Socket-478 vs. 423: This translates into
one main difference. The new 478 model will allow for a
much more densely packed arrangement of pins known as uPGA,
or micro Pin Grid Array, interface. This simply results in
the capability of the CPU to be much smaller and the space
occupied by the interface socket on the motherboard to
decrease as well. The entire Pentium 4 line will be
available in both Socket-423 and 478 versions, although
eventually all of the processors will be the more advanced
Socket-478.
This 423-pin to 478-pin CPU Socket Converter
works for both 0.18-micron Willamette and 0.13-micron
Northwood (the adapter is equipped with an independent
voltage regulator), which makes the novelty a universal
headache remedy for the owners of old Pentium 4 based
systems. Newer Socket-478 motherboards will still
primarily be based on Intel’s 850 and 845 chipsets so
there isn’t much of a reason to upgrade boards other
than to gain CPU support for Socket-478 processors.
This is a really cheaper way out than buying a new
mainboard which would only have a different CPU socket.
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