if it dies and you RMA it you may get the new rev ;)
Printable View
if it dies and you RMA it you may get the new rev ;)
Your STevil man :D
I'le go check out the topics if there is a must have mod as the shop also sells pots n stuff.
Sorry that I push up this thread,
but i would like to know if anobody has still tried shorting or bypassing the diode yet.
I get 2,85 vdimm without any mod. With 2,7 in bios i get 2,75 real.
8rda vcore helped me to set 2,8 = 2,85 real.
Dont think anyone has yet..
It may be simpler to solder a wire from the input side of the mosfet directly to output side thus giving 3.3 direct to dimm.
I'll try the mods this week and I'll also try to bypass the diode. I'm already very curious if this is going to work.
Hell-Fire told me that the Southbridge voltage seems to be tied to the VDD. So if you run your VDD at 2V, the southbridge will nearly be cooked. I'm also very interested if this board tracks the Vtt.
And, if everything is running fine, I'll also consider doing the thermal diode mod on this AN35N-Ultra.
Stay tuned. ;)
yeah, would be great if this 2V VDD and 3,3V vDimm would be possible! Do you know which voltage the southbridge normaly has?
But at the moment it wouldn't be very usefull to do the vdimm mod. Getting from 2,85 to 2,9 isn't a huge difference.
Ps: the vdd measure point ist the right one, mit dmm shows 0,05 less than the bios... think isn't the right one.
We are still working on this.
I was told that my initial spot for checking the Vdd was incorrect.
I am not sure on this to be honest.
He said that as he turned the VR that the Vdd didnt seem to increase. He was thinking that maybe the Vdd was adjusting but that the measure point was not correct so he killed the board that way.
Regardless of that....that wouldnt explain the SB getting more than 2v through it.
I need someone to do the Vdd mod and then check the FETs to see which one is actually measuring the Vdd. And just because the bios shows .05v less than the possible measure point on the board does not mean the measure point is incorrect. In fact, few bios readings are dead on with the FET readings.
Someone step up to the plate and do the Vdd so we know the definitive place to check its voltage.
Unless I have done the Vdd wrong...very possible of course....then I ended up doing the Vagp instead. Which means that the Vagp and SB are tied together.
Very interesting indeed. I had planned to do the mods tomorrow, but I can't promise as I have other things with higher priority on my to-do list.
But, be sure that I'll let you know if I got it done. ;)
as soon as I get hold of my board and can find a cheap-o processor to abuse on it i'm good to play :D
I have a friend bringing his over this week.
Will relook over this board.
I am pretty sure I did the mods right, but had monitoring point wrong for the Vdd.
Isn't the Vdd even monitored in BIOS on the AN35N-Ultra??? :confused:
Yes you can check the vdd in the bios. Normal its at 1,7.
The vdimm mod is already reported and the measure point is the right one.
There are two measure points which are showing the same voltage at my DMM(The one you thought is for VDD and an other one)
When Ill be back at home (am at school) i will measure all points and post a pic.
btw: Could someone explain me what is vddq? is it the same as vdd?
Pic will be there in about 4 hours
Greetz from Germany
vddq is returns signal voltage of vdimm I think.
vref and vtt are 1/2 of vdimm/vddq
here is the promised picture of the measure points
hope it will help you
http://mitglied.lycos.de/freak2032000/an35n.jpg
the one i pointed as 2,07 is the 12V rail
Well, well, well, I've got a problem here!!!
I did the vmods (VCore-, VDD- and VDimm-mod) and only the VCore mod worked for me. I could raise the Vcore without a problem, but the VDD-mod (I used a 50K pot because I couldn't get a 100K one) did not work, the board just locked up at a cirtain point, when decreasing the resistence. Then I put it back to normal and it worked like a charm again. Not a single milivolt of increase when turning the pot, just the lockup. The VDimm-mod was a complete failure,too. I could turn the 1K pot complete down til you couldn't turn it any more and there was absolutely no voltage increase. The voltage always stayed at deafult (either 2,53V, 2,63V or 2,71V nothing more).
That was very strange, as I'm sure that my soldering jobs were done the right way and at the right points on the board. I don't know what caused the VDD and the VDimm mod not to work. The only thing is, that I used a smaller wire for VDD and VDimm in comparison to what I used for VCore.
I'll post some pics of my mods in a minute ;)
OK, all new pics are on:
http://home.t-online.de/home/ingmark...20AN35N-Ultra/
If you find something strange on the pics, please tell me. I couldn't find the reason why the VDD and VDimm mod didn't want to work.:stick:
Just wanted to let y'all know that everything is working fine now. Made 2 big mistakes, when I first did the mods. Redid the mods, the right way this time, and they work fine now.:D Pictures in my Link in my posting above.
BIG THX again to Hell-Fire and AA666.:toast:
BUMP
Guess what board I have again? :D
Gonna go do vdimm and vdd mods to it again, see what happens.