Performance Index 64: CPU Test 4+

GPU benchmark & system monitor

Impulsory, LLC

    • 3.5 • 57 Ratings
    • Free
    • Offers In-App Purchases



The Performance Index 64 app is designed to compare your Mac with other macOS devices and evaluate performance and efficiency of different configurations.

Since we are talking about a 64-bit system, we took the very first 64-bit computer designed by Apple as a conventional unit - the legendary Power Mac G5 first introduced by Steve Jobs in June 2003.

Powered by the PowerPC processors, the Power Mac G5 was so effective and energy efficient that in autumn 2003 a group of enthusiastic students introduced the System X supercomputer, combined with 1100 of such desktops. This supercomputer became a real technological breakthrough, taking third place in the TOP-500 rating.

Nowadays, such a result would be impossible. If we would have combined a similar configuration of 1100 top 64-bit desktops, the resulting supercomputer wouldn’t even be included in the TOP-100 of the world ranking.

With the help of our application you can find out how much of the legendary Power Mac G5 your Mac contains. Then, you can compare your Mac with the powerful Mac Pro powered by Intel and Macs with the new Apple M1 chip.

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Terms of use:

What’s New

Version 4.2.12

This update fixes some bugs we found in a previous release

Ratings and Reviews

3.5 out of 5
57 Ratings

57 Ratings

EJH237 ,

Horrible business model!

I just wanted to see how much faster my new Studio was to my old iMacPro... If this is you: when it tells you this could take a long time depending on your configuration, DON'T click stop... let it run. That alert has no smarts behind it, and just always displays. Apparently after 3 times (trying to get a quicker test) i realized that's a dumb alert, and I ONLY GET 3 TESTS without paying. Additionally, as an Apple dev myself, i wonder WHY this app is 1GB? Took "forever" to install...

Monthly? seriously? just do an unlimited simple tests and sell an IAP purchase for more complex. Really, how many people subscribe? or stay subscrubed? or, more than likely, accidently subscrube, win for you.

Developer Response ,

Hello! Thank you for leaving a review. We are sorry that you're disappointed with our app. We will make sure to take into account all your remarks on the performance and usability, as we're always working hard on making the user experience better with every update.

schmeggy929 ,

Garbage App!!!

No free trial, no buy once. I am tired as well as many people these days with subscription based apps. Why would any buy your app when the first time you open app, you cannot continue until you buy the subscription. No idea if the app works or if I will like it and use it. I don't get a choice. These Developers these days should be a shamed of themselves.

wefkvkw;efv;kwb;kfrvb;kwrfv ,

Don't waste your time, disk space, and money.

This is a large application that tries to lock you into a monthly $9.99 subscrition just to try it out. Who needs to check every month?

App Privacy

The developer, Impulsory, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Some in‑app purchases, including subscriptions, may be shareable with your family group when Family Sharing is enabled.

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