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I’m almost sure that the 2. Just odd the 13 is datashfet directly to that cap. Once we figure out which output is supplying the Vddr and Vgpu, we can try modding the inverting inpout pin each output pin. I dont recall what the baseline Vddr is for the cards.

Anyone make sense of that one? Give me a resistance reading for pin 4 and lets see if we can change the Vddr by modding this RT IC.

F Datasheet catalog

I wanna try and find some volt mods for it. Resistance between pin 1 and a ground is Got some pics now. If possible, please check the voltage on 14 and post that.

Odd pcb layout vmods. Ok, pin 5 is the actual output for the RT ICs. Well, nothing else to do but give her a try then.


Oddly enough I found a connection between the ricktek chip and the cap measuring 2. Pin 13 is the inverting input for output pin I feel for ya tho: Those are the outputs.

We need to make sure its Vddr and not Vddq. That sounds a bit low for Vddr, thats probably vddq.

Keep a good eye on the voltage as you adjust the VR. If Output Pin 1 is supplying Vddr, then we try modding to pin 2. The card is a pro I just got back from rma and it doesn’t look anything like ddatasheet one I had, layout wise at least. If you dont get an increase after turns, then I would stop and we need to take another look at it. I found connectivity between pins 13 and a cap on datahseet back of the card that reads 2.

IRF7413 Datasheet PDF

There is nothing else really. The LM chip is prob controlling either Vgpu or Vddr. Do a resistance between 13 and GND and post what you find.

BTW HF, this is a not a ti I’ll try and see if I can get some pics, but those are all the ic’s on the card so can anything be worked from that? The back of the card is almost blank except for one mosfet which reads “APME” There are also small 3 legged ic things that read “PH0o BCP68” On the front of the card there are more things that look like regs. Sounds like the vdd voltage right there.


Then do the connectivity test between those points and pins 1, 7, 8, and Those are all the ICs on the board. If the resistance between 13 and GND is ohms, then a 1K VR is gonna lower resistance by a solid 60 ohms, which may be to much to start with since we are shooting in the dark right now. My pop has the camera so I can’t take any at least not tonight. Well I looked over datasheeet datasheet and r7413 pin do you think is likely to be it?

I would start with a 5kk VR just to be safe.