COMPTIA A+ Practice Exam 2026 – 400 Free Practice Questions to Pass the Exam

The other options listed, Athlon 64 X2, Phenom, and Phenom II are all processors manufactured by AMD, a competitor of Intel. However, they were released after the Intel Pentium 4 and do not directly compete with it. The Athlon 64 is the closest option, as it was released around the same time as the Pentium 4 and was marketed as a competitor, but it ultimately fell short in performance compared to the Pentium 4. Therefore, the Athlon 64 is the best answer as the processor that directly competed with the Intel Pentium 4.