The core of any given CPU has similarities. Specialized technologies also present themselves in processors. Single dual, triple and quad core CPUs have contrasts and common points. AMD and Intel have 64-bit quad core processors. Duo Core would only refer to Intel 32-bit two core processors. There are similarities and differences in using both.
AMD Quads
Third generation server class Opterons, desktop Phenom X4, Phenom II X4 and Athlon II X4 are all quad core. These AMD CPUs are based on K10 microarchitecture. AMD quad-core chips for mobile computers are on the horizon.
Intel Quads
The Core 2 quads for desktop computers offer CPU speeds to 3 GHz, L2 cache size to 12MB and Front side bus to 1333 MHz. This quad is also compatible with socket 775. Other quad families are the i5 and i7. Extreme i7 quads are also available. Xeon server class processors have quad CPUs also. Two outstanding innovations of Xeon quads are QPI bus and Intel Smart Cache.
Mobile Quads
Intel is now offering 10 quad processors for mobile applications. Outstanding features are 12MB of L2 cache and Intel Smart Cache to name just two of the innovations. A CPU is formed on a 45nm process. The processor is also matched for DDR3 type of RAM. The Extreme core 2 mobile quad and the i7 family has the latest technologies.
Duo Core
The Core Duo is boss of the laptop market. There are no Core Duo for desktops. It is a solid performer for 32-bit two core mobile computers. This CPU shares technologies with 64-bit Intel quads, duos and duals. For instance, you will find Enhanced Intel Speedstep Technology on all the quad and duo core processors.
Common Objectives
Multi-core processing is the main area of common ground for Core Duo and quad processors. Processing multiple threads efficiently is what they do best. Efficient memory access is a common goal for servers. AMDs Opteron and Intel's Xeon CPUs can use DDR3 technology.
Differences
Core Duo's 32-bit limitation confines its options. Quad core processors run both 32 and 64-bit.
QPI is not a feature of all quad core Intels. Xeon processors support the robust 2400 MHz QPI bus.
AMD has deviated from normal business practices with its socket compatibility. AMD's processors made for AM3 socket are backwards compatible with AM2 motherboards.
Summary
Core Duo processors can be had well below $100.00. AMD has lowered the price of the Athlon II X4 to less than $100.00. AMD's Phenom II X4 and Intel's quad Q8200 are both in the $170.00 range. All prices are as of 2009.
Multi-threaded applications run better with quad core processors. Processors with two cores qualify as multi-core also. Amazingly, some games and applications are optimized for 32-bit instruction sets, so due diligence is still in order. In the final analysis, the pricing of Core Duo and quads are attractive to individuals and businesses alike.
Tags: core processors, quad core, quad core, quad core processors, 32-bit core, compatible with, Core Core