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post #501 of 926
Quote:
Originally Posted by CL3P20 View Post
caps ..only thing thats gonna 'extend' the regulation of voltage...you need more capacitance on the input side of the power phases.

I was afraid of that. They do start screaming pretty loud...
I suppose 900 core is good enough for my 24/7 use then.
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post #502 of 926
Quote:
Originally Posted by CL3P20 View Post
caps ..only thing thats gonna 'extend' the regulation of voltage...you need more capacitance on the input side of the power phases.
I was pondering that, well, why not right.

I guess it's time I try out an official hardmod.

Hhhmmm, should I try 1000uf 16v ones first, or jump to 2200uf?

I saw that for water 1000uf would be safe but then someone else used 2200uf and they were on stock cooler.

And I'm looking at getting 7, am I reading the mods right? Just going for 1 on each point.
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post #503 of 926
Quote:
Originally Posted by rx7racer View Post
I was pondering that, well, why not right.

I guess it's time I try out an official hardmod.

Hhhmmm, should I try 1000uf 16v ones first, or jump to 2200uf?

I saw that for water 1000uf would be safe but then someone else used 2200uf and they were on stock cooler.

And I'm looking at getting 7, am I reading the mods right? Just going for 1 on each point.
yes..7x total

bottom GPU is final rev. for cap placement to clear RAM and pretty much everything else on a mobo...top GPU, caps would hit RAM when in the top slot..so still have to relo those yet.

post #504 of 926
Well, after doing what I should have done in the first place. Under load I am running 1.208 volts steady to the gpu.

Even though GPU-z shows me hitting 1.133 and 1.16 I'm not. As long as I'm hitting the right points that is for measuring vgpu.

So before I jump ahead of myself. I think I'll up my voltage a bit more and run some more tests so I know what my vgpu is doing. Voltage may not be the issue I'm having. Either that or I need to use my dmm on another point maybe for measuring.

I'm using the points NapalmV5 showed to use over at XS.

Anybody know any other points I should use?

And thank you CL3P20 for all your help, I really appreciate it. You're a heck of a commodity for us around here.

Same goes for all of our modding members, you know who you are.
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post #505 of 926
I have some 1000uF ones I wanna try.
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post #506 of 926
Quote:
Originally Posted by NCspecV81 View Post
I have some 1000uF ones I wanna try.
I question, to a degree how much they're needed now.

Ok, so after my bit of an experiment. I have found 2 things out.

1.) My chip is a voltage whore, why do I always get the chips that need a ton of voltage, be it a gpu or cpu.

2.) On my card, it appears as though there is a "hole" so to speak when setting the voltage from above 1.19v to 1.3v. In between here the vr's are unable to keep voltage a constant and even when gpu-z shows VDDC being in the target range in fact measuring from the gpu shows voltage at 1.03-1.18v through that range.

Now here's the kicker, as soon as voltage is set to 1.308v or above the voltage reads and holds at 80mV-100mV higher then what has been set. So when I set the voltage to 1.308v it was actually pumping 1.389v.

I was able to run Vantage at 930MHz core but it took 1.388v. I measured during each test(and yes, my legs and hands went numb).

My max temps on water running Vantage was only 54c at that voltage, holy crap, that is awesome. for every 100mv it seems to have raised my temps by 2c and for every 25MHz on the core another 1c raise. That was just with my quick experiment though, so I'm not saying over an extended period of time that's all I would see.

Now keep in mind, all the measuring I got for my volts was directly off of the gpu. Non of the voltages I referenced were from gpu-z's VDDC.

I don't know how overzealous I want to get now though as seeing how much vgpu it took me just to hit 930MHz for Vantage. I think I may just take my 915MHz core max for benching at 1.17 vgpu and let it be.

I'm too scared I might kill my card.

PS: The voltage "hole" I am referring to also, at some points would shoot the voltage up to 1.42v and above under load. Kinda scary if I do say so myself. Also, I ran Kombuster as just a quick stress test between switching voltages, Vantage was what I used as my Ultimate test so to speak. The second gpu test on Vantage(the space one) is a pretty harsh test imo and if it fails it always fails at that point.
Edited by rx7racer - 7/9/10 at 4:17pm
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post #507 of 926
caps are mandatory..you'll gain 30fps at those clocks just by capping..fluctuations in the supply current are to blame. This is why we are adding series capacitance to the input side of the voltage circuit..output is fine, only input suffers for the most part.

*there is vdroop across the mem ic's as well [from 1x end of the pcb to the other].
post #508 of 926
Ah duh, of course that makes sense. That's why it is constant due to the caps and vr's doing there job the best they can, and keeping output stable.

Ok, I gotcha now. I think lol, god I am so weak on my electronics anymore. Hence why I am trying to jump in and refresh myself.

I found some 2200uf ncc 16v off ebay from pc mc or something like that, but 4 for $4.99. Think I'll grab those then. http://cgi.ebay.com/4-Nippon-ChemiCo...#ht_2639wt_911

I think those will do.

Looks like the points should be fairly simple to apply to.
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post #509 of 926
they are easy to land.. ~750F on the iron..flow a little bit onto the pad first, then cap
post #510 of 926
Has anyone tried or had any success cooling a gtx 480 with a corsair h50? Also if thats not an option what are the best air cooled methods?
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