voltmod owns

9th October 2004, 15:05

yesterday I did a voltmod to increase the voltage of my northbridge. This is the result

http://users.pandora.be/kr15t0fke/pc...%20moehaha.JPG

before I could only reach 223 fsb

. I didn't tried it any further because ther is now 1.8V on my northbridge. How high may I go?

You can see my ram is running 5/6. It only goes to 227Mhz super pi stable

.

I removed the heatspreaders yesterday, and they are CH-5. Can I go higher with a vdimm mod?

jmke · 9th October 2004, 15:30

how much voltage are you feeding that NB ?

9th October 2004, 15:33

1.8V, 1.6v in bios, but 0.2 volt higher with voltmod.

BTW, on the screen my cpu voltage is a bit high, forgot to put it lower after I lowered the multiplier

jmke · 9th October 2004, 15:35

doh, you already wrote that in your post, didn't see it, sorry , what mobo did you use? and wha guide?

seems that .2v+ is quite effective. te NF-S can go up to 1.8v also by default no? or am I mistaken?

should not push it over 2v though, nForce2 chips don't like that apparantly

(ask richbastard)

RichBa5tard · 9th October 2004, 15:40

Mine fried at 1.95v. Be carefull.

The northbridge chip is able to sustain 1.8v for a long if well cooled, but be sure the voltage regulators feeding the chip don't burn up (Epox motherboards).

jmke · 9th October 2004, 15:41

http://www.madshrimps.be/forums/show...t=%2Aepox% 2A

9th October 2004, 15:42

my board goes to 1.7V but it undervolts a lot. I had to put it on 1.7 to reach 19* Mhz.

. So I knew that my northbridge was holding me back.

I checked my voltage with a multimeter and It was 1.9V but the guide told me that the reading was 0.1V too high. So my bios is 1.6V (maybe thats like 1.5V) and the voltmod does the rest of the 1.8V.

Now I know that I have a good chip, but my mobo was bad because of the undervolting.

I want to try to go higher. I think I can reach it with that voltage. But the 12v rail of my psu is quiet low now. Maybe I try it tomorrow, now I have to work at a "spaghettifestijn"

edit: nothbrige is cooled by a zalman cooler with a 40mm fan and a 80mm casefan blowing on it. Even the cpu cooler blows air on the northbridge. I also cooled my southbridge

.

edit 2: If I go higher (fsb) without reasing the voltages, is there a risk to burn my mobo???

9th October 2004, 17:31

no

Quote:

Originally posted by jmke
what mobo did you use? and wha guide?

jmke NF7 rev2 allows up to 1.7V in the bios

*edit* I noticed on telenet that you had an NF7, still interested to know how you modded it.

It's amazing that there can be so much difference while essentially we have the same boards. You gain 40 fsb just by doing a Vdd mod I gained 0 fsb from the Vdd mod

jmke · 9th October 2004, 17:35

which is better then 1.5v from MSI :/

Sidney · 9th October 2004, 17:41

NF7 Rev1 also has 1.7V for the NB chip.

9th October 2004, 15:05	#1
kr15t0f Posts: n/a	voltmod owns yesterday I did a voltmod to increase the voltage of my northbridge. This is the result http://users.pandora.be/kr15t0fke/pc...%20moehaha.JPG before I could only reach 223 fsb . I didn't tried it any further because ther is now 1.8V on my northbridge. How high may I go? You can see my ram is running 5/6. It only goes to 227Mhz super pi stable . I removed the heatspreaders yesterday, and they are CH-5. Can I go higher with a vdimm mod?

9th October 2004, 15:30	#2
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,022	how much voltage are you feeding that NB ? __________________

9th October 2004, 15:35	#4
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,022	doh, you already wrote that in your post, didn't see it, sorry , what mobo did you use? and wha guide? seems that .2v+ is quite effective. te NF-S can go up to 1.8v also by default no? or am I mistaken? should not push it over 2v though, nForce2 chips don't like that apparantly (ask richbastard) __________________

9th October 2004, 15:40	#5
RichBa5tard [M] Reviewer/HWBot ***** Join Date: May 2002 Posts: 3,344	Mine fried at 1.95v. Be carefull. The northbridge chip is able to sustain 1.8v for a long if well cooled, but be sure the voltage regulators feeding the chip don't burn up (Epox motherboards). __________________ HTPC (mac osx): Mac Mini \| Core Duo 1.6Ghz \| 2GB DDR2 \| 26\" TFT Development (mac osx): Macbook \| Core 2 2.0Ghz \| 4GB DDR2 \| 250GB HD Games (win xp): E2160 @ 2.4Ghz \| HD3850 OC \| Asrock 4coredual-vsta \| 2GB DDR2

9th October 2004, 15:41	#6
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,022	http://www.madshrimps.be/forums/show...t=%2Aepox% 2A __________________

9th October 2004, 15:33	#3
kr15t0f Posts: n/a	1.8V, 1.6v in bios, but 0.2 volt higher with voltmod. BTW, on the screen my cpu voltage is a bit high, forgot to put it lower after I lowered the multiplier

9th October 2004, 15:42	#7
kr15t0f Posts: n/a	my board goes to 1.7V but it undervolts a lot. I had to put it on 1.7 to reach 19* Mhz. . So I knew that my northbridge was holding me back. I checked my voltage with a multimeter and It was 1.9V but the guide told me that the reading was 0.1V too high. So my bios is 1.6V (maybe thats like 1.5V) and the voltmod does the rest of the 1.8V. Now I know that I have a good chip, but my mobo was bad because of the undervolting. I want to try to go higher. I think I can reach it with that voltage. But the 12v rail of my psu is quiet low now. Maybe I try it tomorrow, now I have to work at a "spaghettifestijn" edit: nothbrige is cooled by a zalman cooler with a 40mm fan and a 80mm casefan blowing on it. Even the cpu cooler blows air on the northbridge. I also cooled my southbridge . edit 2: If I go higher (fsb) without reasing the voltages, is there a risk to burn my mobo???

9th October 2004, 17:35	#9
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,022	which is better then 1.5v from MSI :/ __________________

9th October 2004, 17:41	#10
Sidney Member Join Date: Mar 2004 Posts: 15,738	NF7 Rev1 also has 1.7V for the NB chip. __________________ lazyman Opteron 165 (2) @2.85 1.42 vcore AMD Stock HSF + Chill Vent II

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