Preparation


A DFI nF4 Ultra board that can be modded (old version).
Below is the Nfore4 ultra chip that is harder to be modded (the bridges were covered by epoxy). The epoxy has to be removed first before short circuit those bridges.
Picture


A CAIG circuitwriter pen (12.99USD). CAIG


NForce 4 Ultra chip was detected before the modding.

progress


Use the circuitwriter pen to short circuit that two solder points in yellow rectangular. After that let it dry for few minutes. Then use a digital multimeter and test its resistance. If it is short circuit well then some small resistance will be there.



Result


NForce 4 SLi chip was detected after the modding.


In the BIOS, SLi function is viewable and SLi can be enabled.

Benchmarks (overclocked)


3DMark03


3DMark05

this board required to mod in order to SLi??

basically only nf4 SLi chip can run in SLi mode.
that board is using nf4 ultra D chip, so it cannot run in SLi mode even you put two cards on it.

hey.. ray
last time u said the review mobo is rev 2 so that cant be mod..
y this time can mod lau???

no la... where got said? i got said I'll mod it soon...
have to check the chipset ...
if the bridges were covered by epoxy then harder to mod it..
coz have to clean it ..

so now ..
u got DFI SLi mobo oledi..
congrat loo..

can say like tat lo..

* BTW, anyone is taking to mod ur ultra-d to sli, come to cyberjaya and find me ..

hey ray..
last time DFI claimed that latest ultra-D ( or rev 2 ) will be hard moded by DFI so that we cant mod it to SLi..

so how worr...

if mod ady KO ady...still come and find u?
lol

the best way is open up the chipset cooler and see ..
if not epoxy then easy only..
dun care about the rev ...

hahah...
cantik nya.....
cos im oso waiting my pc to rosak..
if "HE" suddenly rosak.. then hahaha...
DFI Ultra-D will be my first choice...

but expensive juga...
mobo + cpu + PCIe GC == RM2000

why wait till rosak... sell off before rosak and buy a new system la hehhee

barang guna lama oledi..
ada perasaan one..
now my pc still performace very well wat..

lolz u remind me of my ownself also...
many things i dont wanna let go coz of sentimental value LOL

but those new boards are mostly covered by epoxy ..
it will be hard for you to mod it ..

lolz...
then boring oledi...
latest Ultra-D mobo cant be mod == SIANNZZZZzzzzz.....
Ultra-D == RM600++
SLi == RM 900++

lolzz....
if not can jimat approv RM300++ looo

well u might be able to still mod it...
get a miniature file and file down the epoxy until the metal contacts are exposed. but that will definately void ur warranty.

try to dig the pic of new nForce4 chipset..
but no result ....

i js wanna hav a view on the latest (most) nForce4 chipset which is covered by epoxy

ray, u didnt connect the SATA II???

the board doesnot come with sata 2 ports..
so even i connect them, it is useless..

3dmark 03 & 05 benchmark results posted

Not bad, but I read somewhere that a modded Ultra chipset will have slightly lower performance of a standard SLI chipset.

overclocked results posted

A CAIG circuitwriter pen (12.99USD)

Wow, this pen does wonders. Look at that price <---- RM60 for a pen. ray my friend just got himself Ultra-D, perhaps if he wants such mod, I will be hunting for you and that pen. XD

just ask him come to cyberjaya and find me but make sure that board dont have the epoxy ..
i just helped Westley modded his ultra D also and successfull too

more results were added ..
it seems that the modded DFI nf4 Ultra D doesn't have much different with other real SLi board ..

The results are great.....
Btw, try enabling SATA-II through the chipset.

tested this modded DFI nF4 D with 77.77Nvidia VGA driver ..
it is working well... so what Nvidia told before that with the BIOS newer than 71.89, the modded DFI nF4 D can't run the SLi ..
:X

ask a noob question:
IF in SLI mode oh, can the cards be overclock?

Sure...

Erm... Ultra chip doesn't supports SLI.. but how come got two PCIe slots there? Hmm.. mesa still noob~

yes... sure can ...
but a bit lower than a single card ....

because designing a model will be cheaper than 2 models
so dfi make the design same for the ultra chip and sli chip ....
and maybe they found that the ultra chip can be modded to sli easily la...

Oh.. so baiscally they used the same layout and stuffs but use a different chipset.. which they found out to be moddable easily into Ultra? Woa.. that's kinda.. oxymoronical.. but hey I like their idea...
Thanks for the info.~

Uh?
what does it mean eh?

SLi is something like dual channel memory, dual core CPU
so will be harder to overclock two cards than one card..
got it ?

the mod is fine...
but, dunno what happens to my ram slot...
incompatible wif lot's of ram...

will post up 3dmark soon...
when colorful 6600gt arrive

hynix ram got some issue..
but so far TCCD and UTT are ok .. but need some tweaking to make to stable and overclock well

using default setting for all...

My ultra board chipset has two epoxy on it, so if I'm able to clean, there will be no problem of modding, am I right?

I'm not sure if you can easily clean it. The best way is to scrap it off (blade), without damaging the chipset.

But it will surely void your warranty.....

Is there no other way around to clean the epoxy?
use the blade....huhuhu...hard enough for my baby...
I've tried using the pencil trick but it fails.

Maybe you can try heating it with a hot-air gun..... but not until too hot la.. might melt your chipset at the same time

You can also try using some strong alchol and scrap it off with a screw driver or metal ruler.

Or use a solder gun to heat it up..

wanna ask, apa itu epoxy? ^^;

Epoxy is similar to thermal paste, but it is a lot stickier!