We try not to comment on things we are unsure about. I spent a few hours trying to find out for you but did not come out with anything usefully.
You need to do some research about disassembling the pcb from the heat sink I do this my self all the time. so it is 95% safe, however make sure your grounded, fast simple way is to touch your case every few minuets, so you don't short out the card. know that if you have a warranty it will be void after.
after you have taken it apart you can compare to the reference photos witch you can find in goggle, if your unsure post a picutre here after.
Again be carefully if you decide to do this.