8800GT voltage mods

[Spideroz]

Hi guys, i just realised some bench on crysis with differents frequencies for the 8800 Gt, you could be interest by that.

Bench Crysis

-E4300@3.53Ghz
-2*1Go G.skill Pc 6400
-8800Gt Vmod Gpu : 1.39V ( full)
-Drivers forceware 169.09 set on high performance
-Windows Xp sp2 DX 9.0C
- 1280*1024 all details on high

[Hazaro]

Fantastic, I'm gonna do some CPU tests when I mod my card to see if my E6600 holds me back at 1600x1200 later.

Thanks for all the info.

[largon]

I heard tuning VR while system is running isn't that good, so this was wrong then.
could you confirm me that moving vgpu progressively from stock to 1.35V for example (for a 8800 GT), system running, is fully ok?

I assure you, it's perfectly safe to tune the VR (=voltage) when powered on. I've always done that and never have I busted anything because of vmods.

[Spideroz]

Yep, me too, i always tune the Vr when the system is on, i never had any problems with that, and it's so practical .

[96redformula]

I am going to wait until the reviews on the new G92 8800GTS comes out, and if it is that much stronger I will go that route.

If not, Voltmod here I come .

[winbond]

Did anyone get rid of the black screens by putting a heatsink on the #1 SPOT or any other way?

[Hazaro]

Did anyone get rid of the black screens by putting a heatsink on the #1 SPOT or any other way?

Should help if temperature is the culprit...

[Pacha]

Hi guys, i just realised some bench on crysis with differents frequencies for the 8800 Gt, you could be interest by that.

Bench Crysis

-E4300@3.53Ghz
-2*1Go G.skill Pc 6400
-8800Gt Vmod Gpu : 1.39V ( full)
-Drivers forceware 169.09 set on high performance
-Windows Xp sp2 DX 9.0C
- 1280*1024 all details on high

woa I didn't expected results to be so bad with 1280 full settings AA 4X it's horrible!! I thought it may be playable at 1280*960 full AA AF max settings, something like 20 fps I supposed. I just thought it was impossible for 1600*1200 and above but not for 1280, indeed it's merely unplayable way before putting everything to the max

merci pour les résultats. est ce que c'est fluide à 15-20 fps ou ça rame à mort? l'impression dépend des jeux et j'ai pas encore testé la démo ni le jeu final.

[r4st4m4n]

merci pour les résultats. est ce que c'est fluide à 15-20 fps ou ça rame à mort? l'impression dépend des jeux et j'ai pas encore testé la démo ni le jeu final.

15-20 c'est pas fluide, faut plutot compter dans les 20-25. But BTW, why not talking english ? I guess more people could answer you

[Spideroz]

@ Pacha
Between 15 and 20 fps, in my opinion the game is lagging.
between 25 and 30 Fps, it's much better, you can begin to enjoy the game

[Pacha]

thanks

[Hazaro]

For Crysis anyway...

I got my goodies...
Will attempt mod after I beat Crysis (Core level now)
Click for bigger:

[kriminal]

Anyone has a link to get a multimeter, 1k VR, soldering iron and solder online?

Got crashed on my bike, right now I'm on foot and bus and radioshack is too far

edit
Are these good enough for the vgpu?
http://www.radioshack.com/product/in...ductId=2062728 iron

http://www.radioshack.com/product/in...ductId=2062307 1kohm

http://www.radioshack.com/product/in...ductId=2062719 solder

Using IDE cables

[uwackme]

Digikey is the best place to get these parts. Radioshacks selection is limited.

Also, never use anything but 30ga Kynar rework wire for mods like this. Anything else will be too large and difficult to do a quality job with.

Best soldering iron is a weller EC3001, with 30ga or 34ga solder.

[eclypse]

Known where to find a weller EC3001?? Did a few searches for it and find nothing. Is there a newer replacement model?

[kriminal]

Digikey is the best place to get these parts. Radioshacks selection is limited.

Also, never use anything but 30ga Kynar rework wire for mods like this. Anything else will be too large and difficult to do a quality job with.

Best soldering iron is a weller EC3001, with 30ga or 34ga solder.

Thanks

btw is that the correct model for the soldering iron? not even google pulled it up

[uwackme]

The WTCPT is good for SMD work, runs about $150.

[kriminal]

Damn too much
I'm looking for something sub 40
I have used the cheapo orange ones before for motherboard mods, but I guess I do need a better one for small work

Anyone got an extra lying around? Paypal?

[bornbad]

-8800Gt Vmod Gpu : 1.39V ( full)

Did you make a soft voltmode for GPU by Nibitor or it`s with hard volt mode?
I`m wondering because I havent got any higher vCore than 1.15 using Nibitor 3.5b. I could flash bioss with for example 1.3v but real V were just 1.15!

[Hazaro]

These are all hard mods with a resistor,

the BIOS mod thread I think you've been to already is here: http://www.xtremesystems.org/forums/...=164242&page=8

[Hazaro]

Where do I measure vGPU?

I put one on the purple dot, and the other on...

[N1ck R1mer]

Where do I measure vGPU?

I put one on the purple dot, and the other on...

on any ground point (GND blue):

http://www.xtremesystems.org/forums/...45&postcount=1

[heikis]

on any ground point (GND blue):

http://www.xtremesystems.org/forums/...45&postcount=1

the easiest is to connect the other pointer in the PSU ground (black lines in the middle of a 4pin molex)

[Hazaro]

on any ground point (GND blue):

http://www.xtremesystems.org/forums/...45&postcount=1

I tried to get a reading that way, but it wasn't coming up...
Not exactly easy to hold it on there...
I'll try again.

the easiest is to connect the other pointer in the PSU ground (black lines in the middle of a 4pin molex)
Today 02:40 AM

I'll try this as well, thanks.

[Hazaro]

Got it!

eVGA SC 8800GT default BIOS & no OVP mod.

1.111V idle desktop
1.149V Crysis medium settings
1.151V Crysis high settings

*Craftsman 82344 Digital Multimeter