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post #691 of 1336
Quote:
Originally Posted by tha d0ctor View Post
UPDATED

Madmax22 what were your vgpu/vmem voltages for your runs. you should definately be able to push that further with better cooling, well done though you got soem serious points on hwbot, passed me by like 2 to take 4th lol
vgpu was 1.45v give or take a little and vmem was 2.140 I beleive.

Cooling atleast on the gpu is fine now Ive got it on water. Even under max load it barely hits 42c maybe 45c and idles around 31c with the above volts.

Im allmost done redoing my 9550 rig and when I do that one will have the other gtx on water also, I may do some more benching with that one at higher volts and see how it reacts. The 9550 does a little better in benching usually anyways compared to my i7. Atleast until I get better at ocing my i7 that is.
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post #692 of 1336
Quote:
Originally Posted by PizzaMan View Post
Well, it looks like one of my 96GTs is dieing/degrading. The one that mysteriously got stock at 1.38v no matter what I did to the VID table as giving me EUE and unstable machine errors in F@H. It's been folding with this voltage for 3 months. Emptied the work folder 3 times and still getting EUE's even with stock clocks.

Gonna pull the card and see if I can get her back in shape. She could use some more caps and I guess I'm gonna give her a baking for good measure. Got one of those mini switches with 8 of so switches on it. Going to connect it to the VID table so I can change them on the fly. Not a project I was really looking for. I'm in a race trying to catch a friend in PPD and now I'm down another card. Can't get ahead for falling down.


EDIT: Just switched my main display to the card and ran ATItool. I've never seen artifacting this bad and the card still function at all. The whole box turns yellow even with the lowest clock settings it will let me lower it to.
bad luck man, hopefully you can fix it, im presuming by the lowest clock settings you are meaning core/shaders and mem. Maybe baking will do the trick

by the way, i scored a free x600 pro PCIE, so hopefully gonna do some major suicide runs on that to try get some HWBOT points, will try get some good benches with my 8800 when i get my e8400, at the moment an athlon x2 3600+ will bottleneck the **** out of an 8800 when benching, so not much point pushing it atm
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post #693 of 1336
Pic time.

EVGA 7600 GT. Vgpu, Vmem, capjob.





Trying to leave room to prep and mount a LN2 pot just in case. That's hard.





Man, capping is TONS easier with a temp controlled iron. And.......720 degrees F in 7 seconds.
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post #694 of 1336
hi again, ive just been looking through the thread here, and originally i thought that OVP and OCP were the same thing, but now it looks like they are completely different, could anyone explain the difference to me? and for vmodding, the voltage idles a lot lower than it loads at, what is that called? its like the opposite of vdroop.

thanks
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post #695 of 1336
Thats a nice Weller Patch! And yeah..~700F..works like a charm ..darn caps need some good heat to 'stick'. Glad to see your new toy is working out in your favor ...lord knows its only gonna become more valuable to you and your efforts now.
post #696 of 1336
Quote:
Originally Posted by BillG8z View Post
hi again, ive just been looking through the thread here, and originally i thought that OVP and OCP were the same thing, but now it looks like they are completely different, could anyone explain the difference to me? and for vmodding, the voltage idles a lot lower than it loads at, what is that called? its like the opposite of vdroop.

thanks
OCP = over currant protection
OVP = over voltage protection

When OCP trips your card's votlage will normally drop to close to 1v
When OVP trips your card's voltage will drop to 0.00v

So when you're testing a card and you get the black screen, check your cards voltage before restarting. This way you will be able to tell if it's OCP or OVP. OVP normally requires some kind of hardware mod. OCP can sometimes be overcome by raising the BIOS voltage or adding caps to the power phases.

Hope this help.



@Patch. Me likes the capjob you have there.
    
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post #697 of 1336
Thanks CL3P and Pizza

"Idle" voltage is the "2D" voltage that is basically a power saving feature, as I understand it. If the card isn't really doing anything it doesn't feel that it needs to get blasted with juice.
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post #698 of 1336
Quote:
Originally Posted by CL3P20 View Post
@ Patch..the above info posted by Doc looks great..very informative! As for your IC datasheet, there is no OCP/OVP for that circuit. You can adjust the upper limits of the mosfets and cap's by adjusting resistance on the RT pin for the switching frequency...adjusting resistance on the RT pin regulates the frequency at which the caps and mosfets "dump" or "store" power...higher frequencies on the core typically requires a mod to switching freq to keep current supply fast..adding caps will help too.
I'd like to try this on the 7600GT.

The data sheet gives me the equation for picking a resistor.



The default switching frequency is 200 kHz. What sort of bump range should I be looking for? Tiny bump or liberal bump? 200-205? 200-220? 200-300?

If I have a general ballpark I'll use a VR and make myself a little table with the number of turns required for various frequencies to try out.

I'm really excited about this one. Something new for me!

Edit: also. For this resistor mod, would it be preferable to use the grounding pin on the chip (IC reference ground) or any old ground?
Edited by Patch - 1/9/10 at 9:54am
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post #699 of 1336
Quote:
Originally Posted by Patch View Post
I'd like to try this on the 7600GT.

The data sheet gives me the equation for picking a resistor.



The default switching frequency is 200 kHz. What sort of bump range should I be looking for? Tiny bump or liberal bump? 200-205? 200-220? 200-300?

If I have a general ballpark I'll use a VR and make myself a little table with the number of turns required for various frequencies to try out.

I'm really excited about this one. Something new for me!

Edit: also. For this resistor mod, would it be preferable to use the grounding pin on the chip (IC reference ground) or any old ground?
Well the lower the resistance for Rrt, the faster it is going to switch at. Ex.. If you picked a 100ohm resistor for Rrt it would switch at 229kHz or if you picked a 50ohm resistor it would switch @258kHz. Im not sure exactly how fast you want it switching at because I have never attempted this mod before. Ground is ground but it is most preferable to use the reference ground of the IC to eliminate any distortion(noise) since you are dealing with the frequency.
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post #700 of 1336
Quote:
Originally Posted by Voltage_Drop View Post
Im not sure exactly how fast you want it switching .
That's actually my question. I don't know because I don't have any frame of reference for this parameter.

Is a bump from 200 to 202 kHz significant, or do you need to go up to 300 kHz? Then I can pick a resistor size.

Thanks for the ground answer.
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