Not true. If you clocked an 80386 at 800 MHz. It will be the same speed as an Pentium II clocked at 400 MHz. Pentium II executes two instructions per cycle. The Pentium II has more technology built into it like MMX, FPU, L2 cache, pipelined bus, etc. The number of transistors does not always qualify as a fast processor. It just means that we have to burn more money to pay for it and more heat have to be dissipated from it.


This is not always true. Sometimes its better to use eariler architecture. A Pentium 4 is 80786.


Almost right, Pentium III is an 80686. Pentium 4 is an 80786.

For Pentium 4, you have to find programs that are compiled for the Pentium 4 or else the performance will be low.

All Intel processors uses the ISA instruction set back in the early 80s. First it was 8-bit instruction set. Then there was the 16-bit. Next the 32-bit instruction that all processors since 80386 were using it. Each processor model designates with the 80x86 notation. Each model increase in features and sometimes performance. Now the x86 computer industry is on the urge of going to the 64-bit instruction set.

8086 = 8-bit
80186 = 8-bit
80286 = 16-bit
80386 = 32-bit
80486 = 32-bit
80586 = 32-bit = Pentium, Pentium MMX, K5, K6, K6-II, K6-III
80686 = 32-bit = Pentium Pro, Pentium II, Pentium III, Athlon, Athlon XP, Opteron*, Athlon FX-51*, Athlon FX-53*, Athlon 64*
80786 = 32-bit = Pentium 4

* = 32-bit/64-bit

If you have compiled a program for 686 architectures, only the processors equal to it or above it can execute it. If you have compiled a program with MMX/SSE/3DNOW instructions, processors that have it will be optimized and processors that do not have those instructions will not be optimized.

Go to http://www.sandpile.org/ for more information.

لا يهم أخي هناك منصتان 32 بت و الأخرى 64 بت , يبقى فقط الهندسة ليست نفسها , يمكنك تحميل ما تشاء لكن 32 بت أحسن إجتنابا لتعارض البرامج مع المعالج أو فيما ببنها