How come intel dual core processers are being sold for under 200 while core duo are being sold for hundred?

Question

i thought dual core and core duo r the same. so how come processors that are branded dual core(pentium d) are being sold for less than 200 while core duo are sold for hundreds eg core duo 2.66 for $500 and pentium d 3.2 for $ 224

Answer 1

Well so far we have one book being written, and one guy telling us something is evident even though that something isn't even true. Okay the reason is that the Core 2 Duo is based on totally new architecture that is better. The Pentium D has two cores, but is still based on the original Pentium 4 architecture that is over 4 years old. Just take a look at these benchmarks: http://www23.tomshardware.com/cpu.html and see how much better the Core 2 Duo E6700 is than the Pentium D 940 (the one you were referring to)

Answer 2

The reason the core duo 2.66 sells for 500 and the pentium d sells for 224 is because the core duo is just one cpu that is the top of the line where as the pentium d is two low quality cpu's

Answer 3

bcoz

Intel released the first Pentium D products
(code-named "Smithfield") on May 26, 2005, with clock speeds of 2.8, 3.0, and 3.2 GHz. The chips carried model numbers of 820, 830, and 840 respectively. An 805, clocked at 2.66 GHz with a 533 MT/s bus, appeared in early 2006.


(Core Duo)
contains 151 million transistors, including the shared 2 MiB L2 cache. Yonah's execution core contains a 12 stage pipeline, forecasted to eventually be able to clock to 2.33–2.50 GHz of maximum frequency.

Advantages and shortcomings of (Core Duo)
In many categories of performance (which support both cores), Yonah represents an uncharacteristically large improvement over its immediate predecessor:

two computational cores with no significant increase in power consumption
The shortcomings of Yonah are largely inherited from previous Pentium M architectures:

high memory latency due to the lack of on-die memory controller (further aggravated by system-chipset's use of DDR-II RAM)
poor Floating Point Unit (FPU) throughput due to the smaller number of FP units in each CPU core.
no 64-bit (EM64T) support
same or even slightly worse "performance per watt" in single threaded applications compared to its predecessor.
The Yonah platform requires all main-memory transactions to pass through the Northbridge of the chipset, increasing latency compared to the AMD's Turion platform. This is a weakness shared by the entire line of Pentium processors (desktop, server, and mobile.) However, application tests show that Yonah's L2-cache system is quite effective at hiding main-memory latency from the execution core, thus diminishing the impact of that latency on real-life performance.

Many feel that Yonah's lack of 64-bit support will be a significant limitation in the future. However, support for 64-bit operating systems is currently limited in the consumer retail market (the only available consumer retail 64-bit operating systems are Mac OS X "Tiger", Windows XP 64-bit Edition and some Linux distributions), a situation unlikely to change until the releases of Mac OS X "Leopard" and Windows Vista in early 2007. Also, few laptops support more than 2 GB of RAM, negating the memory aspect of 64-bit support. Hence, many people believe that for its intended market (mobile and laptop PCs) the lack of EM64T seems inconsequential at the moment.

The Sossaman processor for servers, which is based on Yonah, also lacks EM64T-support. For the server market, this has more severe consequences, since all major server operating systems already support EM64T, and the upcoming Exchange 12 even requires a 64-bit processor to run.

For these reasons, some consider Core to be a temporary stopgap measure, bridging the brief interregnum between the Pentium M series and the 64-bit Intel Core 2 CPUs, which shipped in 2006.

According to Mobile Roadmaps from 2005, Intel originally seems to have focused more on the power consumption of its p6+ Pentium M and Core processors and aimed to reduce it by 50% with Yonah. Intel originally planned to continue offering desktop (NetBurst) derivations with reduced power consumption for mobile performence solutions and only use p6+ Pentium M/Core processors as medium-to-low performance, low power consumption parts. The policy was apparently changed later on to trying to keep the power consumption more or less at the same level and increasing the performance by as much as possible. This change in policy probably resulted from Intel's changed policy of abandoning NetBurst and replacing it with p6+ Pentium M/Core. This meant a shift in priority of the p6+ Pentium M/Core more towards high performance and less towards low power consumption.


Implementation of Pentium D.
In a single-processor scenario, the CPU-to-north bridge link is point-to-point and the only real requirement is that it is fast enough to keep the CPU fed with data from memory.

When assessing the Pentium D, it is important to note that it is essentially two CPUs in the same package and that it will face the same bus contention issues as a pair of Xeons. To use a crude analogy one could say that instead of using a single cable between CPU and north bridge, one must use a Y-splitter. Leaving aside advanced issues such as cache coherency, each core can only use half of the 800 MT/s FSB when under heavy load.

Going from a 533 MT/s FSB to an 800 MT/s FSB a 3 GHz Pentium 4 achieved a speed increase of up to 12%, typically around 6%.

Answer 4

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Answer 5

Because one was using the old 32 bit technology, while the other uses the 64 bit technology that processes twice as much ?

I thought that was evident.

Cheers

Answer 6

only evident if your a Neeeeerd!!!