MSI 4670 512mb vmod

[filmbot]

I know there's already a couple of threads on modding these cards but it seems that there's a lot of non ref PCB's out there. Compared to the other guides on here, the only IC that I have in common with others is the vmem IC. The other IC's I have looked up on my card don't have FB pins. So if somebody can help me, I'd really appreciate it

These are the two different type of ICs I have on the back of my card.

uP6101
http://www.upi-semi.com/ProductFiles..._DataSheet.pdf

PM25LV512A
http://www.chingistek.com/resource_c...040%20v3.5.pdf

RT9173C
http://pdf1.alldatasheet.com/datashe...K/RT9173C.html

uP6101 is the IC in the top left corner, RT9173C are the bottom two towards the bottom right corner and PM25LV512A is the one top of the bottom two.

[Gendo]

I'm just a noob when it comes to this sort of stuff but usually the one in the top left corner is the mem IC right?

But I guess if you can't find a FB pin on the 2 ICs you've been able to determine, the 3rd IC would be the one you need

Edit: In the up6101 datasheet there's 2 pics on the first page, both with FB pins Or doesn't your card have SOP-8 or PSOP-8 type up6101?

[filmbot]

Nevermind, the bottom 2 IC's are RT9173C the top one is PM25LV512A. Edited first post.

[filmbot]

Ok, nevermind I'm an idiot and completely overlooked the tiny IC on the front of the card. Its uP6205B the same as used on the 4770. FB is pin 8 and measures 711ohms to ground. Would 20k VR be enough or should I go up to 50k? Now, are these spots good for vGPU read points?

[Vivi]

20k will be no problem yes !

use 20k

[filmbot]

Do you think those are read points though?

[ceemic]

filmbot, yes two of them should work fine for measuring Vgpu.
I added additional possible measuring points: http://ceemic.pri.ee/hardware/all/hd4670_mon.JPG