8800GT voltage mods

[oohms]

hi, it says "lower resistance to ground" on the green marked resistor for increasing Vgpu... could it be penciled, too?

I wouldnt recommend using a pencil mod with this one... 200k means you will probably raise the voltage too far with a pencil

Besides pencil mods wear off after a while

[quake6]

I also tried this,but only for memory is working...Now my memory can do 1160MHz (2320MHz)

Any ideas for vgpu?

[yiancar]

can you tell us the name of the vgpu chip?

[quake6]

Bn-9j
31j

[Mod_Aap]

Bn-9j
31j

Than the vmod should be working, are you sure you used a 5k for te vgpu?(And did you solder it to the resistor (the black smd thing), because the yellow soldering point on the picture is just the ground)

[quake6]

I solder on yellow
I'll try for a few day...

[whe3ls]

I need some help. I looked through this thread, but the XFX pictured earlier in the thread doesn't match the pic I have.

Can anyone help me find the correct mod points and read points on this card?



vmem= 6549C8Z
P7408TL


vgpu= ISL6568
CRZ
M744FD8

Thanks!

i also have this PCB and have been looking for a voltmod. the highest i can get on stock voltages is 740/1850/1095. heres also my highest 3dmak06 score.

[nierealny]

hi

who did vmod on this card. I can find read points and vmod point (mem and gpu).

twintech 8800gt xt oc mem samsung

[Vatos_locos]

Anyone know how to mod an Axle 8800Gt non reference pcb ? i made a thread and i am pissed off that i cant mod this card

here is the thread
http://www.xtremesystems.org/forums/...d.php?t=194364

[HitandRun]

Anyone know how to mod an Axle 8800Gt non reference pcb ? i made a thread and i am pissed off that i cant mod this card

here is the thread
http://www.xtremesystems.org/forums/...d.php?t=194364

You got a PM!

[Vatos_locos]

thanks HitandRun i appreciate it

[Vatos_locos]

here is the VCore mod For the Axle 8800Gt with the zerotherm cooler Confirmed it works with a 50k Vr but she has overvoltage protection @ 1.3Volts now i have to find the ovp mod :p

[HitandRun]

here is the VCore mod For the Axle 8800Gt with the zerotherm cooler Confirmed it works with a 50k Vr but she has overvoltage protection @ 1.3Volts now i have to find the ovp mod :p

Nice! What clocks are you getting right now?

[Vatos_locos]

At 1.26Vcore (load) she can go up to 780Mhz Artifacts free with ati tool and 800 for benchmarks but i need to solder some cap's on the coils she have some huge spikes between Vantage tests wile she change 2D to 3D voltages and sometimes she goes at 1.3 and the ovp kicks

i think i found how to override the ovp and set it @ 1.62V but i'am not at home now to test it

for the Vcore measure point i used one of the cap's leg next to the pwm coils and it seems accurate 1.1 with the mod off

[whe3ls]

i did the 1.1v bios mod to my xfx and now i can go up to its looks like 800/2000 maybe higher, if i had better cooling. im on the stock heat sink for now, im waiting for my MCW-60 & D-Tek Fuzion to show up. but im happy for now @ 780/1950/2100 on the stock heatsink

[Vatos_locos]

so i have a very crappy card :S

[nfm]

From my good experience, these cards are not worth watercooling. Thermalright HR-03 performed same as MCW-60 even though the latter loaded +10C less. But Going from stock -> MCW-60 should be great . These cards are limited by 2-phase PWM. Unless you cherry pick your card, don't expect miracles with better cooling. Get a good 120MM and cool the back of the card. @Vatos_locos, forget about the coils, it's worthless and silly. I recommend soldering extra _low esr_ capacitors in parallel to even out the spikes.

[Vatos_locos]

i have the card on water because i have build my case this way so the has a dedicated loop and the cpu an other on
will do with the caps

[nfm]

i have the card on water because i have build my case this way so the has a dedicated loop and the cpu an other on
will do with the caps

Good luck, I can't wait till you solder them. Report back the results, take a pic of caps too

[Vatos_locos]

Thanks Man but first i need to do the ovp mod witch i don't know how lol

[drizzt5]

i did the 1.1v bios mod to my xfx and now i can go up to its looks like 800/2000 maybe higher, if i had better cooling. im on the stock heat sink for now, im waiting for my MCW-60 & D-Tek Fuzion to show up. but im happy for now @ 780/1950/2100 on the stock heatsink

Bios mod eh and you get those clocks? oo, were do u get it? I might wanna try it

[Vatos_locos]

i use the same bios from xfx i can get the core 800Mhz only if i keep the shaders @ stock and the mems @ 1000Mhz but my card had 1.1 V by default :/

[drizzt5]

i need to check what mine is at. Some guy flashed his bios to 1.2v's btw.
http://www.overclock.net/2966590-post8.html

Although his clocks kind of sux, since your getting 800mhz with lower v's.

[Vatos_locos]

i need help too i can' find the ovp mod for my 8800gt and i cant go over 800Mhz without it
anyone can help ?
i will post a pic of the voltera when i go home but i don't have a good camera if anyone has an Axle 8800Gt if he could take a good picture for me plz

[Vatos_locos]

anyone ? i know the pin for the ovp what should i do :p ?
ovp pin to ground is 104KΩ