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Lion graphics extremely slow with Radeon HD 2600 Pro 256MB

Made a clean install with Lion and it now turns out that the graphics (Radeon HD 2600 Pro 256MB) on my Core 2 Duo iMac are way to slow (or insufficient VRAM) for the Lion UI.

Especially fullscreen apps animations and opening Launchpad folders are extremely choppy. Not much fun the way it is.

I mean come on, a mac, which can play WoW pretty well should be able to push 2D Graphics around, right?

When booting up the UI is fast, but after letting the iMac on for a while or waking it from sleep the graphics are choppy again.

Anyone else having this problem?

Regards,

Kersten

iMac, Mac OS X (10.7)

Posted on Jul 21, 2011 10:23 PM

217 replies

d00dbro

Level 1

63 points

Jul 14, 2013 9:18 PM in response to joevt

As the thread title says, Lion. Also in Mountain Lion and Mavericks. All of the graphics are always slow. I haven't done any real tests, but it's obvious that the GPU works hard (noisy), and everything is slow and glitchy.

Actually, I just upgraded to a GTX 650 Ti Boost, which is perfectly smooth.

Sep 25, 2013 4:43 AM in response to Community User

Hello, I've read all posts but I now I don't know what to do anymore....

I've got a problem with my iMac being very slow. It takes at least 3 minutes to start up a webbrowser. Safari, Firefox, Chrome it doesn't matter which one. But also all my other programs it takes at least that much time to start up any of them. Could this be the same problem?

I've got an iMac 24,5 inch 2007, 2,8 Ghz intel core 2 Duo, 2 GB 667 MHz DDR3 sdram, ati radeon HD 2600 Pro 256MB. OS X 10.8.5 installed.

I regularly clean my mac with Mackeeper. and all software is uptodate.

Thanks