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Jp7
09-23-2009, 12:53 PM
Hey guys, anybody know a VMOD ( GPU & MEM ) for MSI RX1650pro ?

http://img29.imageshack.us/img29/8568/vmod011b.th.jpg (http://img29.imageshack.us/i/vmod011b.jpg/)


http://img29.imageshack.us/img29/7695/vmod012b.th.jpg (http://img29.imageshack.us/i/vmod012b.jpg/)

Thanks a lot!!!
ceemic
09-25-2009, 07:42 AM
APW7120 for Vmem: http://ceemic.pri.ee/hardware/datasheets/APW7120.pdf
Measure resistance between pin 6 (FB) and pin 3 (GND).

RT9232B for Vgpu: http://ceemic.pri.ee/hardware/datasheets/RT9232B.pdf
Measure resistance between pin 5 (FB) and pin 7 (GND).

PS. Don't forget to remove VGA from PC first.
Good luck.
Jp7
09-25-2009, 11:41 AM
APW7120 for Vmem: http://ceemic.pri.ee/hardware/datasheets/APW7120.pdf
Measure resistance between pin 6 (FB) and pin 3 (GND).

RT9232B for Vgpu: http://ceemic.pri.ee/hardware/datasheets/RT9232B.pdf
Measure resistance between pin 5 (FB) and pin 7 (GND).

PS. Don't forget to remove VGA from PC first.
Good luck.

Thanks for your help Ceemic

APW7120 pin 6 --pin 3 1.124
RT9232B pin 5 -- pin 7 642
ceemic
09-25-2009, 12:10 PM
1.124k ohm and 642 ohm?
Recheck these resistances with some other GND point near IC's (FB-GND) to be sure.
Jp7
09-25-2009, 11:37 PM
1.124k ohm and 642 ohm?
Recheck these resistances with some other GND point near IC's (FB-GND) to be sure.

ops...today I have different value...


APW7120 765 ohm
RT9232B 585 ohm
ceemic
09-26-2009, 02:26 AM
Jp7, now measure another 9 times :)

Sometimes there can be some diodes on FB "chain" so measuring polarity may vary with cheaper DMM's. Use DMM'd black lead for GND and red for FB.
Jp7
09-27-2009, 03:00 AM
Jp7, now measure another 9 times :)

Sometimes there can be some diodes on FB "chain" so measuring polarity may vary with cheaper DMM's. Use DMM'd black lead for GND and red for FB.

APW7120 765 - 764 - 765 - 774 - 766 - 761 - 769 - 786 - 788 - 761ohm
RT9232B 585 - 577 - 592 - 589 - 615 - 616 - 589 - 582 - 596 - 582 ohm

:)
ceemic
09-27-2009, 05:03 AM
761 vs 788 and 577 vs 616 are way too big differences. What DMM do You use? And was the card unplugged from PC?
Jp7
09-27-2009, 08:14 AM
761 vs 788 and 577 vs 616 are way too big differences. What DMM do You use? And was the card unplugged from PC?

I use an old HT3000, card unplugged.
Can I solder a 10K VR APW7120 pin 6 --pin 3 and a 10K VR
RT9232B pin 5 -- pin 7, should works?
ceemic
09-27-2009, 08:17 AM
I suggest 20k and 20k to be safe.

Have You found better soldering points also that are directly connected to FB pins?