View Full Version : 64-bit performance increase


Anmol Mishra
March 1st, 2009, 12:52 AM
Hi David. I am going to upgrade my current Intensity capture station. I can capture 1080/60i at High quality with a stripped version of 32-bit XP with no dropouts. Memory is 800 MT/s DDR2 and CPU is 2.2 GHz Core 2 Duo w/ 4MB cache (Core 2 Duo T7200 overclocked to 2.2 GHz).

I am considering the Core 2 Duo SL9400 SLB65 1866 MHz 6 MB 1066 MT/s for the upgrade. I will run XP 64-bit, this has SSE 4.1 and 1066 MT/s memory support.

With the memory there will be throughput increase of 25% (800 to 1066), not sure how much improvement SSE 4.1 gives. I have no idea how much of an improvement is given by 32-bit vs 64-bit in Cineform. Blackmagic does seem to have 64-bit XP drivers on its website so that should be fine..

Would appreciate your input, as this will improve my battery life by about 20%.(9W CPU improvement takes 50W to 41W as motherboard draw).

David Newman
March 1st, 2009, 10:41 AM
The memory speed is where you get for most performance gain for CineForm encoding. Very little difference using 64-bit.

Anmol Mishra
March 1st, 2009, 11:40 AM
OK so there will 10-20% improvement with the improved memory speed. I don't think the Socket M Core 2 Duos had SSE 4.1
What is the improvement between the newer Penryn and the older Merom CPUs ??

I have to buy these to test it - so I am just trying to avoid an unnecessary hassle by asking you these questions..

David Newman
March 1st, 2009, 11:49 AM
I don't know the individual CPU models that well, there are just too many, so you might have to try. We don't do any particular SSE4.1 optimizition.

Richard Leadbetter
March 3rd, 2009, 12:48 PM
I think you're going to have issues with realtime CineForm capture at 1.8GHz regardless of the bus speed and memory throughput.

Anmol Mishra
March 5th, 2009, 07:36 PM
Hi David. At this moment, can we use a 64-bit workflow with Vegas (any version ??) and Cineform 64-bit ?

Richard, I was able to capture with a 2 GHz CPU using Neo HD - I overclocked it to 2.2 GHz to be sure. This was about 800 MHz FSB and using Film Scan.

With 1033 MHz FSB, there will be a performance increase and if I use High Quality. If I use the 17W TDP CPUs and overclock them to 2GHz - I think even Film Scan may be fine.

64-bit will still give more performance increase - just not sure how much. I will test and let everyone know.

David Newman
March 5th, 2009, 09:04 PM
We have no 64-bit components yet.