Prescott, hit the streets in the 4th quarter of 2003. The Prescott
processor
is the code name for a generation of IA-32 processors. It is expected at
3.2GHz and will eventually scale up into the 5GHz region.
Although based on the NetBurst architecture similar to its Pentium 4
predecessors, Prescott nevertheless features a slew of enhancements to its
micro-architecture with improved Hyper-Threading Technology, advanced
power
management, 13 new instructions and larger caches.
Intel is fabricating the Prescott on huge 300mm wafers with its cutting
edge
90-nanometer (90nm) strained silicon process. The 90nm process enables
Intel
to pack in more cache into Prescott. Prescott double previous Pentium 4
cache
figures with 16K of L1 and a whopping 1MB of L2 (as a comparison, the
current
L2 record holder for is AMD's Barton core with only 512K of L2). In order
to
fit such a large amount of cache into the core, Intel added a 7th copper
layer paving the way for >100M transistor counts. The 90nm process also
includes certain features which allows for higher clock frequencies and
lower
voltages in the neighborhood of 1.2V. The larger cache will aid the
processor
in pre-fetching and storing data close to it for faster processing.
Intel Desktop Processor Roadmap
In true Intel fashion, Prescott has 13 additional instructions added to
improve application areas such as in multimedia and gaming. Dubbed the
Prescott New Instructions (PNI), the additions speed up FP to integer
conversions, complex arithmetic, video encoding, enable SIMD FP operations
in
AOS format and thread synchronization. The technology is compatible with
existing software written for Intel architecture microprocessors and
existing
software should continue to run correctly, without modification, on
microprocessors that incorporate PNI. Of course, Prescott includes MMX,
SSE
and SSE2 extensions as well.
After its initial release in Northwood, an improved Hyper-Threading
Technology is now a mainstay on Prescott's feature list. HT will
definitely
benefit from the larger caches as well as the new thread synchronization
instructions. After its HT lackluster introduction in Northwood, Intel is
probably banking on Prescott to show HT's true potential. Perhaps by then,
more applications will be optimized to take advantage of this technology.
Prescott also includes support for Intel's LaGrande initiative which calls
for protected execution, memory and storage. It is believed that LaGrande
and
Microsoft's Palladium technology will work together to increase the level
of
computing security. LaGrande would be implemented through processor
extensions and it is left to be seen if the initial offering of Prescott
will
have it enabled.
In line with Intel's 865 (Springdale) and 875P (Canterwood) family of
chipsets, Prescott debuted on 800 MHz FSB with DualDDR333 and DualDDR400
support. Prescott platforms are expected to pack a punch in term of
peformance. Following this, Intel is expected to unveil its Tejas
processor,
the successor to Prescott in 2004.
Now all this means nothing to you if the motherboard cannot support it.
As with all PC components newer generation items [CPU, RAM, Display Chips
etc] are designed to be better faster and cheaper than their predecessors.
Don't get too caught up in the hype, just buy what is compatible with your
existing hardware or else upgrade.
:
Make sure the board supports Prescott CPU's
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Vote Quimby
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I am looking at a P4 processor (478 socket) to go with an Intel board.
What difference does it play for the type of Core and the mobo? The
Core for
the processor I am looking at is Prescott. Are they any compatibility
issues
I should be aware of with the mobo?