Hey @dan
We’ve updated our website to include the specs in question. You can find them here:
https://store.45homelab.com/configure/hl15
The CPU is an Intel Xeon Bronze 3204, 6 Core 1.9 (Base) / 1.9 (Turbo) GHz.
Depending on the option you choose, you may be prompted to select other items as part of your configuration. Our team is also working on an e-store, which will include the options to buy items such as hard drives, should you wish to purchase them from us. We will send an update to the forum once the e-store is live.
With regard to your other questions, our case study on Plex may be helpful. You can find it here:
You can absolutely run NextCloud too. At the end of the day, it really comes down to your preference as to what you want to install, use and play around with. The open source community, including the one we’re building here, is an excellent resource to discuss all things homelab; hardware and software.
And, the HL15 hardware will certainly be able to support this.