First, quad-core processor introduction
A quad-core processor is a processor core with four functions on a single processor based on a single semiconductor. In other words, four physical processor cores are integrated into one core. Enterprise IT managers have also consistently sought ways to improve performance without increasing the actual hardware footprint. Multi-core processor solutions address these needs, providing greater performance without the need to increase energy or real space.
Quad-core processor features
Whether you're coding, rendering, editing, or processing high-definition multimedia content, whether you're sitting in the office or on the go, desktops and laptops with Intel CoreTM2 quad-core processors can handle your most complex application. In addition, you can experience outstanding built-in Intel technology with these processors.
Wide dynamic execution
Intel's wide dynamic execution technology saves execution time and energy efficiency by submitting more instructions per clock cycle
Intelligent power management
Intel Intelligent Power Management, designed to deliver higher energy efficiency
Smart memory access
Intel Intelligent Memory Access improves system performance by optimizing the usage of available data bandwidth
Larger capacity
The larger Intel Intel Smart Cache technology is optimized for multi-core processors with higher performance and a more efficient cache subsystem.
Advanced digital media enhancement
Intel Advanced Digital Media Enhancement Technology (Intel Clear Video Technology) dramatically accelerates performance by running Intel SIMD Streaming Instruction Extension (SSE/SSE2/SSE3) instructions, accelerating the speed of a wide range of multimedia, encryption, scientific and financial applications.
Intel, deploying the new Intel SIMD Streaming Instruction Extension 4 (Intel SSE4) instructions, provides better multimedia performance and faster high-definition video editing and encoding speeds.
Virtualization technology
Intel Virtualization Technology (Intel VT); provides greater security, manageability, and utilization.
Future ready, dedicated to highly threaded programs with powerful Intel multi-core technology.
Higher energy efficiency
Utilizing enhanced AMD PowerNow!TM technology and innovative CoolCoreTM technology, AMD Quad-Core AMD Opteron processors are the most energy-efficient server CPUs from AMD. By reducing the energy consumption of your IT infrastructure, these innovations reduce total cost of ownership (TCO), data center power requirements, and cooling costs.
Optimal virtualization
The AMD Quad-Core AMD Opteron processor based on Direct Connect Architecture supports industry-leading virtualization platform efficiency. AMD's Quad-Core AMD Opteron processor provides AMD VirtualizaTIon TM (AMD-VTM) technology with a new feature - fast virtualized indexing that enhances the performance of virtualized applications and improves switching efficiency between virtual machines. The ability to run more virtual machines and accommodate more users on each system maximizes virtualization consolidation and energy savings.
Investment protection
Utilizing AMD's common core strategy and unified interface technology, AMD Quad-Core AMD Opteron processors are designed to protect your IT investment and simplify IT management by minimizing the transformation of your software and data center infrastructure. AMD plans to implement a consistent roadmap and time-sensitive migration to help you lower your IT total cost of ownership.
Excellent performance
AMD Quad-Core AMD Opteron processors deliver the best multi-threaded application performance. Starting with a true quad-core design (four cores on a single die to share data more efficiently), an enhanced cache structure and integrated memory controller are added to keep the processing power of multi-threaded applications. The AMD Quad-Core AMD Opteron processor delivers exceptional processing power while also improving performance per watt while increasing IT responsiveness while maintaining cost. AMD Opteron processors simplify your IT management with industry-leading performance and performance per watt, and support stable, long-term solutions as they are today and in the future.
Second, eight core processor introduction
The eight-core processor is a new processor from Intel. Shannon Poulin, director of product marketing at Intel's server platform team, said the processor targets four-socket servers. Each physical core can run two threads simultaneously, providing 64 virtual processing cores on the server.
The 8 cores seen on the MCM, 4 of which are true Power5 chips, and the other 4 are L3 caches.
Third, the difference between cpu quad-core and eight-core
1, quad-core processor and eight-core processor
Quad-core processors and eight-core processors still have to be branded, namely AMD and INTEL.
Let me talk about AMD:
Generally, the quad core is four threads and the eight cores are eight threads;
Generally, the quad core L2 cache is 4M and the 8 cores are 8M.
Quad-core power is generally lower than 8-core power.
INTEL series:
Generally, the quad core is 8 threads and the 8 cores are 16 threads;
Generally, the quad-core three-level cache is 8M and the 8-core is 16M;
Quad-core power consumption is generally lower than 8-core power consumption, and overall power consumption is lower than AMD;
The performance is stronger than AMD, and the 4 cores are basically equivalent to the AMD8 core.
3, dual-core quad-core
The quad core is composed of two dual cores, each of which is shared by 4M L2.
From a theoretical point of view, when both of them are not fully loaded, the results should be similar. When both parties reach full load at the same time, the score of the quad core should be double that of the dual core.
The maximum amplitude of the physical quad core relative to the physical dual core is about 80%, and the maximum amplitude of the hyperthreaded quad core relative to the physical dual core is about 40%, and the difference between the two is about doubled.
2, three core quad core
The cache advantage of the three-core processor is more obvious. Although a core is lost, the shared L3 cache is not affected, but it was originally shared by four cores and became three. Therefore, the L3 cache capacity that each core can access can be increased by 8.33 when the system is fully loaded. %, which helps improve the performance of cache-sensitive programs. In addition, the penetration rate of quad-core processors is still quite low (according to Mercury Research, less than 2% of desktop processors shipped in the second quarter of 2007 are quad-core), and applications are not sufficiently optimized for multi-core optimization. And the three-core architecture is no stranger. The Xbox 360 mainframe is the three-core IBM PowerPC.
Fourth, summary
In terms of performance, the eight-core processor does have higher performance than the quad-core processor, but it is considered according to individual needs.
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