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Intel Nehalem to Feature Triple-Channel Memory Controller - TechAmok
Intel Nehalem to Feature Triple-Channel Memory Controller - [hardware] 07:41 AM EDT - Jun,12 2007 - post a comment It
is known that Nehalem as well as Westmere central processing units (CPUs) will
use a new platform architecture and while the company does not directly
state it, the new platform will hardly use processor system busses, but rather
will feature point-to-point serial bus (CSI) similar to Hyper-Transport or PCI
Express. The new CPUs due in late 2008 will feature so-called dynamically
scalable architecture, which means that Intel will be able to tailor its
processor designs according to needs of various market segments.
In particular, Intel already announced that, among other things, it would be
able to scale and configure caches, interconnect controllers as well as memory
controllers. Already now Intel can reduce or increase cache sizes for various
processors without many problems, whereas AMD can enable or disable
Hyper-Transport links within its processors depending on their positioning (e.g.
AMD Opteron processors for multi-processor servers have three HT links, whereas
Athlon 64 for 1P machines have only one HT link). But Intel wants to go even
further and scale the number of memory controller channels. According to PC
Watch web-site, the top Nehalem processor code-named Bloomfield with four cores
will have triple-channel DDR3 memory controller, whereas slightly less advanced
may have less channels. Three memory channels supporting PC3-12800 (DDR3
1600MHz) memory would provide approximately 38.4GB/s memory bandwidth, up
significantly from about 21.3GB/s memory bandwidth available today. Given that
in 2009 Intel plans to release Nehalem processor with built-in graphics core,
triple-channel memory controller may help to keep performance in 3D games on
relatively high level.
In other news, Intel
plans to launch two new entry level chipsets in Q3 this year to replace the
current 946GZ/PL and 945G chipsets. Intel G31 Express and P31 Express support
the current Core 2 Duo and Quad processors as well as the upcoming 45nm
Yorkfield and Wolfdale. G31/P31 supports 1066FSB in Q3'07 and 1333FSB in Q1'08
upon validation, DDR2-800 memories up to 4GB and allows one x16 PCIe slot for
discrete graphics. However, G31/P31 is paired up with older ICH7 series. For
G31, it comes with integrated Intel GMA 3100 like G33, Q33 and Q35 chipsets. |
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