Does anybody know of anywhere where i can find volt mods for the Gigabyte K8N Pro. Tis my new toy to play with till the proper boards start being released...
Jst want the normal ones...Vdimm mod and the such.
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Does anybody know of anywhere where i can find volt mods for the Gigabyte K8N Pro. Tis my new toy to play with till the proper boards start being released...
Jst want the normal ones...Vdimm mod and the such.
Hi,
Vcore is 100K Vr between pin 10 on ISL66569CB & ground check here A64 Vcore Mods.
Vmen is 1K Vr between R405 & GND look at picture.
http://www.tbreak.com/nasser/K8N-Vddr.jpg
I want to ask you about Clockgen for Gigabyte K8N, where can i find it... Thanks
Clockgen is only available for the Via chipset
Where do you check the vcore and vdimm voltage at does it show correctly in bios or something with the Gigabyte K8N Pro??
bios deffo doesn't show it, shows none, just , hmm not been in there in a while, says its OK or something for a few voltages. NOt tried mbm5 or anything yet, will do that soon, but gigabyte easytune shows vcore, 3.3 and 12v lines. Suckage :(
Don't suppose anyone who has thsi mobo can get some detailed pics of the mod, i'm a complete newb at vmodding, so as much help as poss will deffo help me. need vcore and vdimm mods, and where to measure them, cheers in advance to anyone that can help. opps running this board ain't he? so it should be good with decent voltages, i would hope.
Bump!
i need more input!
where to find the measure points?
Thanks :)
Vcore shold be one of the legs (maybe right leg, looking at it with the legs down) of any of the main cpu powersupply transistors. Vdimm should be one of the legs of a transistor near the Vdimm regulator. Just look for a voltage in the range it should be and moves with your adjustments. If you feel uncomfortable doing this wait for someone with specifics.
Is it true that the GA-K8NNXP (That's where you guys talk about isn't it!!) only goes to 250fsb?
That's what I heard from some other people...sounds abit strange to me actually:confused:
Here is my k8nnxp doing 290FSB no mods...
Thx m8...it already scared me abit because i'm expecting this board at the end of this week.
I got the mobo in today..and did the voltmod the vcore and vmem...vcore you can read through Gigabyte windows utility.
But i still don't know where to read vmem from...and i been my whole board around with a multi..checking everything.
well if soemone will remind me,i have i will take full detailed pics and where to measure all volatges from,since i have a fried board it will be coming down this weekend.i can show where to measure vcore.and vmem on the front of the board.
the mods are easy.
cheers bowman, that would be much appreciated, my soldering stuff arrived today, so some practice on other boards and i'm wanting to try out the mods on this. Could i persaude you to do it in newbs style with whatever advice you can give.
I was gonna ask in a new thread, of the 5900 mod's one. Do guys find proper white papers on the cards mobo's, or is it jsut a case of a experienced, maybe electronic's using guy working out what will control what. then getting white papers on the particular IC then think controls whatever and working it out. Mainly as i'd like to get to a point where i can work stuff out on my own, as i always like to feel that sense of achievement, and also cos my 5900 inno3d cheapo card is nowt like the one in that 5900 thread :p
Hi guys, I have a K8NNXP and the layout is a little different in the vmem area. Has anybody done the vmem mod for this board? Is it still resistor R405 and if so, which one is R405? How does this vmod work, are we just taking the FB/Sense pin of the nearby winbond chip with a VR to ground?
I got it, the vmem mod on the k8nnxp is basically the same. There is also a mosfet in front of the ATX connector where you can measure the ddr voltage. I'll post a picture showing the measure point later today...
Great m8...keep us updated, because i couldn't find it.;)
I just did the memory vmodd for my K8N-Pro and the max voltage I get is 3.10v seems kinda low and my 3.3v line is at 3.45v, also I'm using the 1k vr.
My 3.3v rail is at 3.6v in mbm5 (3.7v measured at the atx) and I can only get 3.37v ddr max... I was hoping for ~3.5v like my previous A64 boards.
Here's the mem mod for the k8nnxp.
I just have this sick feeling that having a high 3.3v line will kill the mobo, I had mine at 3.55 before and my rig got all unstable shut off and never turned back on. And also a freind of mine had the same problem with his shuttle not for sure if it was the 3.3v line being high but it makes me wonder. Both where Nforce3 mobo's.
Short, do you which pin is for the vcore modd on the K8N-Pro? Any pics anyway? I've seen the modd but the pics where alot fuzzy.
The vcore mod is pin 10.
This OVP at 2.1v vcore is driving me nuts.
The pdf for the vreg is here it looks like it has both overvoltage and overcurrent protection...
edit: what about a VR between pin 1 and 2? has anybody tried that?
Thanks for the clearer pic Short.:toast:
Should the vr be set at 100k ohms for start up with the vcore modd? Just don't wanna smoke something.
I think a 100k VR is overkill for vcore. I used 2 25K pot's. If you go too high (~2.1v) the board will shut down, so you're OK provided you have good cooling. Actually mine overvolts a bit under load so I can only go to a max of 2.00v idle, which gives around 2.08v under load.
To answer your original question, yes, set it to the maximum resistance (100K).
Thanks alot Shortcircuit, ya I have great cooling so thats not a problem. I think I have a good chip here too does 245 with only 1.55vcore.
I have a small problem I hope someone has a answer to, I'm having a problem getting my memory voltage over 3.10v I did the vmodd for the mobo and also did the 3.3v line vmodd for the psu but my 3.3v line is already at 3.51v and I still can't get over 3.10v for my ram any ideas. And I really don't want my 3.3v line at 4.00v so I can get 3.20 to my ram cause I don't think the mobo will like that much,lol.
BUMP
Like I said earlier, this seems to be a limitation of the mobo. The difference between the 3.3v rail and max vddr seems to be around 0.3v. I think the only way to increase it further is by increasing the 3.3v rail. I'm gonna try 3.7-3.8v tonight and see what happens.
Maybe some crazy mofo could try lifting the VCC pin and powering the voltage regulator off the 5V rail, but I'm not about to try it.
ok here is ther mod i had on mine
you can see the overall mod and model of board in pic
memory mod
vcore mod...
Sorry bro I guess I didn't catch it when you said that but now I see it. Sorry.Quote:
Originally posted by shortcircuit
Like I said earlier
Bowman, nice pics bro.
Guys i did the mod as per the pic and i think i was successfull but here is my problem...
The mobo shuts down after like 2secs and only the orange light is on ... when i check the vddr i shows me 2.8 defult from 2.6 ...so i take it the mod went pritty good.... but y on earth is my mobo shutting down always ... after removing the ground from the mod...the mobo comes back on....but no mod :(... this shutting thing also happens if i take the 3.3 above 3.69v and by default the voltage is already @ 3.55v...pls share any info u got with me... cause this mobo is a very nice one... i am getting some great results with it
I had mine that high(3.60v) before to but it shut down and never turned back on. Killed the mobo so I haven't had the balls to go that high agian.
Does K8N have the same mod as K8NPro ??? Cause i can't find R 405...
Corrupt, did you kill yours with a high 3.3v rail? Mine has been running for a while at 3.6v+.
Benny, please post a close-up pic of the vdimm area. They might have labeled the resistors differently, but the general setup should be the same. All we are doing is taking the vsense/fb pin from the nearby winbond chip to ground with a VR.
James, maybe you should try another ground? I think I am using the mounting hole in nearby corner of the mobo for ground.
I think thats what killed it never know for sure though, it was the only thing done to the mobo everthing else was still stock, was trying to get alittle more voltage from the memory without vmodding it at the time and as soon as I turned it up that high it was fine but it started getting unstable then it shut down and never posted again. So I don't know only thing I could think of doing it and kinda been scared to do it again to find out,lol.
did anyone find the measure point for vcore mod?
Just did the vdimm mod but it's not working right ??
Used a 1K VR to power fan header ground. Set the VR for 1K OHMS set vdimm in BIOS to normal...and started lowering the resistance...measureing at the MOSFET in the picture..after turning the POT for ever the max I get 2.7v???
Am I missing some thing here :) Should I have set the BIOS mem to +3 and went from there ???
bias_hjorth, you can measure vcore from the mosfets behind the cpu. It's the same leg of the mosfet that is used for measuring vddr. You should probably solder a wire onto the leg and measure from that. There are a lot of components and sticking a multimeter probe back there is dangerous - Marquzz fried his board measuring it.
Blue078, try using a different ground. Fan header grounds are not always a true ground. I used one of the mobo mounting holes as a ground.
thx I´ll probaly going to do just that. It much easier anyway. :-)
Thanks shortcircuit that does make since..will give it a try.
Dig your new avitar :)
does the vdimm mod require soldering unlike the vcore in which u can use grabbers - right?
Runner I dont see how you could do it any other way but solder thie is nothing to grab on the vdimm mod..
But it's realy not as diffacult as it seems :)
the Gigabyte K8NNXP looks like a verry nice oc board. How is the onboard audio ? And is there no NB v-Mod jet ?
All those mosfets gives me different values.Quote:
Originally posted by shortcircuit
bias_hjorth, you can measure vcore from the mosfets behind the cpu. It's the same leg of the mosfet that is used for measuring vddr. You should probably solder a wire onto the leg and measure from that. There are a lot of components and sticking a multimeter probe back there is dangerous - Marquzz fried his board measuring it.
Blue078, try using a different ground. Fan header grounds are not always a true ground. I used one of the mobo mounting holes as a ground.
Where is the real measure point for the Vcore?? and where can I find the vNB?
This should be vcore .. and I suspect that the other voltage you have there is chipset, although it may be VAGP..
The yellow arrow is pointing to the MOSFET leg that corisponds to vcore adjustments..this is were I have been measureing from on my K8N Pro .
CAn some of you guy's post your oc results with this board ? i'm verry interested.
Pifast results
Sandra mem benchmark
I have a slightly better pifast saved at home. I've been gaming on the system lately and not benching... haven't even modded my 9800XT yet. Onboard NIC and sound works above 300fsb :D
I don't think there is any need for a NB voltmod. The board does over 300fsb stock. I haven't even removed the NB HSF and it barely gets warm.
Nice OC :toast:Quote:
Originally posted by shortcircuit
Pifast results
Sandra mem benchmark
I have a slightly better pifast saved at home. I've been gaming on the system lately and not benching... haven't even modded my 9800XT yet. Onboard NIC and sound works above 300fsb :D
I don't think there is any need for a NB voltmod. The board does over 300fsb stock. I haven't even removed the NB HSF and it barely gets warm.
How much Vdimm could you set with your mod?
With the 3.3v rail around 3.8v I can get 3.4v on the memory.
This board seems to be very resiliant to having a high 3.3v rail.
The other day I was moving a fan around while the system was on. The spinning fan blades hit the VR for my 3.3v rail voltmod, and cranked it all the way up. The system shut down but I didn't yet realize what happened. Turned it back on and got a blank screen... pulled out my multimeter and checked the 3.3v rail, it was 4.6v !! I turned it back down and everything still works fine.
How much can I set when de 3.3v rail is NOT modded? Mine is 3.34v...Quote:
Originally posted by shortcircuit
With the 3.3v rail around 3.8v I can get 3.4v on the memory.
This board seems to be very resiliant to having a high 3.3v rail.
The other day I was moving a fan around while the system was on. The spinning fan blades hit the VR for my 3.3v rail voltmod, and cranked it all the way up. The system shut down but I didn't yet realize what happened. Turned it back on and got a blank screen... pulled out my multimeter and checked the 3.3v rail, it was 4.6v !! I turned it back down and everything still works fine.
My goal is to reach 3.2v/3.3v on my vdimm.
Is there a tutorial to mod the 3.3v rail?
Weewhhhh :eek: that was a close one.. must have some kinda overvolt protection ?Quote:
Originally posted by shortcircuit
With the 3.3v rail around 3.8v I can get 3.4v on the memory.
This board seems to be very resiliant to having a high 3.3v rail.
The other day I was moving a fan around while the system was on. The spinning fan blades hit the VR for my 3.3v rail voltmod, and cranked it all the way up. The system shut down but I didn't yet realize what happened. Turned it back on and got a blank screen... pulled out my multimeter and checked the 3.3v rail, it was 4.6v !! I turned it back down and everything still works fine.
You need to mod the PSU to increase the 3.3v rail. Check the Xtreme Hardware Mods section. If you're lucky you will be able to do it without opening up the PSU.Quote:
Originally posted by kakaroto
How much can I set when de 3.3v rail is NOT modded? Mine is 3.34v...
My goal is to reach 3.2v/3.3v on my vdimm.
Is there a tutorial to mod the 3.3v rail?
I don't think I ever ran this motherboard with a PSU that was not modded. But if you look back in this thread, corrupt was hitting 3.0v - 3.1v when his 3.3v rail was at 3.45v. So I think that with an unmodded PSU you will be lucky to hit 3.0v vdimm.
Ok I measured my 3.3v rail and the multimeter read 3.47v so mod is needed i guess.Quote:
Originally posted by shortcircuit
You need to mod the PSU to increase the 3.3v rail. Check the Xtreme Hardware Mods section. If you're lucky you will be able to do it without opening up the PSU.
I don't think I ever ran this motherboard with a PSU that was not modded. But if you look back in this thread, corrupt was hitting 3.0v - 3.1v when his 3.3v rail was at 3.45v. So I think that with an unmodded PSU you will be lucky to hit 3.0v vdimm.
Is this the mod you used?
Basically, yes, although I'm using a 5K VR. For the fixed resistor I don't remember but I think it was a bit higher like 25-30 ohm.
Instead of rasing the 3.3V rail, is it possible to feed the mosfet with 5V directly?
BTW, I did the vmem-mod on a K8N, a bit diffrent layout than most of the other GigaByte NF3-boards. I did also solder directly on one of the chip legs instead of using the unused solderjoint. Here is a pic of it, 1.4MB.
What is your Vmem after this mod?Quote:
Originally posted by Kamerat
Instead of rasing the 3.3V rail, is it possible to feed the mosfet with 5V directly?
BTW, I did the vmem-mod on a K8N, a bit diffrent layout than most of the other GigaByte NF3-boards. I did also solder directly on one of the chip legs instead of using the unused solderjoint. Here is a pic of it, 1.4MB.
With the other mod a maximum can reach 3.2v with 3.65v rail.
hm, is it the same mods for Gigabyte K8N-Pro and Non-Pro ?
It's the same mod, but I soldered directly to the chips leg because it was easier at the K8N. My vmem is about 2,95V, think my 3,3V is low and have to mod it.Quote:
Originally posted by kakaroto
What is your Vmem after this mod?
With the other mod a maximum can reach 3.2v with 3.65v rail.
i am about to do the vmem mod on my k8n, but i cant see clearly from your picture which pin it is that you soldered the VR onto to chipQuote:
Originally posted by Kamerat
Instead of rasing the 3.3V rail, is it possible to feed the mosfet with 5V directly?
BTW, I did the vmem-mod on a K8N, a bit diffrent layout than most of the other GigaByte NF3-boards. I did also solder directly on one of the chip legs instead of using the unused solderjoint. Here is a pic of it, 1.4MB.
is it pin 18 or 19?
thx
It's the second pin from left as seen here in yellow.Quote:
Originally posted by boyin
i am about to do the vmem mod on my k8n, but i cant see clearly from your picture which pin it is that you soldered the VR onto to chip
is it pin 18 or 19?
thx
regarding vcore mod and resistor; would be safe to start with a trimmer of 50 KOhms instead of 100 KOhms ?
Kamerat,Quote:
Thanks.
Can you supply the source of this particular mod and the vr/resistor value?
I'm the source of this mod, but i saw macci did almost the same mod later on his own site. It's the same same chip used on K8NXP and K8N Pro, just another placement and solderpoint (if you wish, you can solder directly on the pin on the K8NXP and K8N Pro too). I use a 1k pot for this mod myself, same value that people use on the K8NXP and K8N Pro.Quote:
Originally posted by G H Z
Kamerat,
Thanks.
Can you supply the source of this particular mod and the vr/resistor value?
Muchos gracias:p:
Have you managed any higher voltages with this mod yet Kamerat?
I did the other mod and 3.0v was the best I could get using any BIOS setting. And before I could clockGen to 237Fsb with +0.3 setting in BIOS @ 2.96v, now it bluescreens at 235Fsb. So it's worse.
Something is not right with this mod and I have done alot of these before.
How do you know it is the "same" mod, cause if it is not then I will try it your way and see if it works any better. My 3.3 is @ 3.39v now.
The voltage drop from the 3,3 V rail to the memory maximum memory voltage depends on how much current the memory pulls. This depends on the number and type of the memory-chips that are used. I used 3,95 V on my 3,3 V rail to get 3,55 V on my memory, 1x Geil PC3700 256MB (singlesided). When I installed another stick of the same memory the voltage dropped to 3,49V.
Well I don't think I am going to try 3.9v on the 3.3 as I have heard that has killed alot of A64's
Maybe there is more than one circut feeding the memory or some sort of OVP. Thats why I was curious if your mod was any different than the un-used pin pad solder point.
Got my PCP&C 425W providing 3.3v = 3.58v
Haven't modded the 12v/5v yet, waiting for replacement mobo to ship.
I did the K8N vdimm mod on the little yellow spot on kamerat's picture, and it doing great :) thx kamerat aka Daniel, my name brother ;)
Hmm, stupid question, but what about VTT? Does that automatically adjust to 1/2 of Vdimm or what...?
Thanks
Also, is there a WORKING AGP/PCI for this mobo? How did you get upto 290FSB without a lock?!? :confused:
Hi all :)
I've just bought a K8NNXP mobo. 2 days ago it did 288FSB with no mods (288*8 memo@230). Then I set 250x10 (memo@208) for every day use until I do vcore+vdimm mod and it worked stable for 1 day, but now I can't pass more than 230x10 :confused: (the HTT do 250 as before, but the cpu don't pass 2'3Ghz 1.7v)
I've seen that if you rise the HTT with Clockgen, the program only shows PCI speed increase, but if you close it an restart clockgen, it shows an AGP increse (like 83Mhz). Is this normal? Then i need to decrease agp speed to 66Mhz and works correctly.
Wich bios are you using? Any special config on it? :( Why first did 288Mhz "stable", and now can't make 250HTT or 2'3Ghz cpu? I've checked everything in the bios..
Thanks all :)
PD: Sorry for that bad english :P
PPD: A64 3200+, Gb K8NNXP, Geil 433 ultra (did 260 2-2-2@3'3V on the dfi infinity), prommy II cooled, no mods yet.
Edit**
This mobo is crazy :stick: now i'm running @ 280*8 1.6v ... fsb problems seems to be solved, but still freezes @ more than 2'33Ghz (1'74v).
try ldt 2x... use bootup at 201mhz APG 67mhz .. then use clockgen --- it now shows a working PCI and AGP lock.. allthough I still have doubts if the PCI lock is really working!..
I'm already with LDT 2X :( PCI Lock is not working in any NF3 150 (true?)
Hei! Problem solved :)
"use bootup at 201mhz APG 67mhz .. then use clockgen "
it worked :) Thanx! now 2'51Ghz HTT 283 Memo@232 (time to do some mods)
What should I do to get Higher HTT? @290 system freezes. I'm working on a Vcore + Vdimm mod and posible PSU mod for +3'6V line, but this won't improve an higher htt, no?
could be the non excisting PCI lock I am thinking about,.. dunno know what it else could be :)
edit: allthough to low vdimm could be an issue..
Well, Vcore + Vdimm mods done :) Now does 2'7Ghz FSB280 1:1 cas 3-4-4 (adata pc4000..). I would like the VIO 3'3V mod but it doesn't run :confused:
I set a 10K vr between Slim orange 3'3Vsens and a black wire(ground) but does nothing :confused: I set 9k,8k... and any change to 3'3 line (at last with tester). Any ideas?
did you follow the vmod guide in here?
Yes I did.. but i have a question.. If i hadn't the ground thin wire and i used a normal ground, is the same? Or should I made a different operation? I've read something about "split" but i'm not really sure about what's that...
I've done the mod like if i had that thin black ground wire.
PD: You know if that mobo reads wrong the cpu temperature? I'm getting really high temps (-2ºC full, -25º idle @ CPU, but -40º, -60ºC on the freezer, and it's making right contact i guess...).
cant say cause I dont know what cooling you are using...
you should take the thin orange sense wire and cut it.. put a 10k VR on the cord from the PSU and direct it to one of the black grounds (in the center) in the ATX connector.
Ups sorry :P Prometeia Mach II with no mods. I've done the mod like you say...
You mean, cut the black ground and conect the cord coming from the psu (of the black one) to the center leg of the pot? This is what i've done. (and the thin orange coming from psu to the other leg of the resistor).Quote:
and direct it to one of the black grounds (in the center) in the ATX connector.
Edit* Finally got it, but after read "So many A64 deaths " post, i've unMod it again xD Don't wanna kill my baby...
Hi guys, how can I find a ground point using the multimeter? I jus nedd to find a point w/ no voltage on it?
well kinda a hard to tell.... Look in the vmod section.. all answers are there :D
What about VDIMM + VTT (Vbt) for K8NS?
I didnt understand yet where is the vcore read point on the k8ns ultra.Thanks in advance :)
:woot: Thanks to all who posted there knowledge and pictures of the Gigabyte MB mods. I just finished up VCORE & VDIMM mods on my GA-K8NS Pro. Now hopefully my chipset block will be here tomarrow and I can finish up
water cooling setup.
yeah this was what i needed - damn seems i'm really late with my "new" gigabyte k8nxp-9 ^^ now i can measure vdimm and compare with sandra...worx fine reading vdimm with sandra, not bad...
my modded booster working fine in slot 4 and my hyperx rock stable in slot 1&2 - time for prometeia action -.-
I need vcore and chipset voltmods, give me link please :)
I really want this mod. Help please.
Does anybody else have early memtest (windows version) errors when using wire to connect 3.3V directly to dimm cap? I have verified that the OCZ PC3200 Gold (BH5) is getting right voltage 3.26V (3.31V line dips down due to mod).
Memtest shows errors regardless which timings, and how high PSU 3.3V rail is set. Only way I found to eliminate problem is to lower Mhz down to 150! But, without the bypass, the 3.3V PSU mod (ex 3.5V,3.6V) makes little difference on Vdimm.
Max I went up to is 250Mhz for suicide shot, but 240 worked even in 3DMark2001 despite odd memtest errors. Antec PSU OC protection kick-in at ~3.75 so dont want to go borderline. Perhaps its just easier to use OCZ DDR BOOSTER (unless all 4 Dimm filled).
Id like to know how safe this mod is, the vdimm mod in the link below to get 3.3 volts on the ram. Will I blow a capacitor or something?
http://www.rhcf.com/sis-bin/ultimate...1;t=000006;p=0
My old scores... (~december 2005)
GB K8NSNXP (754) + mem: Hynix D5 & BOX cooling <lol>
3x512 -> http://img69.imageshack.us/img69/421/2253nm.png
http://img70.imageshack.us/img70/5598/2307ul.png
2x512 -> http://img380.imageshack.us/img380/8523/15313ah.png
http://img448.imageshack.us/img448/3209/3607ha.png
max HTT
http://img354.imageshack.us/img354/1355/3655ri.png
HT 1x - 270HTT
HT 2x - 270HTT
HT 3x - 365HTT
HT 4x - 263HTT
HT 5x - 210HTT
I need HT 2,5...
How i on HT 2,5 or other method for more stable HTT... ??
...soRRy 4 my eng :p:
If I use 1k, what voltage i will get?Quote:
Originally Posted by shortcircuit