-
Welcome to Overclockers Forums! Join us to reply in threads, receive reduced ads, and to customize your site experience!
7800 Bios Voltage
- Thread starter sohxc
- Start date
- Joined
- Mar 24, 2002
- Location
- Plymouth, MN
I am also kind of curious on this, I'm going to be running dual 7800GT's SLI with water cooling and heat is not an issue, yet...
- Joined
- Mar 24, 2002
- Location
- Plymouth, MN
Have you overclocked the card yet? I'm wondering if you were able to get a higher clock on the .1V difference?
- Joined
- Mar 24, 2002
- Location
- Plymouth, MN
what were you clocking before that bios change/voltage increase
- Joined
- Mar 27, 2004
- Location
- Manhattan, KS
I've been looking on how to do this (uping the voltage) on my 7800gtx. How do i go about doing this? Is there an easy bios mod out there for my setup?
thnx
~bikinistud
thnx
~bikinistud
- Thread Starter
- #9
- Joined
- Oct 8, 2004
- Location
- San Antonio, Texas
There is more to upping the volts than just heat. Just because your card isnt overheating doesnt mean the voltage is safe. 1.5v is safe but im not sure you want to go any higher than that.
- Joined
- Mar 27, 2005
- Location
- Fresno, CA
I had a volt-modded 7800GT that I took up to to 1.6V without any problems. But when I tried to inch up a little higher I started to get video corruption even right in Windows. And I was cooling it to <31C with a TEC. . . . Unfortunately I accidentally killed that card one morning when I was measuring the voltage while it was running. 
. . .
Anyhow, I don't think there should be anything to worry about at 1.5V as long as you are watching your temps. . . . I think I'll try that BIOS volt-mod before I do another soldered volt-mod.
. . . Anyhow, I don't think there should be anything to worry about at 1.5V as long as you are watching your temps. . . . I think I'll try that BIOS volt-mod before I do another soldered volt-mod.
- Joined
- Aug 20, 2003
A bios volt mod on a 7800gt will only go up to 1.5v, higher values do nothing. It should only be done if you have enough cooling (make sure you watch for artifacts). Also, GTXs are not able to do bios volt mods.
- Joined
- Dec 22, 2004
- Location
- Granite Bay, California
I gave this a try (increased to 1.5v) on my Leadtek 7800GT Extreme (450/1050 stock), with stock cooling.
Coolbits detected optimal:
Before mod- 467/1.08
After mod- 486/1.12
This is with the delta set at 0, tempatures get up to about 62C max thus far benching, still testing for 24/7 use at a conservative 480/1100. This is up from what I've been running rock-stable, artifact free for 4 months 460/1100. A 20MHz increase on top of your past stable max overclock isn't bad for a simple, non-physical mod. I'd say it's worth a shot to 7800GT owners willing to take the slight risk.
Coolbits detected optimal:
Before mod- 467/1.08
After mod- 486/1.12
This is with the delta set at 0, tempatures get up to about 62C max thus far benching, still testing for 24/7 use at a conservative 480/1100. This is up from what I've been running rock-stable, artifact free for 4 months 460/1100. A 20MHz increase on top of your past stable max overclock isn't bad for a simple, non-physical mod. I'd say it's worth a shot to 7800GT owners willing to take the slight risk.
- Joined
- Aug 20, 2003
nice results JonEapples, when i had my GT i was able to get it from 470 max to 530 on the core (was wc'd), I just wish there was an easy way to volt mod the GTX...
- Joined
- Feb 26, 2006
- Location
- Somewer in oc heaven
I had it for 1 month at 1.7 watercooled tough... after that it just stoped working while playing quake 4 
My load was just at 42 but simply fried... Now I use this old x800
My load was just at 42 but simply fried... Now I use this old x800Similar threads
