Fri Jan 08, 2021 6:59 am
1) The selling point for AMD CPU's over Intel's for me right now is mostly that AMD's support PCIe Gen4, which opens you up to very, very fast SSD's - 7GB/s (double the speed of Gen3's, 10-20x SATA SSDs, and let's not even talk about spinning disks). The huge number of cores of AMD's offerings also makes light work of a lot of encoding/transcoding tasks that aren't handled by the GPU. Intel will be releasing their first Gen4 desktop CPU's in March, but then it'll be mid-year before you can buy them...
2) As mpetech mentioned, NVidia GPU users are currently plagued by out-of-memory errors, mostly around Fusion and such workloads. But I'd still find it hard to go with an AMD GPU because of how fast NVENC makes exports and transcoding. Even my generation-old mid-range 2070 will encode at >4x the speed of the CPU. Hopefully NVidia and Blackmagic get their driver/Cuda/memory issues sorted soon.
Whatever you choose, I expect buying something with as much memory as possible would be money well spent. I have to say, my 8gb card really isn't cutting it - but that might change as the v17 beta cycle continues and memory issues get fixed.
3) If you go with an AMD CPU, make sure you get a X570 motherboard not X470. Otherwise you won't get PCIE Gen4. Other things to look out for are USB 3.1 Gen 2 Type-C on both the back panel and headers for the front panel (and a case with a front Type-C port!), which will eliminate many motherboards and most cases. Fans headers. You can never have enough fans for a high-end machine; things will get HOT!
4) For SSDs, as I said under CPU's, Gen4 NVMe SSDs are just insane. I have a Gen4 for OS and databases, a Gen3 for Cache/Optimized Media/assorted media, another Gen3 for project footage (using an external enclosure so I can keep the original data, but the perf hit of external is OK here), then an ancient NAS for backups.
5) Like the video memory, it depends on what kind of projects you'll be working on. If you want to use Fusion at all, 64gb is quite necessary in my experience. Again, betas and all that...
HW: AMD Ryzen 9 3900X, 64GB DDR4 3600 CL16 RAM, 3x2TB NVMe SSDs (1xGen4, 2xGen3), 8GB Nvidia GeForce RTX 2070 Super, dual monitor (4k, 1080P)
SW: DaVinci Resolve Studio 17b7, Win10 Pro 20H2, Nvidia Studio Driver 460.89, latest BIOS/chipset/drivers/etc.