all vmod for all 6800

[kryptobs2000]

If you penciled it and it worked, it probably just connected the bridge, the cap probably wasn't important anyways, but I don't know too much about eh.... this kinda stuff.

[stealthbomber]

woah interesting. thanks for the reply Zadah. I have replaced it with similar component and the only way i could get it to work was buy penciling it some. value is not specific here>?
Card is working great btw other than the memory seems really handicapped
now.

Good information btw, learn more every day

The rails on that 430w Antec may be holding it back, in my case the vdd volt mod only worked after I added the extra cap.

[Jethro]

im running a pretty light load on the machine really. down to 1 hard drive,1 opti and only 2 fans. Plus the PSU is modded so i dont think im running weak i think i just fried the ram to be honest lol. I have 2 caps on the card now also.

no worries at least the card is running. ive had pretty good success with vmods and cooling in the past 1 bad go at it is ok. Worlds of Warcraft doesnt strain the card much at all anyhow

[Tekdemon]

I've been looking through this thread and wonder if it's possible to make a daughter-card type board with all the neccessary caps and power regulation chips on it?

Where would the solder points be if you wanted to add more power regulation and a second molex onto a 6800NU?

Also, did anybody put the "missing" cap back on and find out if that did anything good?

[Del Gro Badeu]

i personnaly use a daugter-card to solder all my caps and VRs the result looks like better :p
for the missing cap, nobody has tried at this moment ...
and for the extra molex, it's look like to be not recommended for a 6800 NU

[kryptobs2000]

i personnaly use a daugter-card to solder all my caps and VRs the result looks like better :p
for the missing cap, nobody has tried at this moment ...
and for the extra molex, it's look like to be not recommended for a 6800 NU

If you were to add the extra mosfets I think it would take the strain away from the cards, and then you could add the extra molex right?

[Del Gro Badeu]

maybe ..., but if i remember past post about this, the problem came from the PWN not from the mosfets :/

[Nosfer@tu]

Before the mod max 400 on the core before artifacts and/or freezes, after the mod 436 on the core before freezes [ no artifacts ].
The freezes comes from FW.

This mod should be used in conjunction with the famous Bios V-mod [ 1.4V or 1.5V ] for best result.

The circuit isn't perfect, but it is functional.

*Warning, the mod is not fully tested yet

http://service.futuremark.com/compare?2k3=3588506

Has Anybody thried the 6800GT molex mod yet?

[kryptobs2000]

Has Anybody thried the 6800GT molex mod yet?

I'm working on it, got most of everything done, just waiting for my 6800 GT to get back from being rma'd. Kinda confusing for me to follow that diagram or w/e it's called, so I gotta keep looking back at the pictures to see whats going on I'll post with pics when it's done tho.

[Del Gro Badeu]

i've just obtained a GF 4 Ti 4200 ... will test some torture mods on it an extra molex is one of them :p

[Nosfer@tu]

I to have a Spare Gfx now. A Creative G2ti for backup if i my leadtek 6800 Nu up!

With a window open I breached the bloddy 425 Mhz for the first time ever and accualy benched at 435 mhz core, This is only with wather cooling and Vbios mod.

Went to town today and bougth the following :

capacitor

Jamicon 4700uF 25V (105 C°)
SME 4700uF 25V (85 C°)
And a Phillips 1500uM 25 V (made an error :p)

25 Volt would force the card to use more Amps Yes ??? So thats is noot optimal???

2 SMD grabbers, Migth save me som

2 x Sunon 40 x 40 mm DC5 0.5 W fans.

Alsow I spoke to One of my teachers about the 12 V molex mod, He claims that it is posibel to do on anny card, the card would just not "Eat"/Juse the ekstra Volt if it doesent need it. Migth have to Change som Other stuff on the card to make it runn with it, but noot sure before we take som more time locking at it.

He alsow said that there would be volt stability to gain by changing the original capacitor of the card to some more expensive one´s.

But that to will need some investigation to

+When I Speak to my OC freind I wil poste som pictures of where to Glue profiles on the card. I belive it is some of the clock gens on the back op the card that needs cooling, It gave him 15-20 Mhz ekstra on core. hes running his Pov 6800 Nu at 325@430 Mhz with bios Vmod.

I belive I got every thing here

Ahhh BTW on page 1 it is recomended to juse 10 Volt capacitor. But I was informed that it migth blow if it geets anything above 10 Volt, And as fare as i Know they recive 12 Volt? Or am I mistaking here????

Regards Nosfer@tu of Denmark :p

[kryptobs2000]

No, they arn't recieving 12v, they are only recieving probably about 1.4v or w/e the core voltage is, this just comes from the 12v line (or is it 5v even?).

Wish I had cool teachers like that

[Nosfer@tu]

cant someone measure it?

As far as I understand it will pull more Amps because of the higher Volt capacitor. And there for you cant use as High an µF capacitor????

Just my basic knowledge, But I migth be Wrong??

[stealthbomber]

No, the capacitor voltage rating is only the max voltage it can handle, it makes no difference if you use a 10v 2200uF cap or a 25v 2200uF cap in terms of how much amp the device is pulling, the voltage draw will still be the same.

[Nosfer@tu]

No, the capacitor voltage rating is only the max voltage it can handle, it makes no difference if you use a 10v 2200uF cap or a 25v 2200uF cap in terms of how much amp the device is pulling, the voltage draw will still be the same.

Tigth

Does anybody know if it is posibel to colder the core capacitor RIGTH back on the core, It should give better stability Im told?

[money2]

If you want to improve your memories overclock capabilties, you should add extra capasitor between GND an TP1 this gives major performance boost to DDR, because Cards own capasitor is too weak... i personally used 3300 uF 10 V capasitor and i was able to overclock my memory to 1010 Mhz on 2,82 V
Without that cap you get hungs an black screens....

And if you want to measure core voltage it is TP11

------------
hi, i am new and from germany... so excuse my english plz ;-)

so some time ago i bought a msi nx6800le TD128

i hade those black screens every time running at standard 300/700
if i underclock the mem to 501 its running fine.
so i decided to do the capaciator mod with the mem...
result: same as before... blackscreens in every game running at 300/700 or more.

------------

now i want to add an extra capaciator for the core voltage...
the question is:

IS it the TP11 Contact at my MSI card, too??

and: I changed my Vcore in graphic card Bios to 1.2V... is that a problem or should i set it back to std if i make the core Voltage mod??

greetings from munich

money

[Bilabong]

I had the same Blackscreen "feature" with my piece-of-crap Gainward 6800LE. Indeed the cap mod alone didnt fix the problem however, in addition to the cap mod i undervolted the memory to 2.66V and it works fine. I also fitted a cap to the GPU rail and fitted heatsinks to the mosfets and ISL voltage control chip.

I recommend that you lower the RAM voltage to around 2.6V to fix the problem. My card is now stable at 300:700 in all the games i have tested.

Bila

[money2]

sounds good. with witch tool can i do this undervolting?!
atm i installed riva tuner nibitor and nvflash...

[money2]

I had the same Blackscreen "feature" with my piece-of-crap Gainward 6800LE. Indeed the cap mod alone didnt fix the problem however, in addition to the cap mod i undervolted the memory to 2.66V and it works fine. I also fitted a cap to the GPU rail and fitted heatsinks to the mosfets and ISL voltage control chip.

I recommend that you lower the RAM voltage to around 2.6V to fix the problem. My card is now stable at 300:700 in all the games i have tested.

Bila

please, i need help...
how can i do this undervolting ??!

I doubt that it works with software - but if there is any software with which i can do this please tell me the name...

And if it is a hardware mod so please tell me what to do to undervolt this card (MSI NX6800LE TD-128)

thx money

[Del Gro Badeu]

i've just finished all 6800's mod
now i'm waiting for a proper cooling ...

[Bilabong]

To undervolt the RAM you need to solder a 100K Variable resistor between the feedback pin for memory (red bit on the first page if i remember right) and the 5V on the molex.

MAKE SURE THE VR is set to 100K or you will cook the card!

This will lower the memory voltage a little. On my card with a 100K variable resistor at 100K it drops Vmem to 2.66V. Without this mod i get the blackscreen "feature" sometimes at 300:700, with it i never get a blackscreen.
If i raise the Vmem even a little i get a blackscreen on bootup.

I have no idea why it works, but it does on my card. AFAIK the Hynix is a 2.8V chip, and 2.66V is at the bottom end of its tolerance... i can only assume that its a querky batch of chips?

Bila
BTW i also have the cap mods and mosfet heatsinks.

[Nosfer@tu]

I find it very freaky that you solve the problem by undervolting your ram.

Del Gro Badeu I have just send you a PM, Please reply

[money2]

To undervolt the RAM you need to solder a 100K Variable resistor between the feedback pin for memory (red bit on the first page if i remember right) and the 5V on the molex.

MAKE SURE THE VR is set to 100K or you will cook the card!

This will lower the memory voltage a little. On my card with a 100K variable resistor at 100K it drops Vmem to 2.66V. Without this mod i get the blackscreen "feature" sometimes at 300:700, with it i never get a blackscreen.
If i raise the Vmem even a little i get a blackscreen on bootup.

I have no idea why it works, but it does on my card. AFAIK the Hynix is a 2.8V chip, and 2.66V is at the bottom end of its tolerance... i can only assume that its a querky batch of chips?

Bila
BTW i also have the cap mods and mosfet heatsinks.

-------------

i never heard "variable" resistor...
perhaps u can find out the right resistor for me, here:

conrad electronic market

i would be proud, if u could do this for me...

just post the link to the right one...

thank u all!

greetings money

[Del Gro Badeu]

I find it very freaky that you solve the problem by undervolting your ram.

Del Gro Badeu I have just send you a PM, Please reply

chek your PM

[Nosfer@tu]

-------------

i never heard "variable" resistor...
perhaps u can find out the right resistor for me, here:

conrad electronic market

i would be proud, if u could do this for me...

just post the link to the right one...

thank u all!


greetings money

There. Just take the 100 K variabel regulator

http://www1.uk.conrad.com/scripts/wg...ad_area=241660