Gigabyte 5870 SOC

Please use the following mods at your own risk. Nobody here is responsible for damages done!
Credit to BenchZowner for the mods here....thanks Bill :toast:

Simple FB mod: ( corrected!)

http://i40.tinypic.com/240zygk.jpg

Measure the resistance between the circled resistor and a ground and connect a VR ( trimmer ) 20 times the resistance measured.

VID mod:

Check the VRD11 codes for the On Semiconductor ADP4100 from the PDF - http://ceemic.pri.ee/hardware/datasheets/ADP4100.pdf [ nice library Ceemic :D ]
And move the resistors to the proper locations ( logic high (1) or logic low (0) ).
Logic high = front side of the card
Logic low = rear side of the card

photos:

VID Low ( 0 ) - rear side
http://i41.tinypic.com/28aje6t.jpg

VID High ( 1 ) - front side
http://i40.tinypic.com/2ujlhkk.jpg

You have 7 resistors, you have to place 1 resistor for each VID bit ( VID0, VID1, VID2, VID3, VID4, VID5, VID6, VID7 ) to High ( 1 ) or Low ( 0 ) depending on the voltage you want to apply ( according to the ADP4100 datasheet ).
If you leave a spot open ( not connected via a resistor ) on both Low & High it will be considered as Low ( 0 ) by the PWM controller.

OCP Mod:

http://i43.tinypic.com/npgboi.jpg

You can mod the card ( add a LED ) to monitor OCP, or use an oscilloscope :p:
If OCP/OVP kick in your GPU's voltage should be 0.3x after it crashes or hangs.

Application - 5870 SOC Tuner beta:

http://www.benchzone.com/Downloads/T...70socTuner.rar

WORKS FINE FOR E.S. cards
FOR RETAIL CARDS GPU Core Voltage ( Vgpu ) DOES NOT work
The other voltages ( Vmem, Vpcie, Vddci ) WORK FINE WITH BOTH retail and E.S. cards.

Software SOC Tuner ^^

Quote:

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Originally Posted by boblemagnifique

Software SOC Tuner ^^

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:up:

For retail card We are limited to almost 1.3v on gpu :/

Simple FB mod: ( corrected!)

http://i40.tinypic.com/240zygk.jpg

Measure the resistance between the circled resistor and a ground and connect a VR ( trimmer ) 20 times the resistance measured.

VID mod:

Check the VRD11 codes for the On Semiconductor ADP4100 from the PDF - http://ceemic.pri.ee/hardware/datasheets/ADP4100.pdf [ nice library Ceemic :D ]
And move the resistors to the proper locations ( logic high (1) or logic low (0) ).
Logic high = front side of the card
Logic low = rear side of the card

photos:

VID Low ( 0 ) - rear side
http://i41.tinypic.com/28aje6t.jpg


VID High ( 1 ) - front side
http://i40.tinypic.com/2ujlhkk.jpg

You have 7 resistors, you have to place 1 resistor for each VID bit ( VID0, VID1, VID2, VID3, VID4, VID5, VID6, VID7 ) to High ( 1 ) or Low ( 0 ) depending on the voltage you want to apply ( according to the ADP4100 datasheet ).
If you leave a spot open ( not connected via a resistor ) on both Low & High it will be considered as Low ( 0 ) by the PWM controller.

Application - 5870 SOC Tuner beta:

http://www.benchzone.com/Downloads/T...70socTuner.rar

WORKS FINE FOR E.S. cards
FOR RETAIL CARDS GPU Core Voltage ( Vgpu ) DOES NOT work
The other voltages ( Vmem, Vpcie, Vddci ) WORK FINE WITH BOTH retail and E.S. cards.

Sorry made an oops before, corrected the simple FB mod.

Thanks BZ....what's the advantage of the VID mod? Does it get rid of OCP?

OC Guru seems to be working alright for me (including vGPU).
But I need to use DMM for manual voltage monitoring to be sure.

pm me.:)

Quote:

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Originally Posted by miahallen

Thanks BZ....what's the advantage of the VID mod? Does it get rid of OCP?

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VID mode overrides OVP ( Over-Voltage Protection ).

OCP needs to be done regardless of how you mod your card ( if you get it to kick in, don't know if it's necessary )

[ waiting for a front photo to complete the VID mod guide :p: ]

Quote:

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Originally Posted by BenchZowner

[ waiting for a front photo to complete the VID mod guide :p: ]

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Give me about 20 minutes :D

Take your time ;)

Thanks Bill :toast:

http://i161.photobucket.com/albums/t...C/P1000717.jpg

http://i161.photobucket.com/albums/t...C/P1000718.jpg

http://i161.photobucket.com/albums/t...C/P1000719.jpg

Thanks miah.
Post edited, both mods are complete and kind of explained ( in short ) now :)

Can anyone confirm if my line of thought is right:

If I want 1.55vgpu all I need to do is move VID6 R858 (high) to VID6 R859 (low) and VID3
R5253 (low) to VID3 R5246 (high) = 1.55vgpu?

Quote:

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Originally Posted by Jor3lBR

Can anyone confirm if my line of thought is right:

If I want 1.55vgpu all I need to do is move VID6 R858 (high) to VID6 R859 (low) and VID3
R5253 (low) to VID3 R5246 (high) = 1.55vgpu?

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The only two resistors you need high for 1.55 VGPU are 3 and 1, so if all others are low that is correct (leaving pins open results in them being pulled low anyway).

You are right to choose the VID mods rather than screwing with FB pin mods. Error amp gain is set by an RC combo which will be affected and end up quite nasty in some instances (feedback can go positive).

OK.....I did VID mod for 1.55V and I'm getting 1.6V actual. But it seems to be running fine at -100C right now. :)

Yeah, what I forgot to mention is that huge overvoltage.
Check for coldbug temp miah, and get ready for another mod if it's bugging low ;)

My stupid sample artifacted after a few seconds of running at 1.4V ( modded for 1.35V... :@ ) on air, and never came back to life ( keeps artifacting no matter what grrrrr )

Yeah, what I forgot to mention is that huge overvoltage.
Check for coldbug temp miah, and get ready for another mod if it's bugging low ;)

My stupid sample artifacted after a few seconds of running at 1.4V ( modded for 1.35V... :@ ) on air, and never came back to life ( keeps artifacting no matter what grrrrr )

Took her down to -160C once and black screened on me....I'm pretty sure it was CB
Testing with Vantage right now, but it doesn't wasnt to run at more than 1250MHz :(
Testing at -80-90C now....

How can I monitor for OCP?

I may be bugging low :(

Yup....definitly CB around -160C :yepp:

OCP Mod:

http://i43.tinypic.com/npgboi.jpg

You can mod the card ( add a LED ) to monitor OCP, or use an oscilloscope :p:
If OCP/OVP kick in your GPU's voltage should be 0.3x after it crashes or hangs.

You can try disconnecting the TTsen pin ( temp sensor ) to see if you can get the CB temperature lower.

Well....I'm about done for today. Not too please with the results :(
Passed Vantage @ 1300/1300 but only with slow CPU (i5 670 @ stock), once I OCed the CPU (pushed the GPU a little harder?) the GPU would fail at 1300 :confused:
It was doing fine at 1250MHz at -70C...but dropping temps all the way down to -150C wouldn't get me through at 1300....

I'm thinking I will VID mod again for sloightly less voltage, maybe I'm overdriving it? Based on the symptoms you describ, I'm not hitting OCP, so that's good. But somethings not right....or this GPU just sucks....I'll try again tomorrow :up:

Thanks again for the help Bill :toast:

edit - OP updated ;)

I wouldn't do a VID mod until you've tested the card, no way to know if 1.6V is the sweet spot.

Yeah....a bit of trial and error really :rolleyes:

After the VID mod, the OC Guru SW will still allow an extra 0.2V so I could have tried up to 1.8V via the SW (but I didn't :p:)
I think I'll change to a 1.4V VID tomorrow and use SW to find the sweet spot between 1.4-1.6V

TT Sense works with a NTC thermistor - it should not affect the cold temp throttling at all really because NTC thermistors will hold their resistance high well into the sub-temp threshold (that's why they're NTC :) ). This prevents excessive sinking of the 122ua to ground, thus keeping the voltage at the comparator above the throttle threshold. I doubt lifting that pin will do anything in this case, although I guess you're free to try.

We ( well, at least I ) don't know the location of the thermistor, could be near a hot source, won't make a difference more than likely, but I do remember saying such things in the past and the results proving otherwise ;)

Try it then I guess. Most NTC thermistors will hold their resistance beyond -75 Celsius without a problem.

how can i use gigabyte soc tuner for my vga ?
the vga is gigabyte GV-R5870D5-1GD-B

Quote:

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Originally Posted by siavash_shojaee

how can i use gigabyte soc tuner for my vga ?
the vga is gigabyte GV-R5870D5-1GD-B

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You can't.
This tools is made for the Super Overclock edition which carries different PWM controllers.

No matter what you do, it won't work.

Quote:

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Originally Posted by BenchZowner

You can't.
This tools is made for the Super Overclock edition which carries different PWM controllers.

No matter what you do, it won't work.

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how can i give voltage to memory?

Only with a hard mod, and if it uses the standard Samsung memory chips you will gain nothing with higher voltage.

So there is absolutely no way to change the voltage through software.. :( Ab or anything at all? I already hard modded my mobo.. If the mod actually helps then I guess it's worth it otherwise a no go for me.. :(

Others seem to be able to change the GPU core voltage with the software I linked.
My card didn't ( funny, I'm the only one :D ).

Afterburner ? for sure no.

Try the tool I linked.

Quote:

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Originally Posted by Bodar

So there is absolutely no way to change the voltage through software.. :( Ab or anything at all? I already hard modded my mobo.. If the mod actually helps then I guess it's worth it otherwise a no go for me.. :(

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There is using OC Guru. Vgpu up to 1.30v and Vmem up 10 1.70v. :up:

Quote:

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Originally Posted by Jor3lBR

There is using OC Guru. Vgpu up to 1.30v and Vmem up 10 1.70v. :up:

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He was asking about a non-SOC card ;)

Quote:

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Originally Posted by siavash_shojaee

how can i use gigabyte soc tuner for my vga ?
the vga is gigabyte GV-R5870D5-1GD-B

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Is there a way to change the oc guru software to get 1.5v or 1.6? I've managed 1.5v on a regular 5870 through software before.. thanks so much! Sorry I forgot to mention it's a retail SOC

Yes, do the VID mod posted for 1.5V....then OC Guru will default to 1.5V and allow SW adjustment up to 1.6V :toast:

Quote:

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Originally Posted by miahallen

Yes, do the VID mod posted for 1.5V....then OC Guru will default to 1.5V and allow SW adjustment up to 1.6V :toast:

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Mia,
If the VID mod overvolts by 0.5v all I need to do is perform the 1.40vid mod and this will be raised up to 1.55v thru OC Guru?

No....OC Guru only allows an additional +0.1V added to the set VID ;) Set your VID on 1.4V and you'll default to 1.4V, OC Guru will allow you to raise that up to 1.5V :toast:

Quote:

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Originally Posted by miahallen

No....OC Guru only allows an additional +0.1V added to the set VID ;) Set your VID on 1.4V and you'll default to 1.4V, OC Guru will allow you to raise that up to 1.5V :toast:

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I read somewhere here that either you or benchzowner where having 0.5v of overvolt? So if the vid was set to 1.55v you were at real 1.6v?

Yes, that's correct.
Mine and miahallen's (?) card overvolt by 0.05V, so if you do a VID mod for 1.35V you'll get 1.4V, etc.

I make fb mod with 20kOhm and vgpu def is 1.25v, with soft You can push it to 1.35v. But my problem is ... at stock cooling and stock MHz I get freez in any 3D bench, when I push some more voltage then I can close to 1GHz on gpu :rofl: with air, on ln2 with 1.4v I cannot complete any 3D bench with temp -100C or sub @ 1150MHz on gpu.

I think MSI card is mouch better than GB SOC.

Quote:

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Originally Posted by BenchZowner

Yes, that's correct.
Mine and miahallen's (?) card overvolt by 0.05V, so if you do a VID mod for 1.35V you'll get 1.4V, etc.

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I only got an extra 0.05V when I did the 1.55V VID mod (so I got 1.6V actual).
When I did the 1.4V VID mod, I got 1.4V actual :)

Quote:

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Originally Posted by DEVIL K-ce

I make fb mod with 20kOhm and vgpu def is 1.25v, with soft You can push it to 1.35v. But my problem is ... at stock cooling and stock MHz I get freez in any 3D bench, when I push some more voltage then I can close to 1GHz on gpu :rofl: with air, on ln2 with 1.4v I cannot complete any 3D bench with temp -100C or sub @ 1150MHz on gpu.

I think MSI card is mouch better than GB SOC.

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From what I understand, the FB mod will not adjust OVP...the VID mod will :up:

Exactly what miah said DEVIL.
I'm quite sure that you're getting OVP'd.

Ok, but also without mod and on any cooling solution I have freez in 3d test. With voltage adjust only from software card cannot complete bench at 1GHz.

Quote:

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Originally Posted by DEVIL K-ce

Ok, but also without mod and on any cooling solution I have freez in 3d test. With voltage adjust only from software card cannot complete bench at 1GHz.

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Sorry to hear about your sample man, mine passes PCMark05 Graphics Suit with 1050Mhz/1350Mhz on stock volts.

Quote:

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Originally Posted by DEVIL K-ce

Ok, but also without mod and on any cooling solution I have freez in 3d test. With voltage adjust only from software card cannot complete bench at 1GHz.

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If it crashes at default clocks and the temperatures are normal, then I guess an RMA is in order.

Tested another sample last weekend with Marc Beier: 1300/1375 Vantage stable.

No coldbug, but sadly enough the card wasn't scaling with voltage at all. Just a bad sample, I guess :(

What vtt?

raised it to 1.25, but no difference from stock.

Got my retail sample today. Anyone have an ES card and willing to take pictures of the PCB and upload the BIOS somewhere? Want to figure out what's keeping the OC Tuner from feeding more than +.1v.


Testing the card now. Passes 3D06 SM3 at 975/1350 with stock volts. Not too pleased at the moment. We'll see what it does with +.1v.

Got some dipswitches so I can do the VID mod. Looking over the VID mod I see the low table has a duplicate high table right above it. The resistors are 10kOhm and to set low to 1 you have a 10kOhm resistor between that VID pin and the gpu vddc. Does anyone know what the high table pins are being pulled to through that 10kOhm resistor? I'm about to solder two 8 pin dipswitches and I plan on only soldering to the ADP4100 pins and then a trace to vddc and whatever the high logic requires. With a 10kOhm resistor between the two logic voltages I should be able to adjust VID with ease and only solder to the card 18 times. Lastly, do I need to do the OCP mod for 1400MHz gpu, if the GPU is capable of it?

Cliffnotes: Anyone know what the logic high pins are pulled to? Is the OCP mod necessary?

Voltage < = 0.3V --> logic low ( 0 )
Voltage = > 0.8V --> logic high ( 1 )

I'd leave OCP, just VID mod the card and test.
If you get shutdowns at a high frequency regardless of the temp & voltage applied ( if you don't have an AC/DC clamp A-meter ) then do the OCP mod.

zomg. Just actually read the ADP4100 datasheet :D The pins are pulled to GND so I just need to pull the various logic high pins to vddc through the 10kOhm resistor. Awesome, now I just have to solder 9 things.

Thanks for the response. I'll check for OCP when/if it crashes :up:

edit: I wonder if pulling pin 47, PWRGD, to 3.3v or whatever it is normally set to would prevent OCP crashes instead of tricking the controller?

double edit: Hrm. Says only if the output voltage it outside of the safe range. So, could pulling the PWRGD pin high permit the use of the FB mod and enable voltages outside of the OVP limit?

Quote:

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Originally Posted by gomeler

Says only if the output voltage it outside of the safe range

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Quote:

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Originally Posted by BenchZowner

VID mode overrides OVP ( Over-Voltage Protection ).

OCP needs to be done regardless of how you mod your card ( if you get it to kick in, don't know if it's necessary )

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Sure you're not looking at OVP Chris...:confused:

From my understanding PWRGD is a signal used to signify the state of the PWM. If the fets get too hot, the output voltage exceeds the limitation, or the current exceeds the limitation then the PWM controller trips the PWRGD signal to the GPU and the GPU then tells the controller to power down. I know on another card if you kept pwrgd pulled high then the card would run if you tripped OCP/OVP.

VID modding the controller manually changes the VID for the controller. Since this controller supports on-the-fly VID adjustments it'll change its output voltage to whatever the table says. The card should still trip if you then use a FB mod past the OVP limit. But perhaps if you pull that pin to the "good" state then you can do whatever you want and it won't shut down.

I may give it a shot later. Need to wrap up an essay and then I'm doing the VID mod and benching. Once I've got some results I may then play with the controller to see if PWRGD does what I think it does. Note: I haven't looked at the controller block diagram. OVP could trigger something internally to shut down, regardless of PWRGD state.

The trouble with playing around with FBRTN is you will fundamentally change the transient response of the circuit at HF because error amp gain is set by FB RTN (the frequency dependant gain and phase margin is important for the stability of VCC especially with the sensitivity of modern die architectures to absolute VCC at negative temperature thresholds). What you really need is an external PS, although those have implications of their own..

Hope I didn't just kill my card. Think I got some flux conducting voltages and messing up the pins and I'm seeing +0.2v on the core. Giving the end of the card an alcohol bath for a few hours and then going to dry it out and pray for the best.

Give it a shot tomorrow, hopefully I can get the card to work. Knew this mod was going to be a nightmare.. soldering is not my forte.

Was able to resuscitate the card this morning. VID modded it to 1.40v and it worked for a little over 2 hours before dying again. Was testing 3D03, 1275/1350 with 1.45vgpu, 1.22vtt, 1.64vdimm at -70C. Fun card bringing it back to life but I think it is now dead :( PWM is doing the same +0.2v thing. I think I'll hook up the core to an external powersupply in a few weeks.

Sorry to hear about that Chris :( GL getting it running again :)

First Ln2 test today this card has potential:

http://img38.imageshack.us/img38/8652/snaphsot0006.jpg

I only did the VID 1.40vgpu mod and it will probably do more on AQ3 and Vantage...

http://img237.imageshack.us/img237/2856/img0322y.th.jpg...http://img30.imageshack.us/img30/2301/img0320zr.th.jpg...http://img195.imageshack.us/img195/895/img0316qn.th.jpg...http://img62.imageshack.us/img62/9567/img0315wt.th.jpg...http://img686.imageshack.us/img686/2103/img0314i.th.jpg...http://img91.imageshack.us/img91/4033/img0323en.th.jpg

the 5870 SOC Tuner beta download link doesn't work. Can anyone forward me a working link ? TIA

How would I do the FB mod if i wanted to LOWER the GPU voltage?