Complete HD4870X2 vmod and biosflash.

[Riska]

Hi i am just done with modding a HD4870X2 gfx for my mate Mathis77 and i tought i would do a little guide so here it comes.
First of the 2 Vgpu mods.
Here is the solderpad on the back of the card for the gpu at the rear of the card.


And here is my own discovery the solderpad for the other gpu in front of the card on the back i dont think that others have found it and that is because it is hidden under the laquer on the print abd you have to scratch the laquer of whit a razorblade to get to the solderpad.


Now we just have to solder some wires to the 2 solderpoints so here we are first the gpumod for the gpu at the back of the card.




And then the gpumod for the gpu at the front of the card.




And now to solder two 50 Ohms multiturns vrs on the card.




Here is the Vgpu measurring spots for both gpumods


When this is done we will flash the card with the asus top bios so we can clock the card a little further than normal.

First you have the get som files on the Inet.

http://frip.dk/riget/asus0.rar

http://frip.dk/riget/asus1.rar

The 2 Asus top bios With 900mhz core and 1000mhz mem in CCC and 790/915mhz default 3D clocks


http://www.techpowerup.com/downloads...lash_3.60.html

Atiflash for flashing the card in dos


http://dlsvr04.asus.com/pub/ASUS/vga...martDoc524.zip

Asus smartdoctor for controlling the fan and oc the card if u dont like the ATI CCC and i you want you ca use Amdgputool but then you have to set the fan after you have ocet the card

http://www.techpowerup.com/downloads/330/.html

HP tool to make your usb stick bootable

http://www.techpowerup.com/articles/...s/USBImage.zip

Boot image files for the usb stick

And a guide to flash the card

http://www.techpowerup.com/articles/...g/vidcard/34/5

atiflash -f -p 0 asus0.bin
atiflash -f -p 1 asus1.bin
what to write in atiflash to flash the card
Enjoy

"Edit" this asus bios has a more aggressive fan profile than the normal
HD4870X2

[Hazzan]

Nice guide.....I will try on my card soon....

[T_M]

Very nice find on the hidden pad

[Nosfer@tu]

Very nice find on the hidden pad

he is VERY SNEAKY

I though I was pretty good at soldering.
Then I meet Riska at a OCTeamDenmark bench weekend

The guy even forced his Shuttel to run 4.2 Quard core 24/7

great work Riska and cool to share with XS

[Riska]

Thanks my mate

[T_M]

Last night i removed one of my pin #9 mods, and attempted the scratch and solder pad method.

FAIL

After carefully scratching/chipping away the surface using a scalpel, i tried to apply a ball of solder but it would not grab at all.
So i gave it some more scratching and tried again - nothing.
Cleaned over the area using a cotton tip and acetone, which seemed to do the trick a bit because after i was able to get a small solder ball to stick - but it promptly fell off when soldering on the wire.
From then on no matter what i tried i could not get solder to stick onto the "pad" again - which was becoming more and more a scratched up mess as i tried over and over.

In the end i gave up and soldered back onto pin #9 and the card is back up and running.
My advice - dont asume the scratch and solder method is easy.

[dinos22]

oh man that suxorz

[Riska]

I have now made 4 cards and i have no problem with the solderpad i just scratch the laqer away and solder on to the solderpad

[Nosfer@tu]

Maybe you scratched to much T_M ?

[T_M]

well i scratched very little to start with, and even until the end had a tiny ring of copper exposed.

[spl]

hi
my compliments
this mod is really easy!!!
i can not downoal the smartdoctor because is very slowly is possible thdifferent link???? I don't succeed in finding online it!!
I have to find the way of climbing in c.f. by software since if flash the bios to 960 becomes unstable while if I climb with gpuclock is stable to 960, strange truth?
with single card ok but with vista and the c.f. how do I do to lift the clock to everybody 4 the cores??
you excuse the bad English

[Riska]

I will upload it later tonight ´with more bandwidth

[Pyr0]

this link for asus smartdoctor should work
http://dlcdnet.asus.com/pub/ASUS/vga...martDoc524.zip

[spl]

thanks Pyr0
but not working with vista and c.f. !!!

[T_M]

[Gautam]

Yum.

[gprhellas]

hello friend

i think you must change this 0 to 1

[Riska]

Thanks alot mate it is now fixed

[G H Z]

Hi Riska

[Viss]

Back to red pcb

[T_M]

No readpoints installed before you sprayed?

[G H Z]

I can read them, just use a different method.

[spl]

thanks riska for the fast vmod!!
940mhz stable on water to 1.41 in c.f.
now is the time for the cascade!!

[dinos22]

maaaaaan you're killing me with your GT2/GT3
how do you set it up dude. put me out of my misery

[Joe Camel]

.





first a little practice



















then the real thing
















update / edit:



mod(s) work, read points done too

but any time i go > ~1.3V** on either core, screen goes off and wont come back on till < or = ~1.3V** (reboot doesn't help)


am i missing something?




** 1.315v on "front" core, 1.288v on "rear"


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