Yes. This is something called BGA reball. You couldn't replace the card if you wanted, its attached to the motherboard.
You can do it with a heatgun, a BGA stencil and solder balls. This is not how its professionally done, and is somewhat difficult and can damage other parts of the motherboard.
Professional/industrial BGA mounting and reball is done with infrared heat and ovens.
The chip itself is not bad. Its in fact the actual connection or "solder balls" that crack and go bad along with the underfill which is supposed to glue the chip to the board, but instead warps it.
You could replace the chip with something that has the same pinout such as a g96 core, that would certainly be interesting to see what happens.
Yes. Multitasking is dependent on the operating system, not the processor.
Most likely, what are you replacing?
hyperthreading
It is not possible for a person to upgrade their PowerPc G4 eMac to an Intel processor. This is because the computer model is severely outdated and isn't compatible with the Intel processor.
Yes, to make a program in Turbo C for a mini computer to have a dual core processor.
No.
There is generally no relationship between replacing a radiator hose and a car not starting. However, it is possible that the engine overheated and has a cracked head. It is also possible that something was accidently disconnected when replacing the hose.
A quad core processor is the best on the market for an average consumer. It is possible to get higher specs, but it is more for technical use.
I suppose it is possible, but for consumption I do not recommend it.
Your question is a bit vague. This is a good way to start upgrading a computer that is say 5 or more years old. Especially if you have already updated (flashed) your bios and put the fastest processor and added the most and fastest memory possible in your computer. Even an inexpensive motherboard for around $50 on can handle the latest processors, memory, etc.
i have a lap top fujitsu fmv716nu3 annd iwanna chang processor i want 2.10 ghz is it possible?
It is not possible to replace the processor in a G5 iMac. You could replace the entire logic board for one with a slightly faster G5 but it will be a lot of work for little gain. The newer Intel Macs are completely different systems and the parts are not interchangeable with older Macs.