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Mountain Lion 10.8.3 Update Graphics jittery

K

kevtucker

macrumors newbie
Original poster
Jun 3, 2011
10
0
Hi,

Just updated RAM in my 27" Late-2012 iMac 2.9Ghz Intel Core i5.

It had 8 Gb but I have added 2 x 8 Gb of Crucial 1033 DDR3 RAM which I pulled from my 21.5" iMac so now have a total of 24 Gb.

Now I recently upgraded to 10.8.3 and now i'm having Graphics issues where scrolling in Chrome or Safari is causing the window to Jitter, also happening when scrolling Applications folder or when i'm opening photos using QuickView.

Just wondering if anyone having same issue since updating to 10.8.3

I have tried resetting PRAM, also think I had an update for some Apple Intermedia Codecs today too for Motion 5.

Thanks

Kevin.
 
kevtucker said:
It had 8 Gb but I have added 2 x 8 Gb of Crucial 1033 DDR3 RAM which I pulled from my 21.5" iMac so now have a total of 24 Gb.
Click to expand...

Your 8GB of RAM was running at 1600Mhz. Since you've added in your old RAM, all your RAM speeds have stepped down to 1033Mhz so everything runs in a compatible mode.

It's not 10.8.3 that makes your graphics slow, it's the extra RAM you added.
 
Thanks for replying guys but having same problem after removing the extra 16 gb ram I put in.

Screen is just doing the same and have tried resetting PRAM too.

Cant remember it doing it before I got an update for the Motion 5 software it only seemed to start after that.

Kevin
 
Well. Done s restore back to Saturday but still the same issue. So going to fresh install 10.8.3 if still the same I'll contact Apple
 
I thought when you paired slower RAM in it didn't have that much of a drastic effect (unless you're performance mofo) :D but surprised it's having that much of an effect on the graphics!
 
I had this issue on my 21" imac.

Just started randomly. Tried a refresh of mountain Lion didn't work.

Did a full erase and reinstall last night and it fixed mine.
 
Thanks for reply.

Just on with a fresh install now. Did a restore but seemed worse than before. Hope this works.

Kevin
 
I am going to try putting the Memory back in and see if the issue arises again and then try this if it does.

Thanks

Kevin
 
Right i'm going to update the Codec that I think caused the problem before see what happens.

Keivn
 
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