with air-cooled cards? After those BIOS, no LLC mod is needed correct? I know I asked this before, but those that Power Target of 100% to 200% slider looks very dangerous. Where should someone EVGA GTX 780 Ti SC ACX keep their power target at? I am very comfy with flashing and getting 1.21v, but I am not comfy if that 300W to 600W slider thing will kill my new baby...

Sorry if I asked this question before - better safe than sorry!

You are hard-limited to 95C anyway, regardless of TDP. You are also hard-limited to 1.21V. These will ensure you can never get anywhere near 200% TDP. You will also get limited to about 130% TDP by the 75W power limit on the slot unless you increase it (which would put the motherboard at risk). I had to bump the slot limit to 100W to get my Titan to 140% TDP, which is also the limit of what you can achieve with the reference cooler and fan at 5200rpm at 95C.
post #10059 of 16504
That is great! NVidia drivers usually have very high latency up to 600ns, but people report that skyn3t BIOS lower it dramatically due to disabling of Boost, which prevents clock and fps fluctuations AFAIK. Has anyone experienced the same here? You can use LatencyMon to check. DPC Checker only works right on Windows 7 in case you want to use that.

How many people get black screens? If I flash EVGA GTX 780 Ti SC ACX with provided BIOS properly, using --protectoff, and then -4 -5 - 6 commands, is there a good chance I will get a black screen (if there is no power outage) ??? I never had ANY issues with GTX 680 and 770 flashing.
Edited by MonarchX - 4/23/14 at 6:12am
post #10060 of 16504
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.
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