Mon Dec 03, 2018 11:40 pm
The best CPU is one that has a lot of memory channels and PCIe lanes (for NVMe). The memory lanes is most important, though.
Most 2D tools will benefit from multiple cores. Most 3D tools will benefit from high clock speeds.
But really, you have the ability to network render on tons of machines, so it's really interactive performance that matters, and for that you want RAM.
For instance, if you work in float16 with 4 channel images of UHD size at 60 fps and you want to merge BG over FG, that's 8 GB per second. To cache a CC after that, and maybe a blur, you'd need 16 GB per second. If your shot is 3 seconds long, that's 48 GB in addition to whatever other tools you have plus the overhead from Fusion, plus the overhead from the OS and drivers and such plus other programs. Basically you'd need 64 GB to do a 3 second shot interactively. That's just rule of thumb, I've had comps that needed way more and I've had comps that I aggressively managed proxy, resolution, ROIDS, bit depth, channel counts, etc...
Chad Capeland
Indicated, LLC
www.floweffects.com