8800s OVP Mod ......

[hipro5]

Did you expected it?.......Get it......THAT simple and as promised......

This picture includes the VGPU and the OVP of the 8800GTX and 8800 Ultra VGAs......8800GTS is SIMILAR but in anoter position of the PCB......

CREDITS for the VGPU Mod goes to Shamino and vr-zone.....




Here is the OVP Mod in a closer look.....





......and here's an alternative method for more "hardcore" people.....







By doing so, you will NOT ENCODE this f(l)uken VGA's shut down and core powering down problem any more.....
You'll ONLY have to deal of how much VGPU you will feed it until it produses Core artifacts during a bench....
IF you get a "freezing" during a bench, then your VGA's core CAN'T go higher than that......

Happy NVIDIA VGA Overclocking and DON'T pass my scores.....


.

[eva2000]

Sweet. i know a few Aussies who have been waiting for this

[DMH]

Veryy good,you don't know the exact position for the GTS???

[harleybro]

Thank you Hipro!!!!!!!!!!! Is it possible to use a 50Kohm trimmer. I take it the resistance you measure is across the resistor with the trimmer soldered in place?

[hipro5]

Veryy good,you don't know the exact position for the GTS???

Yes I know it but I have to picture it first.......
I'll do it tomorrow.....

Thank you Hipro!!!!!!!!!!! Is it possible to use a 50Kohm trimmer. I take it the resistance you measure is across the resistor with the trimmer soldered in place?

Yes you can.....This will give you about 5.03 measuring RED POINT to ground when the trimmer is FULLY "opened" (at 50KOhms)....

Sweet. i know a few Aussies who have been waiting for this

I know at LEAST ONE.....dinos.....

[dinos22]

[largon]

Corresponding resistor on 8800GTS:

[T_M]

Hipro5, thank you master
Will test it today

[Oliver]

You are doing it again.

Good work.

Keep pushing it.

[hipro5]

Thanks guys.....

For the 8800GTS is the resistor which largon pointed out.....

You can trimm the resistor to show you down to 4.7 - 4.8KOhms....

[massman]

Thank you for sharing, Hipro

[SF3D]

Thanks Hipro! Good attitude like always

Have to do these as soon as possible...

[K404]

Im expecting more ORB abuse soon

Everyone needs to go back and bench again

[dinos22]

Thank you for sharing, Hipro

this is a pretty big deal isn't it and he delivered

[Harshal]

Thanks Hipro!! This is for others as I am not in VMODs yet!!
Yeah.. I reallly need to get into this game of soldering first & then to modding without killing stuff.

[largon]

Just did the mod "hardcore" style:

Desoldered the 5.2KOhmer then replaced with a 4.7KOhmer...
It seems vGPU dropped by ~0.1v consequently - but nothing a little poking of the vGPU mod will not fix though.
Will report if it helps OC'wise.

[NightRaven]

wow this is big news! didnt know of it till the Aussie/s told me about it then i headed this way to find some hipro5 action! and i found it! coolness! will be doing this for my ultra when it comes back from RMA AFTER THREE.. yes 3... yes THREE months of waiting.

thanks hipro5!

[T_M]

Hipro, can you please share the theory behind this mod? What is the resistor connected to etc?

[massman]

this is a pretty big deal isn't it and he delivered

Yeap, I don't own any 8800-series card, though I'm pleased he shared the mod.

[giorgioprimo]

Thanks George

[largon]

Well this is odd.
Tested voltage stability with 3DMark06 on gaming stable freqs of 729/1890/2160:
1.36v (1.33v after droop): OK
1.54v (1.51v after droop): instant GPU powerdown

[wittekakker]

Seems to be working great here, just ran 1.6V 3D, that is 1.7V 2D with my 8800GTS

Thx for sharing Shamino!

EDIT: hmm, still can't beat 720/1600/1040, protection kicks in at higher clocks :/

[T_M]

George, I have soldered a 100k on my 8800 Ultra.
As i trim, it starts from high resistance and goes down.
Once i reach ~7.57k it suddenly jumps down to ~3.362k.

Is the objective to raise the resistance across that resistor? If so, is 7.6k to ground OK?

[largon]

Thx for sharing Shamino!

Only the vGPU mod (which has been around for ages already) is from Shamino, OVP is all Hipro's handwriting.

Too bad my card has not gained from either mod, the vGPU nor the OVP.
Stuck at 729MHz no matter the voltage.

[hipro5]

Well this is odd.
Tested voltage stability with 3DMark06 on gaming stable freqs of 729/1890/2160:
1.36v (1.33v after droop): OK
1.54v (1.51v after droop): instant GPU powerdown

Maybe it's shuts down from over temperature protection or something....

George, I have soldered a 100k on my 8800 Ultra.
As i trim, it starts from high resistance and goes down.
Once i reach ~7.57k it suddenly jumps down to ~3.362k.

Is the objective to raise the resistance across that resistor? If so, is 7.6k to ground OK?

Are you sure you have soldered to the same resistor?......If you have soldered an 100K trimmer, even fully opened, it shouldn't show you more than 5.12K.....

Seems to be working great here, just ran 1.6V 3D, that is 1.7V 2D with my 8800GTS

Thx for sharing Shamino!

EDIT: hmm, still can't beat 720/1600/1040, protection kicks in at higher clocks :/

Same here too - Maybe it's shuts down from over temperature protection or something....