Single PCB GTX 295 Vcore mod

[ibm390s]

SF3D - you rock. Just finished the mod on both cards (removed the green resistor) and i was able to hit 750MHz Core and 1250MHz Mem. Thanks for sharing this great info with us.

[EvoCarlos]

still working on mine
800core on air still pushing but any more than 1600 shader triggers ocp
need to do ocp mod

[Vivi]

whoa evo :O.

thats a FREAKING good card dude

[ibm390s]

evo, those results are impressive. Hope to have some time in the weekend to play more with the cards, but your results are amazing. keep it up!

L.E

What voltage do you use??

[EvoCarlos]

whoa evo :O.

thats a FREAKING good card dude

thanks vivi still more to come on air
only problem is now i need a super duper e8600 mines stuck at 6ghz
the 01 scores is low for the clocks should be closer to 120k i think

evo, those results are impressive. Hope to have some time in the weekend to play more with the cards, but your results are amazing. keep it up!

L.E

What voltage do you use??

thanks
the am3 will be better on my 975 this was just a test on the e8600
and the voltage
well at 1st i tryed 0100010 = 1.2 but it give 1.1v
so now ive done 0000010 = ?? but gives 1.21v loaded

[Solarfall]

lol guys how the f*ck are you able to even see the tiny resistors, im looking at my asus 295gtx card now and im just shaking my head no fooking way i will be able to solder off those tiny things with my shaky hands .. lol maybe i should cut off the excessive coffee drinking habit.

ps. pete or anyone else.. what on earth is a dip swich ?

[EvoCarlos]

lol guys how the f*ck are you able to even see the tiny resistors, im looking at my asus 295gtx card now and im just shaking my head no fooking way i will be able to solder off those tiny things with my shaky hands .. lol maybe i should cut off the excessive coffee drinking habit.

ps. pete or anyone else.. what on earth is a dip swich ?

heres a dipper i did on my 8800gt vid mod gets 1.1v throught to 1.6v in 0.50v steps on the fly


oh and for any one after the data sheet for the ADP3193A its here
page 8 is test circits exsamples and
page's 14/15/16/17 are vid table of slectable voltages (left hand side for vr11-dac)
http://www.analog.com/static/importe...s/ADP3193A.pdf

[Solarfall]

hey thanks evo lol now i get what an dipper is haha and i actually have one laying around somewhere (i think) never just knew what the hell was called, i feel soooooo noobish right now

[ibm390s]

did some testing today and wasn't able to pass 750MHz. Each time i increase the gpu over 750 the driver crash in vantage so i think that i need to increase the voltage a little bit more since both of the cards are watercooled and the temps did not pass 45 degress in all tests. At one point i lowered the shader to 1600 to see if i'm able to run the gpu at higher freq but no luck. I think that the 01010000 = 1.11250v is not enough so i should move to 01000000 for 1.21250v I forgot my DM at work so don't ask about the measured voltage yet, i will do that tomorrow.

[rbuass]

Nice mod; i will do it
Can anyone show the picture to remove OCP?
Thanks for all

[EvoCarlos]

Nice mod; i will do it
Can anyone show the picture to remove OCP?
Thanks for all

im still working on this one

its ether a pencil mod away
or remove the ocp reister and fit a 200k or if the resiter is left in place it will need a 4m Vr to bring it back down to 200k

[EvoCarlos]

rules of thumb for overclocking my gt 200 series---

"GPU overclocking and stability testing

It seems (based on opinions) that only proper way of OC'ing GPU (all clocks) is to start with:
a) pushing shaders up first
b) then push GPU core clocks (maximum up to 1/2 of shaders value)
c) as a last step push memory (VRAM) until it hardlocks your system on stress testing or in games, meaning you need to drop down to last stable value"

ref GT200 chart for clocks..






most common explanations of errors:by "after" from techpowerup forums

"If your system hard-locks, and requires a reboot then your memory is too high.

If your system is showing weird artifacts like flashing colors and intermittent blank screens and/or the driver crashes, then your shaders are too high.

If only the nvidia driver crashes without any visual anomalies, then your core is too high."



@ evocarlos-
i love lamp too,haha!

lamp is good

right so after pushing this card more @ 1600 shader 800 core is the max it will go with just vid mod any thing over 1600 shader hits ocp resauting in a hard off/on to get it back

so railmeat what you posted above is relivent unfortnally id did understand it till just

but heres some 2x card testing on the 975
http://i556.photobucket.com/albums/s...signature5.jpg
http://i556.photobucket.com/albums/s...signature4.jpg
http://i556.photobucket.com/albums/s...signature3.jpg
http://i556.photobucket.com/albums/s...signature2.jpg
http://i556.photobucket.com/albums/s.../signature.jpg

just so you all know the tests were done on air beit tho 4x 80mm deltas


and im doing ocp mod now i dont have 200k vr's so ive used some 100k vr's with a 104smd strapped to one leg of the vr it means i will have a range between 200k and 100k, 100k being the lowist


wish me luck lol

[FatAlbert]

Carlos can you show pics of vmod ?

[EvoCarlos]

Carlos can you show pics of vmod ?

vmod or ocp?
ive had no gain from ocp mod infact ocp mod dont work ,,yet

[FatAlbert]

from vmod

[EvoCarlos]

from vmod

best pics i got and i did not have any flux cleaner left (ignore the ocp mod not sure who said it was that pin!!)



it is just vid mod 1.3v
VID7 VID6 VID5 VID4 VID3 VID2 VID1 VID0
--0 ---0 ---1 ---1 ---0 ---0 ---1 ---0

just rember 1.3v for the stock cooler is to much

[ibm390s]

Carlos, allow me to say WOOOW. I'm impressed by your work. All the great infos posted by you and SF3D helped me a lot and i wanna thank you guys for all your efforts and also for sharing your knowledge with us.

[gmod]

SF3D....Hey man how much would you charge me to just take off the green res on both my Evga 295 Coops with waterblks...Iam fixing to redo my water and this would be a good time to do this...I just dont have a steady hand anymore so gladly will pay someone like to you to to do it for me...

[EvoCarlos]

SF3D....Hey man how much would you charge me to just take off the green res on both my Evga 295 Coops with waterblks...Iam fixing to redo my water and this would be a good time to do this...I just dont have a steady hand anymore so gladly will pay someone like to you to to do it for me...

12w soldering iron

see here look under 0805 Capacitor / Resistor de-soldering
http://www.infidigm.net/articles/solder/



i think its easier to just put a blob of solder on both ends of the bridge then touch the 2 ends with the soldering tip at the same time once its louse it will stick to the iron and come away

i hope this helps

but a stedy hand would be better

[SF3D]

EvoCarlos- Great job with the cards

I will look at OCP as soon as I have some time for it.

SF3D....Hey man how much would you charge me to just take off the green res on both my Evga 295 Coops with waterblks...Iam fixing to redo my water and this would be a good time to do this...I just dont have a steady hand anymore so gladly will pay someone like to you to to do it for me...

Hi! Usually some TV / electronic repair shop will do the job in 5 minutes and they should not charge you much. You can also ask some of your friend etc.

More easy way is to buy good soldering station and start to practice. In no time, you will mod these while sleeping

[EvoCarlos]

EvoCarlos- Great job with the cards

I will look at OCP as soon as I have some time for it.

thanks sf3d the ocp mod may work and i may now be limmted by cooling but its strange how vantage will pass at 800/1600/1300 (core/shader/mem)
http://www.hwbot.org/result.do?resultId=897170

but 03 drops to black screen and -0.01v at the end of gt1 at lower clocks

could win7 be killing my 03 run ??

i was also wandering if pin 16 would change it any but it seams pin 16 is tied to IFB, IDELAY, ISS, and IILIMIT.

[KanGaXx]

sf3d could you please rehost the first 2 immages ? i can't see them

[{Dark-Night}]

sf3d or EvoCarlos, would it be possible for you to post a complete step by step guide on how to do the volt mod from start to finish with pics for each step if possible.
I have managed to get my 295 upto 720, 1552, 1300 stable and can go as far as 740, 1600, 1300. I can set the core to 800 with link shaders and it has no problems in ATI Tool but with furmark or vantage I get driver stop responding error. I think this is as far as I can go without volt mods. Temps are not a issue for my system so running at 800 or higher should be ok for me. This will be the first time I am doing a volt mod so I really want a nice clean easy guide to follow if you guys have time.

Nice work guys, Thanks {Dark-Night}
Pic of my overclock below

[drnip]

sf3d or EvoCarlos, would it be possible for you to post a complete step by step guide on how to do the volt mod from start to finish with pics for each step if possible.
I have managed to get my 295 upto 720, 1552, 1300 stable and can go as far as 740, 1600, 1300. I can set the core to 800 with link shaders and it has no problems in ATI Tool but with furmark or vantage I get driver stop responding error. I think this is as far as I can go without volt mods. Temps are not a issue for my system so running at 800 or higher should be ok for me. This will be the first time I am doing a volt mod so I really want a nice clean easy guide to follow if you guys have time.

Nice work guys, Thanks {Dark-Night}
Pic of my overclock below

Wow! You already have some nice clocks for a single pcb card. You sure you have a single pcb card?

[{Dark-Night}]

Yes mate its single pcb, the thing is before i added the water block the card wouldt go past 690 core but now with the block has changed the card completely.
Some block pics for you