4 hours ago
Your old system is actually a very capable TrueNAS platform, but you are right that it is overkill and quite power hungry for a basic home NAS. The Ryzen 9 3900X is far more CPU than TrueNAS needs for simple file serving, backups or even Plex if you mainly direct play. The X570 board and 850W PSU push the idle power higher than ideal for a box that will run 24 hours a day. That said, the hardware itself is fully compatible with TrueNAS and gives you ECC optional support depending on RAM choice and 10GbE upgrade potential through PCIe.
The GT710 will not give you the same behaviour as an Intel iGPU because it cannot be used for transcoding in Plex or Jellyfin under TrueNAS. If you plan on doing hardware transcoding then this build will always rely on raw CPU power. For two or three 1080p encodes the 3900X can brute force it, but it is not efficient. If your media use is local direct play via an Nvidia Shield then transcoding becomes irrelevant anyway.
The real limitation you are running into is the case. The DS380B has been discontinued for a while and prices are inflated. The Fractal Define R5 is still excellent but much larger. For an 8 bay compact chassis that supports TrueNAS cleanly you can look for the Fractal Node 804 or the SilverStone CS380 if you can find one. Both are still available at retail. The Node 804 especially remains a favourite TrueNAS enclosure with eight drive trays and good airflow.
If you keep the system you would only need a new case and possibly swap the PSU for something around 400 to 550 watts to improve idle efficiency. If you would rather move to something smaller and lower wattage you can sell the 3900X board bundle and build around an Intel platform with integrated graphics such as a 12th or 13th gen Core i3 or i5. These give you Quick Sync for Plex and much lower idle power, and you can still pair them with an 8 bay case.
Either path will fit your 500 to 1000 budget once drives are accounted for, and TrueNAS will run well on both. Keeping the old system saves money and gives you more performance than you will ever need for home use, but a new platform will be quieter, smaller and cheaper to run long term.
Here are a few hardware links that match what you are considering.
Fractal Node 804
https://www.amazon.com/s?k=Fractal+Node+...=ncmail-20
SilverStone CS380 if in stock
https://www.amazon.com/s?k=SilverStone+C...=ncmail-20
The GT710 will not give you the same behaviour as an Intel iGPU because it cannot be used for transcoding in Plex or Jellyfin under TrueNAS. If you plan on doing hardware transcoding then this build will always rely on raw CPU power. For two or three 1080p encodes the 3900X can brute force it, but it is not efficient. If your media use is local direct play via an Nvidia Shield then transcoding becomes irrelevant anyway.
The real limitation you are running into is the case. The DS380B has been discontinued for a while and prices are inflated. The Fractal Define R5 is still excellent but much larger. For an 8 bay compact chassis that supports TrueNAS cleanly you can look for the Fractal Node 804 or the SilverStone CS380 if you can find one. Both are still available at retail. The Node 804 especially remains a favourite TrueNAS enclosure with eight drive trays and good airflow.
If you keep the system you would only need a new case and possibly swap the PSU for something around 400 to 550 watts to improve idle efficiency. If you would rather move to something smaller and lower wattage you can sell the 3900X board bundle and build around an Intel platform with integrated graphics such as a 12th or 13th gen Core i3 or i5. These give you Quick Sync for Plex and much lower idle power, and you can still pair them with an 8 bay case.
Either path will fit your 500 to 1000 budget once drives are accounted for, and TrueNAS will run well on both. Keeping the old system saves money and gives you more performance than you will ever need for home use, but a new platform will be quieter, smaller and cheaper to run long term.
Here are a few hardware links that match what you are considering.
Fractal Node 804
https://www.amazon.com/s?k=Fractal+Node+...=ncmail-20
SilverStone CS380 if in stock
https://www.amazon.com/s?k=SilverStone+C...=ncmail-20