220-802 · Question #481
Which of the following is an advantage of installing a 64-bit processor versus a 32-bit processor?
The correct answer is C. Able to access a larger amount of RAM memory. The primary practical advantage of a 64-bit processor over a 32-bit processor is the ability to address a vastly larger amount of physical RAM, overcoming the 4GB ceiling of 32-bit addressing.
Question
Which of the following is an advantage of installing a 64-bit processor versus a 32-bit processor?
Options
- AUses less bandwidth on the front side bus
- BOnly requires half of the clock speed
- CAble to access a larger amount of RAM memory
- DAble to be used as two 32-bit processors
How the community answered
(46 responses)- A4% (2)
- B2% (1)
- C91% (42)
- D2% (1)
Why each option
The primary practical advantage of a 64-bit processor over a 32-bit processor is the ability to address a vastly larger amount of physical RAM, overcoming the 4GB ceiling of 32-bit addressing.
A 64-bit processor uses wider data paths, which can increase bus bandwidth rather than decrease it, and the front-side bus width is a separate architectural characteristic.
The bit-width of a processor has no direct relationship to the required clock speed - 64-bit and 32-bit processors at the same generation run at similar clock rates.
A 32-bit processor can address at most 2^32 bytes, approximately 4GB of RAM. A 64-bit processor uses 64-bit memory addressing, theoretically supporting exabytes and practically supporting hundreds of gigabytes or terabytes in modern systems. This is critical for workloads requiring large data sets or many simultaneous processes that exceed the 4GB limit.
A 64-bit processor functions as a single unified processing unit and cannot be logically divided into or operate as two independent 32-bit processors.
Concept tested: 64-bit vs 32-bit RAM addressability advantage
Source: https://learn.microsoft.com/en-us/windows/win32/winprog64/the-advantages-of-64-bit-windows
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