so if I want them BOTH to run at overclocked speed, then I mod both.?
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so if I want them BOTH to run at overclocked speed, then I mod both.?
Yes
can someone please link me to a pic and instructions for the easiest way to volt mod a 7900 Gt to 1.4v (or is that unsafe with the stock cooling?).
I have two in SLI, so I'd need to mod both.
Also, is it tru that the mods can be done with a pencil?
What kind of pencil? HB? etc etc
Any help is greatly appreciated.
I'll be sure to post benchmarks after I'm all done.
I already get 13600 3dmark05 and 8600 3dmark06.
So imagine what I'd do after these volt mods :D
Also, one other question, when you OC a card using the Nvidia control panel that comes with Xtreme G drivers, does it OC both my cards or just the one? many thanks!
what you are looking for is
http://www.xtremesystems.org/forums/...&postcount=162
Cool looks easy enough!Quote:
Originally Posted by nn_step
Can you please help a n00b out and tell me what the things I need to do this are called and would I just buy them from a hardware store?
Conductive ink and conductive tape? :confused:
Also, will a pencil not do? :p
conductive Ink, just walk into any tech store and they can find it quick..
and a pencil will not do..
Last question almight nn step!Quote:
Originally Posted by nn_step
When I OC my 7900 GT in the Nvidia control panel that comes with Extreme G drivers, does it OC both cards in my SLI config?
Hey Guys,
After reading as much as possible about the 7900GT 1.4v mod I decided to do it tonight. I pulled the card out, used conductive ink after taping off the correct trace from the D511 pad to the ground pad. It was done very cleanly and was testing with MM for continuity and again testing once I was in Windows. The mod did indeed increase the voltage from 1.2v to 1.4v. Everything seemed great until I tried running AQ3, and only at stock clockspeeds. I just wanted to do a quick test to make sure I didnt' have any massive artifacts.
Well right after the benchy started my computer just restarted. Once I got back into Windows I again tested voltage, again it was 1.397v. I ran AQ3 again, and the same thing happened. After the computer restarted I ran 3DMark05, guess what, the same things happened. After this I decided to use the Nvidia control panel to "Detect Optimal Frequencies", well after about 3 seconds of it's test the screen went blank for a minute and I got this error message:
http://img153.imageshack.us/img153/7...tled6zu.th.jpg
I don't know what it means but I'm pretty sure it has something to do with my card. This same error continued to happen now when I either "Detected Optimial Frequencies" or anytime I would run a benchmark. The benchie would start up just fine, but then it would shutdown and I would get the above error message.
The card is on H20 and the RAM IC's all have OCZ's RAM sinks, the core temp throughout this whole process never exceeded 29C so I'm hoping it's not a temp problem. Does anyone have any light they can shed on the problem as I'm at a loss?
I just shut down my system and scraped away a little gap between the D511 pad and the ground pad so that there is no continuity between the points. I've checked voltage in Windows and it is back down to stock levels. I'm about to go and test to see if I get the same exact problem I was getting before with both benchmarks and "Detecting Optimal Frequencies. Thanks for any help you can give guys!
Roger_D25.. you are using water...
thats the first thing I would check.
Also make sure that when you put the block on, you didn't knock off, or loosen anything.
Deimos,
Thanks for the quick reply, yeah my card is on water with a DD maze4 block (1/2" ID). The thing is I've had this card water cooled since I bought it with the same setup. I guess I should mention though that I took it off to gain better access to the memory IC's because I installed 8 OCZ ramsinks.
It was very late last night when I was finally able to start testing sytem after the ramsinks and VGPU mod so I wasn't able to pull the card out to take a much better look at it but I will today after I get out of class. I will take a close-up shot of the voltage mod I did but I think everything was done right (But I will leave that up to you guys)!
After I wrote my first message above I shut down my system and scraped off a small gap in the conductive ink trace I made between the D511 pad and ground, unfortunetly the problem still persisted. Also, I had mentioned that when I hit the "Detect Optimal Frequency" button my machine would just shut down, well that happened most of the time but after I made the gap in conductive ink it doesn't shut down anymore. Now as soon as I hit the button my screen gets a bunch of tiny colors dots all over, similar to snow flakes but they are different colors. Also at the same time the screen starts to blink on and off, on and off!
Last but not least everything seems to be fine until I either hit the "Detect Optimal Frequency" option or when I manually change either the core/memory clockspeed and then hit the "Test Frequency" button. My computer does the same things either way, lots of tiny colored dots and then screen starts blinking on and off. I'm expecting bad news guys but I truely was very, very carefull when doing this. I did it on a non-conducitve mat and also used a wrist strap. Plus I've done voltage mods to my last 3 cards with no problems.
PS, Did anyone have any idea as to what the ERROR MESSAGE means or what it has to do with? Thank you guy so much, I know you guys know how bad it sucks when a piece of your hardware is on the frits.
smels like drivers issue .what drivers are you using????
thats nothing to do with the MOD since you have same error with 1.2v.
Try clean all drivers unninstal 3Dmark and instal 84.21 oficial drivers and reinstal 3Dmark.
regards
Try removing the whole trace, with some good solvent, to make sure you are not connecting something that should not be connected with that conductive ink...
Hey Guys,
First of all thank you all for your help and suggestions! Since I last posted I have pulled my card out and looked it over fully, checking for any broken capacitors, or anything else out of the ordinary. After that I took my time and fully removed all of the conductive ink I had put down for the mod.
I then setup my multi-meter to check for continuity (my meter will give a beep anytime there is continuity between the points). Using a magnifying glass I first checked the points I had modded. After that I checked all the other points that were close to where I had put down conductive ink. I did this to make sure that conductive ink wasn't anywhere it shouldn't be. I was happy to see that everything was OK, at least as far as I could see.
I also pulled my waterblock off very carefully to make sure I hadn't inadvertantly crushed the core and to make sure it wasn't grounded anything out. Again everything seemed fine. After that I carefully looked over all the OCZ copper ramsinks I installed the night before to make sure they were installed correclty. Fortuently everything checked out, so I put everything back together again and fired it up.
The only thing I havn't mentioned yet is that I had scraped off the ground point I used before I had put the conductive ink down. I used the same point that is in all the pictures and descriptions about the simple 1.4v mod. I did this because after looking at that ground point I realized there was a white coating over the point. Could doing that have caused my problems guys? I did read that someone had scraped off the ground but I didnt' read it in any of the actual guides so I'm not sure.
I'm now going to uninstall the driver, use driver cleaner, and install 84.21 like you suggested mascaras. If that doesn't work I'm going to download an eVGA BIOS and flash my card with either the same BIOS or the newer version of it. There are two different versions over there for the eVGA 7900GT. Thanks guys, I'll post back with update soon!
Folks, one doudt :
D511 + Ground will give 1,4v
D511 + D508 + Ground will give 1,5v
and only D508 + Ground will give 1,3v ???!
jvidia, yup correct.
Thanks.
I was trying to do something like this:
jVIDIA's 1,3v/1,50v mod switch
http://jvidia.no.sapo.pt/Images/Mods...3v_ou_1.5v.jpg
The idea is to have a switch to change the voltage between a everyday use @ 1,3v and a bench time @ 1,5v.
What do you think ? :D
The dificult part is the wire part. Because I would like to "glue" the wire to the PCB with the same silver ink that i use to do the rest of the mod.
just put 2 litle plates with conductive inK comig from D508 and D511 betwen the switch and then the wires in the litle plates going to the switch :D
its more easy conect the wires to the plates than directly to the INK , somethng like this:
http://img390.imageshack.us/img390/992/mmod13156sm.jpg
lets do it
Thats exactly what I intend to do (except using wire/solder) if my card arrives today :)Quote:
Originally Posted by mascaras
Just to reiterate (I can be real dumb sometimes) this is all I need to do ??, no need to change resistor 'J' ??
thanks
Nope, that's all there is ! :banana:Quote:
Originally Posted by alpha0ne
alphaone the wires its just for us to turn OFF the 1.50Vmod :D
with this wires and the switch we can use 1.30v for the day a day and turning ON the switch we have 1.50v to benchmark :D
Will the attached picture work on a 7900GT as well????
Deimos has it listed under GTX. But on this wesite: http://sg.vr-zone.com/print.php?i=3330 it shows the instructions under the GT section.
-----------------------
All you need is conductive paint. Copper or silver, make sure it's 100%. I reccomend CircuitWriter http://store.caig.com/s.nl/sc.2/category.174/.f
First remove the resistor marked above and replace it with a 50K ohms resistor. This will give you 1.5v for VGPU.
If more voltage is desired, I suggest you move onto step 2: removing the 2 resistors marked to disable overcurrent protection for the card.
You can then move onto step 3: Soldering and connecting this point to any grounded spot. This will give you 1.6v.
Instead of step3, you can do step 4 if 1.7v is required.
Found on:
http://www.xtremesystems.org/forums/...&postcount=188
Many have done it at xtreme:
http://www.xtremesystems.org/forums/...t=92874&page=8
User Powerstrip to OC:
http://www.entechtaiwan.com/util/ps.shtm
Nvidia 7900GT compared to other graphics cards:
http://sg.vr-zone.com/?i=3335
Details @ VR Zone: http://www.vr-zone.com/print.php?i=3437
Power Consumption/Heat Output/Chart
Geforce 7900GT @ Default voltage/Speed 64 watts
Geforce 7900GT @ 745MHz 1.5v 87 watts
Geforce 7900GT @ 780MHz 1.6v 101 watts
Geforce 7900GT @ 800MHz 1.7v 111 watts
Many thanks jVIDIA & mascaras, I'm used to doing this on the old X8500 cards so its been a while :DQuote:
Originally Posted by mascaras
I can actually use an iron better than I can use conductive paint so I will definately be putting in a 'switch', it all seems to be just too easy compared to what I'm used to doing with older cards :lol: :toast:
skankinred you dont need remove any resistor to make the MOD 1.40v//1.45v//1.50v or 1.55v only conductive ink.
I want to do the 1.7Vmod. I need to know if this works on GT cards as well.Quote:
Originally Posted by mascaras
then yes , to 1.7v mod you need to remove the resister and change to a 50K resister and make also the 1.4v ink MOD
change resistor= 1.50v + 1.40v ink MOD (D511 to ground) = 1.7v
yes it works , theres a user already with 1.7v MOD done in the forum
regards