What the Ultra actually is
The Ultra is a refresh of the DXP6800 Pro. It follows 2024's DXP6800 Pro. The layout is unchanged: six SATA bays, two NVMe slots, two 10GbE ports, two Thunderbolt 4 ports and 8GB of expandable DDR5.
The main change is the processor. The Ultra uses an Intel Core 5 120U in place of the Pro's Core i5-1235U. The newer chip has a slightly higher base clock (1.4 GHz versus 1.3) and turbos to 5GHz instead of 4.4GHz. Both are 10-core, 12-thread mobile-class parts. In other words, this is a laptop-class processor in a storage box. That suits a NAS that also runs Docker, virtual machines and media transcoding.
Headline specs, as listed by UGREEN and repeated in the review:
- CPU: Core 5 120U, 10 cores and 12 threads (2 performance, 8 efficiency), up to 5.0 GHz.
- Memory: 8GB DDR5 installed, two SO-DIMM slots.
- Storage: six SATA bays and two M.2 2280 NVMe slots, with a 208TB maximum (6×32TB plus 2×8TB).
- RAID: JBOD, Basic, 0, 1, 5, 6 and 10.
- Networking: two 10GbE ports.
- Ports: two Thunderbolt 4 and one USB 3.2 Gen 2 on the front, one USB 3.2 Gen 2 and two USB 2.0 on the back.
- Expansion: one PCIe 4.0 x4 slot.
- Price: $1,499.99 MSRP in the review.
Spec discrepancies to check before you buy
Several published figures conflict. If you plan to buy RAM, check these first.
Maximum memory. The Neowin review says the maximum is 64GB. UGREEN's own spec page lists 96GB. Other coverage agrees with UGREEN. How-To Geek says the Pro tops out at 64GB while the Ultra goes to 96GB. Cloudzat says UGREEN lists 96GB for the Ultra and 64GB for the Pro. The review appears to have carried over the Pro's figure. UGREEN's UK storefront adds to the confusion by also mentioning 64GB expandable memory in its marketing copy. Treat 96GB as the manufacturer's current claim, and confirm kit compatibility before you spend money on it.
Memory speed. The review says the installed module is DDR5-5200 Samsung memory. UGREEN's Chinese spec page lists a 5200 MHz maximum supported frequency. UGREEN's English storefront describes the included memory as DDR5 4800MHz. Its own pages disagree, so don't assume a particular speed out of the box.
HDMI. The review lists HDMI 2.1 with a 4K/60 maximum. UGREEN's pages advertise 8K output, up to 8K at 60Hz on the Chinese spec page. Whether you get 8K in practice may depend on the software. UGOS's HDMI desktop mode is still in beta, according to the review.
What the review found
Setup. The reviewer used the UGREEN NAS app on Windows to find and initialise the unit. UGOS does not automatically build a storage pool during setup, so you choose which drives go into which pool afterwards. The reviewer made two pools: one from six WD Red Plus 2TB hard drives, and one from two 4TB TEAMGROUP MP44Q NVMe SSDs for apps.
Network performance. On 10GbE, HDD RAID 5 reads nearly saturated the link, and writes were somewhat slower. The SSD pool was faster still. The review gives no precise throughput figures or client details, so these results are directional rather than reproducible. The reviewer also says the HDD pool performed better than on the Pro "for some reason" and offers no explanation.
Mixed workload. The reviewer ran Jellyfin with Intel Quick Sync to transcode a remote 4K HEVC HDR stream to 1080p at 10Mbps. At the same time, a Windows 11 26H2 virtual machine ran on two performance cores. The reviewer reports:
- Total host CPU use of 18.8%.
- Jellyfin using 0.3% of the CPU, thanks to hardware offload.
- About 6% utilisation inside the VM, with no visible lag.
Everything ran from the NVMe pool. That is a single configuration, not a guarantee for other codecs, stream counts or storage layouts.
The review also argues that HDD arrays stall under many small random requests. That is plausible, and it matches general industry understanding of mechanical disks, but the review doesn't measure it.
Power. UGREEN rates consumption at 43.07W during drive access and 24.91W with drives hibernating. AppleInsider cites the same 43W rating and says it saw about 60W under load while the unit was also handling heavy I/O requests. That is useful, because it is independent and less flattering than the rated figure.
Hardware design and servicing
The review praises the numbered bays, the front-panel connectivity, a Kensington slot and a magnetic dust filter. The HDD trays are tool-less. For all-SSD builds, 24 screws are included for 2.5-inch drives. The two 120mm fans pull air in over the drives.
Servicing is less convenient. The memory and M.2 slots sit behind a bottom panel and are easy to reach. Adding a PCIe NIC or GPU takes a partial teardown, which in the reviewer's description involves these steps:
- Remove the bottom panel and the screws in the rubber feet.
- Remove the rear panel's six rubber covers and screws.
- Take out four internal fixing screws.
- Slide the unit out of its casing.
- Remove the PCIe slot cover.
Reaching the 128GB internal flash drive that holds UGOS takes extra disassembly. The review calls that "not an incredibly helpful design". This is the reviewer's own account of the process, not a manufacturer service guide.
The software caveats
No hybrid RAID. UGOS has nothing like Synology's SHR or TerraMaster's TRAID. The reviewer says UGREEN engineers couldn't share plans for one. To grow a RAID 1 or RAID 5 pool, you replace all the smallest disks with larger ones. If you buy drives in mixed sizes, plan your usable capacity before you create the pool. Also, no SSD-specific protection scheme comparable to Synology's RAID-F1 exists, according to the review.
Surveillance Center is immature. The reviewer couldn't find desktop or mobile apps for it. They also couldn't pause a camera without removing it, and couldn't get person, pet or vehicle detection working with a Reolink PoE doorbell. Those are one tester's results on one setup.
What UGOS does offer. The review lists Docker, a virtual machine manager, cloud backup and Nvidia driver support in the App Center. Recent additions include folder encryption, OneDrive mounting, Amazon S3 and Backblaze backup, and GPU passthrough for Docker and VMs. UGREENlink provides remote access that works like Synology QuickConnect.
Roadmap. Planned items are not shipped features: mandatory OTP at sign-in, Google Drive mounting, rsync sync, and HDMI Theater and Surveillance modes. The review also lists a paid cloud AI subscription as planned.
Firmware version. The review tested UGOS Pro 1.20.0.0142. Neowin's date aside, Japanese outlet Mac Otakara reported on 21 September 2026 that this build was being rolled out. Its notes cover 123pan cloud mounting, a fix for batch archive extraction stalling, and safer "empty all" and "restore all" trash actions. They also cover a mobile Contacts app, automatic cleanup of old Docker images during app updates, and selectable system-log ranges. SMB handling of hidden files now follows the PC's display setting.
Price and the competition
The review lists $1,499.99. AppleInsider's review lists $1,449.99, and a TrueNAS and Unraid buyer's guide also cites $1,449.99 on Amazon. That guide puts the Ultra $350 above the Pro, with the main gains being a newer CPU and a 96GB memory ceiling. UGREEN's UK store showed £1,269.99 in the supplied evidence. Prices vary by region and retailer and change often, so check the current listing.
The review's price comparisons:
- It puts the cheaper DXP6800 Plus at just over $500 less. That model has a Core i3-1215U, one 10GbE and one 2.5GbE port, and USB-C instead of Thunderbolt 4.
- It puts the Ultra about $400 above the TerraMaster F6-424 Max, which has older hardware, no Thunderbolt 4, no front connectivity and no PCIe slot.
Who should buy it
It suits:
- Users who want a Plex, Emby or Jellyfin server with Quick Sync transcoding.
- Users running several VMs or containers, who would want to upgrade the RAM.
- Anyone who wants Thunderbolt 4 direct attach, dual 10GbE and a PCIe slot in one chassis.
Think twice if:
- You will mix drive sizes and want flexible expansion.
- You need a mature surveillance platform.
- You plan to run TrueNAS or Unraid. One guide says both boot through the same BIOS path as older DXP units, but community fan and LED drivers don't yet list the Ultra as tested. The Neowin review notes UGREEN doesn't block alternative bootloaders, so you can still try.
On conflicts of interest. UGREEN supplied the review sample and the six test hard drives, and the review carries Amazon affiliate links. The review says UGREEN had no editorial input or pre-approval. Even so, the 9/10 rating is one reviewer's view. Read it alongside independent coverage such as AppleInsider's "halfway between AI powerhouse and basic NAS" framing.
Bottom line
The hardware is strong. It has a modern CPU, dual 10GbE, Thunderbolt 4 and a PCIe slot, and the memory ceiling is higher than the Pro's. The review's own conclusion is that UGOS, rather than the hardware, is what holds it back. Hardware like this makes the missing hybrid RAID and the half-finished Surveillance Center more noticeable.