GTX285 various mods.. which may work for GTX260/280/295 also

[CryptiK]

Nice work as always Andressergio

[andressergio]

Nice work as always Andressergio

Thanks mate

[andressergio]

Broke my own record now with the 2/4 vids mod



Cheers
Sergio

[EL RICHARDO]

I have now a Asus 285 TOP with the uP6208AM / VGK939 voltage controller like the one on this page: http://www.syndrome-oc.net/articles....page=4&lang=en I know that pin 9 is the one to use. Anybody has a clue what pot value should I use? Many thank's.

[NapalmV5]

^ just how tight is OCP @ 285/uP6208..

ocp removed/vgpu @ 1.4-1.5 and the 285s could do ~900 core on air easy

ocp is just too tight on 285.. then again i guess that was the point/purpose

[EL RICHARDO]

^ just how tight is OCP @ 285/uP6208..

ocp removed/vgpu @ 1.4-1.5 and the 285s could do ~900 core on air easy

ocp is just too tight on 285.. then again i guess that was the point/purpose

How can I measure my 285/uP6208 OCP resistance, NapalmV5? Is between IMAX2 pin and GND?

[NapalmV5]

285 1gb/2gb ver1.1 OCP mod

dont thank me.. thanks goes to crotale for the ver1.0 ocp mod

pic by chispy



i used a 1k resistor and gained a boat load of clocks @ stock/air cooling on the 2gb evga ftw

good luck!!


ill post results shortly

[NapalmV5]

ocp mod results

ocp: only mod
vgpu: default
vmem: default
cooling: stock/air

clocks gained from ocp mod
core: 18mhz
shader: 36mhz
memory: 162mhz

the 1250mhz mem is actually 1242mhz



if i got time today ill try vgpu mod

[NapalmV5]

sergio: try crotales vgpu mod.. i got ~1.50vgpu


well after ocp mod after capping C75/C76 after lowering 1.3vgpu down to 1.1vgpu on the 2gb v1.1 evga ftw.. im playing grid @ the following clocks comfortably.. can even push 1800 shaders



72core/180shader/180mem clocks gained @ stock/air cooling

v regulation/protection on the 285s is a really nasty beeotch

if gt300 will get the same treatment.. i give up!!

[andressergio]

sergio: try crotales vgpu mod.. i got ~1.50vgpu


well after ocp mod after capping C75/C76 after lowering 1.3vgpu down to 1.1vgpu on the 2gb v1.1 evga ftw.. im playing grid @ the following clocks comfortably.. can even push 1800 shaders



72core/180shader/180mem clocks gained @ stock/air cooling

v regulation/protection on the 285s is a really nasty beeotch

if gt300 will get the same treatment.. i give up!!

thanks napalm but with 1,3 will be fine for me as its a very hughe waterblock, on my next rebuilt i will heavy volt mod it

but on the vids i tried till the ones you said and just got 1,223+ and im playing games at 792/1764/3024...Crysis, Grid, and like 8 more...

I would love to get a nothch more of vcore

Thanks napalm
Sergio

[NapalmV5]

alright.. well youve only done step 1

read/look thru the 3 step vgpu mod post:
http://www.xtremesystems.org/forums/...&postcount=237

step 2 - pencil gets you more.. or replace the resistor with a 500 ohm vr set @ 300 ohm

step 3 - 500 ohm vr set @ 200 ohm gets you more/closer to the 1.39v limit

if the bridging of the vids is done properly you can get ~1.39vgpu

once you reach above 1.3vgpu you gotta perform crotales ocp mod.. start @ 10k ohm vr and if you have to lower it.. you can go as low as 1k ohm no problem

all together it mounts to 4 steps

benefits of the 4 steps ? if all 4 done properly you wont lose any mem clocks.. youll gain core shader and mem clocks

cheers

[majkel84]

Hi guys!
Got a question regarding OCP mod I haven't got the second spot to mount 100k on my Gigabyte GTX285 2GB.



What's the result resistance after mounting this 100k? Now I have 20,1 and 10,7 between this resistors. Maybe it's one of them?


One more thing. Can someone please translate it:
http://phpbb3.ocmag.eu/viewtopic.php?f=155&t=147

Actually I'm polish so i should understand most of it, but...

1. Vgpu - how the heck cut this wire - pin 19 it's so small that almost impossible to see
Well, so PIN 19 - 150-330 Ohm -GND ? And thats all?
2. MEM - PIN 11 - 100k- GND
3. OCP - this point which I marked RED/GREEN to GND
Is that all?

[andressergio]

alright.. well youve only done step 1

read/look thru the 3 step vgpu mod post:
http://www.xtremesystems.org/forums/...&postcount=237

step 2 - pencil gets you more.. or replace the resistor with a 500 ohm vr set @ 300 ohm

step 3 - 500 ohm vr set @ 200 ohm gets you more/closer to the 1.39v limit

if the bridging of the vids is done properly you can get ~1.39vgpu

once you reach above 1.3vgpu you gotta perform crotales ocp mod.. start @ 10k ohm vr and if you have to lower it.. you can go as low as 1k ohm no problem

all together it mounts to 4 steps

benefits of the 4 steps ? if all 4 done properly you wont lose any mem clocks.. youll gain core shader and mem clocks

cheers

Im wondering if my card has some OCP or OVP under your voltajes as i had some issues for ex i get brown screens or blue while playing, i measured and load vgpu is still 1,22ish... so i dont know what im on doubt is that i can get vmem go higher no matter the vid i connect i just keep getting the same...

Currently im playing and passed zillions of gpu tests at 792/1764/3024 at 1,22ish loaded...bench i could go to 800/1764/3096 as i posted my 3DM06 in this thread but not to play Crysis for ex but yest on the first clocks i mention...as im on water i think that my best bet is to rebuilt and hard mod it the good way

i will try to pencil and see what i can get

Thank you very much for your help
Sergio

[NapalmV5]

^

Im wondering if my card has some OCP or OVP under your voltajes as i had some issues for ex i get brown screens or blue while playing, i measured and load vgpu is still 1,22ish... so i dont know what im on doubt is that i can get vmem go higher no matter the vid i connect i just keep getting the same...

Currently im playing and passed zillions of gpu tests at 792/1764/3024 at 1,22ish loaded...bench i could go to 800/1764/3096 as i posted my 3DM06 in this thread but not to play Crysis for ex but yest on the first clocks i mention...as im on water i think that my best bet is to rebuilt and hard mod it the good way

i will try to pencil and see what i can get

Thank you very much for your help
Sergio

no matter the vgpu mod.. ocp mod should be performed first @ isl6327 based 285s

unless vsense is modified

on air cooling even @ 1.1vgpu ocp kicks in like a mofo (solid color screen)


lets hope gt300 features better v regulation

[andressergio]

^



no matter the vgpu mod.. ocp mod should be performed first @ isl6327 based 285s

unless vsense is modified

on air cooling even @ 1.1vgpu ocp kicks in like a mofo (solid color screen)


lets hope gt300 features better v regulation

thanks napalm

[GFDuke]

I really miss the old days when we could mod just about anything with a pencil and some conductive ink. Even the 8800GT vmod was pretty easy.

[NapalmV5]

^ cheers


sub 4 sec @ 783/1908/1431/2gb/stock+air cooling



^ yep stock cooler/70F air/1.1vgpu/cap+ocp mod

[NapalmV5]

[NapalmV5]

evga ssc @ arctic accelero 280gtx cooler/70F air cooling/cap+ocp mod

[NapalmV5]

this is the most i can push on the evga ssc @ arctic accelero/70F ambient cooling

vpgu: 1.58/vmem: 2.32/cap+ocp mod



moving onto vapochill.. goal: hit ~2500+ shader

[andressergio]

this is the most i can push on the evga ssc @ arctic accelero/70F ambient cooling

vpgu: 1.58/vmem: 2.32/cap+ocp mod



moving onto vapochill.. goal: hit ~2500+ shader

damn napalm awesome numbers congrats

[CryptiK]

Awesome clocks for air Napalm.

[NapalmV5]

thanks guys





i just slapped vapo on and i really mean just slapped on.. thus poor contact/pressure/temps

at load barely subzero.. later tonight ill try again for maybe a sanctuary bench etc..

right now id love some -120 cascade/-190 ln2

[NapalmV5]

2538 actual shader is the max @ precision

rivatuner do/support more ??

[GFDuke]

Sweet clocks!! Wowzer. Is that benchable????