Register FAQ / Rules Forum Spy Search Today's Posts Mark Forums Read
Go Back   MacRumors Forums > Apple Hardware > Apple TV and Home Theater

Reply
 
Thread Tools Search this Thread Display Modes
Old Oct 22, 2008, 11:07 AM   #1
Superman07
macrumors 6502a
 
Join Date: Aug 2007
Encoding: GPU v CPU

I'm not an expert in this area, so it's hard for me to tell between the GPU and CPU which plays the most important role. Perhaps it's dependent on the way the software is written, I'm not sure.

However, as I've read through the threads here I've noticed some discission of difference in times, but I can't tell why.

For example: Mac Pros are beating out the iMac, which in turn beat the Mac Books.

Now I know this may seem obvious and "duh", and more is better, but how much more and what is it worth - both in terms of dollars and time?

Let's assume the processor speed is the same, what benefit would one see from the 256mb iMac card v the 512mb card? What then if you bump the processor to the 3.06ghz option? Likewise for the new entry Mac Book with the 9400M to the dedicated 9600 unit.
Superman07 is offline   0 Reply With Quote
Old Oct 22, 2008, 11:09 AM   #2
Eidorian
macrumors Penryn
 
Eidorian's Avatar
 
Join Date: Mar 2005
Location: Cuidad de México
Send a message via AIM to Eidorian
I don't know of any software on OS X that uses GPU encoding, yet.
__________________
Core i5 750 / 16 GB RAM / 500 GB SSD / HD 7950 / Windows 8.1
13" Retina MacBook Pro
Eidorian is offline   0 Reply With Quote
Old Oct 22, 2008, 11:18 AM   #3
mrgreen4242
macrumors 601
 
mrgreen4242's Avatar
 
Join Date: Feb 2004
For video encoding in OSX, at the moment, it's all about CPU speed, including both raw CPU power and the front side bus speed. Harddrive and disc drive speed can play a roll in this if your CPU is fast enough as well, depending on the source and destination of your encode.

Memory has a limited effect on encode speed, and GPU, at this time, has none.
__________________
Mac Pro 4,1, 8x2.26ghz, 10gb, 128gb SSD, 2x750gb (RAID1), 2tb, ATI6750
iPad air 64gb wifi - 16gb iPhone 5s - AppleTV3
mrgreen4242 is offline   0 Reply With Quote
Old Oct 22, 2008, 02:39 PM   #4
dynaflash
macrumors 68020
 
Join Date: Mar 2003
Speaking for HB, its all about cpu, number of (including cores) and clock speed. HB uses little ram actually. a c2d is awesome, and a quad is better yet (due to multi-threading). there are diminishing returns above that though, like a quad vs. an octo. GPU will do nothing for encoding with HB.
dynaflash is offline   0 Reply With Quote
Old Oct 22, 2008, 02:42 PM   #5
Eidorian
macrumors Penryn
 
Eidorian's Avatar
 
Join Date: Mar 2005
Location: Cuidad de México
Send a message via AIM to Eidorian
Quote:
Originally Posted by dynaflash View Post
Speaking for HB, its all about cpu, number of (including cores) and clock speed. HB uses little ram actually. a c2d is awesome, and a quad is better yet (due to multi-threading). there are diminishing returns above that though, like a quad vs. an octo. GPU will do nothing for encoding with HB.
This is where I suggest running multiple instances of Handbrake.
__________________
Core i5 750 / 16 GB RAM / 500 GB SSD / HD 7950 / Windows 8.1
13" Retina MacBook Pro
Eidorian is offline   0 Reply With Quote
Old Oct 22, 2008, 04:19 PM   #6
dynaflash
macrumors 68020
 
Join Date: Mar 2003
Quote:
Originally Posted by Eidorian View Post
This is where I suggest running multiple instances of Handbrake.
Do *not* try this with HB Snapshot 3 (macgui version) or above. Each instance would try to use the same queue plist and disaster would ensue. You have been warned
dynaflash is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Hardware > Apple TV and Home Theater

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
GPU choice - handbrake encoding using hardware GPU 775M vs GTX 780M musio iMac 13 Oct 5, 2013 06:24 AM
iPhone 5s CPU/GPU ? borgqueenx iPhone 1 Sep 10, 2013 09:19 AM
MBA '13 - iMovie Encoding and SSD CPU Usage Desmo2wheels MacBook Air 5 Jul 26, 2013 07:07 PM
Can intensive video encoding exhausts mac cpu? augustou MacBook Pro 2 Jul 8, 2013 04:57 PM
GPU usage & Encoding khakilad Apple TV and Home Theater 0 Jul 10, 2012 04:31 PM

Forum Jump

All times are GMT -5. The time now is 07:42 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC