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ASUS EAH3650 voltage mod needed (pencil)

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#1
I have this card and I don´t like max OC it is capable of
from stock 725/800 I am able to go somwhere about 860/1050

I read the rewiev on vr-zone web and with TOP version they were able to push it to insane 973MHz on stock cooling


I am wondering if you could find/work out volt mod for GPU (ideally pencil or bios)

I heard that Random Murderer has it almost done but I have no other infos if it was a succesful try or not
http://forums.techpowerup.com/showthread.php?p=693476&highlight=%2A3650+mod#post693476

I borrowed digital camera to take some shots of this card (2560x1920)
unfortunatelly I can upload photos to FTP based storages only so I put it on my web hosting
Anybybody can download it and reupload it anywhere more suitable for you

http://skladku.hostujem.sk/eah3650/eah3650.rar

so I looked closer on some nice ICs on the card to provide some infos


names of ICs are on pictures but I will write them also here

AHCI125
709C214
Un607
32B

APW7120
MJC37

APM4800
MJ74W

APM4800
MJ74W

AS324M-E1
732N69

RT9607
PS9JB0K

Atmel702

I hope you can help me to figure out which ICs are responsible for Core voltage
I have the multimeter and pencil ready for an action but I don´t know where to shade:cry:
 
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Random Murderer

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#2
do you have a high res camera?
 
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#3
I don´t know which resolusion you call hi res

but I have 2560x1920 camera with macro and super macro modes

tell me which part to shot and I´ll do it
 

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#4
on the back below the atmel702 there's a small, square ic. i want a pic of that clear enough that i can read the writing on the chip and pcb.
 
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#5
I did my best
I shot it multiple times for you to have more images
My hands were shaking a bit so some images are not good, but then I turned on image stabilisation so I hope it will help you

This IC is named
AA-9K
N15

One picture is modified in photoshop (added IC name)
the name added is in the same direction as the name on that IC
http://skladku.hostujem.sk/eah3650/aa-9k.rar
 

Random Murderer

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#6
any chance i can get an image of the card's top(bottom if it were in the computer) without the cooler installed?
 
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#7
you mean side where GPU is?

well not today, I am bit busy
if things go OK than Tuesday afternoon I´ll do it
if somesthing unexpectable happens (school) than Wednesday

anyway thank you for your help
I really appreciate it
 

Random Murderer

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#8
you mean side where GPU is?

well not today, I am bit busy
if things go OK than Tuesday afternoon I´ll do it
if somesthing unexpectable happens (school) than Wednesday

anyway thank you for your help
I really appreciate it
no problem. i'm doing a bit more research on your ic's on your card atm, so that pic would just load me down even more, lol!
EDIT: the reverse engineering is rough without actually having the card, lol.
 
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#9

Random Murderer

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#10
ok, i think i found where to shade for a voltage increase, but i'm not sure if it's for vcore or vmem; my guess is vcore.
there's no way for me to be sure either, because i haven't found a measure point. this is tough without having the card itself.
 
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#11
well that sound good

do you need more photos of anything to find out measure point?


thanks
 

Random Murderer

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#12
well that sound good

do you need more photos of anything to find out measure point?


thanks
no, i don't need more pics, just more time. unfortunately, i only have about a half an hour free today...
 
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#13
OK thank you very much
If you have some spare time give it a look

thanks
 

Random Murderer

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#14
OK thank you very much
If you have some spare time give it a look

thanks
oh, i'll probably get to it tonight or tomorrow. if not then, then this weekend.:toast:
i'm starting a new job and i'm running around like a chicken with his head cut off trying to get everything in line.
 
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#15
I hope you have no problems in your new job

I don´t want you to think that I put you under pressure but if you have some spare time, give it a bump please

Thank you
 

Random Murderer

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#16
I hope you have no problems in your new job

I don´t want you to think that I put you under pressure but if you have some spare time, give it a bump please

Thank you
hey, no problem. i'll keep looking. i think i might know where to measure, so i'll be back in a bit.
 
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#17
Ok thanks

and I have another question
Is the mod area be somewhere under stock cooler or not?
Because I have card on my table to have all accsess to all parts of it
and I am powered with 3dfx Voodoo3 2000 16MB PCI:rockout::toast:
Just to know if I can mount the cooler and put it into my rig or not

Thanks
I am looking forward to hearing any news
 

Random Murderer

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#18
Ok thanks

and I have another question
Is the mod area be somewhere under stock cooler or not?
Because I have card on my table to have all accsess to all parts of it
and I am powered with 3dfx Voodoo3 2000 16MB PCI:rockout::toast:
Just to know if I can mount the cooler and put it into my rig or not

Thanks
I am looking forward to hearing any news
no, you can go ahead and remount the cooler.
 

Random Murderer

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#19
ok, i'm fairly certain that the AA-9K IC on the back of the card is the source for the vcore... but since i can't find a damn thing about it, i can't be sure.
that being said, i believe the chips on the front of the card are for vmem. when i get a measure point, you can try this, but vmem never helped at all on my card... it actually hurt.
i think i found a measure point... but i'm not sure if the trace is even connected to anything...
i'll post pics soon.
 

Random Murderer

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#20
pics...
one pic shows the resistor to shade, the other shows what i think are the measure points. one is ground and the other is voltage supply, so if you can just put the tips of your probes on those points. i know they're kinda close, but you should be able to manage.
remember to measure BEFORE any shading.
cheers.
:toast:
 

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#21
pics...
one pic shows the resistor to shade, the other shows what i think are the measure points. one is ground and the other is voltage supply, so if you can just put the tips of your probes on those points. i know they're kinda close, but you should be able to manage.
remember to measure BEFORE any shading.
cheers.
:toast:
OK I will try that soon but no ETA

is the ground needed to be exactly there?
I think that any ground in PC (for example black wire on molex connector) should do the job
If I am wrong correct me please
 

Saakki

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#22
have to say that this is some professional assistance u are giving here Random :rockout: spread this volt mod around when its clear
 

Random Murderer

The Anti-Midas
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#23
OK I will try that soon but no ETA

is the ground needed to be exactly there?
I think that any ground in PC (for example black wire on molex connector) should do the job
If I am wrong correct me please
either way.
 
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#24
I tried your measure points but they seem to be wrong
I got 0.0-0.01V on first and 0.01-0.02V on the second

I have not studied electronics but very often is a leg of one of the capacitators the measure point

If you can do something more, I will be glad
 

Random Murderer

The Anti-Midas
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#25
I tried your measure points but they seem to be wrong
I got 0.0-0.01V on first and 0.01-0.02V on the second

I have not studied electronics but very often is a leg of one of the capacitators the measure point

If you can do something more, I will be glad
i was having you put the probe directly on the v+ point for the memory, but apparently because there are no memory chips on that side, all the surrounding circuitry is missing as well...
i'll keep searching.