I’ve spent a few weeks with a new system and have found some surprising performance changes just by combining settings.
For reference, my tests were using the DAWBENCH RXC-EXT test in Cubase 6 and then Cubase 8. The test runs highly multibanded processing on a free Reaper plugin, stacking up the plugs until the computer can’t stream in realtime anymore.
I’ve not found a significant performance difference between Cubase 6 and 8 on the same system.
At 512 buffer on my RME FF800:
(more Plugins are better)
130 Plugins - (single core Xeon 2620v3 - before upgrade)
230 Plugins - (Dual core Xeon 2630v3 - after upgrade)
SOFTWARE & BIOS TWEAKS
246 Plugins - (Hyperthreading off, bios tweaks (disable runtime power mgmt, pcie performance mode, no c-states, disable usb3, Win7 High Performance Power mode although this would be disabled by the bios)
SOFTWARE & BIOS TWEAKS 2
271 Plugins - (Hyperthreading off, runtime power management ON, no power saving in bios, disable pcie performance mode, runtime power management ON, Steinberg Power scheme ON, Xeon turbo mode enabled, disabled USB3)
Other bios tweaks:
Intel Management interface (AMT) disabled - this polls the system every 5 seconds and can create glitches on certain driver versions (19.3 and above).
So I obtained a 17% performance increase just by setting up the computer more effectively. Many of the power tweaks I was making in the OS were not fully realised as the runtime power management in the BIOS was disabled.
The Turbo mode for the xeons allows an 8% overclock - clock speed of 2.4 to 2.6ghz. With this, the cores are all around 85-99% utilised in the task manager, although Cubase doesn’t fully optimise the usage of the cores, as it seems one processor is always 5-10% under-used, even when audio dropouts are occurring. This means 8 cores on my system are still not being maxed out.
Interestingly, it was this last set of tweaks that got Cubase 64-bit to perform the same as Cubase 32-bit (usually it was 20-30% slower).
Hope this helps someone
Back to writing music now!