Pentium 100

Processor using the i586 microprocessor launched on 22th March 1993 and discontinued on 15th July 1999.

Comparison of Pentium 100 (i586) and Core i7 (2024)

Pentium 100 (i586)

• It has relatively simple architectures with limited instruction set.
• Pipeline is less complex.
• Hyper threading is not available.
• There are no advanced optimizations for out-of-order execution.
• Simple memory model.
• Parallelism and thread processing: Pentium uses only one thread.
• Performance: Emulating Pentium 100 should be much more faster.

Core i7 (2024)

• Instruction set is much more complex (including SIMD extensions like AVX, AVX2, AVX-512).
• Several pipelines with out-of-order execution of instructions.
• Branch prediction.
• Hyper threading.
• And other advanced optimizations.
• Complex memory model:
  • Several layers of cache (L1, L2, L3)
  • Cache prefetching
  • Speculative execution
  • TLB (Translation Lookaside Buffer) for virtual memory
• Parallelism and thread processing: Core i7 has several cores and supports hyper-threading.
• Performance of Core i7 is about 1000 times bigger than the performance of Pentium 100.