- Joined
- Jan 18, 2011
- Messages
- 155
- Motherboard
- Gigabyte Z170X-ULTRA GAMING
- CPU
- i7-7700K
- Graphics
- Vega 64
- Mac
- Mobile Phone
Hi,
I have recently built a Hackintosh after using 10 YRS regular Macs. At first thanks for this forum which helped me a lot.
I am using Final Cut Studio 2 and I am wondering why is the CPU running all the time at low rates when doing apparently hi-complexity tasks. I still don't have a clear answer but at first I tried to disable Hyper-Threading of my Core-i7 950. To my surprise it really makes a difference - here are some examples:
Exporting a 1080p source with superimposed graphics through Compressor to a QT H.264 file (2-pass encoding, better resize filter) - a 30s took 1min 57sec with Hyper-Threading on and the CPU was showing an usage of 38%. Than I disabled Hyper-Threading and the same task took 1min 43sec and CPU showing 68%. This means I saved 14sec. on a 30sec video segment. Not bad.
Than I tried to export some Motion project to QT ProRes - with HT it took 3'20'' and without 2'58'' (I don't know if these marks are international '-marks minutes and ''-seconds)
I also tried a task with DivX Converter - with HT it took 26''and without 21''.
So in every aspect of the video encoding I got better results with Hyper-Threading being Disabled.
I have seen here in some forums that someone was deciding which CPU is the best for video and many people advised that the Hyper-Threading of the Core-i7 is a good thing for this purpose - so here I give a practical example that it may not be true.
The only application where I have noticed worse results is Cinebench - with HT it gave 5.58 and without HT 4.22. But I mostly work in Final Cut Studio, so that is what matters to me more. Maybe for rendering some 3D objects HT might be better.
It seems that the Final Cut Studio 2 is not able to use the full power of this CPU's. I heard the same from my friend who has an original 8-core MacPro that the CPU ratio is always very low when even using Final Cut Studio 3.
Does anyone have an idea if there is a chance of making FCS using more of the CPU power?
Best!
Radim
I have recently built a Hackintosh after using 10 YRS regular Macs. At first thanks for this forum which helped me a lot.
I am using Final Cut Studio 2 and I am wondering why is the CPU running all the time at low rates when doing apparently hi-complexity tasks. I still don't have a clear answer but at first I tried to disable Hyper-Threading of my Core-i7 950. To my surprise it really makes a difference - here are some examples:
Exporting a 1080p source with superimposed graphics through Compressor to a QT H.264 file (2-pass encoding, better resize filter) - a 30s took 1min 57sec with Hyper-Threading on and the CPU was showing an usage of 38%. Than I disabled Hyper-Threading and the same task took 1min 43sec and CPU showing 68%. This means I saved 14sec. on a 30sec video segment. Not bad.
Than I tried to export some Motion project to QT ProRes - with HT it took 3'20'' and without 2'58'' (I don't know if these marks are international '-marks minutes and ''-seconds)
I also tried a task with DivX Converter - with HT it took 26''and without 21''.
So in every aspect of the video encoding I got better results with Hyper-Threading being Disabled.
I have seen here in some forums that someone was deciding which CPU is the best for video and many people advised that the Hyper-Threading of the Core-i7 is a good thing for this purpose - so here I give a practical example that it may not be true.
The only application where I have noticed worse results is Cinebench - with HT it gave 5.58 and without HT 4.22. But I mostly work in Final Cut Studio, so that is what matters to me more. Maybe for rendering some 3D objects HT might be better.
It seems that the Final Cut Studio 2 is not able to use the full power of this CPU's. I heard the same from my friend who has an original 8-core MacPro that the CPU ratio is always very low when even using Final Cut Studio 3.
Does anyone have an idea if there is a chance of making FCS using more of the CPU power?
Best!
Radim