If you have one and it is a default regular PCB like MSI with the circular fan at the back or like this
ZOTAC GeForce GTX 465 Review | techPowerUp
If you are looking at the Accelero Xtreme Plus II ,like this one
Accelero Xtreme PLUS II · VGA · Cooling · ARCTIC
but remember you will also need the VR003 kit to go with it for your ram sinks and other
VR003 · Accessories · ARCTIC
You could get lucky and if it has all the memory on the card 10 instaed of 8 it could be possible to flash to a GTX-470 ,Just google it and they tell you all about it.
The Accelelero Twin Turbo II will fit it also and it i cheaper and has all the parts in one kit.
Accelero Twin Turbo II · VGA · Cooling · ARCTIC