A reference session using 21 instances of OP-X PRO-II for everything including drums, bass, synth and effects. Here's a video demo performed in 4 sequencers and 2 systems:

http://www.youtube.com/watch?v=-sHhcAe5MaA
The session can be downloaded here:
http://www.sonicprojects.ch/opxpro2/description.html#perform ance

Available formats:
- Ableton Live 8
- Steinberg Cubase 5
- Avid Protools 8
- Cockos Reaper 3
- Multitrack MIDI & soundbank (for manual setup in other sequencers)

Since no other plugins or any other processing is involved you just need to have installed OP-X PRO-II, full or demo. Demo version available here:
http://www.sonicprojects.ch/opxpro2/freedemo.html

Measured total load:

Core 2 Duo E2700 2,53 GHz, onboard sound with asio4all @ 512 samples:

Cockos Reaper 3.7.2: about 50%
Ableton Live 8.2.2: about 50%

Core i7 920 2,66 gHz, RME HDSP 9632 @ 256 samples:

Ableton Live 8.2.2: about 10%
Steinberg Cubase 5.0.1: about 12%

Core i7 920 2,66 GHz, M-Audio Delta 2496 @ 256 samples

Avid Protools 8.0.1 M-Powered, using Fxpansion adapter for wrapping: about 25%

Would be interesting to know what's the load in your system.
Have much fun testing!


EDIT:

Reaper 4.22 x64 64 bit performance test:

http://www.youtube.com/watch?v=T2RoFBvPisc
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Last edited by Peter999 on Sat Jun 09, 2012 7:10 am; edited 1 time in total

Thanks, must check it. Also have a C2D cpu, but a faster one.

64-bit coming soon? I really want to buy this, but no 32-bit ever again for me.

Whenever Synthedit goes 64-bit, I suppose OPX will, as well.

It's a little hard to get an average CPU consumption number since it fluctuates quite a bit. For instance @ 256 samples, it starts at about 7% and peaks around 13% in the second half of the song.

The numbers on my DAW:

Core i7 2600K @ 3.4 GHz, RME HDSP 9632, Cubase 5.5.3

@ 32 samples: 17-35 %
@ 64 samples: 12-25 %
@ 128 samples: 10-18 %
@ 256 samples: 7-13 %

(Edit: percentages above as seen in Task Manager)

Not bad for a complete song by only OP-X PRO-II's. Thanks to a fast machine and low CPU consumption for a quality vsti as OP-X PRO-II is.
Last edited by Timfonie on Mon Jun 04, 2012 4:59 am; edited 1 time in total

Yes, of course it varies since OP-X PRO-II only produces load when it's actually playing (the idle load is very low).

So I'd say the maximum will be around 1:10 since here the most instances are fed by MIDI at the same time.

I have about 25 - 53% on a core2duo 2,9 gHz, 256 samples, cubase

Just bought it the other day, an hour before the sale ended.
The platinum bank broke my resistance.
quantum7, don't wait for X64. opx pro II runs good,in cubase X64 5.5.3 pc.
Can't wait to download and test this session!
Thanks Peter!

You're welcome If you have any results then be free to post them

On the cubase performance meter 25-40%.
In task manager 12-20%
cubase 5.5.3 x64 PC
i7920
Focusrite scarlet 8i6 usb interface; output latency 28.223ms.
the cubase level meter peaked at +10.7

Thanks for posting
Seems the RME still is the performance winner amongst the soundcards

I almost got a rme 9632.But, how long will the pci slots be around?
Will it work with my Motherboard? Will I have IRQ issues?I'm gonna test with my delta 1010.
Peter, Did you do any limiting, when you rendered the session?
I'm getting +10dbfs on the master.

Just tested with delta 1010, 23ms output latency,
25-35%, cubase performance meter,7-12% in task manager.
Also, cubase master fader -8.26, peak at +10dbfs.

interesting - maybe I should test the delta against the rme; only have used the delta for protools mp so far

This can't be right. It's taking 5 minutes to load this project in Reaper 4 with 50 megabytes per OPX instance (1 gig of memory hit). I am also seeing up to 80% cpu on a dual core AMD athlon 64 x2 3 ghz.