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

Wassup guys,Napalm, I hear what ur saying on the temp issue but at what temp does that kick in, i've been running some tests and my card is crapping out before it reaches 65c I just finished stressing at 770/1700/1425 and I didn't get the colored screens it just froze.I'm using ati tool and I was getting artifacts and then it froze. I suspect I have a problem w/ the ocp mod itself, maybe it's not making proper connection but i've looked at it under a magnifying glass and it looks ok but remember I am a noob at soldering. I think i'll redo the mod to see if that helps. I also want to thank u guys again for your help :up:

Quote:

---

Originally Posted by muledeer

Wassup guys,Napalm, I hear what ur saying on the temp issue but at what temp does that kick in, i've been running some tests and my card is crapping out before it reaches 65c I just finished stressing at 770/1700/1425 and I didn't get the colored screens it just froze.I'm using ati tool and I was getting artifacts and then it froze. I suspect I have a problem w/ the ocp mod itself, maybe it's not making proper connection but i've looked at it under a magnifying glass and it looks ok but remember I am a noob at soldering. I think i'll redo the mod to see if that helps. I also want to thank u guys again for your help :up:

---

muledeer

how are you mate ?

this is W7x64 using 195.62

I have the same problem mod is correct..but mine kick over this that are my very stable settings...this combo of core/shader/mem is the faster i have

http://img121.imageshack.us/img121/6...7178214853.jpg

I used GPUTOOL to scan max settings and went fine till that at 1,37vgpu/2,2vmem LOAD

Cheers :up:
Sergio

Merry Xtreme Xmas to all from South America :up::up::up:

Cheers
Sergio

Thanks sergio, I think i'll replace the 150 ohm resis I have for the vgpu with a 200 maybe 250. This will reduce my voltage, correct. I know i'm close with running very good core clocks, but I don't think my memory is up to the task. I think it's a heat problem. I want to buy a wb for the card but money is more than tight at the moment :( Maybe santa will bring me one for Christmas :p:

Merry Christmas everyone :up:

muledeer

temp sense kicking in depends on the cooling.. it may kick in @ any temp

your core/shader is more affected by temp than the mem

after ocp mod your mem should run @ 1485 regardless of the core/shader clocks and temps

give the ocp mod another try

btw atitool and the likes is just a toaster good for burning in gpus not to test oc clocks

better to use games/benches to test how far you can oc


merry christmas :toast:

Quote:

---

Originally Posted by andressergio

Thank you my friend :up:

Can I use then the 100ohms vr i bough and just leave it like that without tunning it ? or its a must to use a fixed res ?

Cheers
Sergio

---

every ocp mod ive done @ 4 diff 285s ive used fixed 1/4watt resistor

sure you can use 100 ohm vr but i havent used vr @ ocp mod

Another report guys, I finally got the vdiff mod penciled down to 275 ohms, took a small dremel grinding wheel and very carefully scored the top and 4 or 5 strokes w/ the pencil i'm down to 275. Thanks napalm for mentioning the coating on the resis :up: Unfortunately i'm still getting colored screens. Oh yea, I redid the ocp mod to make sure I had good contact. I also lowered voltages a bit to load at 1.35, trying to get under the 1.37 limit sergio mentioned, still no luck :confused: I know these mods work, I can see the results in volts etc. but it seems my card just doesn't want to respond. I'm going to do more testing on just the mem clocks and see what I get. Later for now.

Major problems, I decided to reversre the mod and go back to stock. I removed the resistiors and now my card won't respond. I checked the volts and it is only getting 0.03 volts :shrug: I hope I haven't bricked my card :mad: Anyone have any ideas

Quote:

---

Originally Posted by muledeer

Major problems, I decided to reversre the mod and go back to stock. I removed the resistiors and now my card won't respond. I checked the volts and it is only getting 0.03 volts :shrug: I hope I haven't bricked my card :mad: Anyone have any ideas

---

why you removed mate ?

I removed the mods because I was getting colored screens even at stock speeds, I removed both resistors and cleaned the lead from the pencil and no response, I don't know what is going on. I'm getting ready to order a 5770 to hold me over until I figure it out. Heck I might even crossfire them and have an upgrade :D

Quote:

---

Originally Posted by muledeer

I removed the mods because I was getting colored screens even at stock speeds, I removed both resistors and cleaned the lead from the pencil and no response, I don't know what is going on. I'm getting ready to order a 5770 to hold me over until I figure it out. Heck I might even crossfire them and have an upgrade :D

---

sorry to hear mate i think i find the sweet spot on mine and at nice volts of course if i push more volts and core i get solid colours...but will try on a 10ohm fixed as napalm suggested if that wont go i will leave as is.

Cheers mate
Sergio

Quote:

---

Originally Posted by muledeer

I removed the mods because I was getting colored screens even at stock speeds, I removed both resistors and cleaned the lead from the pencil and no response, I don't know what is going on. I'm getting ready to order a 5770 to hold me over until I figure it out. Heck I might even crossfire them and have an upgrade :D

---

Remember the 0 ohm resistor you removed to solder the VR in its place? If you did not replace it, or simply bridge the two points with some solder, you will be getting practically 0v for vgpu. Bridging the two points (as it was stock) should correct your issue.

I did't do crotales vgpu mod only the ocp mod All I have done is napalms vgpu mod crotales ocp mod and the vdiff pencil mod

muledeer

dont worry its not bricked.. how can you brick it.. even if you want you cant.. 285s defenses are impenetrable!!

- step 2/vdiff mod: clean the resistor + the other resistors around it really well with alcohol rubbing

measure the resistance of the resistor.. what is it ??

- ocp mod: @ ocp point if you removed more than needed to be removed your 285 will not boot.. is that the case??

step 2 worx better with better cooling than stock actually all these vmods

stock cooling: step 1 + ocp mod

better air/water/phase cooling: step 1/2/3 + ocp mod

multi phase/ln2/helium cooling: crotales vgpu/ocp + napalms steps 1-3

When I removed the pencil on vdiff mod the resis measures 1800ohms. Remember I scored the top of the resis I think that might have something to do with it and yes when I removed the ocp mod I did removed the small dot ofsolder that was there, cant seem to get it back either would that cause the card to not boot? I've ordered a 5770 to hold me over until I can get this running again. I'll keep rying to get a little solder back at ocp point and will post updates

first post update to include:

Quote:

---

before any further my cooling to vmodding recommendations

stock cooling: step 1 + ocp mod
better air/water/phase cooling: step 1/2/3 + ocp mod
multi phase/ln2/helium cooling: crotales vgpu/ocp + napalms steps 1-3

---

Quote:

---

Originally Posted by muledeer

When I removed the pencil on vdiff mod the resis measures 1800ohms. Remember I scored the top of the resis I think that might have something to do with it and yes when I removed the ocp mod I did removed the small dot ofsolder that was there, cant seem to get it back either would that cause the card to not boot? I've ordered a 5770 to hold me over until I can get this running again. I'll keep rying to get a little solder back at ocp point and will post updates

---

resistor should be just above 700 ohm (stock)

yes thats the reason your 285 is not booting

I did get that resis penciled down to 735 ohms but still no boot should I keep fidling with tha area

the boot issue is not from the resistor

heres the fix

connect whatever is left of the ocp point to the resitor in the blue encircled area
http://i46.tinypic.com/2uzqaae.jpg

Thanks napalm ill give it a go

you may not get it the first or second time.. dont stop till your 285 boots

drop a load of solder to connect the very small point to the resistor

use lead/wire if you have to

if/when connection actually made between the two your 285 will boot again :up:

muledeer

its finesse work because your fixing a disrupted trace due to the removed pad

use the iron as a painter uses the paint brush

start @ ocp point and brush brush brush (as many times it takes) solder towards the resistor.. once you get solder brushed from the point to the resistor.. its traced and your 285 boots again

Ok, here we go,

As i said before i've done the 1.26v mod with conductive ink as explained

GTX xfx 285 "vanilla"

I've read my voltages load (MW2)

GPU - 1.20v
MEM - 2.10V

Nothing more, nothing less

Any idea?

as i have said it 100 times ill say it 100 times more if i have to.. if voltage doesnt increase after bridging @ step 1 your modding is unsuccessful

if conductive ink doesnt work for you.. you got to resort to soldering by using solder/lead/wire to bridge

use the iron and solder per my above post (post#647)

its a good way to learn soldering/get better @ your soldering skills.. if you get the hang on how to paint with solder your soldering is coming of age :up:

Quote:

---

Originally Posted by NapalmV5

as i have said it 100 times ill say it 100 times more if i have to.. if voltage doesnt increase after bridging @ step 1 your modding is unsuccessful

if conductive ink doesnt work for you.. you got to resort to soldering by using solder/lead/wire to bridge

use the iron and solder per my above post (post#647)

its a good way to learn soldering/get better @ your soldering skills.. if you get the hang on how to paint with solder your soldering is coming of age :up:

---

Hi NapalmV5

It's not my 1st time vmodding (conductive ink, solder, pencil, whatever)
Done a lot of those since Riva TNT :D, i've lost the number :up:

Right now it's bridged 1,2,3,4,5,11
If i bridge 1,2,3,4,11,12
If i bridge 1,2,3,4,5,11,12

Always the same result, 1.2v load

I even bridged the "factory" one's.

I didn't read the default gpu/vdimm default, any idea ?

edit:

I've re-read the initial post and you can see that Demo had the exact same issue voltmodding a "vanilla" model

post #349

Quote:

---

So i did 1/2/3/4/11/12 , now im only getting 1.20 vGPU and 2.11 vMEM. this is a vanilla Palit GTX285,so i think this mod is a no go for me.

---

post #345

Quote:

---

As posted earlier my default vGPU is @ 1.12 - 1.13 , a bit far from the 1.16 default.

I bridged #2 only and im now getting 1.19v , still a little far from the 1.23 stated my vMEM reads 2.10 though at stock though.

so 1/2/3/4/5/11 is 1.26 vGPU, while 1/2/3/4/11/12 is 1.26vGPU + 2.15vmem right?

---

post #366

Quote:

---

Temps did rise, but its not hitting 90c or 100% fan speed when gaming.

The mod gave me 1.20v/2.11v , my defaults are at 1.14/2.10 and i didnt get any better gains with the added volts so i just undid the mod, a bit far from the 1.26v/2.15v expected.

Any idea's why my card comes with lower volts?

---

post #368

Quote:

---

My voltages seems to fixed at 1.13-1.14 when my clocks kick into 3d, this is regardless of the application running may it be Ati tool/furmark/3dmark06/vantage/warhead/DoW2/warcraft 3. Its also been stated that defaults are 1.16v and not 1.14.

With the mod i still get the same fixed voltage 1.19-1.20 ( rarely drops to 1.19 ) and 2.11v , does not change with the said applications/benches above.

---

post #371

Quote:

---

1/2/3/4/11/12 as stated by nalpamv5 that gives 1.26v/2.15v , my def voltage under load is 1.13-1.14 in all tested games/bench. bridging 2 bumped me up to 1.18-1.19 , bridging 4+12 gave me 1.20 and 2.11

Vanilla 285, Palit brand.

Read through page 1 to 9 and it seems that im the only user that has a lower default VID and im also getting a lower volts from this mod.



EDIT:
Tried 1/2/3/4/5/11 now and i get the same 1.20vGPU and no increase on the vMEM (as expected ) no real gains on the core speed, any last tips before i remove this mod ?

---

post #376 (tested 2 different vanilla's in this case)

Quote:

---

Asked my other friends with a GTX285 vanilla, Palit and Inno3d both cards also came with a 1.13-1.14 stock voltage, so 1.15-1.16 may not be the reference voltage. I also pointed them to this thread and they got the same results i did. 1.20vGPU / 2.11 vMEM.


EDIT:

Our cards also idle at 1.03vGPU and 2.08vMEM

---

and Chispy for example tried in a vanilla and could achive 1.26v

Quote:

---

Finally , i did the mod on my vanilla eVGA GTX 285 on stock cooling , bridge 1,2,3,4,11,12 = 1.26v .

Results running 3DMark03(Dont mind the score i was using one of my spare rigs to test the card with a P4 )
100% Stable playing FarCry2 for 3 hours at this clocks 783/1728/1404Mhz too.

---

Weird at least no ????