• Welcome to Overclockers Forums! Join us to reply in threads, receive reduced ads, and to customize your site experience!

New question: Voltage mod on Kt7a-raid

Overclockers is supported by our readers. When you click a link to make a purchase, we may earn a commission. Learn More.

SharkyTM

Member
Joined
Mar 9, 2001
Location
Ithaca, NY
Is there a bios update that allows me to go beyond 1.850 volts...? i think i need to in order to reach over 1430 ... any help would be appreciated... im still using ww bios... which one is best, have heard of some problems with newer bios actually REDUCING the overclocking of a chip...'

Shark
 

Hoot

Inactive Moderator
Joined
Feb 13, 2001
Location
Twin Cities
No, it is a hardware modification. There are two parts to it. The first one involves placing a resistor between two of the leads on the programmable voltage IC to allow a higher voltage to occur than what you call for in the bios. The second involves installing a second resistor to fool the overvoltage protection circuit on the same IC so it does not interpret the higher voltage from the first mod as an error condition. I have done two so far. In both cases I use a small variable resistor for each function. That allows you to fine tune the settings as opposed to soldering in a fixed value resistor and hoping it satisfies the situation. Believe me, you don't want to do this several times. Soldering flat-pack IC leads is a very painstaking and precise process. As I've said before, it is not the project to learn soldering on. There are several "how-to" articles around the OC web sites. I read all of them before I began, to get a proper perspective on the challenge.

Hoot
 

AZZKICKER

Senior Member
Joined
Dec 18, 2000
Location
North Little Rock, Arkansas
Hoot (Apr 02, 2001 07:10 p.m.):
No, it is a hardware modification. There are two parts to it. The first one involves placing a resistor between two of the leads on the programmable voltage IC to allow a higher voltage to occur than what you call for in the bios. The second involves installing a second resistor to fool the overvoltage protection circuit on the same IC so it does not interpret the higher voltage from the first mod as an error condition. I have done two so far. In both cases I use a small variable resistor for each function. That allows you to fine tune the settings as opposed to soldering in a fixed value resistor and hoping it satisfies the situation. Believe me, you don't want to do this several times. Soldering flat-pack IC leads is a very painstaking and precise process. As I've said before, it is not the project to learn soldering on. There are several "how-to" articles around the OC web sites. I read all of them before I began, to get a proper perspective on the challenge.

Hoot

what did you get for your V Core MAX?
 

Hoot

Inactive Moderator
Joined
Feb 13, 2001
Location
Twin Cities
I was not interested in going above 2.35V, so I set the voltage control pot to allow that amount. I also adjusted the OVP pot so that 2.35 would not trip the OVP. I don't know how high it will go. At 2.35V the +5V output on my 400W PSU was just starting to collapse. I don't think it could have sourced enough current for much more than that. Believe me, 2.35V resulted in a whole lot of power being consumed by the CPU and resultant heat generated. I did not stay at that setting for long, out of long-term concern for the CPU. Shortly after that, I got a faster CPU, so it's a moot point now.

Hoot
 

AZZKICKER

Senior Member
Joined
Dec 18, 2000
Location
North Little Rock, Arkansas
well i have 2 300 watters tied together at the ATX connector all the wires

also i had my A7V running this 950 t bird @ 1357 @ 2.33 volts

and 1311 @ 2.25 volts and i ran it at that for 4 months

then got this KT7A with phase one mod and its running 1200 @ 2.10 volts @ 133 fsb

it can run 1268 @ 142 fsb but its lagging a little so it needs a little more voltage

but its stable

weird
 

Hoot

Inactive Moderator
Joined
Feb 13, 2001
Location
Twin Cities
I just did an advanced google search on the key words kt7 voltage mod and got about 350 hits. Many were reduntant. Sorry, I didn't add them to my favorites at the time.

Hoot