Question

Explain the advantages of following features of Pentium Processor
(i) Dual - Pipelining
(ii) Pre fetching
(iii) Branch Prediction
(iv) Internal Data Bus

State any three features of Pentium Processor

Explain any three important features of Pentium processor.

Answer 1

(i) Dual pipelining :
The use of super scalar architecture incorporates a dual pipelining in Pentium processor, which lets Pentium to process more than one instruction per clock and achieve a high level of performance.

(ii) Prefetching : Out of syllabus

(iii) Branch prediction:
(i) The advantage of branch prediction is that, using branch prediction, it makes an, intelligent guess of the next conditional instruction.
(ii) This prevents the instruction cache from running dry during conditional instruction.

(iv) Internal Data Bus
(i) Pentium has 64 bit data bus which allows higher speed of data transfer to it.
(ii) The data transfer speed of Pentium is twice as fast as a processor with 32- bit data bus.

Answer 2

• Pentium is a 64 bit microprocessor, introduced in 1993.
• It has 64-bit data bus and 32-bit address bus. The use of superscalar architecture incorporates a dual- pipelined processor, which lets and Pentium process more than one instruction per clock cycle.
• The addition both of data and code caches on the chip is also a feature designed to improve processing speed.
• A new advanced computing technique used in Pentium is called the branch prediction, the Pentium makes an educated guess where the next instruction following a conditional instruction will be. This prevents instruction cache from running dry during conditional instructions.
• The Pentium has 64-bit data bus. This means that it can perform data transfers with an external device twice as fast as a processor with a 32-bit data bus.