Chosen Solution

Hi there, i bought a new (i.e. used) Radeon HD 5750 for my 27” mid 2010 iMac. When I inspected the new card, i noticed a missing part, one of those rectangular things surrounding the GPU. I think it’s a capacitor:

Is this a problem? Will the card work normally? Should I return it?

@bubo return it. If there are already missing components you really don’t know what else is going on with it. Remember that there are no schematics available for this you would have to do a bit of experimenting to even try to replace them.