6800 Non Ultra, Non GT, Volt Mods??

[Kunaak]

where are the plain old 6800 128 meg, DDR1 volt mods??

I can find tons of stuff for GT's and Ultras, but nothing for plain 6800's.
VGPU and Vmem.

Pics, and Intructions please.

[Del Gro Badeu]

just here ;) : http://www.xtremesystems.org/forums/showthread.php?t=48876

i'm currently rewritting the vmod guide ( since a long time, but i have ton of work at university : / )
it will be in french in the first time but i will try to translate it during the next week ;)

[Kunaak]

I read that post, to be honest, it didn't help me, cause the entire post looks like a huge mess, and half the people aren't even talking about volt mods... so it's extremely haphazard to find any useful info in there.

I can do the mods, but I just don't see what I am suppose to do, from that post...

[Del Gro Badeu]

vmem :
http://www.kirikoo.net/images/tn/tn_forum_7Badeu-20050409-014656.jpg (http://www.kirikoo.net/images/7Badeu-20050409-014656.jpg)

vgpu :
http://www.kirikoo.net/images/tn/tn_forum_5Badeu-1-20050409-122023.jpg (http://www.kirikoo.net/images/5Badeu-1-20050409-122023.jpg)

capmod :
http://www.kirikoo.net/images/tn/tn_forum_5Badeu-2-20050409-122023.jpg (http://www.kirikoo.net/images/5Badeu-2-20050409-122023.jpg)

no explanation actually, i'm finishing the french how-to

[busta`]

Nice man. How much is safe memory voltage on a 6800? After-market air cooling.

[afireinside]

Hey kunaak, are you attempting to dethrone me? :D

Anyone have a GOOD pic of the cap mods please?

[Del Gro Badeu]

i'm making it :p

[ZeroHero]

Hey kunaak, are you attempting to dethrone me? :D

Anyone have a GOOD pic of the cap mods please?

Here is pictures for the LE, it shoudl work for the NUs too.

http://madchicken.wz.cz/6800le.htm

Have did the memmory cap mod, but it didn't help my overclocks :( , but I haven't have any blackscreen since that :) and more stable volt won't hurt either ;) . If you do the voltmod the memory I think it will help more.
The mod is easy to do too. If you get worser overclocks try to change the direction so you wil have the "-" to the TP holes insted of the "+"

Are there any pencil mod to the LE/Nu?

[Del Gro Badeu]

we haven't searched for pencil mod on the old topic, i think it's possible but i dislike this kind of mod because it's not "clean"

[ZeroHero]

we haven't searched for pencil mod on the old topic, i think it's possible but i dislike this kind of mod because it's not "clean"

okay, soldering isn't my thing, so a pencil mod would be great.

[Kunaak]

Hey kunaak, are you attempting to dethrone me? :D

Anyone have a GOOD pic of the cap mods please?

dethrone you?

do you have the record for the 128 meg 6800?
my old 6800 did 493/1290 under watercooling at 1.6 volts, scores in signature. but that card was so close to being a Ultra, that it's almost unfair to call it a 6800... if it didn't come stock at 12 pipelines that is ;)

anyways, no I am just looking for alittle extra speed from my videocard for gaming and such.
if it does nice, like 425/900 at stock, maybe I will give it a shot, but only if it mods to 16P, of course, I won't stand much of a chance with only a 4.3 ghz P4, A64's at 2.8 ghz, just destroy P4's at 3dmark2001 and 2003, so if I was gonna beat your 128 scores, I'd have to aim for 2005, and 2003 almost entirely, and hope I can get 5 ghz or so stable to beat your mobile :D

in short, it's just not worth trying to take down A64's with P4's.
a well overclock A64 is just too damn tough.

[Kunaak]

Del Gro Badeu

can you post some more information about the cap mod??

I think I understand it, just not too sure.

cap polarity + to the solder points, with the ground going to the ground of the molex?
1 cap per area, so it's a 2 cap mod??

[Del Gro Badeu]

yes it's a 2 cap mod, one for GPU and the other for memory, each + legs must be soldered to each blue points, and ground to any ground point of the board ( molex is the easiest soldering point ). After the achievement of this mod you will have clean voltages on GPU and Memory like this :

http://www.kirikoo.net/images/7Badeu-20050409-143713.jpg

[Kunaak]

sounds good.

so 3300 uf, what volt?
I have some 6.3v 3300 uf's here.
thats why I ask.

can get some 10's if I need to.
otherwise I'd have to really look around.

[Del Gro Badeu]

6.3 will be ok ;) i think you are not going to run your gfx card with more than 6.3 V for your ram or your GPU ;)

[Kunaak]

2200 UF's ok?

my 2200 UF's are rubycons.
kinda like using the good stuff, before digging into the cheap (radioshack) ones.

[Del Gro Badeu]

it will be ok, but 3000/3300 seems to be the best. On first topic about 6800 zadah have said 10 000 µF must be the maximum, bigger capacitor will result in a crash of the board.

[afireinside]

Ah I see. But yeah I have 3rd on the ORB for 6800 but its you and zakelwe ahead of me with those dual molex GDDR3 cards :stick: so I consider my self the true 6800 record holder :P

Do the caps mods really help or no?

[busta`]

Kunaak, which exact mods did you do and how much voltage did you use to get those speeds? Good job :D

Thanks

[alexio]

I need vmem mod for the Asus 6800NU, any pics?

[Del Gro Badeu]

I need vmem mod for the Asus 6800NU, any pics?

the PCB ( except for the V9999 GE ) is exactly the same on every 6800NU/6800LE board, so read the post !! all vmod has been posted now :stick:

[alexio]

the PCB ( except for the V9999 GE ) is exactly the same on every 6800NU/6800LE board, so read the post !!

Not true, I'm not stupid :confused:

[Del Gro Badeu]

the only options left to manufacturer actually is to select wich color the PCB will be and what kind of cooling will be used ; )

the only possibility remaining to have a different PCB is with a PCI E board, and PCI E board uses a volterra like GT and Ultra board

[alexio]

Whatever, be happy if you believe yourself.

[Del Gro Badeu]

post a pic ... but actually i haven't see anything else than LE/NU, GE or PCI E

[alexio]

http://www.asus.nl/products/vga/v9999td/overview.htm#

6800NU AGP

Compare it with the reference design.

Sorry for the bad pic, but I think you can see that the layout of the caps for example is very different.

Do you want any other pic? check www.asus.com

My 24/7 computer:

http://img.photobucket.com/albums/v342/AlexKok33/P2040172.jpg

:banana:

[Del Gro Badeu]

i need the back of the card ;)

[alexio]

OK I'll get it out of my pc and put it under the scanner :D , digicam sucks.

[CaTalyst.X]

Ohk guys i did an evga nvidia ref pcb vmods to 6800NU last night. I did the vmem/vgpu and i should have pics up pretty soon :D

-CaT

[alexio]

http://img.photobucket.com/albums/v342/AlexKok33/Asus.jpg

Sorry for the bad quality.

[Del Gro Badeu]

I will take a look this night ;) can you give me the IC's reference on the bottom left of the board and the little one with 8 legs near the molex ?


i admit there is an other design :banana:

[Kunaak]

Kunaak, which exact mods did you do and how much voltage did you use to get those speeds?

to get the Asus V9999GE to 494/1290 I had to watercool the videocard, and volt mod the core. thats all.

from there, it was just constant tweaking and looping of 3dmark to get it alittle more stable when I could.

to volt mod a Asus V9999GE, just use the 6800 Ultra volt mods from VR zone.

[CaTalyst.X]

The little 8 legged near the molex im almost 100% sure controls vgpu. If we could get whats written on that chip it woudl help us greatly :D

-CaT

[alexio]

PFFFFF, just put the card back in and the screen just freeses when the windows logo apears artifacting like hell, did this a few times but the same all the time.

I took the card out, removed some dust and greas (from manufactoring ?) and now it work like a charm again.

http://img.photobucket.com/albums/v342/AlexKok33/Asus2.jpg

Lucky me :D

[alexio]

If you doe the vgu mod, will that take away the stress of the mofsets and other stuff on the card ? Just upping the voltage by bios higher than 1.3v isn't a good idea because the chips to regulate the voltage and the mofsets doesn't like that on Asus 6800NU and other cards.

The most important thing for me is a vmem mod and a cap-mod for the mem, maybe a vgpu is nice too but upping the vgpu from 1.2v (1.23 in smartdoctor) to 1.3V (1.38 in smartdoctor) by bios didn't gain me much, so I think the voltage gets unstable above 1.2v also because it's overvolting at 1.3V.

[Del Gro Badeu]

I can't verify it, but ...

I think isl 6522 is used for memory voltage regulating, try to mod it by adding a VR between leg '5' and ground. Because i can't mesure anything on your board, i can't say "use a VR of XXX Ohms" but using a 100 kOhm must be sure enough ;)

to figure out where are voltages reading points and cap mod soldering points use this datasheet and try to trace back vout on your board ;)

http://www.intersil.com/data/fn/fn9030.pdf

[CaTalyst.X]

You are correct, the vmem mod can be made by soldering a 20K VR set at max between legs 5 and 7 of ISL6522CB :) As for vGPU, the RT9202 Definately controls it. Solder a VR from leg 6 to leg 3 (GND) of RT9202, lower resistance for more volts. I will post a picture and VR values in a few minutes.

-CaT

[CaTalyst.X]

Ohk guys, just follow this pic. It has everything you need to vmod ASUS V9999 :)

http://img138.exs.cx/img138/4091/asus6xc.jpg

-CaT

[CaTalyst.X]

BTW Del gro, not to step on any toes here, and u did a GREAT job diagraming these pics, but there is a better solder point for vgpu. As shown in this pic:

http://img48.exs.cx/img48/103/5badeu1200504091220235pp.jpg

That point is connected to an SMT resistor on the board. The pad pointed out in your diagram is hard to tin and solder to for n00bs compared to an SMT w/ solder already on it. Just pointing out an alternate solder point :P

-CaT

[Kunaak]

Ohk guys, just follow this pic. It has everything you need to vmod the ASUS V9999GE :)

http://img138.exs.cx/img138/4091/asus6xc.jpg

-CaT

thats nothing like modding a Asus V9999GE, unless they drastically changed recently.

a Asus V9999 GE looks exactly like a 6800 Ultra, with a row caps or something on back, like 30 of them in a line.
the mods are exactly like a 6800 Ultras.
these look like a 6800 NU.

[CaTalyst.X]

Sry i screwed up the model #

-CaT

[Del Gro Badeu]

BTW Del gro, not to step on any toes here, and u did a GREAT job diagraming these pics, but there is a better solder point for vgpu. As shown in this pic:

http://img48.exs.cx/img48/103/5badeu1200504091220235pp.jpg

That point is connected to an SMT resistor on the board. The pad pointed out in your diagram is hard to tin and solder to for n00bs compared to an SMT w/ solder already on it. Just pointing out an alternate solder point :P

-CaT

you think it's hard to done soldering job for vgpu ? cause i admit it for vmem ( the soldering area is really really really really small ) but it's an hole for vGPU so i was thinking it was easy to achieve

if you think your solder point is really easiest don't hesitate to modify pic to help people ;)

[alexio]

Ohk guys, just follow this pic. It has everything you need to vmod ASUS V9999 :)

http://img138.exs.cx/img138/4091/asus6xc.jpg

-CaT


Thank you so much, this is really helping me out.

Maybe this mod can be placed in the 6800 vmod thread in the startpost :)

If I post a pic of the caps layout can you show me how to do the capmod for the mem and gpu?
I'm really a n00b in electronics and I don't wanna screw up anything :p:

[Del Gro Badeu]

i think it will be really difficult for caps : /

if you can have a really nice pic of your board, there isn't any problem to put it at the beginning of the thread, but actually .. it's not really clean :lol: try to found a a digicam ;)

[alexio]

Ok I will, but would a few random placed caps help any?

Maybe between the point for vmodding also put some caps?

There are so many people waiting for the Asus vmod, I'll ask to place this pic in the topicstart of the thread untill I have a better picture.

[Del Gro Badeu]

the caps must be placed between Gnd and vout, not vmodding points

[alexio]

Gnd = ?
vout = the point where the core and memvoltage is 100% converted, right?

I'm a n00b, please be kind to me :D

[Del Gro Badeu]

i will be evil with you !! :D lol

Gnd is ground, and vout is where you can mesure 'true' voltage for GPU or memory, this is why voltage reading point can be capacitor's legs ... but sometime, other spots to read voltages are preferred ;)

[alexio]

Ok thanks but what should be the point to solder the ground ?, this is my last question.

[Del Gro Badeu]

this is my preferred gnd point, cause it is easy to solder on them :
http://www.kirikoo.net/images/tn/tn_forum_1Badeu-20050410-175043.jpg (http://www.kirikoo.net/images/1Badeu-20050410-175043.jpg)

[alexio]

Do I need to ground the VR's ? (I'm sorry for another question).

[Del Gro Badeu]

this is a forum, it's here for question ;)

well, if you done exactly the mod as it is explained on the pic, so you don't need to ground the VR to the molex cause they are already grounded ;)

[CaTalyst.X]

you think it's hard to done soldering job for vgpu ? cause i admit it for vmem ( the soldering area is really really really really small ) but it's an hole for vGPU so i was thinking it was easy to achieve

if you think your solder point is really easiest don't hesitate to modify pic to help people ;)

I already posted a modified version just showing the trace leading to the SMT resistor so ppl know its an option :P Either one will work fine guys.

Also: If you do the mod exactly as listed in my pic, they will be grounded already because pin 3 of RT9202 is GND and pin 7 of ISL6522CB is also a GND. I just do it like that because it looks cleaner. You can use the molex ground also if you dont like soldering to IC legs.

-CaT

[LookAS]

Hello, I`ve screwed sth up on my asus v9999 card and now I need to know what is the default resistance between pin 3 and 6 on RT9202, and between pin 5 and 7 on ISL6522CB.
thx a lot for any help :(

[makatee]

Bringing back an old thread! Anyways, I was thinking about doing these mods to an old Chaintech 6800 non ultra 128 meg that I have laying around and I was wondering what you guys thought of doing it with 10k vr's.....they are the only vr's that i have around at the moment.

[makatee]

Please can I get an answer...I;m trying to be patient but in truth I have none! ;)

[makatee]

I guess I'll ask this question once more....Can it be done with a 10k VR....sorry to beat a dead horse, I am just a bit curious.