Slow HandBrake conversion on 2011 i7?

[88 King]

I'm currently converting some films to ipad format using HandBrake. The CPU is going full speed according to Active monitor at 720%, and istat menu is reporting 97% usage with all 8 threads.

However, I'm only getting average 60 fps in handBrake. With my old i7 960 (3.2GHz) Windows 7 PC, I'm used to getting 80 to 100 fps at only 30% CPU usage. In fact I use to open 3 separate HandBrake conversions at the same time with higher fps than I'm getting now on the imac. 😕

I don't have Bootcamp installed at the moment so can't test HandBrake in Windows. Does everybody else also getting the same fps or are your's is much higher?

Thanks

Edit: I'm mainly converting from 720p films around 8 to 10 Gb.

 

[gmanist1000]

I'm currently converting some films to ipad format using HandBrake. The CPU is going full speed according to Active monitor at 720%, and istat menu is reporting 97% usage with all 8 threads.

However, I'm only getting average 60 fps in handBrake. With my old i7 960 (3.2GHz) Windows 7 PC, I'm used to getting 80 to 100 fps at only 30% CPU usage. In fact I use to open 3 separate HandBrake conversions at the same time with higher fps than I'm getting now on the imac. 😕

I don't have Bootcamp installed at the moment so can't test HandBrake in Windows. Does everybody else also getting the same fps or are your's is much higher?

Thanks

I have the 3.4GHz i7 Model. Mine fluctuated between 80-150FPS, but occasionally it was below 80, and sometimes down to 60.

 

[Nanker/Phelge]

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5)

It will depend on what you're encoding and what preset you're using.

I can tell you that my 2.93 Nehalem i7 does 40 FPS from a Blu-ray MKV to an "Apple TV 2" preset...

 

[thebignewt]

What are you using for the copy protection?

 

[aliensporebomb]

Thinking...

-How much memory do you have installed?
-What does your machine geekbench? www.geekbench.ca and run the app.

Curious.

 

[88 King]

The video files does not have copyright protection, they all are ripped from DVDs.

This imac with i7 @ 3.4 GHz and 8Gb of RAM gives geekbench score of 11300.

My old Windows 7 PC with i7 960 @ 3.2 GHz and 6Gb of RAM @ 1600MHz gives geekbench score around 8500. With the CPU overclocked to 4.2 GHz and RAM @ 1400MHz, geekbench score was about same as my current imac.

I'm going to swap the stock HD with a SSD today and install Bootcamp, first thing I'll do is to test HandBrake under Windows 7.