Разликата между intel centrino duo and pentium dual core
Intel manufactures dual core processors under a number of different architectures.
From the most to least expensive/powerful:
* Core 2 Duo
* Core Duo
* Pentium Dual Core
* Celeron Dual Core
The Celeron Dual Core is limited to 512KB of L2 Cache and has lower Front Side Bus (FSB) and clock speeds than chips higher up on the list. However, it is a very low priced CPU and apparently a good overclocker. The only Celeron Dual Core currently available is the E1200 (January 2008). It has 512 KB of L2 Cache, a clock speed of 1.60 GHz and an 800 MHz FSB.
The Pentium Dual Core is the next step up. With 1 MB of L2 Cache, these chips are still targeted at the cost-conscious. Slightly more expensive and slightly better performing than the Celeron Dual Core. The Pentium Dual Core models are: E2200, E21xx, T23xx, and T20xx. All have 1 MB of L2 Cache, either a 533 MHz or 800 MHz FSB and clock speeds ranging from 1.46 GHz to 2.20 GHz.
The Core Duo chips are dual core cpu’s that have 2 MB of L2 Cache. This is also a 32-bit architecture (Celeron and most Pentium Dual Cores are 64-bit). The Core Duo processors: T2700, T2600, T2500, T24xx, T23xx, T22xx, T2050, L2500, L2400, L2300 (L=Low voltage), U2500, U2400 (U=Ultra low voltage). All have 2 MB of L2 Cache. FSB is either 533 MHz or 667 MHz and clock speeds range from 1.06 GHz(for the U2400) to 2.33 GHz.
Core 2 Duo cpu’s are aimed at both desktop and mobile computers in the mid-range of the processor market. This line of cpu’s have L2 caches ranging from 2MB to 6MB and clock speeds from 1.06 GHz (again, for the Ultra low voltage U7500) to 3.16 GHz. The extra cache and higher clock and bus speeds make these generally more expensive and faster than the Core Duo’s. Intel claims a 25% performance increase between two similarly clocked Core Duo and Core 2 Duo cpu’s (but real world benchmarks pegs 5%-15% as a more reasonable claim).
Intel also manufactures the even more expensive and capable Xeon and Itanium dual and quad-core processors for the high-end workstation and server market.
Intel Centrino Duo is basically an Intel Marketing label to indicate computers that use Intel’s WIRELESS, MOTHERBOARD and a dual-core processor TOGETHER. [sorry, have to get that clear.] So, for example, since the MacBooks use Intel Motherboards and DualCore Intel processors, but have Apple Airport Extreme instead of Intel Wireless cards, they are not Centrino Duo certified.
As for the other 2,
Intel Core 2 Duo is the 2nd iteration of the Core platform, which is the successor to the Pentiums. It’s a new architecture from the Pentiums, which explains the difference in power-efficiency, performance, etc. [basically, it’s better!]
Intel Pentium Dual Core is just a coined-up name for the so-called “successor to the El-cheapo Celeron Processors”, but the difference between a Celeron and a Pentium Dual Core is that one’s Single-cored, while the other is dual-core and hence, a bit more souped-up. To quote Wikipedia:
In 2006, Intel announced a plan to return the Pentium brand from retirement to the market, as a moniker of low-cost Core architecture processors based on single-core Conroe-L, but with 1 MB cache. The numbers for those planned Pentiums were similar to the numbers of the latter Pentium Dual-Core CPUs, but with the first digit “1”, instead of “2”, suggesting their single-core functionality. Apparently, a single-core Conroe-L with 1 MB cache was not strong enough to distinguish the planned Pentiums from other planned Celerons, so it was substituted by dual-core CPUs, bringing the “Dual-Core” add-on to the “Pentium” moniker.