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[Official] 7870 Tahiti LE (XT) Owners Club - Page 509

post #5081 of 5244
The fps loss issue wasn't on Valley, since I wouldnt know how to compare it because it was my first time using it. The fps loss were from the game in question that I mostly play. Like I said, I lost around 15 frames per second in places where I used to get 55-59, and thats a fact. Metal indeed was helping me, and I appreciate all his help. First we tried just ticking the boxes of "allow voltage monitoring" and "allow voltage control" on msi. I set my voltage to 1100mV and run valley. My voltage reads were about 1.225 or so. We then tried to enable unofficial overclocking without powerplay support and see if it worked, but still the reads were 1.225. We also tried using "force constant voltage" and/or set the power limit to +20, and still no luck. It wasnt until he gave me these commands to put in the .txt file that the voltage got reduced as it looked in OSD. I used Valley with extreme hd settings, checked the temps and at the end they stabilized at around 70~72c with around 55% of fan usage. The gpu load was up and down when changing scenes (perfectly normal), and the voltage stopped moving at 1.156. I know I left the clocks at 975 so I was very happy with the results. By the way, I forgot to add that before I added those VDDC lines I disabled constant voltage and unofficial overclocking to try to revert it back to default settings.
At the end I tried using these settings with FFXIV (1.156V, power limit 0%, 975gpu clock, 1500memory clock, and with the VDDC lines saved already on the .txt file), and thats when I noticed the huge frame loss. The rest I have explained already.
Edited by k4ever - 10/4/15 at 12:33pm
post #5082 of 5244
Sorry if I was being a dick... I am trying to help you

I have found the on screen display voltage (OSD) monitoring to be very unreliable. I haven't adjusted VDDC_CHL8228_VIDReadback=0 in my config file. Which is suppossed to work for an accurate OSD voltage (and seems like it was working for you?). I just alt-tab out and look at HWiNFO (or GPU-z) which is an accurate reading.

I played FFXIV for a long time and I get solid 60fps except in Mor Dhona (now) Idyllshire or wherever there is heavy player congestion.

1.156V might be too low a voltage.

Here are my settings as a reference, they may be to help you.
(I have ULPS disabled - I'm running crossfire and my fan control is disabled - water cooling)

Show me your .txt file and that will give me an idea of what's happening




Edited by PaddyND - 10/4/15 at 12:43pm
post #5083 of 5244
I downloaded gpu-z and checked the voltage reads. When using settings 1100mV, +20, 1000mhz gpu, 1500memory on msi, gpuz voltage read is 1.195V. I changed the voltage through the use of the msi slider again up to 1.3V, and the value in gpu z never changed. It remained 1.195V.
Msi is not changing any voltages.

EDIT: When running a Valley benchmark, the game crahsed 2 times. The first one was when I was using the settings I posted above over here, and the second one crashed even when I set the gpu clock down to 925.
It seems the only way to keep it stable is to run it at stock voltage 1.225 either with 925 or 975, depending what temps I want to deal with at the moment.
Edited by k4ever - 10/4/15 at 1:40pm
post #5084 of 5244
Even with
VDDC_CHL8228_Detection=6:30h
VDDC_CHL8228_Defaults=C8 88
VDDC_CHL8228_VIDReadback=0

In the config file?

That should ensure you've unlocked voltage control.
Edited by PaddyND - 10/4/15 at 1:50pm
post #5085 of 5244
Quote:
Originally Posted by PaddyND View Post

Even with
VDDC_CHL8228_Detection=6:30h
VDDC_CHL8228_Defaults=C8 88
VDDC_CHL8228_VIDReadback=0

In the config file?

That should ensure you've unlocked voltage control.

By checking how the values change in gpu z, while changing settings using msi at the same time, I can get an idea of what is happening with my gpu. With those command lines added under SETTINGS (yes I triple checked that every letter, number, symbol, and spaces are there), the only thing that changes is the voltage .. but ... It only changes when I input any value that isnt 975MHZ for the core clock. It wont matter if I put 1000, 990, 982, 976, 974, 925 .... it will always give around 1.2V. But when I put 975MHZ it goes back to 0.797 like if it was on idle ( I assume the gpu core also goes back to 300MHZ on gpuz ). I can only do this using unofficial oc w/o powerplay support. When I disable this last option, it wouldnt let me change anything as reflected on gpuz. It looks like those lines dont do anything on my card.

EDIT: Well actually the only change I can see happen when I added those commands were that when I run Valley, the voltage reads, using msi OSD, 1.156V instead of 1.225 when running it without them.
Edited by k4ever - 10/4/15 at 2:13pm
post #5086 of 5244
Hmmm. That's interesting.

Can you force a constant voltage lower than 1225?

Like 1175. Power limit @ 0%

And see if you can run @ 1000MHz with no clock throttling

Edit* is your voltage set to 1156? It sounds like those lines are working.

1225 is the default target voltage for the sapphire xt. So your OSD will always show 1225 no matter what you set the voltage to (if you delete those lines). 1156 is your actual voltage. Are you crashing at that voltage? If so bump it to 1175
Edited by PaddyND - 10/4/15 at 2:21pm
post #5087 of 5244
Quote:
Originally Posted by PaddyND View Post

Hmmm. That's interesting.

Can you force a constant voltage lower than 1225?

Like 1175. Power limit @ 0%

And see if you can run @ 1000MHz with no clock throttling

Edit* is your voltage set to 1156? It sounds like those lines are working.

1225 is the default target voltage for the sapphire xt. So your OSD will always show 1225 no matter what you set the voltage to (if you delete those lines). 1156 is your actual voltage. Are you crashing at that voltage? If so bump it to 1175

I just checked that the only way to get lesser voltages is by ticking on the "force voltage control" box along with unofficial oc w/o powerplay. I tested extreme hd on valley with 1100mV, 0% power limit, 1000mhz and 1500mhz, and it didnt crash. The voltage reads on OSD were of 1.133~1.145, but when I alt tabbed I could see gpuz showing voltages around 1.109mV (maybe thats because the Valley screen window was minimized at that point and when I switched to it back the voltages increased right away again to 1.137ish.
post #5088 of 5244
Quote:
Originally Posted by k4ever View Post

I just checked that the only way to get lesser voltages is by ticking on the "force voltage control" box along with unofficial oc w/o powerplay. I tested extreme hd on valley with 1100mV, 0% power limit, 1000mhz and 1500mhz, and it didnt crash. The voltage reads on OSD were of 1.133~1.145, but when I alt tabbed I could see gpuz showing voltages around 1.109mV (maybe thats because the Valley screen window was minimized at that point and when I switched to it back the voltages increased right away again to 1.137ish.

Do you have different idle and load clocks/voltage?

In GPU-z if you click on the voltage, you can cycle it to max. Close gpu-z (make sure it's not running in the background), then re-open it and run Valley again. then cycle to max and see what it says


Edited by PaddyND - 10/4/15 at 5:40pm
post #5089 of 5244
The most it goes is 1.150V on max. Thats with the voltage set at 1175mV with msi AB.

EDIT: I managed to play for more than 1 hour and the gpu was pretty stable running at 72c, 55% fan usage, 1000mhz core, 1.175V set on msi, with 0% power limit. Frames per second increased as well. I had to force constant voltage and use unofficial oc w/o powerplay.
Should I keep increasing the gpu core clock on 10/15 increments until it becomes unstable and then increase the voltage at increments of 25? I guess its gonna get to the point where the temps will be getting too high for my tastes and thats where I should stop the tweaking, correct?

EDIT 2: I tested with valley this setup: 1000MHZ with 1.175V ( power limit +20 and many other options constant ). It gave me 34.5fps average on the benchmark, and 1444 score. I then tried 1010mhz with 1.175v. It gave me 35.5 and 1486 score ( looking good ). Temps increased by 5c (77c). Tested then with 1020mhz and 1.175 and it gave the same result as with 1010mhz (35.5/1485). I thought that maybe it needed more voltage so I upped the volts to 1.200 and tested it (with 1020mhz). It gave me 35.6 with 1488, so the difference between 1010/1.175 and 1020/1.200 was negligible. Temps increased to 79c. Finally I went crazy and increased the voltage to 1.225v and the clock to 1035mhz. Benchmark crashed and I was forced to reboot the pc manually.
I thought I could at least increase the clocks of my gpu to 1100mhz but it seems that may not be the case. Maybe my card is already old, and in these 2+ years the components havent been properly taken care of. Heat inside the case may have charged a toll on the sweaty gpu during the hot seasons, and it wasnt until this last weeks where I wanted to do something about it. Either that, of Im not sure what Im doing wrong. What I noticed is that using msi AB is not as easy as it seems, at least for my card. Only way to force tweaks in voltage using msi is by checking on the "force constant voltage" box and enable unoffical overclocking without powerplay. Some people dont need to touch these settings. They just need the VDDC commands in their ini files and they can tweak their voltages at their leisure. I also noticed that if I set the voltage with the slider in AB, the voltage shown in GPUZ will be 0.025v less (eg: I set it to 1175, and gpuz shows 1.150). And then in the game the voltage reads even less, but maybe this is caused because that number will be the max voltage allowed when the load is at 100%. Im not sure about this though.
What about the temps? Maybe since it was hitting 80c already, the system wasnt as stable with this different numbers and crashed at those temps? I dont know if this has anything to do with it as well. Before I did any tweaks, the system will crash everytime it hit 90c.

EDIT 3( and hopefully last one): I decided to set everything back the way it was with the only difference that I have now added the VDDC lines on the AB ini file.
The original problem was the temperature, even when I set the clock at 925mhz. After realizing the xt was drawing more voltage than needed (1.225v), it lowered when I added the commands. Now I can play at 975mhz with 1.156v and temps dont go over 80c with 80% fan usage (custom). Also the fps loss problem disappeared. It seems tweaking the xt actually was doing more harm than good, so with these changes Im pretty content.
Edited by k4ever - 10/4/15 at 10:43pm
post #5090 of 5244
might be easier to just use vbe7 and flash the bios with the settings..

id try 1.188v @ 1150/1500 altho you may need 1.215v
 
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