vcore mod ASRock 775Twins-HDTV

[Meaker]

Bump, no chance of a modified bios and the like, or is there just no hardware there?

[Lasac]

The VR set to 1K will give you real vcore. To have "modded" vcore you need to drop down some ohms from VR.

I dont have this board so i dont know the exact ohms you need to have 1.55v. This PowerManagment chip only gives you aroud 1.575v to 1.6v max vcore.

Read the mosfet legs and coils with multimeter from this red zone:


I believe that vcore reading point is there.

If I have one i can search for it and for alternative point and droop/vdd mod to

The revision 2.0 uses ST L6714. I'm looking now to block diagram and scheme of it from ST website.

This chip goes up to 1.6v output, and have more vid control legs.

From the scheme I believe that is the same mod method (but in pins 41 to 19 or 41 to gnd). This PowerMangment chip is based on L6711 but is modified to work with new AM2 and Intel LGA requirements.

If you can chose some vcore from bios i think that with VR set low you will have 1.6v output with 1.2v from bios.

If i have knowledge from bios programing i believe i can mod original bios to set vcore from bios setup. Just some hex code work and i'm noob from that area. I leave it to expert guys.

Try this mod carefully. Buy multiturn VR and drop down the ohms slowlly to see if vcore changes. If not dont go much lower and report here the results to find a solution.

For vdd mod of first revision i believe that the chip with green circle is the responsible for that. Just need the ref. of it or a good pic of it:



Cumps!

[Lasac]

One friend done the mod on rev2.0 and don't worked. There will be another way to do it.

I dont have time to read entire datasheet and my dfi expert died (seems like cold boot). When I have time and pc working I'll search for a trully solution to this board.

I'm going to rest now cause i'm back from hospital some mins ago.

Cheers

[kuru]

i try this mod but don't work!!!
vcore --- no boot
vdimm --- no effect