AmericanNightmare

The below guide is in it's entirety original content both picture and text and is soley owned by myself. No portion has been copied from any other source.

Using this mod i was able to achieve a stable 3.0GHz overclock @ 1.5v of my Opteron 1212(2.0GHz).

Before attempting this mod set your Vcore settings in BIOS to auto just to be on the safe side.

This is an extremely easy mod to do and works very well. It is a Vid 3 mod i chose this as it offers the best variety of voltage options. This chip is limited to 1.55v by specification but of course will go a bit higher but i would not suggest doing so as it may damage it.

Controller chip shown is an ST L6714D used on many ASRock boards and will marked as such. The chip should be located directly above the CPU socket and on this board is plain veiw although on other models it may be covered by the retainer. The solder pads bridged correspond too pin 42 so if your board has this chip you can simply trace the route to the pads from said pin and bridge using conductive ink/solder. Unless your real handy with an iron i would use conductive ink or a window defroster repair kit (just connective ink anyway) found at almost any auto parts store for around $7.00.
Be careful too cover the surrounding area very well only leaving the 2 pads to be bridged exposed.

For best results apply the connective ink slighty past each pad. DO NOT however allow your ink to touch ANY other pad or pin or any other surrounding metal/solder otherwise you may end up with a dead board!






Datasheet for the ST L6714 with pin placement schematic can be found here in PDF format.Datasheet


Corresponding Vcore setting in BIOS after mod.
0.8V = 1.0V
0.825V = 1.025V
0.85 V = 1.05V
0.875V = 1.075V
0.9V = 1.1V
0.925V = 1.125V
0.95V = 1.15V
1.175V = 1.375V
1.20V = 1.40V
1.225V = 1.425V
1.25V = 1.45V
1.275V = 1.475V
1.3V = 1.5V
1.325V = 1.525V
1.35V = 1.55V


I hope that some ASRock owners will find this helpful it is a very cheap,easy and effecient way to turn your ok motherboard into a pretty decent overclocker. As long as your ASRock motherboard has the ST L6714D or L6714 tension controller this mod or a slight variation thereof should work no matter the socket.

UPDATED: It seems this chip is also used on some ASRock products for Intel processors, the best way to determine if your motherboard does indeed utilize this chip is took visually locate it,if it is the L6714 or L6714D it will printed on the top of the chip.

*I would like to thank whe3ls for helping me make the decision to use the defrost repair paint. So thanks!

AmericanNightmare

* Both text and photo are original content. The photo of the L6714D chip and mod is an actual image of the results after applied to my motherboard.

If you choose to apply this modification you do so at your own risk and neither myself or OCN assume any responsibility for any damage that may occur as a result. Hardware modification will most likely void your warranty consider yourself warned.

The Duke

Nice
When we were modding the L bridges on the old early socket A CPUs, that stuff was popular, along with a conductive "Silver Pen" for circuit repairs

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CL3P20

I am preparing to do the vcore mod on my 775dual-vsta mobo...the setup looks similar...I will have to see if it matches up. Otherwise..I will be soldering a 30k VR into one of the resistors.

Can anyone tell me if penciling a resistor marked for a VR mod, have the same affect as using the resistor?

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INTEL 45

e8400: 5.13ghz
e7400: 4.5ghz
Q6600: 4.44ghz
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AmericanNightmare

If your motherboard uses the L6714D or L6714 it should be simply a matter of locating pin 42 and tracing the circuit to the corresponding pads. (for the Vcore mod)

I updated the guide with link to the datasheet and pin placementic shematic to make it a bit easier.

CL3P20

well..the 775Dual-vsta, doesnt have vcore options in the BIOS..and the pads in your pic are all occupied by resistors..+ the layout is a little different. Pin 42 tones out to only one of an empty set of pads in a row of resistors..Im not sure this mod is the right one for my mobo, as I dont have options to begin with...how is it going to raise the vcore at all...

I am thinking a 50-100k VR on either pin# 21 or # 23 is going to give selectable vcore output...but not too sure..this IC is a weird one.

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..:Q6600 Club:..

INTEL 45

e8400: 5.13ghz
e7400: 4.5ghz
Q6600: 4.44ghz
16.5k-3D '06 WR, 1x 8800GS
My photo albums

AmericanNightmare

Agreed, it most likely is not a good idea if the rest of the pads in the row corresponding to Vid pins are occupied by resistors. Amoungst the models where this sort of mod is successful they all share an unoccupied row in common. I imagine the resistors are part of the reason there are no Vcore options to begin with.

It is a weird one indeed i had a lot of trouble puzzling this one out.

Pin 21 makes the most sense to me but i had not really given it much thought until now. I saw a Vcore mod on a AliveNF6G-DVI somewhere using a 50K VR.

CL3P20

There is the mod I tried last night...no luck. it kicked the OVP on for the mobo...and no voltage output for the CPU mosfets..at all...0.00v with the mod hooked up..no matter what resistance pot I used [30k-1000k]. Un-hooked the mod..still works.

Johhny Bravo is such a kidder!

__________________

..:Q6600 Club:..

INTEL 45

e8400: 5.13ghz
e7400: 4.5ghz
Q6600: 4.44ghz
16.5k-3D '06 WR, 1x 8800GS
My photo albums

Johnny Bravo

I am anything but a kidder, and to prove it here I am ready to back it up.

My vmod works, and I know it works because I use it myself

I'm willing to help but I'm not going to idly stand by and have my name shot down.

John

Johnny Bravo

I see having read backwards that you are using a 775Dual-vsta (was thrown by the title of this thread) regardless can you check that you attempted to solder the vmod in the right points (left side of the the capacitor and top right empty pad for ground) as you are the first person to report it wrong but I've had several say it works.

CL3P20

As you can see, the locations of the leads is correct according to the pic, I pulled from the XS forum...I have inspected the solder points [as always, when finished..] using a magnifying glass to ensure no other 'connections' have been made.

This resulted in OVP on the mobo straight away...no POST and no increase in voltage..no matter what the resistance was tuned to, even using different sized trimmers [30k, 100k and 1000k] I got ..nothing.

Please tell me I am doing something wrong! This is a good WU producer for me, or was..it is running a 630j @ a crippled 3.5ghz now..max I can achieve on stock vcore.

__________________

..:Q6600 Club:..

INTEL 45

e8400: 5.13ghz
e7400: 4.5ghz
Q6600: 4.44ghz
16.5k-3D '06 WR, 1x 8800GS
My photo albums