8800s OVP Mod ......

[T_M]

cold and volts, manage your OCP

[quake6]

Could someone pt vmods for 8800gtx? Thanks

[T_M]

Search

[chew*]

Search

Yep search works, just finished VGPU, cap/choke mod, OVP and OCP

Cards begging for ln2.

Now i just need to find a way to undervolt these crap quimondas.

[CL3P20]

I should try on my GS... hitting limits around 1060 core right now. Inductor mod allows 1.43v before OCP... but I need a tad more.

http://hwbot.org/community/submissio...b_293352_marks

[KanGaXx]

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.....


.

anyone one have those images ??

some good people

[K404]

Tin_EOF has a thread with pics

I'm... feeling too lazy to go a-hunting though, sorry


IMHO only OCP mod is really necessary. Caps got me more voltage to the core, but no extra MHz or stability

[KanGaXx]

yes, the problem is that i have not understand the OCP mod...

i have those:


here i have to replace the 70B with a 472.
i have to parallel solder 122 on the capacitors near the 78X.
I have to remove the 78X ??? ( red ones )



here the 78X are removed it's right ?
what is the white wire circled (red) ???

[K404]

For the OCP mods, measure the basic resistance across each capacitor (the components next to the red ones in the first pic you posted) and solder a resistor of equal or slightly larger value in parallel. This will increase your OCP limit significantly


The 2nd pic with the red circle..... Thats the mod point for the vCore but I have NO idea why the wire is going to a diode. It should go to a 1K trimmer (other end connected to ground)... nice and simple

[KanGaXx]

the reds resistors on the first pics should be removed???

[K404]

Nope Or at least.... I didn't remove them (dont think Tin did either) and I was happy with the MHz I got

[KanGaXx]

i asked that because (in the second picture) they are removed.


that's ok ?

[K404]

I have no idea what effect that would have, sorry.

As it happens, I might be benching a 320MB today. I have the OCP mods done, i'll let you know how it goes, if I get it done

[KanGaXx]

good good i want bench it too

so, it's ok the pic i have posted above ? the parallel is right ?

[K404]

Yea bro perfect

[Calathea]

Thats the mod point for the vCore but I have NO idea why the wire is going to a diode. It should go to a 1K trimmer (other end connected to ground)... nice and simple

Look closer, it's a 1000 Ohm resistor. Probably someone were happy with that slight boost to vCore (Assuming GND on the other side of resistor)

[K404]

Great catch! Yea... my bad. I should have noticed the SMC wasn't "going anywhere"

[KanGaXx]

i have an 1R0 smoking :/
i have removed it, i can replace it with an inductor of a dead board ?

[Calathea]

I would try to find another 1R0 (1.0 uHenry) inductor. Maybe 1R2 or R80 can work, I don't know how precise the value must be.

[tigeredwards]

very good