Asus nFORCE2 A7N8X mem/cpu volt mod

**Galifrey** · 12-02-2002, 08:29 AM

bah screwed it up...

Now got no voltage at all to the cpu it seems...

Ah well, Epox 8RDA+ ordered instead

Me

vmodding

**Maaij** · 12-02-2002, 08:42 AM

YESSSSS!!!

My Vcore and Vddr is finished

Let's see what my AMDXP 1800+ wil do now

AIUGA0242 core, Prometeia cooled

**vmsrules** · 12-02-2002, 01:00 PM

i did the vcore mod...
my xp1800+ palomino is running at 9.5x182 vcore 1.95.
it won't run 183 no matter how high the voltage is.
not great, 200mhz oc, but in the old days it would be.

Thanks sys and ddtung

**Ace-a-Rue** · 12-02-2002, 06:32 PM

Nice job in finding those babies....Well done!!

**PimpJack** · 12-04-2002, 03:55 PM

Thanx!!!! We need some mods to make this a sticky

Can the asus probe monitor the raised voltages? I would rather not get a multi m. Also when the vr is set to its highest 25k then what voltage is selected? would that be neutral and give me what bios reads? If not what is a safe setting to get into windows and experiment.

One more thing sys. I noticed u are using pc3500. This board can't oc pc3500 if it is ran in sync so why would u need to do a v mem modd. shouldn't u just keep it at the minimum of 2.6v since ur mem has so much overhead!

sys: please post complete pics of ur board volt modded. Is there a need to cool (heatsink) any of the chips on the motherboard? Even for overclocking puposes like the clock gen or susch?

**nikhsub1** · 12-05-2002, 06:12 PM

Originally posted by sysfailur
Thanks! I use the fan plug grounds myself.

Please excuse my ignorance but WHICH pin on the fan header is the ground?

**Maaij** · 12-06-2002, 01:06 AM

The black one

**sysfailur** · 12-06-2002, 01:39 AM

Originally posted by nikhsub1
Please excuse my ignorance but WHICH pin on the fan header is the ground?

Well I dunno how to describe it... if you look on a fan plug there is that plastic thingy.....

Code:

 _____
| ___ | <---plastic thing sticking up
| ... | <---3 pins
|_____| 
    ^
    |
  ground

Hope that works

**sysfailur** · 12-06-2002, 01:46 AM

Originally posted by PimpJack
Thanx!!!! We need some mods to make this a sticky

Can the asus probe monitor the raised voltages? I would rather not get a multi m. Also when the vr is set to its highest 25k then what voltage is selected? would that be neutral and give me what bios reads? If not what is a safe setting to get into windows and experiment.

One more thing sys. I noticed u are using pc3500. This board can't oc pc3500 if it is ran in sync so why would u need to do a v mem modd. shouldn't u just keep it at the minimum of 2.6v since ur mem has so much overhead!

sys: please post complete pics of ur board volt modded. Is there a need to cool (heatsink) any of the chips on the motherboard? Even for overclocking puposes like the clock gen or susch?

The asus probe can read the raised CPU voltage, but not the raised mem voltages. When it's set @ 25k, I'm not sure, but it's not anything dangerous.

About my memory, I _was_ planning on getting an 8k9a2+ but newegg never stocked it... so then I saw the Asus NF2 was in stock and said ya know what the heck with the 8k9a2+ I'll just get the A7N8X. And don't think that we won't get past 211mhz fsb. I'm sure I'll be able to get higher soon enough w/ a setfsb programmed for the NF2.

**RoydRage** · 12-06-2002, 05:29 AM

Originally posted by sysfailur
The asus probe can read the raised CPU voltage, but not the raised mem voltages. When it's set @ 25k, I'm not sure, but it's not anything dangerous.

About my memory, I _was_ planning on getting an 8k9a2+ but newegg never stocked it... so then I saw the Asus NF2 was in stock and said ya know what the heck with the 8k9a2+ I'll just get the A7N8X. And don't think that we won't get past 211mhz fsb. I'm sure I'll be able to get higher soon enough w/ a setfsb programmed for the NF2.

Well, Sys You have given the answer to the RAM voltage...

I just used an 8k Resister, this way you don't have to worry, and wonder if the adjustment went out when you can't see it anymore. And measured the voltage with the board outside the case... It gave me 3.28v... And each step lower in the BIOS is proportionatly lower...

You're right about... The FSB.. I can really never get higher than 204MHz. With 1GB of XMS3500 C2.. and I see people with the EPoX and Abit Boards seem to all be doing about the same.... Very fast board for the Speed though... I'm Trying to make up my mind in using this, or the 8k9A2+ For my Big Prome/Lian-Li Christmas Project... The 9A is one sweet board... 218 FSB.... 3300 Sandra.. And VERY stable...

One Big advantage with the A7N8X though is you can use the ATI 9700 Pro... And because of the locked PCI Buss, you can use what ever cards, or hardrives you want without having to worry it limiting you're OC..

Hmmm... Decisions, Decisions...

Later.... Royd

**nikhsub1** · 12-06-2002, 09:30 AM

Originally posted by sysfailur
Well I dunno how to describe it... if you look on a fan plug there is that plastic thingy.....

Code:

_____ | ___ | <---plastic thing sticking up | ... | <---3 pins |_____| ^ | ground

Hope that works

Exactly the answer I was looking for! Since I don't have any 3 pin fans in my system, I can't look for the black wire.

**PimpJack** · 12-06-2002, 06:08 PM

HMMM... no sticky yet? This is one of the most talked about mobos now'a days

**nikhsub1** · 12-07-2002, 09:05 AM

Another newb question, I went to radio shack, they didn't have a 25k or a 15k VR, they had others but they all had 3 connection points on them. Don't I wan't a VR with just 2 leads? One to mobo and one to ground right?

**Antomathy** · 12-09-2002, 08:27 PM

sorry to ask such a stupid question, but..

any chance that someone could quickly tell me what pins on the vr (for cpu) i need to wire up to ground and the pin on the motherboard?

i think i wire a wire frlom the motherboard to pin 1, then ground to pin 2. so i leave pin 3 empty?

**sysfailur** · 12-10-2002, 02:48 PM

To answer both of you guys, use the middle one and one of the side ones. Don't use both the outter pins.

All those mean is if you use the left and middle, or right and middle, one when turned clockwise will raise resistance, and if you use the other 2, when turned clockwise it will lower resistance. That's all. It really doesn't matter which way you choose to hook it up as long as you use the middle pin and one of the other 2.

**nikhsub1** · 12-11-2002, 01:44 PM

Success!!! VCORE mod complete!! Thanks sysfailur! I don't know HOW you soldered onto the board... I used an SMD Grabber, tiny test clip which holds like the devil and for the ground I used a 3 pin plug plugged to a fan header on the mobo!!! Now onto the VDIMM mod!

**eliteone** · 12-11-2002, 03:46 PM

am I at any risk doing these vmods? What should I put the VR at when I first test it out to make sure it doesnt pump crazy voltage through?

**sysfailur** · 12-11-2002, 03:59 PM

Originally posted by nikhsub1
Success!!! VCORE mod complete!! Thanks sysfailur! I don't know HOW you soldered onto the board... I used an SMD Grabber, tiny test clip which holds like the devil and for the ground I used a 3 pin plug plugged to a fan header on the mobo!!! Now onto the VDIMM mod!

Glad it worked for ya!!! I'm pretty new to soldering, but my neighbor gave me some good techniques. When I solder I always put a little solder on the pin I'm soldering and also on the wire I'm soldering to it. So when you connect it all you have to do is heat it up some and it connects really easy. The cpu one was SOOOOOOOOO hard to get, but I got it eventually hehe. The memory was easy as pie.

**sysfailur** · 12-11-2002, 04:01 PM

Originally posted by eliteone
am I at any risk doing these vmods? What should I put the VR at when I first test it out to make sure it doesnt pump crazy voltage through?

If you do em properly and make sure you have good solders before you fire it up you should be fine. You should set it @ the values given, 25k and 15k or whatever. From there you can then lower the resistance and raise the voltage

**eliteone** · 12-11-2002, 04:03 PM

Oh ok so 25k and 15k will keep me at the voltage that I set it to in the bios right? Then from there I lower it and the bios will tell me the vcore? Can the vdimm be checked in sandra or something? Oh and why do you say if I have good solders? I plan to juse use those little clips from radio shack and just clip em on. If a clip falls off it will just go back to the voltage that its set to in the bios right?

**sysfailur** · 12-11-2002, 05:34 PM

Originally posted by eliteone
Oh ok so 25k and 15k will keep me at the voltage that I set it to in the bios right? Then from there I lower it and the bios will tell me the vcore? Can the vdimm be checked in sandra or something? Oh and why do you say if I have good solders? I plan to juse use those little clips from radio shack and just clip em on. If a clip falls off it will just go back to the voltage that its set to in the bios right?

Yes they should keep you at a normal voltage (maybe slightly raised, I forget). Vdimm can only be checked so far by taking a direct reading from the mosfet pictured.

And I meant if you don't have a good solder like the solder is touching more than it should, or whatever.

If you're using a clip then that's fine, you should be ok. Just make sure the clips are very small.

If a clip falls off... that may not be good. If the clip touches something else stuff could short out or fry maybe. Guys, correct me if I'm wrong, but I think that could happen.

**nikhsub1** · 12-11-2002, 05:50 PM

OK, my VDIMM mod is done too... The leg for the memory voltage is WAY smaller than for the core voltage... These clips REALLY hold, they are tiny and there is nothing exposed except the part that hooks to the leg. I have max VCORE of 2.05 and max VDIMM of 3.15, ahh just the way I like it! Pics soon...

**nikhsub1** · 12-12-2002, 12:33 PM

I thought I took MORE pics, oh well, here are a few shots of the SMD grabbers on the mobo:

**sysfailur** · 12-12-2002, 01:14 PM

Looks nice!!!

N8 · 12-12-2002, 03:02 PM

nikhsub1,

If you don't mind my asking, where did you get the SMD grabbers? I need to buy some someday & I'm trying to find em cheap somewhere

BTW, nice to see you over here...believe I recognize the name from overclockers.com forums

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