RivaTuner plugin supporting GT2xx and HD4870 Voltage Tuning

[Bo_Fox]

Was it confirmed that it does not work for 4850 cards?

[strange|ife]

downloaded/bookmarked. Will play with this tommorow, been drinking tonight..last thing I need to do is overvolt my card. Hopefully just a nudge will get me past the 822 core on the 4870 with stock cooler(stock cooler is beast on this card). 850 core or higher would be plenty.

[Brama]

fgw,

Shall do that mate and get back to you.

I just finished reading and re-reading the Intersil ISL6327CRZ multiphase closed-loop feedback and compensation PWM Voltage Reg datasheet, the VR used by NV in the die shrink G200 reference cards, GTX 260 55nm and GTX 285 55nm.
Seems NV screwed you guys over with VR cost cutting this time around, mind you the IC itself only costs $5usd or so.

It's a VR designed with cost savings and affordability in mind so it lacks any kind of external low-pin count bus interface accessibility and relies on the pcb designer to set up all the necessary operational values in design and testing phase. There are 8 VID pins which when pulled up the base VID is read by which pins are 0 or 1 and converted to digital signal by DAC. '

Voltage adjustment is done through current offset via the OFS pin, which is polarity dependant for negative or positive offset, switch to Vss (gnd) for neg, switch to Vcc (vin) for pos. Offset is configured through external resistors connected between the DAC and REF pins, the impedance dynamically controls the current which in turn determines the Vout (voltage out).

Long story short, unless NV have some kind of low pin count programmable interface to adjust a pull up or pull down resistor connected between DAC digital VID signal pin and REF voltage reference pin there is absolutely NO CHANCE AT ALL to control Voltage Adjustments via software on either the GTX 260 55nm or GTX 285 55nm. The only way would be to change the resistor between DAC and REF pins, to give a greater current offset to drive Voltage out higher.

If EVGA is saying it is possible on their cards, short of physical changes to the NV reference cards to add this basic functionality I can't see how it is possible at all. I read over the datasheet a good 4 or 5 times just to make sure I completely understood the electrical design and don't see any way to do it.

I still have my "B side" painful!
Thanks NVidia!

[aggiebroz]

I tried to use this on my 4870 and it looks as though it will work, but I still have my 3850 installed(I use it for folding@home). So when I start up the plugin it tells me that a VT1165 is not detected on GPU1(which is correct) and then disables the plugin preventing me from monitoring or adjusting my 4870 voltage.

It would be nice if you could change the plugin to work on the supported card(s) when there is also an unsupported card(s) installed in the system.

[billdavis]

is anyone gaining any overclockabilty with this and cooling with water or better???

[dario fgx]

hi guys!
I'm dario from Bari (Italy)

first of all:sorry for my bad english!

i decided to register at this forum because i want to say: thanks a lot for this wonderful tool !! It works on my gtx 260 216 sp BE but there are some problem: a lot of positive spike and some voltage drops...and let me be more quantitative:

i'm testing only at small overvoltages: 1.2000 VRM output with a small sampling time (0,5s).The thing that seems strange is that the magnitude of spikes are function of the voltage that i decided to set. For example:

If I set 1.1250 (the default value on my be for the 3D profile) and i'll find some 1.1375 small spikes.

If i set 1.2500 i'll find a lot of absurd 1.6000 spikes.

If I set 1.2375 i'll find no spike but some voltages drop.

I believe that this are not real voltage fluctuations because:
1) the vga is stable at clocks that i can't reach before
2) if voltages drop are real the vga would crash
3) if they are real they can't be fuctions of voltage set by the user

I'm waiting for yours useful tips!

dario

I have another big problem.
It seems that overvolting is useful only in atitool where i can reach higher clocks, but in far cry2 and in 3dmark 2006 overvolting causes artifacts to be displayed immediately.

at 1512MHz shaders clock with no ov the system is stable in far cry2 and 3dmark, but it is unstable with 1.2V (<10% OV) with a lot of artifacts !

how it is possible?

in atittol no artifacts were detected even if at 1566MHz shaders!

tnx

[billdavis]

for sure not your cards ram?

ait tool is no where as good as a stability tester as furmark!!!

[Neo83]

Great plugin =)
But I seem to have some problems ATM. Cant get the plugin to work anymore. Had it working yesterday. Did a windows reinstall, and now I cant get it to work. Tryed reinstalling Rivatuner and added plugin according to torturial. Even added the plugin line to the registry like this;

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Unwinder\R ivaTuner\Monitoring\Plugins]
"VT1165.dll"=dword:00000001

Using Windows 7 x64, ASUS 4870 512Mb

Screen;

[Leonardo Aucar]

I instal everything but I still have a problem...



So...What can I do to make it work?

[Blazemore]

I'm having the same problem as Leonardo. Also I have to keep getting the "Multi-GPU support" button screen during start-up of Vista.

[fgw]

leonardo, blazemore,

have you downloaded the updated plugin or are u still using my first version?

anyway, as rivatuner 2.23 is out already and this version finally supports changing voltages for gpus individually, i will update my plugin!

might be available by tomorrow or at least after the weekend ...

[Leonardo Aucar]

I update my RivaTuner and now the plugin is working great...

Thank you.

[I)ickie]

Is there any intention of supporting further VRMs in future?
Or are we restricted to the current VRM because of the restricted EVGA voltage tuner?

[mikeyakame]

Is there any intention of supporting further VRMs in future?
Or are we restricted to the current VRM because of the restricted EVGA voltage tuner?

?

We are restricted by VRM limitations. Volterra are the only ones we know of at present that have writable serial bus register space we can change values in

[Blazemore]

leonardo, blazemore,

have you downloaded the updated plugin or are u still using my first version?

anyway, as rivatuner 2.23 is out already and this version finally supports changing voltages for gpus individually, i will update my plugin!

might be available by tomorrow or at least after the weekend ...

Work now for me also. Thanks

[purecain]

hmm... well i thought i'd give this a shot as my cards are coming to the end of their short life... but i cant get to the voltage modification window....

this is what i'm seeing... any ideas....

os-vista64 referance 4870's

thanks in advance....

[Solus Corvus]

this is what i'm seeing... any ideas....:shrug

Yes, you need to load the VT1165 plugin.

[purecain]

noob question coming....

how do i load it up..... this is what i'm looking at....

edit- when i run the Microsoft Visual C++ 2008 Redistributable Package (x86) installation i get ''external installer stopped working'' i'm sure i installed this before months ago...

[Solus Corvus]

It appears to be correctly installed. In the "data sources" list is there one called "GPU0 \ VRM Output Voltage"?

[purecain]

It appears to be correctly installed. In the "data sources" list is there one called "GPU0 \ VRM Output Voltage"?

quick answer.... no... it isnt working...

[Solus Corvus]

Strange. Perhaps there is something wrong with your VC++ libraries. Maybe fgw has some other ideas.

[purecain]

guttered i cant get this to work... i get an error when installing Microsoft Visual C++ 2008 Redistributable Package (x86) i get this = ''external installer stopped working''

edit-googled the error with no joy.... dont really know where to start with fixing this... can anyone point me in the right direction....

thanks in advance....

[fgw]

hmm, strange!

the failure in installing the redistributable has nothing to do with the plugin!

anyway, it seems you copied the plugin in the correct place and enabled the plugin in rivatuner - good!

look in the folder where you copied the vt1165.dll into. you should find a vt1165.log there. delete this logfile, close hardware monitoring and reopen hardware monitoring again. this simply starts off with a now empty logfile and logs some info into the file.

use the pm system of this forum to send me the logfile, or upload it somewhere and i will have a look at it.

[XLAR8]

first off great plugin, ive beening waiting for someone to do this besides evga. i have installed everything run the registry patch, when i start riva tuner it does not ask me about aplling to first or both gpu's. iam running vista ulti 32 bit and dual gtx 260 core 216's in sli

[Aberration]

hmm, strange!

the failure in installing the redistributable has nothing to do with the plugin!

anyway, it seems you copied the plugin in the correct place and enabled the plugin in rivatuner - good!

look in the folder where you copied the vt1165.dll into. you should find a vt1165.log there. delete this logfile, close hardware monitoring and reopen hardware monitoring again. this simply starts off with a now empty logfile and logs some info into the file.

use the pm system of this forum to send me the logfile, or upload it somewhere and i will have a look at it.

Are you sure? I had the exact same problem until I got the redist installed.