Apple Event: May 7th at 7 am PT

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

How to get FCPX to use all my RAM?

FCPX is running very slowly, especially when running background rendeing/prerendering. This is very strange as I have the LATEST iMac with 3.4 GHz Intel Core i7 and 16gb of RAM. I thought that maybe FCPX wasn't set to using all or most of my RAM howerver do not know how to check or change it? Does anyone know? Alternitivly does anyone know how to make FCPX run faster and render faster? Thansk very much!


Cheers,

Sam

OS X Mountain Lion (10.8.3)

Posted on Jun 16, 2013 10:01 PM

Reply
38 replies

Jun 18, 2013 5:38 AM in response to sbell1

Have you done the test Russ has suggested?


A 3 minute project should export in just a few minutes.


If you haven't already done it, humour me by trashing the preferences.


Many weird things happen as a result of corrupt preferences which can create a vast range of different symptoms, so whenever FCP X stops working properly in any way, trashing the preferences should be the first thing you do using this free app.


http://www.digitalrebellion.com/prefman/


Shut down FCP X, open PreferenceManager and in the window that appears:-


1. Ensure that only FCP X is selected.


2. Click Trash


The job is done instantly and you can re-open FCP X.


If you get no joy with that, take a look at these 3 troubleshooting articles:-


http://support.apple.com/kb/TS3893


http://fcpx.tv/troubleshooting.html


http://www.lafcpug.org/Tutorials/basic_fcpx_troubleshooting.html

Jun 18, 2013 9:53 AM in response to sbell1

Is your external drive a USB drive? You could be running a slow USB drive.


I have roughly 20 projects ranging from 30 seconds to 25minutes on three different external drives. After opening a 20minute project FCPx shows it is using 2.25GB of Real Memory. I've never seen FCPx use anything like 10GB, let alone 32. I have 24.


I strongly suspect your hard drive or a bad cable but it might also be that you have some nasty program like Norton Utilities or MacKeeper running.


If you have room on your internal drive, use FCP to move a project and event to your internal drive. Disconnect the external drive and reboot. Is it dramatically different?


It's possible the problem is some whacky format, but your iMac should play normal AVCHD without optimizing. Mine does without a hiccup.


If your hard drive is full that could also be a problem. There are so many possibilities. By transferring some footage to your internal drive you can get an idea if it's possibly due to the external drive. If you still have problems, it's probably software based (but not for sure).

Jun 18, 2013 4:59 PM in response to Ian R. Brown

Well I was looking at the system requirments for FCPX and my computer is more than capible howerver I was unsure of what the following ment. Maybe someone could explain them for me-

  • Broadcast monitoring of video and audio with third-party PCIe and Thunderbolt I/O devices.1
  • 64-bit architecture to take advantage of more than 4GB of RAM.
  • Background rendering using GPU and CPU.
  • ColorSync-managed color pipeline.
  • High-precision floating-point render in linear-light color space.
  • Uses Grand Central Dispatch to tap into all available processors.
  • Full Unicode support.
  • GPU-accelerated exporting.

Jun 18, 2013 5:10 PM in response to sbell1

These are the tech spec minimum requirements


  • Mac computer with an Intel Core 2 Duo processor or better.
  • 2GB of RAM (4GB of RAM recommended).
  • OpenCL-capable graphics card or
    Intel HD Graphics 3000 or later.
  • 256MB of VRAM (512MB of VRAM recommended).
  • Display with 1280-by-768 resolution or higher.
  • OS X v10.6.8 or OS X v10.7.5 or OS X v10.8.3 or later.
  • 2.4GB of disk space.



Really 8G should be recommended.

Jun 19, 2013 12:01 AM in response to Karsten Schlüter

!. Can you answer Karsten's questions as they are very high contenders for being the cause of your problems.


Around 8 years ago on the old FCE forum we spent ages trying to sort out a problem only to discover eventually that the person involved was trying to import and edit a format totally unsuitable for editing.


If they had mentioned it initially, we could have saved a week or so of headbanging.


2. Have you trashed the preferences?


If not, do it immediately.

Jun 19, 2013 12:30 AM in response to sbell1

sbell1 wrote:

If you look above you will see that I have answered his question. …

you have written 'h.264' - this could be AVCHD, could be .ts, could be 120fps, could be .r3d, could be anything!


I am unsure if my project is set to this

you're using a highly professional software - you should know at last, what you have choosen on 'New Project'.


-------------


not using 'optimised' plus using non-standard 'video' (=I assume) could be the cause for your problems. FCPX is meant for camcorders as source. It allows. although, to use it for 'any' sort of video/files. but, on final export, that stuff has to undergo heavy processing = time.


being myself no good psychic (my crystal ball's broken lately), hard to tell from remote WHAT are you trying to acccomplish … if you don't know.


'pimping' the hardware will not solve this riddle. if you would tell us, what exactly is your source (format, codec, res, fps, audio, 'source' like camera, sat-recorder, 'internet', converter/which one) , plus your settings in FCPX (project, export) we probably can improve performance.


.....

How to get FCPX to use all my RAM?

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple ID.