ATI radeon HD 4850 can run very hot, when there is limited airflow. This is normal i had one which had an idle temp of 82c turn fan speed to 55-60% you will be fine soon then temps will drop from 61-52c.
will a PCIe x1 to a x16 riser adapter
make the mother board able to use CrossfireX i only have 1 PCIe x16 slot. Or is it possible to install
a new PCIe x16 slot. At least tell me whats the best i could do.