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Anyone got these?
The VDD mod is either the chip among teh caps below the AGP slot (like Abit NF7) or the one below the dimm slot I guess..
I'll have high res pics when the board arrives.
http://www.shuttle.com/share/simages...ages/an35n.jpg
Only thing I dont really like is ATX header placement.. what were they thinking?? :rolleyes:
Bump.
Board should be here in a couple days, will check back then...
Noting where the ATX header and +12v header are, maybe the processor is driven from the +12 line and the ram from the +5v, if i'm lucky?
:)
have you got vdd,vdimm,vcore mod for this board?
i need it, thanks b4. :D
Hiya m8,
Sorry I didnt reply sooner, been buisy.. but im ill off work today (flue) so I have a little spare time.
The green bits should be measure points (you may have to poke about a bit)
And the Red chips "should" be the Vregs... if you can give me the part numbers ill start working on the mods.
Closeup pics of those spots will also help allot...
here is part number :
vcore :
RT9602
CS5C3C
vagp :
RT9203
CS5D95
vdd :
B4
TC
vdimm : LM431
i'll get them asap.. Will be late thurs/fri/sat .
AN35N, btw, my bad..
quote from amdforums.com. still looking for vdd and vcore mod :DQuote:
Originally posted by rth on 01-14-2004 at 07:30 AM
http://www.overclockers.com/tips954/
that is for a different shuttle board, but i looked at mine and it has identical circuitry for the mem voltage regulation. the 2.7v limit surprised me since everything else is so tweakable in the bios... oh well, void your warranty and dump some juice into those chips :biggrin:
http://www.overclockers.com/tips954/lm431_mod.jpg
(by the way, i don't take credit for your success or failure with this mod, somebody posted a couple months ago that it worked on their an35n) ;)
Seeing as the vdimm is a simple 2.2k -> gnd, does the board need a VDDQ mod?
yup, there no VDD option in Bios.
and i only can manage stable @ 225Mhz with default VDD.
still want fsb improvement :) :)
VDDQ, not VDD.
That aside, this one brick walls at 167.7fsb/208ram for me..... ???
Forgot to mention that apparently the scanner upstairs really sucks at scanning anything with depth to it... so no high res pics/scans :(
Wish that HP scanner I got for $10 hadnt died.. it did "3d" scans exceptionally well...
Running 1:1, the best I ever got that board was 214 FSB POST and 211 into Win2k, unstable.
It ran Win2k 208 stable, which matches your wall. Needs more Vdimm IMO...
vdimm doesnt seem to affect its top...
I've tried both my BH-6 sticks, both my TCC4 sticks, and mixes of the two, and in any setup if I losen the timings right off then it still tops at the same spot reguardless of the vdimm.
I even have a waterblock and 86w pelt on the nb right now.... still no good!
Hopefully you'll get some mods for it that work, else off to your brother ;)
Sorry it isn't shaping up well for you :(
No prob, i've got the Epox working a tad better after redoing my vdimm mod and forcefeeding it voltage like a choirboy :D
sorry for my bad, i don't know, what is VDDQ?
run 1:1 i can run fsb220 with my BH6 but loose timmings,
i really don't know why my BH6 can't run cl2225 @ >fsb200 1:1, but in my Soltek 75FRN2 my BH6 can run up to fsb220 1:1 cl2225.
now i'm running 1:1 fsb210 cl2,5 233 -> Apacer pc2700 chip Apacer.
VDDQ is the internal voltage of the memory chips.
I measured and got 1.5v on my ram (touch to one side of those small ceramic caps) on the AN35N at 2.56vdimm, didnt remember to test at 2.7.. and its all in peices now.. heh.
where is place to measure VDDQ?
can you give me the pic, thanks b4.
On or near the top of your sticks of ram (most ram.. my TCC4's have them on the back and stuff) are small ceramic capacitors. They're basically brownish peices of ceramic with a peice of metal on each end... they're tiny..
Touch a DMM to either side and it should say something near 1.25-1.5 at stock I think.. not overly sure, though.
there's a lot small capasitor near the top of my ram (BH6). all are small ceramic capacitors too.. *confused* :)
Any of the ones closest the top will do.
on BH-6 you should see a fat trace attached to them, too... mine do 8-)
EDIT
I killed the board by shutting it off... or so it seems.
No post, anyways... :stick:
Woohoo!
Dunno what I did, but i've got the bugger going now! ;)
Still measuring 1.5 off the ceramic caps at 2.7v, so it may not be the proper measurement location... gonna have to do more poking around.
Anywho, have the board 8x210 max post/240 max ram fsb post (asynch)/8x205 stable so far.
Only problem is I have to give the CPU thats on it right now to someone as its apparently not paid for... :rolleyes:
Oh well, at least I know it works now :banana:
Need to find a CPU to use for testing...
Which bugger, the epox or the shuttle?
Shuttle.
Time to throw some volts at it and see where I can go :D
Ok, so what do I need to do for the VDD mod? I'll slap on the VDIMM if i need it..
EDIT
Information I forgot and just did more poking...
- RT9302 is the one I have labeled as CS5871.. got the wrong string off it.
- The mosfet above the RT9302 is the vAGP mosfet. 1.55v.
- The left leg of the mosfet closest the first PCI slot and the back of the mosfet below it closest the AGP slot both register as 1.67v.
- Right leg of mosfet mentioned above shows 3.0v.
Search button is handy: http://www.xtremesystems.org/forums/...der=descending
EDIT
http://www.xtremesystems.org/forums/...819#post284819 Yup, very handy indeed! 1K to ground seems to be the way to go :)
Well, apparently thats not gonna work.
Tried "FB" (which reads as 11.84v on my DMM) and it didnt respond at all.... kept going and it eventually just locked up.
Im confused again.
EDIT
Tried the 2.2k -> ground memory mod, it maxed out at 2.9v :rolleyes:
it looks RT9203 in my board..Quote:
Originally posted by STEvil
- RT9302 is the one I have labeled as CS5871.. got the wrong string off it.
and nice to know that VDIMM is works well :banana:
I only had it set to 2.66v in the bios too, so might actually get 3.0v...
Better than 2.7, I guess.
Hmm, I just got the board and took some pics of it out of the box. Take a look at them here:
http://home.t-online.de/home/ingmark...20AN35N-Ultra/
I hope I'll be able to get the mods to work, if I need them. But first I'll see in a few moments how this thing does without mods, in comparison to my Abit NF7 Rev.2.0.:toast:
If you need some more pics, or just more detailed pics of some specific regions of the board, then let me know and I'll take some ;)
Well, well, well I updated my pics section and have now pics for VDimm mod, which need to be verified by other members who have more knowledge about vmods than me (Holst???).
Still same link as above ;)
I had a close look at the board and I couldn't figure out how the hell, they got these "above 1.85V" Vcore option to work. I know that the "RT9241B" regulates the Vcore upto 1.85V, but what's up with the voltages between 1.85 and 2V?
And, I think VDD and VAGP is controlled by the "RT9203" chip.
VDimm is clearly "LM431" and already documented!
I'd be very happy for some more help. I can take as much pics as you need! :toast:
I think the reason the mods i did didnt work correctly is because I didnt cut any traces, just went from an output to the sense point.. real bright :rolleyes:
Yes, try going from ground to sense, that may get around having to cut a trace or remove resistors.. same idea as on the NF7's.
Makes me want to try the 8rda+ with sense to ground and see if it would work better...
Greetings from ocforums, guys!
Vdd(chipset) works for me with 10k pot to 8pin of U20 chip. But rising to 1.8 does nothing, mobo stay unstable over 242FSB.
Current Vddq mod giving only 2.9, not so much for my hungry a-datas and im thinking about to short SK34 Schottky rectifier. Vddq should rise to 3...3.2V. Dont know that a good idea or not... what do u think guys? As you know latest 8rdaVcore can set Vddq to 2.8V and this work, but Shuttle not included this option in BIOS. Maybe this because Vbt is fixed, maybe not. Later ill check Vtt, imo at two babies near from DIMM2 and DIMM3 captions.
celemine1Gig could you please make a shot of these babies
No problemo amigo! If I understood you right, then I already had a photo of that section but deleted it yesterday. So time for new pics soon.
Could you post what you did exactly for the VDD and VDimm mod in the meantime?
:toast:
For Vddq I solder precise 10k pot between pins 8 and 2,3 of LM431. For Vdd(chipset) - another 10k pot between 8 pin of U20 and ground founded on nearest MOSFET Q23. Fix both pots and wires with thermal clue. To avoid damages i disconnect soldering iron before any soldering. Thats all.
Thx!
But are you sure that the VDD (nforce2 chipset voltage) mod worked?
I had a look at the datasheet of the chip (RT9203) and there is Pin 8 ("FB") and Pin 7 ("FBL") and I thought that one had to solder the potentiometer to pin 7, not 8. :confused:
VDDQ (VDimm) works above 2,9V???
Sure it work, i test it with voltmeter at the output of L1 coil (what near from C38). BIOS and MBM5 also shown rised voltage, but not so accurate. Maybe for me it useless because this voltage already had 1.725V before mod, it a bit higher than default 1.70V.
Dont forget to disconnect soldering iron unless you have low-voltage soldering station. IMO going more than 1.9 on any NB cooling better than stock, or more than 1.8 on stock cooling is a really bad idea if so.
RT9203 is a dual regulator, FB is for PWM otput and FBL is for linear otput. PWM otput connected to chipset PWM voltage circuit and linear going to AGP linear voltage circuit.
Yes Vddq is limited to 2.9V for current Vddq mod. Schottky SK34 rectifier (Q34) reduces voltage what coming to Drain input of Fairchilds MOSFET FDB6035AL (Q30) from 3.3 to 2.9.
Just chcecked Vtt(Vbt) voltage at pin 4 of RT9173 regulator:
Vddq -- Vtt
2.6 --- 1.28
2.7 --- 1.34
2.78 -- 1.38
2.9 --- 1.43
But my mobo with Vddq mod. Anyone who able to measure pls post results here.
The promised pics will be up soon. Sorry for the delay! Had to do a little work (fan controller) for my mate. Check my link from above in a few hours for new pics ;)
Edit: Pics are online!:toast:
thanks celemine1Gig :toast:
i see your babies marked as RT9173B, but my w/o B - RT9173
Hmm, what version of the board do you have! Mine's Rev.1.1. ;)
My is also 1.1. This letter is about nothing, just a bit different otput current.
I know, I know, I was just interested! :DQuote:
Originally posted by AA666
My is also 1.1. This letter is about nothing, just a bit different otput current.
Hmm, I'm really thinking about going back to my NF7 Rev.2.0 at the Moment! :stick: I had already planned to mod it fully, including new caps for the voltage regulation and cooling improvment of course. I don't know if I even should attempt to Vmod the Shuttle, in case tht I would sell it.
Hmm :rolleyes:
What bothers me most isn't the VDD Mod, but the VDimm mod which goes only as high as 2,9V. My BH-6 RAM needs definatel more volts.
So what do you think? Should I try and perhaps we find a solution to that problem and the board rocks, or should I go Abit again.:confused:
I think I need to sleep a few nights and think about that decision. Perhaps the Situation changes until then.
imo NF7 is better for ocing - more documented mods and (just first look on mobo) 3-phase CPU Voltage Regulator Module vs 2-phase on AN35. Also, some guys reached 260FSB on NF7, but for AN35 only 240(?), maybe this depends on NF7 popularity maybe not.
I think Vdimm >2.9V is not a huge problem, just short D24 diode and Vdimm limit will be 3.3V, but this also will rise default Vdimm voltage from 2.5V to ~3.0V(?). In this case we need another mod to smooth adjustment from 2.5 to 3.3V, maybe with on-board smd resistors replacement maybe not, who knows. NF7 already have Vdimm up 3.25(?) w/o this risky soldering on mobo.
Also i asked guys from Shuttle's support about to add 2.8V and fsb over 250 to bios (because this work from 8rdaVcore), but they answered strange things:
"Unfortunately this is limitation on the chipset and voltage design.
There is no way to change it on the bios level."
imo is better to sell AN35 and try NF7 for extreme ocing.
One major thing why I decided to get the shuttle was, that I had hoped it would have a better voltage regulation than the Abit and because one can read the CPUs internal diode temp with a little mod.
But now, I'm quite sure that I'll leave the Shuttle only installed until I have fully modded my NF7 Rev.2.0 which does 230 MHz FSB at default VDD, which is IMHO quite good.
Wish me luck and thx anyways. Perhaps a mate needs a new mobo and the shuttle would be useful.
IMHO, the shuttle guys just seem to be tooo lazy to really answer your question. Or someone who doesn't have a clue answered it. :D
I even had a very strange problem with the shuttle today. I could hear squeeking noising coming from the board, when I clocked my new mobile Barton to 2600 MHz, which seems to be too much for the board. VERY STRANGE!
Greets
Ingmar
P.S.: If you need more pics, just tell me. :toast:
Anyone tried shorting or bypassing the diode yet? I'm going to be swapping my 8rda+ for the Shuttle and want 3.2v+ on the ram.. my BH-6 needs it! ;)
Bad news guys.
Just lapped sb on my AN35NU, wash it (do it 3 times before), dry with wife's hair dryer and... they starts and freeze after 10 seconds. And not alive now. I bought it from newegg with rebate for just below 50$. Not so dramatically for family budget :rolleyes:
Planned to switch to also cheap NFII Ultra-AL, they have FSB up to 300, CPU to 2.0V, Vdimm 2.5-2.8V and Chipset up to 1.9V.
what'd you wash it for?
Just cleaning aftrer lappin SB and finnish NB to 1500gr.
Day before i swapped R178 and R180 for precise Vbt and it going more stable at 250FSB. But..
But here is a good news also - now i can safely short this diode and measure Vdimm :D :D :D
Perhaps either give it another wash again and hope it was only some left over piece that shorted something on the PCB, or you give it some time to dry because some could've been left under NB or SB.;) :toast: Hope you get it to work again.
BTW, I ordered the parts for the VMods yesterday, because I decided to mod this sucker till it dies. :D
AND A BIG THX here and now to you A666 for alle the Vmod advice you already gave. I would've been lost without your help.:toast:
No more washing lol
I dry it well within ~20h, what enough for other boards, but i see only black screen again. Good bye my blue friend :(
... and welcome red DFI Infinity :up:
So, just some words about my expirience with AN35N and high FSB:
1. Pure DDR500 and lappin NB+HS allows me 230FSB.
2. Small HS @SB helps me to jump from 230 to 240.
3. With Vbt correction i reached 246.
4. Vchipset mod is useless for me and produces harmful heat (on lapped NB). I think my Vchipset=1.725V stops me @246 FSB. When i started with infinity @250FSB with default 1.7V i start gettin about same BSODs as for Shuttle. Just reduced Vchipset to 1.6V and now primin for about a hour.
Also, on infinity i reached same CPU freq 2250 as for Shuttle with a bit lower voltage - 1.7V vs 1.775V. I see this two-phase CPU's VRM also needs some moddin, maybe just large capacitors.
Hope this help guys, good luck with Shuttle.
K i need a new mobo.Quote:
Originally posted by AA666
No more washing lol
I dry it well within ~20h, what enough for other boards, but i see only black screen again. Good bye my blue friend :(
... and welcome red DFI Infinity :up:
So, just some words about my expirience with AN35N and high FSB:
1. Pure DDR500 and lappin NB+HS allows me 230FSB.
2. Small HS @SB helps me to jump from 230 to 240.
3. With Vbt correction i reached 246.
4. Vchipset mod is useless for me and produces harmful heat (on lapped NB). I think my Vchipset=1.725V stops me @246 FSB. When i started with infinity @250FSB with default 1.7V i start gettin about same BSODs as for Shuttle. Just reduced Vchipset to 1.6V and now primin for about a hour.
Also, on infinity i reached same CPU freq 2250 as for Shuttle with a bit lower voltage - 1.7V vs 1.775V. I see this two-phase CPU's VRM also needs some moddin, maybe just large capacitors.
Hope this help guys, good luck with Shuttle.
I was thinking about a infinity but in a month there come a new rev out (can't wait that long).
This mobo is very cheap but lacks High Vdimm (modable to 2.9?) and VDD settings. Now the Vdd mod seems to be useless?
What fsb should i be looking at then (sync)?
this 240 is the highest i can find and I doubt it is very stable and requires good cooling.
If 220 is the max I might as well spend some more and get a higher fsb capable nf² mobo. (infinity 85€ )
I don't mind modding the board.
Tho I'm talking about the AN35NU not AN35N but I dont think there is a difference or is there?
This review got 233 easy.
http://www.tbreak.com/reviews/articl...5&pagenumber=3
Go for the infinity.
Even when in a month a new rev comes out ?
I found this (translated from dutch to english):
Droopy: I talked to the DFI ppl@CEBIT. Late arpil the new rev comes out and will have a higher Vcore and no more drooping vcore. More stable voltages (especialy on the lanparty) and some handy oc funtion the ppl are gonna love (could be plain salestalk)
They were kinda vague about the black screen thingy tho...
And i completely didny follow the dfi news except a few amazing fsb screens ... I find some disturbing problems about the infinity to...
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.