DVDfab version: various over past year
CPU: i7 quad-core
GPU: GT 430
For re-encoding blu-ray, not all DVDfab versions have worked for my preferred settings (I simply keep older versions around until a newer one proves itself). The fastest throughput seems to be software decode (1 billion Sandy Bridge transistors) and software+CUDA encode (1/2 billion Fermi transistors). Setting is high quality (i.e. slowest).
Past DVDfab versions have worked at about real-time rates i.e. about 2 hours to re-encode a 2 hour movie. Observing CPU Meter and GPU Meter gadgets, the CPU is pegged near 100% (all 8 threads) and the GPU hovers between 80% and 100%.
For the lastest release(s), this has changed. It's now about half the former speed i.e. over 4 hours for a 2 hour movie. The CPU is still pegged near 100% but the GPU hovers between 35% and 50%, which makes me think the GPU is not being used as effectively as before.
Is this the correct explanation? Are improvements planned?
I liked the older rates.
- paul
CPU: i7 quad-core
GPU: GT 430
For re-encoding blu-ray, not all DVDfab versions have worked for my preferred settings (I simply keep older versions around until a newer one proves itself). The fastest throughput seems to be software decode (1 billion Sandy Bridge transistors) and software+CUDA encode (1/2 billion Fermi transistors). Setting is high quality (i.e. slowest).
Past DVDfab versions have worked at about real-time rates i.e. about 2 hours to re-encode a 2 hour movie. Observing CPU Meter and GPU Meter gadgets, the CPU is pegged near 100% (all 8 threads) and the GPU hovers between 80% and 100%.
For the lastest release(s), this has changed. It's now about half the former speed i.e. over 4 hours for a 2 hour movie. The CPU is still pegged near 100% but the GPU hovers between 35% and 50%, which makes me think the GPU is not being used as effectively as before.
Is this the correct explanation? Are improvements planned?
I liked the older rates.
- paul