Filter
Top Products
Overview
Intel® Core™ Duo is the dual-core version of Intel's Pentium® M
processor for notebooks. It is part of the new mobile technology offering
from Intel code-named Napa. Unlike Intel's first dual-core designs for
desktop PCs, Intel Core Duo is a much more integrated design that
shares storage and power management resources within the chip. Here
is a quick overview of what this new CPU offers:
Intel's first dual-core optimized CPU
667 MHz front-side bus
Built on new 65 nm technology
Two mobile optimized execution cores in a single processor
Parallel threads executed on separate cores with dedicated CPU
resources
Intel also implements a host of new features into the new Intel Core Duo
chip. These features include the following:
Intel Smart Cache — This is an enhanced version of handling the L2 cache from the previous dual-core desktop
processors that allows both cores to access the same L2 cache.
Intel Dynamic Power Coordination — This feature coordinates the power states between the two cores, enabling
them to each individually step down activity as required.
Intel Digital Media Boost — Digital Media Boost provides enhancements to gaming, video streaming, digital music
and photography, as well as other multimedia applications.
Intel Advanced Thermal Manager — New thermal sensors and management technology allows for enhanced
accuracy with dual-core optimized thermal management.
Intel Virtualization Technology — This delivers a hardware-assisted robust virtualization and manageability
solution. Not supported on Dell™ systems at this time.
L2 Cache
The desktop version dual-core Pentium D processor uses
separate 1 MB cache memory banks dedicated to each core. In
the Intel Core Duo processor, a single 2 MB cache memory
bank is available to both cores, reducing the chance that data
must leave the chip to be temporarily stored in a system's main
memory bank. This means that one core can store a piece of
data in the cache that might be needed later by the other core,
and the other core can access that data without having to leave
the chip. The larger storage capacity allows Intel Core Duo
processor's cores to spend less time navigating through the
front side bus and more time executing instructions, which
dramatically improves performance.
The shared cache design also allows Intel to eliminate some of
the disadvantages of its front side bus design, which many
analysts see as a bottleneck in the dual-core era. The front side
bus is the connection between the processor and the main
system memory via a chipset. On Intel's chips, this interface is
located on the chipset, farther away from the CPU. Intel plans
eventually to move to a different design, but in the meantime it has been raising the speed at which its buses move data to
cope with the increased activity of two processor cores. Intel Core Duo processor's two cores share a single front-side bus
running at 667 MHz.
Hyper-Threading vs. Dual-Core
Dual-Core processors provide a greater advantage over Hyper-Threading. In Hyper-Threading, parallel threads are
executed on a single core using shared resources. With the Dual-Core solution, parallel threads are executed on separate
cores with dedicated resources. The following graphic helps explain this:
Core Duo
One execution core viewed as
two logical cores by software
Two execution cores
on a single processor
Página
76
de
145
Dell
-
Latitude™ D620
-
Printer
-
Friendly Format
22/02/2010
https://dcse.dell.com/SelfStudy/Foundations_2007/Foundations_2007_Portables/Portable
...