Apple OS X Snow Leopard review: first look
Apple's Snow Leopard is a major overhaul, but also feature light. We take a look to see if it's worth the £25 sticker price.
As operating system releases go, Apple's Snow Leopard is a tricky one to judge. On one hand it can be viewed as offering a disappointing smattering of improvements, but it also falls into the major rewrite' camp.
The reason for this is simply because Snow Leopard doesn't offer a long list of headline enhancements, but rather most of the good work has been done stealthily, under the hood.
Let's talk about two of those enhancements. Firstly, there's the not insignificant fact that all major applications have been written to be natively 64-bit. Intel processors in Macs have always been natively 64-bit, but with much of the software not optimised for it this offered limited benefit.
Additionally, 64-bit computing offers more scope for security features such as Execute Disable Bit.
Hand in hand with this is another purely under the hood feature in the guise of Grand Central Dispatch. A typically Apple name, it's actually a pretty good descriptor of what this system service does it manages the transactions of software threads between processor cores. We all know that multiple cores makes sense, and that adding more cores gives you far great potential performance increase at a particular power consumption compared to trying to boost a single core. But getting that performance out of the apps is difficult.
Apple says the Grand Central Dispatch will make it easier for developers to create multi-threaded aware applications that will therefore take advantage of those extra cores. Macbooks only have two cores now, but there are eight in the desktop Xeon Mac Pros, and it won't be too long before quad-core comes to laptops. However, developers will still have to learn to use Grand Central Dispatch, so it's something that means your Mac will get faster over time, as future applications are written using it.
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