Mad scientist lab: NF7-S 4 phase CPU power supply mod

Hello!

Quite some time ago, while I was reading datasheet of HIP6301 CPU PWM voltage controler, I found out that it is possible to add fourth phase on the NF7 motherboard... Of course I wanted to to it! But there was a problem, I needen exactly same components as they are in other three phases on board, so I started searching for a dead NF7 board. And then I finaly got one after three months.

This board was source of components. I needed 2 MOSFETs, choke, HIP6601 chip and a few condensators and resistors.

Then I started "engineering". It took me almost 5 hours to make this mod. And now it is working. I havent tried it in my main rig with Barton, but it is running like a charm with Duron 750 in my test rig...

Unfortunately I don't have a digital camera, but I made few pictures with camera integrated in my cell phone. Quality is very bad... but it is better than nothing... I will borrow a camera from a friend of mine and make some better pictures... until then this is the best I can show you.


http://www2.arnes.si/~mbabic/4phase/image0086.jpg

http://www2.arnes.si/~mbabic/4phase/image0087.jpg

http://www2.arnes.si/~mbabic/4phase/image0088.jpg

http://www2.arnes.si/~mbabic/4phase/image0089.jpg

Interesting, look forward to seeing some results.

Where did you add the 2nd HIP IC?

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Interesting, look forward to seeing some results.

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Me to... I went directly to bed yesterday after posting this, because it was 1AM and I was very tired... now I will call my friend to borrow the camera... and make some good pictures. Then I will mount this baby in my main rig... and we will se how it works :D

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Where did you add the 2nd HIP IC?

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It is located between those two MOSFETs, you probably cant see it becase all the mess around it. It is placed where those two grey wires go...

Huh... I was unable to get camera... so I began testing...

So far things are running fine. CPU overclock is 40MHz higher than before. Before I was running my Barton at 2512MHz voltage was 2.125V set in BIOS, but it fluctuated 80mV measured with MBM.
Now i am able to run CPU at 2550MHz with 2.075V set in BIOS and voltage fluctuates only 50mV, wich is far better than before.

But there is one problem, those two MOSFETs I added are hot like hell. Probably because they are not soldered to the board like the other ones. I'll have to think about that... at the moment I am cooling it with additional fan blowing at it... but I will have to cool it with heatsinks...

Now I am planing to do some further modifications. First one will be adding capacitors on free spaces on back side of CPU socket, I will take them from dead board and solder them on my working one. I am also thinking of raising the switching frequency of PWM CPU power suppy... Now it is switching with 180kHz, but on the other NF7 I own the frequency is 193kHz, and that board has lower voltage fluctuation, so rising frequency may help a litle bit.

Be careful as raising switching frequency will also play a HUGE role in the losses of the upper MOSFET...i.e. it will get a lot hotter.

Hello!

Finaly I am able to show you better pictures.

http://www2.arnes.si/~mbabic/4phase/Picture%20033.jpg
http://www2.arnes.si/~mbabic/4phase/Picture%20034.jpg
http://www2.arnes.si/~mbabic/4phase/Picture%20035.jpg
http://www2.arnes.si/~mbabic/4phase/Picture%20043.jpg

Now you can see details, but the problem is because everything is so small and messy. I had to improvise. Those two wires that go on the front side of the board are PWM signal and Isen sense line for fourth phase. Chip wich controls MOSFETs is located between MOSFETs, where all the wires go. Also there are a few small SMD capacitors and resistors soldered directly between legs of that chip... as I said before It is a mess. But it is working. So far...

As you can probably see from the pictures above I've soldered aditional 8 pin ATX_12V connector to my board, so I can use both ATX_12V supply lines on my Tagan PSU. It decreases voltage drop across cables for 20mV...

Thats it.

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Be careful as raising switching frequency will also play a HUGE role in the losses of the upper MOSFET...i.e. it will get a lot hotter.

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Thanks for warning me, but I am aware of that problem, I am studying elecronics engineering and I know quite a lot about PWM voltage regulators. :D

this is cool, messy but cool. Have u tried to push the vcore to see how it acts on high levels? (about 2-2.2v)?

The highes voltage I can achive is 2.25V And it works without problems... before the overcurrent protection kicked in at about 2.15V

Here I took a picture to prove that this thing is working. CPU is Barton 2600+ at 2553MHz Voltage in BIOS is set to 2.05V

Idle:
http://www2.arnes.si/~mbabic/4phase/Picture%20051.jpg

Full load:
http://www2.arnes.si/~mbabic/4phase/Picture%20052.jpg

Quite good :D

very nice.... very xtreme :D

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I know quite a lot about PWM voltage regulators

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Hmmm....well, you forgot the extra needed capacitors...should have two electrolytics (6.3V, at least 2200uF...I would probably use 3300uF caps) from the output of the coil to ground (CPU VCC plane -> ground) or else the extra inductance does nothing really as it can't supply any extra load on the negative half-cycles. You can solder those in parallel to the other caps using the through-hole leads on the back of the MB...

Other than that....(and this is sort of what I am designing as a Vcore booster except the whole regulation system with 4-phases and adjustable droop with be on a single add-on board):

Creativity: A+ :thumbsup: :D
Presentation: D- :(
Critical Flaws: F (caps) :(

arent we critical :D looks good bro. u should fab it on a board and use wire leads so it looks nicer :D

-CaT

is there anyway you can provide spicific info for the parts used. as i can maufacture a few of these if needed if i have the part numbers.

Hello everybody!

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Hmmm....well, you forgot the extra needed capacitors...should have two electrolytics (6.3V, at least 2200uF...I would probably use 3300uF caps) from the output of the coil to ground (CPU VCC plane -> ground) or else the extra inductance does nothing really as it can't supply any extra load on the negative half-cycles. You can solder those in parallel to the other caps using the through-hole leads on the back of the MB...

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I didn't forgot the capacitors, but in the first step I just wanted to make sure if everything is working fine. As I said before I have plans to add capacitors to back side of the socket (because you need big energy reserves as close to CPU as possible) and I am also going to add 5 3300uF 6.3V capacitors wich I collected from dead NF7. But this will be done after I am 100% sure everthing is working fine.

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Presentation: D-

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I admit that, but I have another NF7 to mod after I will finish this one. And then I am going to write an step-by-step guide with detailed pictures. But please be patient, I have 2 exams in next 14 days and I don't have a lot of time right now :(

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u should fab it on a board and use wire leads so it looks nicer

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That's not so good idea. It would sure look nicer, but design on a additional PCB would add a lot of unwanted series resistance wich is not good, especially if current is so high. The current on one phase can be as high as 20A.

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is there anyway you can provide spicific info for the parts used. as i can maufacture a few of these if needed if i have the part numbers.

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As I said in my first post I got all components from a dead NF7 board. Because all the components in fourth phase must be the same type and value as those in other 3 phases. Otherwise the phase load wont be symmetrical.
The biggest problem is choke, because the value of it is not known. Other components are:

55N03 upper MOSFET
50N03 lower MOSFET
HIP6601 MOSFET driver chip
4.7, 2.9 and 2900 [ohm] SMD resistors
10nF and 100nF SMD multilayer capacitors
choke

That is all.

that looks good. #1 what is that ps line?
#2 you need a 2400xpm!

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#1 what is that ps line?

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This is additional ATX_12V line. This is special 8pin connector wich is used by server motherboards... My Tagan 480W PSU has this connector, and also a standard 4 pin ATX_12V conn. But I like to use them both at the same time :D So I soldered another connector in backside of my mobo...

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#2 you need a 2400xpm!

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Sorry but I don't know what this means...

a moblie 2400+ youd get 2.9 i think

Yes it would be nice to have a mobile... but I doubt about those 2900MHz very much. 2700 OK, 2900 not without phasechange.

POST #1

Very nice work TribesMan. I also noticed with my own setup (I used to use a modded NF7-SREV2.0 + 2600+ xp-m. The max i could get was arround the 2800mark 2810 with 200fsb or 2790 with 223fsb. But then after adding some heatsinks to my mosfets i could increase that to 2838mhz with 218fsb. And that was using a cyclone5 and an eheim 1048, anyone remember those :S

Im sure you could get 2900 with your setup if you found a decent cpu! :P

that overclock was stable for 13hours 10minutes and 21seconds and can be found in this thread http://forums.overclockers.com.au/sh...08#post3550308

New pictures!

More capacitors added...

2*3300uF 6.3V, 2200uF 16V, 20* 5uF 6.3V:
http://www2.arnes.si/~mbabic/4phase/Picture%20053.jpg

Closeup: underside of the socket and added capacitors:
http://www2.arnes.si/~mbabic/4phase/Picture%20054.jpg

The biggest difference between highest and lowest voltage is 30mV... at 2560MHz and 2.1V

Damn nice work bro, what i meant about fabbing it on a PCB, you could use wire leads because 20A would go fine thru 18AWG Wire and if the connections on the board wernt beefy enough you could use wire or solder to reinforce them. THis way you could mount everything but the caps on the topside of the board and have a nice sexy mod. And maybe you could even sell the Pre Fabbed PCB :D

-CaT

Any idea if this works on the AN7?

very sweet! i think i remember you, didnt you build an agp pci lock on an old board and oced a celeron to sick speeds? :D

great work! nice to see the mad scientists lab in full action again! XD

wow, thats very nice
very xtreme :slobber:
can you make a shematic diagramm?

Hello! Me again... :D Lets answer some questions...

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Any idea if this works on the AN7?

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It should... I think that AN7 uses sam voltage controler as NF7, so it I think this mod is possible. I also know it is possible to do it on DFI Infinity NFII, because it uses HIP6301 like NF7...

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very sweet! i think i remember you, didnt you build an agp pci lock on an old board and oced a celeron to sick speeds?

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Guilty... click1 click2 click3

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can you make a shematic diagramm?

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I will... I promise, but first I have to pass 2 exams... so give me 1 week...

Where can you get the parts for this besides a dead board?

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Originally Posted by cetoole

Where can you get the parts for this besides a dead board?

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I have no idea.... especialy inductors are big problem, because they are custom made for Abit and I don't know wich value are they... other parts could be bought, maybe HIP6601 would be a little bit problematic too, but I think in USA it should not be a problem.

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Originally Posted by TribesMan

I will... I promise, but first I have to pass 2 exams... so give me 1 week...

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did you find e little time to make the shematic diagramm? :)

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Originally Posted by TribesMan

Hello! Me again... :D Lets answer some questions...



It should... I think that AN7 uses sam voltage controler as NF7, so it I think this mod is possible. I also know it is possible to do it on DFI Infinity NFII, because it uses HIP6301 like NF7...



Guilty... click1 click2 click3


I will... I promise, but first I have to pass 2 exams... so give me 1 week...

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can you make now a shematic diagramm?

Ups... I totlay forgot about this... :)

I will make it today.

Ok... lets do it!

First you will need to get a few components. The easiest way to get them is to unsolder them from dead motherboard. What you need is one complete phase of CPU power supply unit on motherboard.
It consist of 2 power mosfets (Q11, Q12 and Q13 are upper mosfets marked as PHB55N03LTA, and Q17, Q18 and Q19 are lower mosfets marked as 05N03LA) you need one of each kind. You also need HIP6601B (Synchronous Rectified Buck MOSFET Driver, U12, U13 and U15 on Abit NF7). Choke is also needed, one of L3, L4 or L5 from NF7 (I don't know value for this one, so it is very good if you have a dead NF7 to collect components from it), everything else you need are a two SMD resistors and two SMD capacitors located around every HIP6601B chip on NF7, and a SMD resistor located at HIP6301 (R168, R167 or R166)
So before start you should have exactly 9 components...

Now the preparations. How you will mount 4th phase onboard is completely up to you, but you must do few things on your NF7 before starting. HIP6301 controller is capable of running 2, 3 or 4 phase system, how many phases will work is dependent from how PWM outputs are used, if you want a 2 phase system you must connect PWM3 and PWM4 outputs to +12V, if you want 3 phase system you only connect PWM4 output to +12V. On NF7 3 phase system is used, so PWM4 output is "disabled" To enable it you must unsolder pin 18 (PWM4 output) from PCB and make 100% sure that it is not connected to anything! ISEN4 (current sesning input pin) 19 is already left open, so you dont need to unsolder it.

Schematics:

http://www2.arnes.si/~mbabic/4phase/schematics.JPG

OK... looks messy :D We need to explain some things... Q1 is upper mosfet, amd Q2 is lower. L is a choke, Risen is a resistor in current sensing feedback line (R168, R167 or R166 from NF7 board value is around 3k[ohm]. Rvcc and Cvcc are conected as low pass filter, so that all high frequency distortions are removed. Value for Cvcc is around 1uF and for Rvcc is 5[ohm], (you can get those from NF7 markings are R152, C142; R153, C143; R156, C169). Ru is a gate resistor for upper mosfet, its value is 3[ohm] and it is marked as R144, R141 or R140 on NF7. Cboot is a Bootstrap capacitor, it values around 330nF, and you can get it from NF7 on locations C132, C128 or C127.

Now to the soldering. You must keep in mind that you need to keep thick marked tracks from schematics as short as possible! Current over those tracks can be as high as 30A so it is crucial that series resistance in those tracks are as low as possible. Also note that Isen and PWM signal lines must be placed as far as possible from all power mosfets and choke. High switching currents in those commponents can cause a lot of interference. Everything else is simple... just solder those components together and mount them on board... where you will place them is totaly up to you, but keep all power lines as short as possible.

That's all for now... When I will have some free time I will make a step by step guide... with pictures and everything...

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Originally Posted by TribesMan

Ok... lets do it!

First you will need to get a few components. The easiest way to get them is to unsolder them from dead motherboard. What you need is one complete phase of CPU power supply unit on motherboard.
It consist of 2 power mosfets (Q11, Q12 and Q13 are upper mosfets marked as PHB55N03LTA, and Q17, Q18 and Q19 are lower mosfets marked as 05N03LA) you need one of each kind. You also need HIP6601B (Synchronous Rectified Buck MOSFET Driver, U12, U13 and U15 on Abit NF7). Choke is also needed, one of L3, L4 or L5 from NF7 (I don't know value for this one, so it is very good if you have a dead NF7 to collect components from it), everything else you need are a two SMD resistors and two SMD capacitors located around every HIP6601B chip on NF7, and a SMD resistor located at HIP6301 (R168, R167 or R166)
So before start you should have exactly 9 components...

Now the preparations. How you will mount 4th phase onboard is completely up to you, but you must do few things on your NF7 before starting. HIP6301 controller is capable of running 2, 3 or 4 phase system, how many phases will work is dependent from how PWM outputs are used, if you want a 2 phase system you must connect PWM3 and PWM4 outputs to +12V, if you want 3 phase system you only connect PWM4 output to +12V. On NF7 3 phase system is used, so PWM4 output is "disabled" To enable it you must unsolder pin 18 (PWM4 output) from PCB and make 100% sure that it is not connected to anything! ISEN4 (current sesning input pin) 19 is already left open, so you dont need to unsolder it.

Schematics:

http://www2.arnes.si/~mbabic/4phase/schematics.JPG

OK... looks messy :D We need to explain some things... Q1 is upper mosfet, amd Q2 is lower. L is a choke, Risen is a resistor in current sensing feedback line (R168, R167 or R166 from NF7 board value is around 3k[ohm]. Rvcc and Cvcc are conected as low pass filter, so that all high frequency distortions are removed. Value for Cvcc is around 1uF and for Rvcc is 5[ohm], (you can get those from NF7 markings are R152, C142; R153, C143; R156, C169). Ru is a gate resistor for upper mosfet, its value is 3[ohm] and it is marked as R144, R141 or R140 on NF7. Cboot is a Bootstrap capacitor, it values around 330nF, and you can get it from NF7 on locations C132, C128 or C127.

Now to the soldering. You must keep in mind that you need to keep thick marked tracks from schematics as short as possible! Current over those tracks can be as high as 30A so it is crucial that series resistance in those tracks are as low as possible. Also note that Isen and PWM signal lines must be placed as far as possible from all power mosfets and choke. High switching currents in those commponents can cause a lot of interference. Everything else is simple... just solder those components together and mount them on board... where you will place them is totaly up to you, but keep all power lines as short as possible.

That's all for now... When I will have some free time I will make a step by step guide... with pictures and everything...

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ok, thanks for the description, i will make the mod next week and then i post the results :devil:

Maybe I will try this in next week.. I want to refresh my mods on board,
so, maybe I should have a ocassion to do that :D

Of course, there's one problem - components.. I don't have a other NF-7

TribesMan, should you ask Abit enginners (via e-mail or something)
about these component's values (for example, values of inductors)?

MAY i suggest something ?

You could try soldering a small copper radiator to each of the mosfets

Very nice work :slobber:

:slobber: at the PCI/AGP lock

I think I'll call abit tommorrow and see if they'll sell me a few dead boards. If I can I think I might make a few on pc board and give them to users ;)

Ask them about component's values, please ;)

What do you specifically want to know tonic?

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Originally Posted by bh2k

What do you specifically want to know tonic?

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Originally Posted by TribesMan

The biggest problem is choke, because the value of it is not known. Other components are:

55N03 upper MOSFET
50N03 lower MOSFET
HIP6601 MOSFET driver chip
4.7, 2.9 and 2900 [ohm] SMD resistors
10nF and 100nF SMD multilayer capacitors
choke

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Choke's values

Hey!

It is nice to see that you are interested in doing this mod. :D

About value of specific components. I don't belive that Abit would be willing to give out infos about that... and even if you get infos ther is one problem left... it is almost impossible to buy chokes designed for currents that big... Usualy you can buy chokes for currents below 1A... but this one must be capable of doaing at least 20A...

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MAY i suggest something ?

You could try soldering a small copper radiator to each of the mosfets

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this is planned... but at the moment I don't have apropriate heatsinks... and I am also very afraid of heatsinks making short circuit... tou must know that "tab" of mosfet is connected to the middle leg of MOSFET... and "tab" of each MOSFET is on different voltage so it is very dangerouse! Making shortcircuit over those two heatskinks would instantly kill the motherboard!

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Originally Posted by TribesMan

Hey!

It is nice to see that you are interested in doing this mod. :D

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Don't say hop, until you jump over hurdle :D

It's a new type of mod, only you tested this.. do you remember, what
happened, when a some of persons tried to find methods to mod vtt on
NF-7(S)? Yes, they did a lot of tests and found these methods, but they also
sacrificed a some of their motheroards..

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Originally Posted by TribesMan

About value of specific components. I don't belive that Abit would be willing
to give out infos about that... and even if you get infos ther is one problem
left... it is almost impossible to buy chokes designed for currents that big...
Usualy you can buy chokes for currents below 1A... but this one must be
capable of doaing at least 20A...

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Yup, it makes logic.. but is better to try ask Abit's engineers ;)

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Originally Posted by TribesMan

this is planned... but at the moment I don't have apropriate heatsinks... and I
am also very afraid of heatsinks making short circuit... tou must know that
"tab" of mosfet is connected to the middle leg of MOSFET... and "tab" of
each MOSFET is on different voltage so it is very dangerouse! Making
shortcircuit over those two heatskinks would instantly kill the motherboard!

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Then insulate these components

Must be the most modded NF7, not to mention motherboard out there! :up: You really know your sh1t! Truly extreme. Wished this was done on some of the new boards though :)

I'm sure adding it to newer boards isn't that hard, just needs a little research.

I have question ;]
Can I add capatitors under the socket (like TribesMan) from capatitors in socket in death mobo without doing 4 phase? Only capatitors... ;]

Sorry for my English ;)

yes, as long as they are the right ones.


I've got a cooked infinity...

Ok, thanks ;)
I will try solder this... but first I have to solder mosfets... on my NF7 all "power factory" ;) goes down... :( I resoldered all of HIP6601 MOSFET driver chip byt my mobo still dead... and maybe resoldering mosfets turn mobo to live...
It can be easier, but i have one old solder tool... :D

Sorry for English... ;)

BTW. Capatitors like this under the socket have ~4.5uF. All capatitors with that size on NF7 are the same.

sorry for :) English

A relatively close choke can be fabricated by using a similar sized ferrite torroid (the closer size wise the better) and winding the same sized magnet wire around it in the same manner (same number of turns in the same direction) as the stock choke. There is nothing magic about winding a choke. I haven't done hardware for a long time but this is how we used to modify tuners to liberate subscription broadcast TV. We used to buy the ferrites at the local TV parts store.
Hope it helps!
Enjoy!

There are tons of diferent ferrite cores... The size is not the most important parameter. It is relative persistance of material wich counts the most... And it can range from 1 to few thousand... So same sized ferite wont do the magic...

I tried winding chokes for BX6 motherboard... and after that it never worked again...

Hello there, Swider and owies

Swider, I suggest you to change default capacitors to other with 2x larger capacity

Teoretically it will reform vcore's fluctuations..

Hello Tonic :D
We thought abot larger capatitors... maybe we will do this ;]
But now on my 2 phases and extra capatitors under socket I have excellent stable vcore :D => If I put in bios 1.4V I have real [multimetr] 1.40V in idle any fluctuations ;] and in stress 1.40-1.41V :D

We realisted that we can bring parts from Abit KT7 because it have the same mosfets, HIPs :D Now we looking for Abits NF7 and KT7 ;] Sometimes parts is diffrent by one letter ;] We checked upper mosfets... it was working... but now we have to check HIPs ;]

Do you know any other mosfets, which we can replace... because I can't buy anywhere PHB55N03 mosfets... ?

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Originally Posted by Swider

But now on my 2 phases and extra capatitors under socket I have excellent stable vcore :D

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2 phase? Not 3?

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=> If I put in bios 1.4V I have real [multimetr] 1.40V in idle any fluctuations ;] and in stress 1.40-1.41V :D

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It isn't that so high vcore, so there fluctuations are small

Put 2.2V and stress it, I'm sure that your face will have no any smiles :D

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Do you know any other mosfets, which we can replace... because I can't buy anywhere PHB55N03 mosfets... ?

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It would be really hard, it's all what I can say.. good luck

Yes, 2 phase... the 3rd phase are "broken" :/
If we put there upper mosfet mobo working without cpu... but if we put cpu into, mobo always burn this mosfet... maybe it's sth wrong with HIP6301... but now I have 2 phases... I will try to repair this or do new phase on PWM4... but I don't know that Hip can accept this "jump" => PWM1,2 working, 3 not working and 4 working ;]

I will try highter vcore, but I burned my Chieftec 420 :[ and now I have NoName 300W :[ so I have 1.4V vcore...

Of course there is no voltage fluctuation at 1.4V... And if you are measuring voltage on condensators pins measured voltage will be rock stable... on CPU pins there is completely diferent story :D

The bigest advantage of 4 phase mod is shown at maximum voltage (2.3V in BIOS) before mod it was impossible to boot into windows... the computer would just restart itself, because of overcurrent protection. Now it works without any problems.

And one advice... use capacitors with smaller capacity. Those smaller ones have beter specifications (lower ESR) than biger ones. Dont replace capacitors with biger ones... just add small capacitors... and as close as possible to CPU.

TribesMan,

What is this ESR, could you explain for me, a electronic amateur? :D

Hmm... I will do this :D
Tell me sth about capatitors ;] If in Abit there is e.g 1600uF what size of capatitor should I solder ? 1000uF? 600uF?

What "cpu pins" ? Pins under the socket ? Can you post pic ;] ?

Certainly I will check Vcore like 2.3V but I still waiting for my new psu ;]

TribesMan=> Do you know what's wrong when NB is extremly hot [few second from start] when I turned on mobo without cpu and other stuff... I think the NB is burned ? ... I resoldered two vdd mosfets... 8 pin controler... and nothing change... We will try resolder NB :D

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Originally Posted by Swider

... I resoldered two vdd mosfets... 8 pin controler... and nothing change...

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And add mising mosfet near Vdd, he gives on chipset 2.66V I guess...

Hello Tonic :D you are that guy from tweak.pl ?

Tonic:

ESR is serial resistance of Elecrolytic condensator. You want to keep it as low as possible, because it worsens capacitors quality. Good capacitors have ESR around 10m[ohm], or less.

Swinder:

You can use any type or size of capacitors... but you will get better results with more smaller capacitors than with one big one. Oh and please keep those Abit capacitors where they are... those are good caps... just add some...

Solder them on pins of CPU socket on backside of motherboard, or on those places where SMDs shoud be... but be carefull, polarity of electrolytic caps is very important. If you screw it up they will explode! No pics sorry... I don't have camera.

If your NB is hot then it is probably dead.

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And add mising mosfet near Vdd, he gives on chipset 2.66V I guess...

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Don't do that... :D

THx... We think also NB is death... and now we have to resolder NB :D
because I did that:

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And add mising mosfet near Vdd, he gives on chipset 2.66V I guess...

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:D:D:D

@TribesMan
Swinder -> Swider ;)

I had Vdd at 2.75 for 30sek and everything works fine :p:

BTW. Enybody knows how is "opalarka" in english?
Iron with blowing hot air or Big "dryer" (around 600`C :p: )

Resoldering NB, maybe SB....that`s not xtreme...that`s crazy but.... We could add MCP-T to NF7... :stick: if it will work :p:

Hehe, it's me, owies

Resoldering NB.. I should call it extremely crazy

No, it won't work, because of fact that MCP-T controls a few elements, which
doesn't exist on NF7.

We will see, for few hours ;)

@Tribes

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ISEN4 (current sesning input pin) 19 is already left open, so you dont need to unsolder it.

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ISEN4 is 17 pin ;)

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Originally Posted by TribesMan

There are tons of diferent ferrite cores... The size is not the most important parameter. It is relative persistance of material wich counts the most... And it can range from 1 to few thousand... So same sized ferite wont do the magic...

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Yep, toroids can be vastly different based on materials used.

I just did the mod but it isnt working. I have 0V on LGATE but it should be 8-9V.

First i thought that a part was brocken, so I took another phase from my old NF7 but I got the same Error again.

Any idea whats wrong here?

Error found!

I didnt connect 12V to the HIP6601 :rolleyes:

i did the mod me too, nice work TribesMan :toast:
it works perfectly.
it increase my max cpu speed by 30-40 Mhz( stable speed).
now the is removed.

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Originally Posted by pc ice

what is a couple nf7-s mobo's that might not work..worth. for part's and i think 1 work's.any one need them.

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you wouldn't happen to know what the costs would be for sending them overseas to europe would you?

Quote:

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Originally Posted by pc ice

what is a couple nf7-s mobo's that might not work..worth. for part's and i think 1 work's.any one need them.

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Me and Świder :)
Edit.
but most me, świder will fry it :D

Wow I *might* try this... picked up an nf7 just to play with.

Swider, what Bios version do u use?