Re:GeForce 7950 GT, modifying voltage in BIOS has no effect? - MVKTech Support Forums :: mvk.tech

Forums

TreatYouGoods
Camera Digital Cameras Video Cameras

Main Menu

Getprice Comparison
Digital Cameras

Latest Downloads

Jan.05	TpuGPU-Z v0.3.1
Jan.02	ForceWare Vista (32-bit) v185.20
Jan.02	ForceWare Vista (64-bit) v185.20
Jan.02	ForceWare WinXP (32-bit) v185.20
Jan.02	ForceWare WinXP (64-bit) v185.20

Price Comparison
Comparison shopping Laptop Tomtom Digital Camera Mobile Phones Ink cartridges VOIP Shopbot NZ Shopbot ZA

Top Downloads

592554	Omega WinXP2k v1.6693
320685	Omega WinXP2k v1.4523a
230854	nvFlash v5.13
225058	NiBiTor v3.2
165595	RaBiT v2.2.1

MVKTech Support Forums

home | post reply | threaded view | help

Boardwalk :: Forum List

NVIDIA Graphics Cards

NVIDIA GeForce BIOS

Viper503
User

Fresh Boarder

Posts: 3

Karma: 0

GeForce 7950 GT, modifying voltage in BIOS has no effect? - 2008/07/02 16:57 Hi, this is my first post. Just getting into the world of BIOS editing using NiBiTor. My problem is that no matter what I change my 3D voltage value to, it doesn't seem to have any effect on my temps or stability. I think I've heard that the GeForce 7900 GT's can't change their voltage through the BIOS, so does that mean that the GeForce 7950 GT's are out, too? If so, I'm interested in knowing the reason why. Also, if such is the case, does anyone know how I could do a simple pencil modification on the card to get it's voltage up? Thanks.

| | The administrator has disabled public write access.

Mavke
Admin

Admin

Posts: 14497

Karma: 371

Re:GeForce 7950 GT, modifying voltage in BIOS has no effect? - 2008/07/03 08:57 Well welcome, first of all you are right that with the GeForce 7900 GT's you couldn't change the voltage and why is very simple. The BIOS can only increase the voltage if the voltage circuitry has the possibility and the GeForce 7900 GT didn't have that at all, it had only one voltage level. On the GeForce 7950 GT normally you have two voltage levels. Now to be able to help you we would really need to know which brand your card is and the version, and you will also need to attach the original BIOS of your graphics card so we can check it out.

| | The administrator has disabled public write access.

Viper503
User

Fresh Boarder

Posts: 3

Karma: 0

Re:GeForce 7950 GT, modifying voltage in BIOS has no effect? - 2008/07/03 15:16 I apologize cause I wasn't very descriptive in my problem description. I can, by default, change between 1.25 and 1.35 in the BIOS, just like you said. I was attempting to add VIDs for 1.40V and 1.45V, thinking that that alone would change the voltage level. But thank you for clarifying that the BIOS is not the only determining factor for the voltage. So I'll need to change the voltage circuitry, right?

The easiest modification I've found for the GeForce 7950 GT is a conductive ink pen tweak. It changes the voltage to 1.4V. Now that being said, does that mean that after performing the modification I will need to go into the BIOS and add a VID for 1.4V? I'm at work right now so I can't send in my BIOS, but suffice to say that my card's an XFX GeForce 7950 GT with 256MB. Thanks again for you help.

| | The administrator has disabled public write access.

Viper503
User

Fresh Boarder

Posts: 3

Karma: 0

Re:GeForce 7950 GT, modifying voltage in BIOS has no effect? - 2008/07/03 21:16 Well, I've determined that the voltage modification I was looking at is a +0.2V change. I guess it was dubbed a 1.4V update on the site I was looking at because the GeForce 7900 GT runs at 1.2V. So I'm guessing that if my BIOS is running at 1.35V and I put that modification in, it'll take it up to 1.55V. Ouch, so I think I'll change the voltage down to 1.25V in the BIOS and do the modification for a total of 1.45V. Case closed, unless someone else has something helpful to add.

| | The administrator has disabled public write access.

Mavke
Admin

Admin

Posts: 14497

Karma: 371

Re:GeForce 7950 GT, modifying voltage in BIOS has no effect? - 2008/07/03 23:18 So you are talking about the hardware modification and yes that you do with what you want, and many sites have details about that but that is not really our style as by doing so you loose the warranty. And yes it is traceable even when you undo it. The voltage tweaks via the BIOS are not as many manufacturers set their cards alreadt at the 1.35V to overclock better than with the standard 1.25V.

And no you can't just go introducing new VID's with other voltage numbers as you want as the voltage circuitry won't know these and won't neither be able to unstand these. The GeForce 7950 GT only knows the two VID's levels which can give 1.25V or 1.35V and that is it. So whatever you change to try and make 1.40V or 1.45V won't make any difference at all. But yeah enjoy, but make sure you got good cooling!

| | The administrator has disabled public write access.

Boardwalk :: Forum List NVIDIA Graphics Cards NVIDIA GeForce BIOS

Joomlaboard Forum Component 1.1.2 Stable
Two Shoes M-Factory

Compare Prices
Shopbot.ca LCD TV GPS Digital Cameras Mobile Phones Laptops LCD Monitors MP3 Players Appliances

Online Casino

New Reviews

	Gainward GeForce GTX 260 Standard Version
	Gainward BLISS 9800 GX2 Dual-GPU Version
	PowerColor Radeon HD 3650 Xtreme Cooling
	Dragon Lasers Hulk Green Laser Technology
	Gainward BLISS 8800 GT 1GB Golden Sample

New Previews

	NVIDIA GeForce 9800 GX2 Dual-GPU Version
	PowerColor Radeon HD 3850 Xtreme Edition
	PowerColor Radeon HD 2600 XT 256MB Card

MyPMS Professional

Inbox
	You have 0 new message(s).

Joomla! is Free Software released under the GNU/GPL License.