Thinking about using Celeron G3930 to minimize power consumption. Will be using NVMe SSDs. Network shares will be to Windows & Mac.

Would G3930 be a enough for 10GBe or would it bottleneck?

G3930 should be fine, especially considering SMB is single threaded, but a Pentium 3.2/3.5Ghz would be best, especially if you really want 1GB/s+, I remember for example an older Ivy Bridge Celeron G1610 2.6Ghz would limit writes to that server to around 550MB/s, replacing it with a same gen 3.1Ghz Xeon brought them up to around 700MB/s, where the disks used were likely the limit now, though likely difficult to get much more than that unless using a more recent high clock CPU.

Thinking to go with Pentium G4560 or G4600 which performs about 35% better then the Celeron. These are kinda hard to find though at the moment.