9800GX2 voltmods thread

[cdawall]

TPU has some high res shots of the 9800GX2 up thought i would post them here to see what all of you could come up with







and heres how to take apart the card

http://www.techpowerup.com/reviews/Z...800_GX2/4.html

[scottc19]

It it official which water works will work?

[Fujimitsu]

It it official which water works will work?

Koolance already has a garbage aluminum block made. Dangerden and EK i believe are in the process of designing FC blocks as well.

EDIT: It was innovatek, not Koolance. Sorry for the mistake.

[BenchZowner]

Innovatek ( sigh ) has their... beep... released as well.

[Origin_Unknown]

i wonder if you could mount 2* HR-03-Plus's over the back of each pcb?

[fornowagain]

http://www.vr-zone.com/articles/Prel...ns/5651-2.html
http://sg.vr-zone.com/articles/Preli...ions/5651.html

Preliminary Voltage Modifications: NVIDIA 9800GX2 Voltage Modifications
Memory Voltage Modifications
NVIDIA 9800GX2 VGPU Modification

[jason4207]

Anybody know if these all use Samsung memory?

[T_M]

My vGPU/MEM mods.
Spot the wire that fell off :P

[aussie-revhead]

Hi T_M and guys , how well does your gx2 clock without mods and with mods ? Im going to get a single gx2 for my maximus Formula and will have it water cooled when the blocks become available .

[cowie]

T M did you try this mod on air?probly not but was wondering if ok to use with just stock air cooler?i dont want the card to breath to much heat.
anyone with the mod on stock air? results?

@aussie 760 ish 1900 ish and 1140 ish is the avg i'v seen around
mine does 790/1960/1140 for benches

[aussie-revhead]

Cool , so these cards are more like a pair of 8800GTS 512 than 9800gtx right (in clocks and performance) ?

cowie - what does yours bench like ?

[cowie]

it benches just like my pair of 512 gts

i geuss i'll do the mod on stock cooling and report back

[aussie-revhead]

So this is SLI for non-SLI motherboards , right ? Nvidias way of getting into the Intel powered motherboard sector ? Perfect partner for my Maximus Formula .

[harleybro]

T M did you try this mod on air?probly not but was wondering if ok to use with just stock air cooler?i dont want the card to breath to much heat.
anyone with the mod on stock air? results?

Sorry for jumping in but I had tried it with stock air and cold air at that. I only tried up to 1.15 from the stock 1.375 and saw no improvement over stock. Cooling is what really helps these cards.

[aussie-revhead]

Is that why Kingpins card clocks so high without mods ?

I only tried up to 1.15 from the stock 1.375

Is that meant to be the other way around ?

[cowie]

Sorry for jumping in but I had tried it with stock air and cold air at that. I only tried up to 1.15 from the stock 1.375 and saw no improvement over stock. Cooling is what really helps these cards.

thanks your just the man i would hope to have answer.
(i was going to ask in your o/c thread but did not know if you wanted to field questions)
thats what i was thinking,because the colder i get it the more higher and stable clocks i can bench at.....was it good for at least 850 and 2200 or higher shaders?

[harleybro]

Is that why Kingpins card clocks so high without mods ?



Is that meant to be the other way around ?

Haha yeah made a mistake 1.1375 for stock and tried to 1.15 but saw no improvement. I have heard and seen water benched to I think 860. I personally run dry ice at 9oo-915 and between 1.3-1.35 vgpu.

[NightRaven]

well i've got some data to share with u guys this is for 3dmark06 aye.

-40 degrees cel ln2 tek9 4.0

w.o mods: 800/2250/1150
w. mods: 920/linked (haven rammed it since i ran out of ln2)/1200
1.35Vgpu and 2.35Vmem

@harleybro dosent ur card get the cold throttle issue with dice? since its probably at -60 to -70?

PS. a tip for the guys modding this card. use a sharp screwdriver or something to scrape a little off the pad u wanna solder. there's something like a protective laquer that prevents solder from biting easily. this is for my card at least

[aussie-revhead]

Thanks Raven , I want to get one of these and will vmod it on water with maybe a little bit of dice chilling happening too . Im watching everyones results keenly.

[SIOUX]

here are some other mods for the cards, but on the same circuit with measurements on the backside. These are Vince´s shots, but i am sure he dont mind sharing this

[harleybro]

Nightraven: I cheat out the cold bug by using only dice. No acetone is added. If I use acetone then I do get the cold bug.

On a side note can anyone figure out the OVP mod on these?

[NightRaven]

here are some other mods for the cards, but on the same circuit with measurements on the backside. These are Vince´s shots, but i am sure he dont mind sharing this

oh man thanks bro for this!

i lost one vgpu mod and one vmem mod on the inside. u know how hard it is just to get it to bite! vmem mod is fine since it's easy to reach but the vgpu.. whoa... thanks bro!

[NightRaven]

Nightraven: I cheat out the cold bug by using only dice. No acetone is added. If I use acetone then I do get the cold bug.

On a side note can anyone figure out the OVP mod on these?

no wonder!!!! haha i see good idea also huh!

hmm i think ocp would be the first thing we should be concerned about? since the screen dosent blank out till about 1.5v on idle. but the moment it hits load, black screen... thats ocp yea?

[harleybro]

no wonder!!!! haha i see good idea also huh!

hmm i think ocp would be the first thing we should be concerned about? since the screen dosent blank out till about 1.5v on idle. but the moment it hits load, black screen... thats ocp yea?

You got a 1.5 card? Is it leadtek? I know most are able to use only 1.35 including myself.

[T_M]

That probably explains all the problems i had trying to run 1.4V on Gigabyte... it idled fine but loading up '06 would kill the system.