I only had it set to 2.66v in the bios too, so might actually get 3.0v...
Better than 2.7, I guess.
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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...