TI4200 Volt Mod?

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10-09-2002, 01:37 AM
Goldlocke

just fried my MSI GF4TI4200 RAM

hehe. i just upped the Vmem too fast!
i went up in little steps, but the Vmem i measured stayed at 3,45V all the time!? probably i measured at the wrong cap?

now my card gives me weird colored blocks in DOS and windows - so take care! :D

now my questions:

1. lardarse, could u plz post your pics of the RIGHT caps where to measure the Vgpu and Vmem? your links are somewhat broken.
2. where did u connect the ground side of the VR to? i connected them both to the caps where i measured the 1.66V Vgpu. was that wrong?
10-09-2002, 01:43 AM
Goldlocke

1 Attachment(s)

is this the right cap for Vmem?

thx!
10-09-2002, 03:36 PM
UaZa

yes..this is the right one.
10-14-2002, 12:02 AM
sysfailur

Some pics for you goons..... :P two 5ks, set @ (20x124 - top left, and 20x104 - top right). Hope this clears things up.

http://www.maximumoc.com/img/hardwar...d/overview.jpg

http://www.maximumoc.com/img/hardwar...right_chip.jpg

http://www.maximumoc.com/img/hardwar...p_top_left.jpg

http://www.maximumoc.com/img/hardwar..._top_right.jpg
10-14-2002, 12:17 AM
Goldlocke

hehe :rolleyes:
thx, sysfailur! now i know where to measure Vmem ;)
But i have to wait for my 4200 to return from RMA (if so!)... :D
10-14-2002, 02:51 AM
aarion

is it the same for every 4200?? I'm using a MSI 4200. Which one of your guides should i follow? how to you measure the volt? Thank you.
10-14-2002, 06:17 AM
UaZa

Quote:

Originally posted by aarion
is it the same for every 4200?? I'm using a MSI 4200. Which one of your guides should i follow? how to you measure the volt? Thank you.

what is your chip?
if its SC2602S & SC1102CS thats ok
10-14-2002, 01:49 PM
sysfailur

Well my "stability testing" included running game 4, as it's the longest 3dmark bench.

I just put windows in my comp, and everything is totally fresh. After much voltage tweaking I've come to 325/695 as my highest bench-worthy OC. 330/700 didn't work... but I think it's just the core not wanting to go higher. Looks like I got a pretty shafty core :\ The voltages were 1.85v on the cpu, and the ram was 3.7v.

For now, that's as high as I'm going to go. I'm just pleased everything works! I will do more thorough benching with it when it's colder in this room and I have a fan blowing on the ramsinks. Temperature wise, the ramsinks were @ 30C, and the back of the gpu was @ 51C. Those were right after the bench was completed. But hey, 695 is pretty smokin aint it? :P
10-14-2002, 02:41 PM
sysfailur

Quote:

Originally posted by aarion
is it the same for every 4200?? I'm using a MSI 4200. Which one of your guides should i follow? how to you measure the volt? Thank you.

The two wires that come off, where I have them labeled, get a multimeter and hook it up to the wire leads. Put it on V ::: 20.
10-14-2002, 03:57 PM
sysfailur

pics: http://www.maximumoc.com/img/hardware/4200_and_kd7/
10-15-2002, 03:26 AM
aarion

sorry, i'm really noob on this v-mod thing. there are so many wires i also don't know which is which. Pls explain, thank you.
10-15-2002, 05:04 AM
aarion

and can i use a 10k variable resister?
10-15-2002, 05:10 AM
Goldlocke

aarion, yes u can. just be careful to not turn the resistance down too quickly!
10-15-2002, 05:30 AM
aarion

alright, i think i'll go back and try......
10-18-2002, 07:28 AM
Dirty_Punk

sorry, but i don't understand one thing... can i get the vgpu and vmem value with the videocard off from pc or it must be while pc working???

and in this case, can someone tell me how i must set the resistor for gpu & mem to get 1.85 & 3.5? or a formula to calculate it without measure, tnx! :)

PS: my abit do 355/670 with a wb gpu 3° water and no mods yet.. trying to get at least 370/700 with 80w pelt and 3° water & voltmod, and it's an A2 core!!!! :eek:
10-18-2002, 07:35 AM
N8

Dirty_Punk,

I can answer the first part of your question thanks to DDTUNG.
Yes, the card needs to be in the PC and the PC needs to be running to measure the voltages. Just be careful when probing ur meter around in your case while the PC is runnin ;)
10-18-2002, 07:51 AM
Dirty_Punk

i have measured them, it's easyer than i'd thinked :D

but there is a little problem... if i'm not vrong the default voltages is ~ 1.65/2.8 for gpu/mem... i have 1.65/3.31!!!! my mem is overvolted by defautl?!?!?!? :confused:
10-18-2002, 08:16 AM
spaceboy

no 3.31 è corretto
10-18-2002, 08:59 AM
Dirty_Punk

Quote:

Originally posted by spaceboy
no 3.31 è corretto

pfiuu!! :D :D

so from 3.31 to 3.5-6 is the max for safe voltage??? isn't it a low overvolt?!?
and the gpu, max to 1.9?? with 80w pelt and 3° water can i raise it to 2v?? (only for test howether ;) )
10-18-2002, 05:09 PM
sysfailur

Quote:

Originally posted by Dirty_Punk
pfiuu!! :D :D

so from 3.31 to 3.5-6 is the max for safe voltage??? isn't it a low overvolt?!?
and the gpu, max to 1.9?? with 80w pelt and 3° water can i raise it to 2v?? (only for test howether ;) )

I've done 1.92 on the gpu w/ aircooling, and 3.93~ on the ram w/ air (on 4ns ram).
10-18-2002, 05:43 PM
sysfailur

Quote:

Originally posted by aarion
sorry, i'm really noob on this v-mod thing. there are so many wires i also don't know which is which. Pls explain, thank you.

This should clear everything up. (I'm going to add this image to my first post as well so people won't have to search through the thread.)

http://www.maximumoc.com/img/hardwar...t_mod_info.jpg
10-21-2002, 12:22 AM
aarion

i got one big problem, my ram are damn hot. Just normal o/c to 600. Even with ramsink. The ramsink is hot to be touch. Can someone help me here?
10-21-2002, 12:22 AM
aarion

i got one big problem, my ram are damn hot. Just normal o/c to 600. Even with ramsink. The ramsink is hot to be touch. Can someone help me here?
10-21-2002, 10:16 AM
AeroBrain

So is there any way to mod these cards so they take power from a different source other than the AGP port of the motherboard? Seems like they (or even the rest of the motherboard components) could be more stable... well in the depth of abyss I like to think is my mind it sounds like it would be more stable.
3DFX did this on their Voodoo5 (5500 model anyway) series with a connector on the card to connect one of the 4-pin molex connectors from the PSU to it. Not to mention what would have been the Voodoo 6000 model if they stayed in business was supposed to have its own external power supply to plug directly into video card.

I need to go to college and take some electronic engineering courses I think... I'm really interested in things like this, but find roadblocks with time management. All my time just goes to surfing forumns at work, or playing games at home. Just no time to teach myself these things.
:D
10-21-2002, 02:35 PM
sysfailur

Quote:

Originally posted by AeroBrain
So is there any way to mod these cards so they take power from a different source other than the AGP port of the motherboard? Seems like they (or even the rest of the motherboard components) could be more stable... well in the depth of abyss I like to think is my mind it sounds like it would be more stable.
3DFX did this on their Voodoo5 (5500 model anyway) series with a connector on the card to connect one of the 4-pin molex connectors from the PSU to it. Not to mention what would have been the Voodoo 6000 model if they stayed in business was supposed to have its own external power supply to plug directly into video card.

I need to go to college and take some electronic engineering courses I think... I'm really interested in things like this, but find roadblocks with time management. All my time just goes to surfing forumns at work, or playing games at home. Just no time to teach myself these things.
:D

Well, I'm sure someone, like DDTUNG will correc me if I'm wrong, but there is plenty of voltage going through the agp port. When you change the resistances between two things you just allow more voltage of the voltage supplied to be used.

And aarion, I recommend you get yourself some fan cooling on your ramsinks... perhaps use largers ramsinks as well! My ramsinks rarely get hot at all... even @ 733mhz @ close to 4.0v. ;)

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