In a rare example of the PC's performance tuning culture translating to the Mac, a new utility has surfaced that lets Mac Pro owners overclock their systems beyond Apple's official specifications.
The German edition of ZDNet has posted a utility dubbed ZDNet Clock Tool that allows owners of the Intel-based Mac workstations to push the clock speeds of their Xeon processors significantly higher — with leaps from 2.8GHz to 3.24GHz for more recent systems.
Sep 18, 2018 Hi guys! I have an iMac late 2013 with the NVIDIA 780M graphics card. As I read on multiple sources, Apple likes to underclock their GPUs in OS X, to avoid the fan beeing noisy. Is there a possibility to change the clock of the GPU to normal under OS X? There used to be tools like Zeus that. Oct 30, 2013 Overclocking increases heat output, and laptops are hot enough already. Having an overclocked laptop play a game for 1 hour+ is a bad idea, and will greatly decrease the lifespan of at least the battery, but also the computer itself. Jul 04, 2019 RAM Overclocking. When you are overclocking the RAM you need to provide extra voltage, but there is a limit to how much you can overclock the memory. Too much overclocking can result in damage to the computer. The BIOS gets altered in case of both types of overclocking. Supporting software along with relevant hardware can help overclock RAM.
Proven to work by those in the Mac community, the approach also increases the speed of the system bus and the memory as a result, though Apple's choice of hardware ironically suits it better to the process than many gaming-oriented parts for Windows computers: as the Mac Pro must use RAM with error correction, it prevents an excessive overclock from ruining data on the hard drive by making sure that only valid data leaves system memory.
The clock difference is enough to provide a tangible 'free' upgrade in performance to the systems, though this isn't always measurable. Memtest for mac sierra pro. In synthetic tests such as Geekbench, the software can incorrectly report similar performance even though timing the results proves that they're above what would happen at Apple's officially rated clock speeds.
However, unlike most overclocks, the technique requires a certain degree of trickery and carries an extra amount of risk. The current version of the tool works by loading a kernel extension into Mac OS X on boot that forces the clock speeds upwards immediately after the system starts. Without it, the Mac Pro would immediately revert back to its stock speeds the moment the system is rebooted, according to ZDNet. The initial beta app can also sometimes be overridden when the Mac comes out of sleep mode.
Like most overclocking, the technique is also limited by the nature of the hardware. At present, the German experimenters are unable to push past the 3.24GHz barrier without an inherently unreliable system. The faster processor speeds eventually overwhelm the memory and prevent it from correcting every error, triggering a kernel panic in Mac OS X that forces a reboot. High-performance third-party memory that operates above spec is described as the only real solution to this problem.
System time also falls out of sync without the expected clock rates and can't be corrected even by calibrating the computer online, the testers say. Instead, a reboot is necessary to at least temporarily provide accurate timekeeping.
While very much a beta version and potentially dangerous — the possibility exists that the system won't start up correctly — the utility is the first known that modifies core system performance on Intel-based Macs. Until recently, most overclocking utilities for Macs have dwelt on ramping up clock speeds on video cards to eke out more 3D performance for games. Gif builder for mac os x.
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About Mac Scripting
Scripting allows you to automate complex, repetitive, and time-consuming tasks by writing scripts that interact with apps, processes, and the operating system. A script consists of a series of statements, each of which performs a specific operation. These statements work together to automate tasks. Through scripting, you can create powerful workflow solutions that enhance productivity, reduce errors, save time, and save money.
There are many different scripting languages. On the Mac, the primary ones used for automation are AppleScript and JavaScript.
Note
Theme mac os x for android. OS X also includes Automator, an app for building workflows that run prebuilt, configurable actions to perform tasks in apps and throughout the operating system. Automator doesn’t require you to write any code, but can be extended through scripting. Because Automator uses preconceived actions and operates in a linear manner, it’s more limited in functionality than scripting. Automator is great for performing simple tasks involving a small number of sequential steps or apps. Scripting is a better choice for performing advanced, branching, or complex tasks.
Kismet os x. Python and Perl are other examples of scripting languages.
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AppleScript
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AppleScript is a mature scripting language developed by Apple. It’s relatively easy to learn in relation to other scripting and programming languages, has been around since System 7.1, and has been widely adopted in both enterprise and personal workflows. While the AppleScript scripting language uses an English-like terminology which may appear simple, it is a rich, object-oriented language, capable of performing complicated programming tasks.
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The core fundamentals of AppleScript are described in AppleScript Language Guide, as well as in numerous third-party books.
JavaScript
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JavaScript is a popular cross-platform scripting language. Historically, it’s been most commonly used to implement features on websites and in web-based apps that are accessed through browsers. However, some apps implement JavaScript-based scripting models for the purpose of automation. In OS X 10.10, JavaScript became a peer to AppleScript in OS X. There are many third-party websites and books that document the JavaScript language.
For fundamentals on JavaScript as a scripting language for automation in OS X, see JavaScript for Automation Release Notes. For information about the JavaScript language, see Mozilla’s official JavaScript documentation.