Epox 9NPA Vmem voltmod

[RipperFk]

I have Epox 9NPA+Ultra mobo. And I have two one-sides 512Mb Hynix D43 modules.
This modules good work at 260 (520) MHz 2.5-3-3-5-1T 3.1v with active cooling.
At 270 (540) MHz SuperPi crash after 10-20 minutes.

For stable on this clock need more voltage (3.2-3.3v?).
What do this?

[ent]

I have Epox 9NPA+Ultra mobo. And I have two one-sides 512Mb Hynix D43 modules.
This modules good work at 260 (520) MHz 2.5-3-3-5-1T 3.1v with active cooling.
At 270 (540) MHz SuperPi crash after 10-20 minutes.

For stable on this clock need more voltage (3.2-3.3v?).
What do this?
Only some D43 sticks gain extra MHz, mainly there is no diffrence between 2.8V and 3.3V on Hynix's rams. 260 is nice for D43, I think you won't get anything from doing Vdimm mod.

BTW: I think Vdimm mod should be similar to the mod on the 9NDA3+.

[Davos]

http://www.sysxtreme.com/showthread.php?t=246

[RipperFk]

I see contact dot on PCB. This marked as "vdimm". Connect this dot from 3.3v PSU and look - Vdimm=3.3v!
But my memory cannot work stable at 3.3v.

I`m use memory at 240 (480) MHz 2.5-3-3-5-1T 3.0v.
This fate...

[RipperFk]

http://images.people.overclockers.ru/30262.jpg

[ent]

I dont think that connecting 3.3 rail to Vdimm is a good idea. :nono: Epox boards are supplying Vdimm from +5V rail, which is usually more stable. Just look , if the Vdimm section is the same as one on the 9NDA3 and do the normal mod.

[amduser]

the epox 9npa+ does take the vdimm out of the 3.3 volt line. here it a pic of a simple vdimm mod: Link (http://www.forumdeluxx.de/forum/showpost.php?p=1708044&postcount=70) to a pic.

[Hinnavaatlus]

http://www.forumdeluxx.de/forum/showpost.php?p=1708044&postcount=70
has anyone tryied that? :stick:

have that mobo and 3,1v is way to low for my bh5
100k is correkt? :rolleyes:

[Hinnavaatlus]

anyone?

[Jeff]

I did this mod last night with a 250KOhm VR...
http://home.earthlink.net/~adventurevision/9NPA+.JPG

I would have used a 100KOhm VR but I didn't have one onhand. The mod works but I haven't tried higher than going from 2.5v to 2.6v. I just wanted to test the mod to make sure it worked.

I'll see how high the Vdimm will go sometime this weekend when I have some free time. But supposedly this board derives it's Vdimm from the 3.3v rail so don't expect much more than 3.3v. :D

[Hinnavaatlus]

damnit.....i mus buy now D43 for that voltage :stick:
realy hurts :slapass:

[Hinnavaatlus]

Any news? :worm:

[Revage]

does this mod work on epox 9npaj ?

[Hinnavaatlus]

Revage, asi on ju sama pcb-ga plaat
loomulikult töötab ka sinu plaadiga

[Revage]

I did this mod last night with a 250KOhm VR...
http://home.earthlink.net/~adventurevision/9NPA+.JPG

I would have used a 100KOhm VR but I didn't have one onhand. The mod works but I haven't tried higher than going from 2.5v to 2.6v. I just wanted to test the mod to make sure it worked.

I'll see how high the Vdimm will go sometime this weekend when I have some free time. But supposedly this board derives it's Vdimm from the 3.3v rail so don't expect much more than 3.3v. :D
any news ? but where is the mesurement point ?

[RipperFk]

New bios. Can 3.2v mem.
http://www.epox.com.tw/eng/support.php?ps=335&type=1

[UTF Nigtmare]

I did this mod last night with a 250KOhm VR...
http://home.earthlink.net/~adventurevision/9NPA+.JPG

I would have used a 100KOhm VR but I didn't have one onhand. The mod works but I haven't tried higher than going from 2.5v to 2.6v. I just wanted to test the mod to make sure it worked.

I'll see how high the Vdimm will go sometime this weekend when I have some free time. But supposedly this board derives it's Vdimm from the 3.3v rail so don't expect much more than 3.3v. :D

Then you can do the 3,3V sence wire mod or buy an OCZ Powerstream ;)

[UTF Nightmare]

Did de mod today and it works quitte well. Only on 3,5V it's really unstable. But maybe it's because one wire isn't really soldert very well. Did 3,3V sence wire mod too. Works quitte fine too, 3,7V :D

[UTF Nightmare]

I have found de Vdimm measure point :)

http://www.desertshooter.nl/epoxvdimm.PNG

[K404]

@UTFNightmare: What did you do to get 3.5 to 3.7VDIMM?

Cheers

Kenny

[tdamocles]

This should be put in the voltmod sticky thread...

[Kasparz]

This should be put in the voltmod sticky thread...
http://www.eoz.lv/forum/showthread.php?t=63

[UTF Nightmare]

@UTFNightmare: What did you do to get 3.5 to 3.7VDIMM?

Cheers

Kenny

Screw the VR up ;)

There is btw some other place to measure. A bit easier to find.

V_Dimm is written next to it :slap:

http://www.desertshooter.nl/epoxvdimm2.PNG

Stuped:slap:

[tdamocles]

Screw the VR up ;)

There is btw some other place to measure. A bit easier to find.

V_Dimm is written next to it :slap:

http://www.desertshooter.nl/epoxvdimm2.PNG

Stuped:slap:

What kind of vdimm can I get out of this mod?

[UTF Nightmare]

3,2V standard with new bios. And with voltmod the max of your 3,3V wire on your PSU ;)

Here a some pics of my Vmod.

Sorry for bad quality. Is taken with webcam.

http://www.desertshooter.nl/Cam00003.bmp

http://www.desertshooter.nl/Cam00002.bmp