Question Is this the mosfet driver for the gtx 650 ti?

[Giant Hunger]

So my gpu sometimes post and sometimes dont. And i think the main problem is the mosfets. I used my multimeter to see are there any shorted mosfets and no, i have checked all the mosfets and it seems like theres no shorted mosfets.
So is the problem the mosfet driver? i heard that a ytuber said that youll need to replace the mosfets driver after you replace the mosfets.
And if so where do you think is the mosfet driver? because i dont know
This is my gtx 650 ti

And i guess this is the mosfet driver

The chip is labled GH15B
So is this the mosfet driver or not?
And should i replace it?

 

[hotaru.hino]

Assuming they were talking about something on the VRM, that chip doesn't look like it's part of the VRM circuitry.

 

[Giant Hunger]

Assuming they were talking about something on the VRM, that chip doesn't look like it's part of the VRM circuitry.

Then where do you think the mosfet driver is?

 

[hotaru.hino]

Then where do you think the mosfet driver is?

I went back to look around what a "MOSFET driver" actually is, and I'll rescind my last post because it does look like one based on this part https://www.digikey.com/en/products/detail/diodes-incorporated/ZXMS6005SGTA/8545906 . However, it may not actually be that specific part.

Although I don't really have much confidence if that's what you're looking for without a. someone with the same exact video card replacing the MOSFET driver and that was the chip they replaced or b. a circuit diagram (but good luck finding that)

EDIT: I guess there's c. this is the only chip of that sort on the board. But there's still the problem of knowing which exact MOSFET driver they used.