Whos got one?
Please post up high-detail pics of the rear of the card and lets get things moving :D
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Whos got one?
Please post up high-detail pics of the rear of the card and lets get things moving :D
vGPU mod is almost identical to G92GT/GTS.
Attachment 75648
GDDR3 vDD (vMEM) + vDDQ are a bit trickier as they are controlled by the same 3-way buck controller. The problem is I can't tell which regulator feedback pin is for vDD and which for vDDQ just by looking at the pics as I don't have the card...
:|
Attachment 75649
First, I would need someone to measure the output voltages of those Delta HAHE1040 chokes on the front side. One should be ~2.00v, the other under 1.5v.
hopefully I can find a 500k so i can test it on mine!:)
do you think a 1k will work on this card as well?
*if* 500 Ohm is fine, 1K ohm will be fine too, but you will have a little less accuracy with voltage setting.
K404,
What's with the "if"? ;)
I did have the necessary measurements at hand before scribbling the "500Ω" into the pic...
Sorry- I was responding to the "preliminary" :)
absolutely no offence meant :D
Works no problem, indeed just like the 8800gts g92 due to the same primarion controller chip. used a 1k tuned down initially to 500 ohm. I was in a hurry and didn't measure the resistance at the end. @ 1.389 idle, was good for 891/2228/1235. Tried up to 1.45 idle - 900 MHz core is still not stable under water. I need to try a remount of my blocks though (swiftech mcw-60), I forgot to clean the old TIM off:rofl: it was late.
My pictures of the mod are camera-phone terrible. if anyone wans torture I can upload :D.
@largon, delta chokes read 2.02V top, and 2.10V bottom. hope this helps, I can take any other readings tonight if you need them :) also, the components to the right of the prim' chip look a little different... thinking towards ocp, any ideas?
here a quick 3dmark, 115 pcie. stock ram, mild overclock otherwise.
Edit: oops, got cut off. ram @800MHz, 790i Ultra
SergeRY
Those voltages make perfect sense, thanks. :)
Dunno what I was thinking when I said the other (vDDQ) should be <1.5v...
:rolleyes: @ me
I doubt there's need for an OCP mod as the GTS with *just* 3 phases doesn't need it even at 900/2400/DDR-2200, those 4 phases on GTX should be enough for pretty much anything. :up:
K404,
Heh, I was just kidding.
:)
np, glad to help. not TOO far off :DQuote:
Originally Posted by largon
as far as ocp: I set vgpu while at bios screen to 1.4(?) it jumped to 1.505 idle in windows. this was enough for extreme instability. crashing withing 5 seconds of rivatuner. so there may still be a need if higher voltages are needed. Dunno though, maybe the 4th phase will make it unnecessary when going to colder temps (enough voltage to get really crazy without ocp removed).
just my thoughts
-serge
For 24/7 910/2220/1260
1.38V
http://shrani.si/t/1z/U9/cGW9X7V/snap2.jpg
http://shrani.si/t/4/bg/1WbGLdNU/dsc01200.jpg http://shrani.si/t/p/tx/2oqXZ5bv/dsc01206.jpg
http://shrani.si/t/Z/dh/4tjBh7Rj/dsc01202.jpg http://shrani.si/t/1r/BZ/3HJ5NZok/dsc01209.jpg
http://shrani.si/t/v/4D/1h0TPjqA/dsc01205.jpg http://shrani.si/t/3t/jy/2nteatwO/dsc01211.jpg
I still testing for benchmark...
is the 1.38V for idle or load? :)
910MHz is nice!
where are the measuring points on the card?
Doesn't seem worth it to me :( I can bench @ 865 anyway?
Quote:
Originally Posted by kontrazeus
Hy everyone, same question here where can we read the GPU voltage ??
thxs
http://shrani.si/t/2t/Eu/4DFq8Vki/image07.jpgQuote:
Originally Posted by kontrazeus
lol, thanks, my photo capabilities are severely limited ;)Quote:
Originally Posted by cole2109
Quote:
Originally Posted by SergeRY
:rofl: of course, 4 phases = 4 resistors needed, im an idiot :rofl: anyone point me in the direction of figuring out the values?Quote:
Originally Posted by largon
improved 3dmark:
http://www.xtremesystems.org/forums/...1&d=1207521394
hi guys just wondering what waterblocks fit the 9800GTX?
most. swiftech mcw-60, dtek I'm sure, and many others.Quote:
Originally Posted by mieller
here is a photo of my vmod, complete with easy disconnect on ground.
when i read voltage at idle and load
i can read 1.21v and 1.228v
is this correct ??
I can see here than you put these setting at 1.38v :)
i think there is something wrong
i read from other resistanse 1.235 v
what's wrong with this value and where is exactly the measuring point
before i solder anything ;)
Quote:
Originally Posted by cole2109
I read 1.208V idle from the first resistor(?) to the top left of the GPU(backside of card, see pic). I measure from the right side of the resistor.Quote:
Originally Posted by Ertu
not sure why that is, other than a load, the voltage is the same for me. measure from the same point, and with the same ground every time.Quote:
Originally Posted by Ertu
Would someone be kind enough to measure resistance from the marked pads to ground on this pic:
http://www.xtremesystems.org/forums/...9&d=1207145797
How to read VGPU voltage for this babe?
^
See post #15.
ok gonna volt mod my 9800gtx's, iv never volt modded b4 but this thread is helping, can somebody plz post some more pics....
This correct guys?
http://i146.photobucket.com/albums/r...9/untitled.jpg
That's exactly like the pic. The other point doesn't have to be the screw, red dot to any ground will do.
Quote:
Originally Posted by largon
Cheers mate .... Also can u be so kind to piont out the read piont to me plz.....
Easy vGPU measurement points can be found in the pic in post #15. There's 2 rows of surface mount ceramic caps behind the GPU. Each cap has two tin ends of which one is a vGPU measuring point (the other being ground).
A: 659ΩQuote:
Originally Posted by largon
B: 7.5kΩ
C: 620Ω
Suur-kiitos Xargo:lle!
I have now 3x GeForce 9800 GTX (Thanks to Gainward!!)
Going to voltmod all of them to cool with Dice.
I run already some 3-way SLI benchmarks on Stockcooling without Voltmod:
http://www.hwbot.org/result.do?resultId=724049
525Ω Poti -> 13,0Ω total -> 1,24 Volt
Ok I am blind, can some one post pic with two spots for VGPU measurement, just two spots. Thanks in advance.
From post 15:
http://shrani.si/f/2t/Eu/4DFq8Vki/image07.jpg
One side of each of those SMC's is GND, and the other side is vGPU.
Thanks ;)
So how much voltage is safe at stock air ?
Grab the voltage on a vertical resistor.
Some horizontal resitors do not have Voltage on system boot e.g.
I'm running 1,35V on air with 2x 80mm-Fans.
Mount a vacuum cleaner at the back and you get better Temps approx. -5 to -10 degree Celsius less.
Or put the Stockfan to 100% with RivaTuner: 1,35V no problem.
Going thru the threads or volt modding.. does anyone have a volt mod for the memory yet? inc. guide w/pics?
thanks in advance!
Anyone happen to bump into a practical vDDQ (~2.00v) measuring point?
The Delta inductor on the frontside is a bit inconvenient... I can't find one because I don't have the card but I need the point for making the vDDQ mod guide.
bump to keep this thread up, I'm going to try this out next week ;)
Shamino told me that there is a VMem-Mod somewhere at VR-Zone, but I did not found it until now.
So anyone can tell what was the final resistance for 1.35-1.38v?
Just got me this card, got to wait till mcw60 comes back in stock on newegg..
ETA 4/30
:D
Any progress on vmem?
thanks for the mod!
running 870/1200/2000 on stock fanspeed 100%mod
17,600 3dmark06 on q6600@3.8ghz
should have my ek waterblock in 2-3days!
il let you guys know when i hit 1ghz stable ;)
**not scared!**
wen i connect the 500ohm resistor does the screw start from the left position so i turn it clockwise to increase voltage or does the screw start from the middle postion, turn clock wise to increae and anti clock wise to decrease the voltage.
http://i146.photobucket.com/albums/r...i379/screw.jpg
I hope that makes sense guys. :confused:
Am so noob never done this kinda mod b4, just want to be clear dont want to kill anything.
On the pots I use, clockwise is increase voltage (lower resistance).
Time to break out the multimeter mate..
Never-ever volt mod if you don't have a multimeter.
so hows about this vmem mod?
Sorry, seems I forgot to post memory vDD and vDDQ mods! :p:
Caution, these mods are untested.
Here's vDD (= vMEM):
Attachment 77867
And vDDQ (= "the other vMEM"):
Attachment 77868
Measuring points:
Attachment 77869
PS. I know there are easier vDD (dunno about vDDQ?) measuring points on the backside but it's summer and I'm too lazy to draw the diagram. :p:
Kyllд!
Is it summer already?
Anyway, great job, let's see someone getting results with this... I'm still waiting for my waterblock.
Question: how do we adjust vDDQ? Just bump it about 0.1v and see what happens?
:cool:
vcore is 500kΩ?
jackies,
0.1V vDDQ increase should be safe and give a clue if adjusting it yields something.
:)
fafoylis,
500Ω VR, not 500kΩ. The solder points should measure ~11Ω beofre soldering.
Check the resistance with a multimeter before soldering. Should be about 520 Ohms.Quote:
Originally Posted by n3wbi3
But soldered, the resistance is like 1/R_total = 1/R_vr + 1/R_orig. Should be about 13,5 Ohms.
Does anyone have the Galaxy 9800GTX? The previous 8800GT comes with a jumper to set voltages so I thought it's much easier if it also exist in the 9800GTX
Quote:
Originally Posted by largon
So this is no good? (see pic)
http://i146.photobucket.com/albums/r...Picture010.jpg
Go and messure the resistance with your multimeter!
Direction of turning and resulting resistance change depends on whichs legs on the VR you measure/use. If you have a VR like the one in my pic you could solder it on the card just like depicted. If you use those exact legs (legs #2 and #3) then turning clockwise would decrease resistance of the VR - thus increase vGPU voltage. But of course, I can't guarantee this applies to all VRs so you really should measure how your VR behaves when tuned.Quote:
Originally Posted by n3wbi3
edit1:
I believe I wouldn't go on a limb if I were to say that VR is a 500Ω, and not 500KΩ. But to be sure, you're going to have to measure it.Quote:
Originally Posted by n3wbi3
edit2:
I'm 99.9% sure it's 500Ω.
;)
ok guys soldered her all up, worked perfect without the resistor connected, connected the resistor up the system wouldnt boot, unsoldered the ground from the resistor she works fine .....
Any ideas guys why she wouldnt boot with the resistor hooked?
need to know: INCREASING THE OHMS = HIGHER OR LOWER VOLTAGES
Cheers guys
Most likely you have the VR soldered in the wrong way. In the pic you posted leg#3 is on far left, #2 is middle, etc. What legs did you use?
Decreasing resistance = voltage rises
From the picture we soldered the middle and the right leg... (of the top of my head)Quote:
Originally Posted by largon
Will that cause the system not to boot?
Before soldering the resistor was set to 11ohms.
You supposed to set it to 500Ω.
When I said the soldering points measure 11Ω before soldering I meant the points on the card. Setting the VR to 11Ω will cause over voltage protection to prevent the card from powering on.
The overall resistance (Card+VR) should be about 13 Ohms (13,5 and 500 Ohm) on your first boot up.
Then tune down the VR, but allways messure the voltage while changing the resistance!
The following pictures shows an alpha mod, just for trying. Usually my mods do not look like this :banana::banana:
Thanks Largon!:) So it didn't hit me until now, but I guess this means that 9800gtx should have good potential for mems OC since with previous g92 cards the complaint was vMem coupled to vDDQ. Interesting. What about coldbug problem though? anyone has info on fixing that?? :DQuote:
Originally Posted by largon
Got it buddy,Quote:
Originally Posted by largon
Card @ 11ohms
Resistor @ 500ohms
Then solder, and shes good to go :up:
http://i146.photobucket.com/albums/r...Picture011.jpg
Please report back about vDD and vDDQ mods.
I need to know they work 100%.
I'm still waiting for my waterblock here, been reading K4J52324QE datasheet - here's what cought my attention:
• Changed Voltage SPEC from C-die
: VDD/VDDQ : 2.0V + 0.1V of -BJ12 @ C-die => -BC12 : 1.8V + 0.1V @ E-die
: VDD/VDDQ : 2.0V + 0.1V of - BJ11 @ C-die => -BJ11: 1.9V + 0.1V @ E-die
Even though the datasheet doesn't even list BJ08 chips, it looks like they lowered the default voltage on their newer chips from 2v to 1.9v, on which they allow 0.1 overvoltage... So if nvidia is running the memory at 2.1v, it's like, totally maxxed out already?
What would you guys think, how much samsung gddr3 can take?
Don't wanna burn anything...
MOd up and working
http://i146.photobucket.com/albums/r...Picture019.jpg
http://i146.photobucket.com/albums/r.../18ksingle.jpg
just like to thank all u guys for all the help ...... THANKS :up:
largon, thanks for your work!
So, vGPU and vDDQ works perfectly, but vDD mod doesnt works... :shrug:
Here are vDD and vDDQ measuring points.
http://img140.imageshack.us/img140/1...measurekt1.jpg
It can be measured for each mem chip separately.
And what yours point for vDD measure? (If you too lazy, you can just write it to me, i think i`ll find it :scope:)
Oh, and how about reverse vDD and vDDQ mods?
I do VGPU, no memory, but I am not happy so much
http://spacemaster.sx-team.com/Sesij...e/DSCF0290.jpg
http://spacemaster.sx-team.com/Sesij...e/DSCF0292.jpg
http://spacemaster.sx-team.com/Sesij...e/DSCF0293.jpg
results http://www.sx-team.com/forum/index.php?showtopic=970
Droperidolum,
Good to hear vDDQ works.
Seeing any gain from tweaking vDDQ?
:)
But that issue with vDD puzzles me - are you absolutely sure it's not bad soldering/busted VR?
To further investigate, please measure the resistance-2-ground from the point marked as "C" in this pic. It should read close to 600Ω when the VR is connected properly. 620Ω without the VR. And see whether tuning the VR affects resistance between the point and ground.
Spacemaster,
How much did you gain from the mod?
Just finished this on my EVGA SSC, thanks Largon.
Couple interesting things though. The card does not tolerate high vcore at all. If I go above 1.350v loaded it will start artifacting. Maximum clocks were at 1.30v idle 1.33v load. It is 99% stable at 891/2214/2430, using Samsung 1.1ns spec timings (the 0.8ns are pretty loose and didn't yield higher memclock).
Really not much of an improvement from my 8800GTS-512. Maybe was expecting too much. LOL
Seeing how VDDQ and VDD are at 2.0 and 2.1 already I don't really think there would be any benefit from that mod so I probably won't do it.
Thanks again!
Hey VETDRMS, what kind of cooling you were using, water, air, phase?
What were your load temps??
I was using water with an MCW-60 and ram/power sinks from IandH. Loaded temps were 40C, idle 35C.Quote:
Originally Posted by jackies
After tearing down to install my 8800GTSs again I noticed the radiator was completely clogged with lint/cathair though :rolleyes:. The two 8800GTS-512s are running 40C loaded at 1.43v (loaded) and 864/2268/1144 so it probably would have been a couple C cooler.
OK, now I`ve check it up.
So, soldering is right and VR works good. I take 47K resistors for both vDD and vDDQ modz and set them to 20K.
с-to-ground = 615 Ohm, and with 20K - 596 Ohm. Lowering VR resistane c-to-ground lowering good, but vDD is still 2.10V (I measured it on delta coil as you recommend and on caps on my picture - its the same). Also i tried to solder to SMD cap(?) connected to this leg (between "C" and 11th leg) - the same result.
I suppose that a=FB1 (29th leg), b=FB2 (32nd), c=FB3 (11th). Thats right?
Not sure, but maybe FB2 is rigth leg? But i cannot measure "b" to ground resistance - cause its not constant in time.
P.S. 20KOhm for vDDQ mod is too low. On 20K there are already 2.07V. Setting 30K is about 2.05V, and 47K is 2.03V. Without VR it shows 2.02V.
So it will be reasonable to take a 50K resistor, for better control.
Also i want to try reverse mods - to lower vDD. Can you help me with legs? COMP1, COMP2 thats right? But there is no COMP3...
Droperidolum,
Would you measure the resistance from pads B and C to the vDD measuring point? And from pad A (in the same pic) to vDDQ measuring point.
:)
And you're right about 50kΩ VR being better.
:)
Btw,
FB3 (pad C) is pin #10.
I'll look into reverse mods too. (dammit, this would be so much quicker if I actually had the card...)
edit #89:
Reverse mod for vDDQ is done by connecting FB1-pin to a vDDQ measuring point through a VR ~50×the resistance of FB1-to-vDDQ measuring point. Tune down to decrease volts. Same principle for vDD - but ofcourse with the correct FB-pin (which is pending atm) and vDD measuring point.
A to vDDQ -560 OhmQuote:
Originally Posted by largon
B to vDD - very strange: DMM@2000Ohm shows 1100Ohm, DMM@20K shows 2.0 KOhm :shrug:
C to vDD - inconstant 0.67-3K
Oops! Thats right ;)Quote:
Originally Posted by largon
And when will you get it? :) This babe is really amazing!!! :up:Quote:
Originally Posted by largon
So, for lowering vDDQ I need ~30K VR ?Quote:
Originally Posted by largon
Very strange readings those...
:confused:
30kΩ for reverse vDDQ should work fine, higher ratings would only allow the max vDDQ to be closer to stock.
With 30kΩ you'd get ~1.95v.
Think I'll keep my G92GTS 512MB. I can't possibly sell it for enough cash that it would make sense to upgrade to GTX.
:)
Sorry, I was wrong when measured resistance between FB`s and my vDD / vDDQ points (on SMD). Now i measured on your points - on "Delta" coils.
A-vDDQ = 670 Ohm
B-vDD = 960 Ohm
C-vDD = 750 Ohm
How about vDD up/down modz? ;)
And one more thing. When set 1.57-1.58V on GPU and burning FurMark, system hangs up and then reboots when overclocked. It also reboots when 1.62+ even @stock clocks. Temps are about 60C warm_water_cooled.
I suppose OCP/OVP mods need for cold water bech... Could you help me please?
Hey Droperidolum!
So what was your max stable voltage?
And maximum freq?
Oh dear god, please make largon to answer me :worship:
please :hump:
`cause i cannot find max clock and cannot bench on cold water without ocp/ovp
Oops, I kinda forgot this thread existed.
OCP mod should be straight forward copy-cat of 8800GT/GTS/GS OCP. The caps aren't placed identically but they're there. You might want to confirm the resistance of the caps is similar to that in the linked guide. What comes to vDD mod - try it from pad B-to-ground (VR @ 20x the stock resistance).
btw, did you try the reverse mods (in post #73)?
Yeap, it existing and... dammit... i really glad to see u here again, man! ;)Quote:
Originally Posted by largon
So, these four brown caps around primarion is 740 Ohm each (OMG I just measured RESISTANCE of CAPACITORS :shocked: :rofl:).Quote:
Originally Posted by largon
4 caps = 4 phases, thats right?
http://img266.imageshack.us/img266/5720/ocp1bq0.png
So, i need some SMD resisrors for this mod, to solder then on top, but what nominal? :shrug: Cannot find datasheet... :(
Ok! Worx fine :)Quote:
Originally Posted by largon
I took 47K, so vDD becomes about 2.22V. Next time i`ll take 100K.
Yeap, but just vDDQ.Quote:
Originally Posted by largon
47K VR makes 1.96V as you said above. Need 100K, or maybe 80K.
Btw, lowering vDDQ lowers overclocking. :(
Thanks for your help!
So, memory on 1332 MHz, vDD=2.25V, vDDQ=2.05V. Absolutely no artefacts. Default timings.
3DM06 runs 1377 but with arts.
Mem is very hot, maybe i`ll try to make custom mem watercooling. :)
Tomorrow i go to worrrrk :( Benches and screens on monday evening.
3kΩ SMR / cap you circled would cripple OCP enough to prevent it from bugging you.
What is the trimmer resistance you're using for vdd ??? 47k or you changed it ???Quote:
Originally Posted by Droperidolum
Max resistance for lower vdd ? Right ??
Nice memory clocks ! :up:
largon, thank you very much for your help! I`ll try OCP later.
Stelios,
its little lower than 47K for 2.25V vDD, but i dont know how much exactly.Quote:
Originally Posted by Stelios
dont understand :shrug:Quote:
Originally Posted by Stelios
THX! Working for more ;)Quote:
Originally Posted by Stelios
Droperidolum preved!
Do you think you could measure the final resistance of your potentiometers?
I finally received my waterblock, but I dont have any trimpots, and it'd be easy for me just to use regular resistors, if I knew exact values.
Could you help out a russian brother?
:D
Zaranee spasibo!
http://i247.photobucket.com/albums/g...4ckies/ek1.jpg
Wow very very nice block,
What are your temps?
im sure if you use a regular resistor it'l be fine, but then you wont be able to go higher if you want to :), but very nice for 24/7
Yeah that's why I got the block, with stock cooling card was overheating even on windows desktop.
Like, it was hot to touch and produced characteristic smell.
Now temps are around 30, depending on whether I'm running AC or not.
I haven't yet benched it or anything, just putting this system together.
Maybe will post a worklog later on or something...
:pimp:
cool :)
im wondering.. is a 9800gtx better than a gts 512 clock for clock? cause when modded the gts can clock higher, and even higher with ln2 / dice
i know the gtx's mems are better, but thats about it
Sorry, have some problems with my Maximus Formula, so pictures and voltage-resistance table will be later if needed.
Bump. I am getting one of these soon and need to know the proper solder points for the memory voltage mods.
Pumping aswell - any updates?
What kind of single card 3dmark scores are you guys getting pre/post volt mod?
I need your help. Did the vgpu mod, tested it and it worked. I tried to arrange the wires but the one which was connected to that "dot", came off. First I thought that because of a pure soldering but no - that dot came off too :caution:
http://img372.imageshack.us/img372/9...1bq0od0.th.jpg
As I expected, my VGA still works but without any drivers installed. Actually, no drivers are recognizing that VGA no more.
Can anybody tell me, where that dot was originally connected and what it was connecting? It is not possible to replace that dot, therefore it needs some wireing if possible.
It might look like a bit offtopic but please do not kill my post this time. It is still part of voltmoding.
^ ow i hate when that happens
i'v done the core mod to my gtx+
same lackluster results as some gtx's only 900/2200 @1.35 on air
but one thing low low low idle/load temps 33c/52c in 68f room no case
load temps come down very fast also
hmm, the removed dot shouldnt be a problem.Quote:
Originally Posted by DonNiger
There might be a PCB via under it.
I have this card in my hands now, I see this missing dot and I see a part of PCB wire in the hole too.
Problem is, that this point is connected to GND and I don't think this is right..
pic of actual card:
http://www.hot.ee/temp5/DonNiger.JPG
I need to know some other points on pcb that is connected to this "dot" (Vgpu mod point)
It seems that this point in hole is another layer in pcb or smth, and if I connect this to mod point I have max Vgpu instantly.
Guys , does the info in this thread apply to GTX+ also ? Has anyone tried this on a + ?
OP - near 20k with a dual core is excellent .
:up:
Anything new about this?Quote:
Originally Posted by Droperidolum
Hi
can i take a 25k VR for the VDD mod? i dont have any 50/100k here.
is the VDDQ mod now useful or not?
Eiswolf93