These prices are for Pakistan exclusively and are in rupees.
I have two links to share with you.
Hafeez Centre Online Price List contains prices of Motherboards, Hard Drives, Sound and VGA Cards, Processors and much more…
With Price Calculator you can choose hardware for a complete computer and than have quotation of price of PC.
Hafeez Centre Lahore Pakistan Live Computer Rates
Price List
Computer Price Calculator
Price Calculator
If you are planning to buy a new PC than Core™2 Duo is definately the best next generation hardware choice. It is said that performance of Pentium 4 - 3.4 GHZ is equal to 1.8 GHZ Pentium Core™2 Duo Processor.
Pentium D is nothing but 2 Prescott Processors side by side … runs very hot, not a good OverClocker.
Intel Core 2 Duo processors are next gen processors from Intel on 65 nm platform, developed from Ground up with new Architecture called Core, so they are whole new Processors just Jump like Pentium 2 to Pentium 3 or Pentium 4.
Intel Core™2 Duo offers real time multi-tasking performance and will replace all previous Pentium processors.

Lets See What Microsoft says about Core™2 Duo
Maximum everything. Energy-efficient performance. Multimedia power.
Based on revolutionary Intel® Core™ microarchitecture, the breakthrough Intel® Core™2 Duo processor family is designed to provide powerful energy-efficient performance so you can do more at once without slowing down.
With Intel® Core™2 Duo processor, you’ll experience revolutionary performance, unbelievable system responsiveness, and energy-efficiency second to none. And, you won’t have to slow down for virus scan, multiple compute intensive programs, or multimedia downloads, these desktop processors are up to 40 percent faster with improved energy-efficiency.
Features and benefits
Delivering the best overall performance. Period.
With Intel Core 2 Duo processors powering your desktop and laptop PCs you’ll get the latest arsenal of performance-rich technologies, including up to 4MB of shared L2 cache, up to 1333 MHz front side bus for desktop, and up to 800 MHz front side bus for laptop, you’ve got the future of computing now, and only from Intel:
Intel® Wide Dynamic Execution, enabling delivery of more instructions per clock cycle to improve execution time and energy efficiency
Intel® Intelligent Power Capability, designed to deliver more energy-efficient performance and smarter battery performance in your laptop
Intel® Smart Memory Access, improving system performance by optimizing the use of the available data bandwidth
Intel® Advanced Smart Cache, providing a higher-performance, more efficient cache subsystem. Optimized for multi-core and dual-core processors
Intel® Advanced Digital Media Boost, accelerating a broad range of applications, including video, speech and image, photo processing, encryption, financial, engineering and scientific applications
More About Intel Processors
Intel Core Processor Family
Intel Pentium Processor Family