The Motherboard i think or maybe the processor.
super computer
The computer component that presents the most risk of electric shock is the power supply. Since there are large capacitors in the power supply, it is possible that you might get shocked, even with the power supply unplugged.Another component that presents a shock risk is an internal modem. You might grab a hold of it while there is an incoming phone call, and then get shocked from the ringer current.
The most important element of a computer system is the Central Processing Unit (CPU). It’s like the brain of the computer because it controls everything. It handles all the instructions, runs programs, and makes sure tasks are done properly. Without the CPU, the computer won’t work at all, it can’t think or respond. That’s why it’s the core part that keeps the whole system running
BILLIAM GATES
hard drive
Yes the CPU (aka microprocessor or Central Processing Unit) is the most important, but it is not necessarily the most expensive.
The single most expensive component of a system built from separate components is generally the processor.
The single most expensive component of a system built from separate components is generally the processor.
A laptop if you want a complete computer that you can carry around (there is a CPU in a laptop)A CPU if you have a computer and want to upgrade or replace the "Central Processing Unit" which is the most expensive and complicated component.
There are no records for the most expensive computer desk in the world. A computer desk price or value can be very expensive if it is a custom made piece of luxury furniture.
The most expensive computer is made in Japan. It is an Earth simulator costing over $400,000,000, which makes it the most expensive computer ever built.This very expensive computer is used for a variety of international projects. Most are related to atmospheric, climate, and oceanographic simulation.
While it's hard to define one "most important" part, I'd have to say that the power supply should have that distinction. Without electricity flowing to the computer, the rest of the electrical system has no purpose.
supercomputers
According to TOP500, the fastest computer is currently (as of September 2017) the Sunway TaihuLight, at a speed of 93 petaflops. I don't know whether this is also the most expensive computer.
The most expensive Franklin Language Translator Computer will vary in price depending on where one is purchasing them from. In the United States the most expensive one's are around $200 and the cheapest about $15.
Labor costs at most computer stores are quite expensive, you are better off finding a computer savvy friend to do it for you.
P4