Intel Core
Apple’s New Mac Book Pro With Core 2 Duo 2.33 Ghz
Apple says that its latest Mac Book Pro laptops, equipped with Intel Core 2 Duo processors in place of the Core Duo chips that powered the first generation of the family, its deliver performance that is up to 39 percent faster. Based on past experience with the company’s benchmark boasts,
The Apple Mac Book Pro Core 2 Duo 2.33 GHz (T7600), with two independent processor cores, a 4 MB shared on chip level 2 cache, a 667 MHz front side bus, 2.0 GB of 667 MHz PC2-5300 DDR2 SDRAM, a 160 GB hard drive with Sudden Motion Sensor technology, and an 8X dual-layer DVD±RW/CD-RW SuperDrive. It also includes an ATI Mobility Radeon X1600 graphics processor with 256 MB of GDDR3 video memory and dual-link DVI functionality, and a 17 widescreen 1680x1050 TFT active-matrix display (glossy display option available).
Some special features of MacBook Pro Core 2 Duo/2.33 GHz
Bigger caches and faster graphics
The new MacBook Pros look virtually identical to their predecessors, and the overall structure of the family hasn’t changed: there’s still a single standard 17-inch model priced at $2,799.The new chip’s SSE3 Vector Engine, used in some audio, video, and scientific applications, now processes 128 bits of data at a time, compared to 64 bits in the Core Duo chip. Finally, although Apple won’t disclose the details, its engineers have also squeezed out a little extra performance by tweaking the workings of the ATI Radeon X1600 chip that handles graphics processing in the Mac Book Pros.
Battery life unchanged
Some early speculation about the Core 2 Duo predicted that, in addition to boosting performance, it would cut power consumption. Those reports turned out to be untrue—battery life in the new Mac Book Pros is about the same as in the previous generation. In my tests with the 2.33GHz Core 2 Duo version of the 17-inch Mac Book Pro, I actually did a little better (2 hours and 35 minutes) at DVD playback. I managed only 3 hours and 9 minutes of wireless productivity.
More memory, bigger drives
Beyond the processor, Apple has doubled the RAM in each standard Mac Book Pro configuration: the 17-inch model and the 2.33GHz 15-inch one model come with 2GB of RAM—a pair of 1GB SO-DIMMs—while the base 17-inch model has a single 1GB SO-DIMM. As our benchmark results suggest, going from 1GB to 2GB of RAM has only a modest effect on speed, but it enables you to keep more big applications—or more operating systems, if you use Desktop virtualization software—open simultaneously without running into delays when you switch among them.
The 17-Inch MacBook Pro Core 2 Duo systems have much of the same connectivity as the replaced models -- Airport Extreme (802.11g), Bluetooth 2.0+EDR, Gigabit Ethernet, two USB 2.0 ports, a FireWire 400 port, optical digital audio in/out, DVI out, and ExpressCard/34. However, much to the delight of video graspers, the 17-Inch models now include a single Firewire 800 port as well. The 17-Inch model shares the same ports as its predecessor -- which include all the ports of the 17-Inch Core 2 Duo model -- as well as a third USB 2.0 port (both 17-Inch models have a Firewire 800 port). Each system also includes an integrated iSight video camera and, by default, a 5400 RPM hard drive.
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What Are The Benefits Of Mobile Dual-Core Processors?
When browsing through different notebook computer models, you are guaranteed to encounter the "Intel Core 2 Duo" or the "AMD Turion 64 x2" labels. These labels indicate dual-core processing technology for mobile computing. Multi-core processing is the buzz-word of the day, but what does it mean for you?
Mobile Dual-Core Processors
Mobile dual-core processors refer to a processor system consisting of two independent processor cores combined in one integrated circuit (IC) or, as industry professionals say, in a single die. Basically, mobile dual-core processors place two central processing unit (CPU) cores in one processor. Dual-core processing was first applied to desktop computing and home console gaming, but it was quickly adapted for mobile computing. As expected, AMD and Intel both have numerous mobile dual-core processing options available.
Dual-core processors have a different architecture than twin- or double-core processors. Dual-core processors refer to a processing system where two processors are integrated in one IC die. On the other hand, twin-core processors refer to a processing system where two independent processors - each on its own die - are directly plugged into the motherboard.
Each of the processors in a dual-core processor has a built in cache (Level 1 cache) so each has its own potential for speedy and efficient recovery and processing of frequently used instructions. More than that, however, there is a Level 2 cache, in the same IC board, which the two processors share in Intel's Mobile Core 2 Duo chipsets (either 2 or 4 MB); In AMD's Turion 64 x2 chipsets, each of the two processor has a dedicated 512 kb cache per core. The L2 cache is the processor's backup cache in case the L1 cache is not enough.
The Benefits of Mobile Dual-Core Processing
The foremost advantages of dual-core processors are speed and efficiency. Instruction processing and data retrieval are handled by two processors, so more processing speed can be achieved without overheating either processor. The fact that the two processors have their own easily accessible L1 cache also assures more speed. Furthermore, especially in the case of the Intel Core 2 Duo where the L2 cache is shared, full L2 cache memory can be quickly utilized by either one or both processors as the need arises.
In a nutshell, a notebook computer which has a dual-core processor is assured of fast and efficient processing performance with a greatly reduced risk of overheating. Multi-tasking is much improved. Dual-core processors also consume less power than twin-core processors.
One other benefit of dual-core processors in notebook computers is the possibility of lighter and smaller notebooks that can approximate desktop PC performance. Since two processors share one IC die, one can enjoy the benefits of dual-CPU processing without having to deal with extra bulk.
It is important to note that users of older programs will not see any benefit from their dual-core processors if they only run one program at a time. Older programs were not designed for dual-core processing, so they are only able to take advantage of a single core. A dual-core processor still gives considerable advantages in multi-tasking, however, as each core is able to handle a different program, speeding up multi-tasking considerably when compared to a single-core computer.
As time goes on, more and more software developers are developing their products with dual-core processors in mind, so users will see more and more benefit out of their dual-core processors in the near future.
This article may be republished freely as long as this copyright notice and box of resource links are included at the bottom.
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