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Intel Reveals Westmere 32nm Roadmap - TechAmok
Intel Reveals Westmere 32nm Roadmap - [hardware] 06:37 PM EST - Feb,10 2009 - post a comment
Intel has unveiled most of what we wanted to know about
their
32nm "Westmere" processors, and it looks like we have a fair amount to look
forward to. In addition to the fact that we'll be seeing GPU/CPU processors
later this year, the company also threw in a few other surprises, such as the
inclusion of new security-based instructions.
Westmere CPUs will have some of the same perks as their Nehalem brethren.
Those include Hyper-Threading, which will allow each core to juggle two threads,
and Turbo Boost, which will let the CPU shut off one core and clock up the other
to improve single-threaded performance. Intel has also tossed in seven new
instructions for accelerating encryption and decryption algorithms, which should
come in handy for tasks like full-disk encryption in software.
As for the graphics core, Intel said that will be a tweaked 45nm version of its
existing 65nm integrated graphics processor. The smaller process will allow for
higher clock speeds, and Intel claims proximity with the memory controller will
reduce latency and improve memory bandwidth. The firm named reduced latency as a
primary reason for moving the IGP into the CPU package, but that explanation
sounds a tad dubious. (Latency seems like the least of Intel's problems on the
integrated graphics front right now, and "discrete" IGPs from AMD and Nvidia
perform considerably better.) In all likelihood, Intel wants to elbow out other
IGP makers and perhaps give itself the option of upgrading IGP cores without
needing to change CPU cores and chipsets.
Intel boasted that its very first Westmere silicon was capable of running a PC
and booting up, saying this indicates "very robust process health" and a "very
robust product." In fact, Intel showed Westmere-powered desktop and notebook
systems running an operating system and applications after the briefing.
Westmere's precocity is why Intel opted to "de-prioritize" 45nm dual-core
Havendale and Auburndale processors, which means the chips might never launch at
all.
So, that's Westmere. Intel will use Westmere to build two products at first:
Clarkdale on the desktop and Arrandale for notebooks. Intel suggested that both
CPUs will have similar clock speeds and power envelopes as existing mainstream
desktop offerings, and they should retain the Core name, as well. Both Clarkdale
and Arrandale will be dual-core products, and they should hit production in Q4
2009-presumably in time for a launch early next year, although Intel says it
still needs to work out a launch schedule with partners.
A "little later," Intel will follow up with Gulftown, a high-end desktop
processor with six cores and twelve threads. Since it'll be Westmere-based, this
product may have three dual-core processor dice in the same package. Gulftown
will team up with the same X58 chipset as today's Core i7 CPUs.
In the meantime, Intel has another pair of 45nm processors lined up for the
second half of this year: Lynnfield for desktops and Clarksfield for notebooks.
Both CPUs will have four cores and eight threads just like the Core i7, but
they'll be part of a different platform with a new socket and new 5-series
chipsets. Incidentally, Intel said 32nm Clarkdale and Arrandale CPUs will work
with that same platform. The new roadmap says nothing of quad-core Westmere
offerings, hinting instead that Clarkdale, Arrandale, Lynnfield, and Clarksfield
will simply co-exist at different price points until Sandy Bridge-the upcoming
32nm architecture refresh-comes along.
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