Aca queda una explicacion de que es cada cosa, por las dudas.
MHz (MegaHertz) (Millions of processor cycles per
second) The number of times the processor goes
through one cycle. The start of a processor cycle is
determined by a pulse (tick) from the processor’s
clock.
GHz (GigaHertz) (Billions of processors cycles per
second). 1 thousand MHz = 1 GHz
MIPS: (Millions of Instructions per Second) with the
introduction of the 80486 DX2, parallel instruction
execution increased the number of instructions
executed per processor cycle to approximately one
instruction per cycle. Parallel instruction execution
requires many more transistors, so the increase in the
number of transistors has increased the number of
instructions that can be executed per second faster
than the clock cycle speed has increased. A larger
transistor budget allows the addition of specialized
instructions, which increase the microprocessor’s
speed in processing specialized information such as
graphics by increasing the amount of information
processed per instruction.
+Multiprocessors on the chip produce more than one
instruction per clock cycle.
GIPS (GigaInstructions per Second) Billions of
instructions per second. 1 thousand MIPS = 1 GIP
Design Rule: because the wires and components,
including transistors, on chips are drawn
photographically, the pixel size of the imaging process
determines the width of the wires and the size of the
transistors. The size of the transistors determines how
many will fit on a chip of a given size. (The optimal
size of a chip depends on the chip manufacturing
processes. In general, chip size increases slowly over
time.) The smaller the transistors, the more will fit on
the chip, determining the chip’s transistor budget. The
size of the transistors also determines the transistor’s
switching speed. Smaller transistors switch faster.
One micron is one one-millionth of a meter or about
40 millionths of one inch. Finally, the power required
to switch smaller transistors is less, so smaller pixels
in the design rules allow the batteries in laptop
computers to last longer.
Number of Transistors: The number of transistors
increases as the square of decrease in design rule size.
Each reduction in design rule size is chosen to about
double the number of available transistors (the
transistor budget). [For example: (.25micron / .18
micron) x (.25 / .18) = 2.] The gradual increase in
die size (the size of the chip) also increases the
number of transistors. The Itanium chip has 30
million processor transistors and 300 million memory
cache transistors
Address Bus Bits: The address bus width in bits is
based on the microprocessor chip family. (In the later
chips of the 80686 family, some changes have been
made to make more memory addressable under special
circumstances, by using 36 bits to address 16 times as
much memory as is possible with 32 address bits, but
the generalized addressing structure is still 32 bits.)
Each time a bit is added to the address bus width, the
amount of memory (RAM: Random Access Memory)
that can be addressed is doubled. 4 bit addresses
allow the addressing of 16 bytes of memory (and extra
work is necessary to address 256 bytes of memory). 8
bits allow the addressing of 256 bytes of memory (and
extra work is necessary to address 65,536 bytes of
memory). 16 bits can address 65,536 bytes of
memory. 32 bits can address 4,294,967,296 bytes of
memory (about 4 billion bytes). As memory prices
drop, it becomes necessary to address over 4 billion
bytes of memory. The 80786 family, (the Itanium)
debuted May 29, 2001. It has a 64 bit address bus and
will be able to address over 16 billion billion (16
quintillion) bytes of memory.
