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[Chiller]

i found it allready, it's the same layout as the uP1609 Dual phase buck controller of Power Intellect company : http://www.upi-semi.com/product/Prod...spx?ArchID=140

i did give my info i made to Wes and he tested pin 13 to ground with 10-20k trimmer (after measure of resistor) and voltage increases.

I did the theoretic part and Wesjudabumb did the testing at home, because he has the vga allready in house, and it worked,



So we found it allready but still many thanks for the help 0skill but you're to late

Look at the pics in that topic : http://nl.hardware.info/forum/thread...tips-en-trucks

[wesjuhdabomb]

Still thanks for the explaination 0skill, might be usefull for future purposes . Also thanks to chiller for helping me out

[Chiller]

You're welcome, and get me a vga 6670 asap for the competition Wes hahahaha,
i'm waiting for it.

[Chiller]

I take the untouchy of gtx285 and putted it on Evga 8800GT 512mb.

it boots, get no error on mobo, mobo boots fine, normal startup codes, but get grey screen on 8800GT.

do i miss something ? Used only Vgpu, mem is stock.
Vga was 2 phase, but i used the middle not in use Phase also where was no choke.

Here is pic of stock vga :

http://kingpincooling.com/forum/show...?t=956&page=12

I did this :

http://i41.tinypic.com/inhno0.jpg

Here are pic of soldering :

http://i44.tinypic.com/vy4kr5.jpg
http://i44.tinypic.com/2n9dhqo.jpg
http://i43.tinypic.com/105scgn.jpg
http://i39.tinypic.com/6gk0mt.jpg
http://i43.tinypic.com/14mthkl.jpg

If i boot it with or without caps 2.5v then i get 1.2Vgpu like it should, so i'm missing something i think.

I hear the windows sound and all that pc boots in windows, but just grey image lol

[Chiller]

added big GROUND lead :

http://i43.tinypic.com/2cqk8ie.jpg

And added some 2.5v 820uF caps on the back, as you can see i take voltage read from pcb, not Untouchables :

http://i40.tinypic.com/30d7x2o.jpg

Strange thing is that he boots and all, hear the sound of windows, but just grey image.
voltage read from pcb is almost the same as Untouchy by difference of 0.01v, change voltage on UT voltage change nicely to on pcb.

But grey image?

[TiN]

photo of grey image screen? Maybe just your videocard is zorched.

[Chiller]

i first used Vmods on mem and gpu and Oced not so bad, but got big drop on voltages.
so with UT now, but strange grey image, will take pic

But all the mods i did are good no?

here's screenshot of image on screen :

[jacsonschenckel]

Our 8800 GT had similar problem
We put only the core zombie for the first time we had artifacts
I thought about leaving the two sources sending power to the core and test the result
would increase the tension of zombie just to run benchmark
I have not had time to test it yet, I need another 8800 GT
I think maybe it needs its own source close to the core, Kind of like a reference

[Chiller]

the stock PWM is disabled, only the MEM PWM is working.

Could use the MEM VRM of Untouchy also, but to relocate the untouchy again.

the untouchy is close to the points if you look and used 16mm² pure copper wire and caps LESR.
Is also a Evga 8800GTS 320 on the way to me for UT mounting and benching.

But first a benelux contest with a 6670 where i'm going to mount it on to

[TiN]

seems bad card, or memory voltage too off from stock..