What is the main difference between Pentium and AMD processors?

Answer

Both chips are very similar, but due to marketing, they seem very very different from each other. The primary "marketing" difference is the way they claim their speeds.

The Intel chipsets (Pentium, celeron) use MHz as a speed factor. IE "This Pentium 4 chip runs at 3000 MHz" (IE a Pentium 4 3.0).

The AMD chipsets do not use a MegaHertz rating for speed because they believe doing so would make their chips seem slower than their Intel counterparts. This is due to the difference in instruction set handling that AMD uses, and is too technical to really get into here. Instead you may see an AthlonXP 1600, etc. Apply the following formula to determine the "Pentium" equivalent MHz speed.

MHz = (XP rating/1.5) + (500/1.5)

For example, with an Athlon 1600, the math would break down like this: MHz = (1600/1.5) + (500/1.5) MHz = (1066.66) + (333.33) MHz = 1399.99

Which would be equivalent to the last incarnation of the Pentium 3 (at 1400 MHz).

Because Intel has enjoyed longer commercial success than AMD, you can typically find comparable AMD chips for half the cost. This has to do with brand loyalty and advertising costs as well as the types of memory used in both chips. Intel uses more expensive RDR RAM while the AMD chips use DDR RAM. That said, the RDR RAM is faster (533 MHz versus the 333 MHz of the DDR RAM) and helps to soften the blow of the cost of the chips to the consumer.

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