Originally Posted by Tony Cariddi ➡️

And the performance of Pro Tools|HD Native is undeniable. To try to paint a clearer picture, I took some measurements and pushed the system to it's limits and wanted to share them with you.

Below are two images showing latency measurements using a variety of hardware at 48k and 96k, both at 64 sample buffers. Also below are some max plug-in counts I was able to get at these two sample rates with my Mac Pro 2.8 GHz Intel Xeon (Harpertown).

* One note: the HD measurement was done using an HD I/O, which is about 20% faster than the 192 I/O. Also, mix systems had about a 4 ms throughput latency at 48k—I need to double check that but pretty sure. As you can see, HD Native is capable of the same or better latency than a Mix rig and delivers way more plug-ins than an HD 2, or more.

48k, 64 sample buffer
Dverb: 180
Renaissance Comp: 500+ (60% CPU)
Eleven: 31

96k, 64 sample buffer
Dverb: 48
Renaissance Comp: 240
Eleven: 11

Originally Posted by PT_King ➡️

HD Native core card for $2800 on eBay - see item number 120693420062:

Avid Digidesign HD NATIVE core card PCIe Pro Tools 9 - eBay (item 120693420062 end time Mar-11-11 12:42:15 PST)

Originally Posted by Tony Cariddi ➡️

Hi Ray,

The HD Native card plays two important roles: (1.) delivers ultra low throughput latency, (2.) offers a large number of I/O paths. With Pro Tools|HD Native, all the mixing is done by the host processor, unlike with TDM systems where the mixing is done by the DSPs. The HD Native card also handles any direct LLM mixes you create—but as displayed in my post above, you are rarely going to need that with the processing power of a current multi-core plus the low latency performance of HD Native.
Tony

Originally Posted by J.P. ➡️

Hi Tony,
I think you fail to take into account the user who relies heavily on Virtual instruments. The demand they place on the computers cpu in conjunction with UAD cards and plug ins that are cpu hungry will make latency a moving target for a user who wants to do overdubs after a large session with Virtual instruments and plugins are already in use.

I am running a twelve core mac and it's possible for me in such a situation to push the limits of my cpu. If I had to also create super low latency monitor mixes on top of everything else my machine would give up the ghost.

What are your thoughts on this?