Nvidia K4100m missing chips .. can you identify please

[nsr500rossi]

Hi

I bought a Nvidia K4100m for my aged iMac 2011 the other day.

Unfortunately (I have no idea how ) I have knocked off two chips and dislodged one other .

I wondered if you guys could identify what the part numbers might be so I can replace them .

I have looked all over for a schematic for the board but to no avail.

To add .. the missing chip at the front with the three tab attachments has the code TR7 written on it

Attached is a photo..

I have ringed to missing or damaged chips in red

Thanks