# What are the home servers with the best energy efficiency ratings? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

What are the home servers with the best energy efficiency ratings?

## Products

### Hewlett Packard Enterprise HPE ProLiant DL20 Gen11 (Xeon E-2400)
```yaml
product: hewlett-packard-enterprise-hpe-proliant-dl20-gen11-xeon-e-2400
brand: Hewlett Packard Enterprise
price_gbp: 5551.45
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ram: Up to 128 GB DDR5 UDIMM (4 DIMM slots)
cpu_model: Intel Xeon E-2400 series (examples: E-2436, E-2434)
dimensions: 1.69 x 17.11 x 15.25 in
storage_size: Supports up to 92.16 TB (4+2 SFF configuration)
expandability: 1 x PCIe Gen5 x16 slot and 1 x OCP 3.0 slot; storage configurations: 2 LFF or 4+2 SFF; Intel VROC SATA RAID support
```

- **Price:** £5551.45 [^1]
- **Summary:** The HPE ProLiant DL20 Gen11 is a compact 1U, short-depth rack server using single-socket Intel Xeon E-2400 series processors, DDR5 memory up to 128 GB, flexible storage (2 LFF or 4+2 SFF) and expansion via a PCIe Gen5 slot and OCP 3.0. It targets space-constrained deployments and remote/branch offices that need enterprise management (iLO 6) and configurable power options.
- **Ideal For:** Ideal for energy-efficient home servers because it uses single-socket Intel Xeon E-2400 processors (up to 95W TDP) and supports right-sized power supplies (290W to 1000W flex slots) and low-power DDR5 memory, enabling lower idle and operational power when configured with lower-TDP CPUs and minimal drives.
- **Additional Sources:** [^2], [^3]

### TerraMaster F4-423
```yaml
product: terramaster-f4-423
brand: TerraMaster
price_gbp: 341.94
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ram: 4 GB DDR4 (expandable to 32 GB)
cpu_model: Intel Celeron N5095
dimensions: 227 x 225 x 136 mm
storage_size: Maximum internal raw capacity 80TB (20TB x4)
expandability: 2 x M.2 2280 NVMe slots; memory up to 32 GB; 4 drive bays (hot-swap)
number_of_usb_ports: 2
```

- **Price:** £341.94 [^4]
- **Summary:** The F4-423 is a 4-bay NAS powered by an Intel Celeron N5095 with hardware transcoding, dual 2.5GbE ports, dual M.2 NVMe slots, and 4 GB of DDR4 RAM (user-upgradeable). It supports up to 80TB internal raw capacity, multiple RAID levels, HDMI output, and is aimed at home media users and small offices that need efficient multi-Gigabit file serving and Plex-style transcoding.
- **Ideal For:** Suitable for energy-efficient home servers because it uses a low-power Intel Celeron N5095 and lists idle power as low as 13.9 W, plus efficient C-state support and compact dimensions.
- **Additional Sources:** [^5], [^6]

### Asustor AS5304T
```yaml
product: asustor-as5304t
brand: Asustor
price_gbp: 274.89
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ram: 4 GB
cpu_model: Intel Celeron J4105
dimensions: 6.7 in x 6.9 in x 9.1 in
storage_size: Diskless (supports up to 64 TB)
expandability: Supports up to three AS6004U expansion units (total up to 192 TB)
number_of_usb_ports: 3
```

- **Price:** £274.89 [^7]
- **Summary:** The AS5304T is a 4-bay desktop NAS with an Intel Celeron J4105 quad-core CPU, 4 GB DDR4 memory, dual 2.5 GbE ports, HDMI output, and support for up to 64 TB of internal storage. It targets home and small-office users who need 4K media capabilities, faster-than-gigabit networking, and expandable storage.
- **Ideal For:** Well suited for energy-efficient home servers because it uses a low-power Intel Celeron J4105 CPU, DDR4 memory, and has low operating power consumption (approx 27 W) with disk hibernation down to 12.6 W.
- **Additional Sources:** [^8], [^9]

### Dell Dell PowerEdge R250 (Intel Xeon E-2300)
```yaml
product: dell-dell-poweredge-r250-intel-xeon-e-2300
brand: Dell
price_gbp: 987.07
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ram: Up to 128 GB DDR4 UDIMM
cpu_model: Intel Xeon E-2300 series
dimensions: Height 42.8 mm; Width 482.6 mm; Depth 598.64 mm with bezel
storage_size: Up to 4 x 3.5-inch drives (max 30.72 TB)
expandability: 2 x PCIe Gen4 slots; up to 4 drive bays; 4 DIMM slots (128 GB max)
number_of_usb_ports: Front 1 x USB 2.0, Rear 1 x USB 2.0, 1 x USB 3.0, Internal 1 x USB 3.0 (optional)
```

- **Price:** £987.07 [^10]
- **Summary:** The Dell PowerEdge R250 is a compact 1U rack server with a single-socket Intel Xeon E-2300 series CPU, up to 128 GB DDR4 memory, PCIe Gen4 expansion and up to four 3.5-inch drive bays. It includes iDRAC9 management and multiple PSU options for small and medium business workloads and edge deployments.
- **Ideal For:** Ideal for energy-efficient home servers because its single-socket Xeon E-2300, modest PSU options (450W) and support for low core-count configurations reduce power draw while still offering up to 128 GB RAM and PCIe Gen4 expansion.
- **Additional Sources:** [^11], [^12]

### Dell Dell PowerEdge T150 (Xeon E-2300)
```yaml
product: dell-dell-poweredge-t150-xeon-e-2300
brand: Dell
price_gbp: 744.22
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ram: 4 DDR4 DIMM slots, UDIMM 128 GB max, up to 3200 MT/s
cpu_model: One Intel Xeon E-2300 series processor with up to 8 cores
dimensions: Height: 360 mm, Width: 175 mm, Depth: 453.75 mm
storage_size: Up to 4 x 3.5 in cabled SAS/SATA, max 30.72 TB
expandability: 2 PCIe 4.0 slots and 2 PCIe 3.0 slots; 4 PCIe slots total; supports PERC H345 H755 HBA355i; up to 4 LFF drives; optional BOSS (2 x M.2)
number_of_usb_ports: Front 1 USB 3.0; Rear 5 USB 2.0 and 1 USB 3.0; Internal 1 USB 3.0 (optional)
```

- **Price:** £744.22 [^13]
- **Summary:** Entry-level single-socket tower server powered by Intel Xeon E-2300 series (up to 8 cores). Supports up to 128 GB UDIMM RAM, four 3.5 in drive bays (up to 30.72 TB) and multiple PCIe Gen4/Gen3 expansion slots for storage and networking. Designed for small businesses and branch offices needing reliable local compute and storage.
- **Ideal For:** Suits energy-efficient home server use because it uses a single-socket Intel Xeon E-2300 platform with cabled 300W power supply options and support for low-power configurations (single CPU, UDIMM memory up to 128 GB, 4 LFF drives) which lower idle and peak power compared with multi-socket systems.
- **Additional Sources:** [^14], [^15]

### Hewlett Packard Enterprise HPE ProLiant MicroServer Gen10 Plus G5420
```yaml
product: hewlett-packard-enterprise-hpe-proliant-microserver-gen10-plus-g5420
brand: Hewlett Packard Enterprise
price_gbp: null
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ram: 8 GB (installed), supports up to 32 GB ECC UDIMM
cpu_model: Intel Pentium G5420
dimensions: 4.68 in x 9.65 in x 9.65 in (H x W x D)
storage_size: None installed; supports up to 16 TB (4 x 4 TB) 3.5in or 960 GB (4 x 240 GB) 2.5in
expandability: 1 PCIe 3.0 x16 low-profile slot; 4 non-hot-plug drive bays; optional Smart Array controllers and iLO enablement kit
number_of_usb_ports: 7 (2 front USB 3.2 Gen2, 4 rear USB 3.2 Gen1, 1 internal USB 2.0)
```

- **Price:** £None [^16]
- **Summary:** Compact entry-level tower server with an Intel Pentium G5420 CPU, dual DIMM ECC memory slots (up to 32 GB), four internal drive bays, quad 1GbE ports, and external 180W power adapter. Suited for small offices or home NAS/virtualization use where space efficiency and basic server features (iLO option, RAID controllers) are required.
- **Ideal For:** Energy-efficient home servers: low-TDP Pentium G5420 (54W), external 180W PSU, and support for up to 4 drives provide good power-to-storage efficiency for low-load home server workloads.
- **Additional Sources:** [^17]

### Hewlett Packard Enterprise HPE ProLiant ML30 Gen11 (Xeon E-2400)
```yaml
product: hewlett-packard-enterprise-hpe-proliant-ml30-gen11-xeon-e-2400
brand: Hewlett Packard Enterprise
price_gbp: 2330.24
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ram: 16 GB
cpu_model: Intel Xeon E-2414
dimensions: 36.83 cm H x 17.53 cm W x 47.5 cm D
storage_size: 1 TB
expandability: Supports up to 4 LFF or 8 SFF drives; 4 expansion slots including one PCIe Gen5 x16; onboard M.2 NVMe SSD; maximum 128 GB DDR5
number_of_usb_ports: 8
```

- **Price:** £2330.24 [^18]
- **Summary:** The HPE ProLiant ML30 Gen11 is an entry-to-mid level tower server offering single-socket Intel Xeon E-series CPUs, DDR5 memory up to 128 GB, multiple drive chassis options (4 LFF or 8 SFF) and PCIe Gen5 expansion. It includes HPE iLO 6 management and configurable redundant FlexSlot power supplies, making it suited for SMB and remote/branch office workloads requiring compact, enterprise-grade features.
- **Ideal For:** Suitable for energy-efficient home servers because it uses low-TDP Intel Xeon E-series CPUs (example E-2414 55W) and configurable 350W to 500W power supply options that allow lower power configurations.
- **Additional Sources:** [^19], [^20]

### Hewlett Packard Enterprise HPE ProLiant ML350 Gen11 (Tower)
```yaml
product: hewlett-packard-enterprise-hpe-proliant-ml350-gen11-tower
brand: Hewlett Packard Enterprise
price_gbp: 8044.84
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
ram: Up to 8 TB DDR5 (example configs ship with 64 GB)
cpu_model: Intel Xeon Scalable (4th and 5th Gen; example: Xeon Silver 4410Y)
dimensions: 4U tower (exact numeric dimensions not found)
storage_size: Configurable (example Smart Choice configs include 2 x 480 GB SSD)
expandability: Up to 10 PCIe Gen5 slots and 2 OCP 3.0 slots; support for 8 SFF or 4 LFF drive bays and EDSFF drives
number_of_usb_ports: USB 3.2 Gen1 ports x3 (front and rear combined)
```

- **Price:** £8044.84 [^21]
- **Summary:** The HPE ProLiant ML350 Gen11 is a 2-socket tower server supporting 4th and 5th Gen Intel Xeon Scalable processors, up to 8 TB DDR5 memory, PCIe Gen5 expansion and multiple storage form factors including EDSFF. It offers enterprise-class management (iLO 6), advanced security with silicon root of trust, and flexible power and GPU options, suited to SMBs and remote offices requiring scalable compute and storage.
- **Ideal For:** Ideal for energy-efficient home-server use because it supports modern Intel Xeon Scalable CPUs with up to 350W TDP and DDR5 memory (up to 8 TB) enabling consolidation and fewer machines for the same workload, plus configurable low-halogen flexible-slot power supplies.
- **Additional Sources:** [^22], [^23]

---
## References & Sources
[^1]: HPE Buy (resellers), accessed 2026-06-15. https://buy.hpe.com/us/en/compute/rack-servers/proliant-dl10-servers/hpe-proliant-dl20-gen11/p/1014788779
[^2]: CDW, accessed 2026-06-15. https://www.cdw.com/product/hpe-proliant-dl20-gen11-rack-mountable-xeon-e-2436-2.9-ghz-32-gb-ssd/8075463
[^3]: ServerComputeWorks, accessed 2026-06-15. https://www.servercomputeworks.com/DL20-Gen11.asp
[^4]: TerraMaster Official Store, accessed 2026-06-15. https://www.terra-master.com/pages/f4-423-specification
[^5]: TechRadar (retailer listing / review noted availability), accessed 2026-06-15. https://www.techradar.com/reviews/terramaster-f4-423-nas-review
[^6]: Android Central (deal listing referencing Amazon price), accessed 2026-06-15. https://www.androidcentral.com/accessories/smart-home/terramaster-f4-423-review
[^7]: Walmart, accessed 2026-06-15. https://www.walmart.com/ip/Asustor-AS5304T-4-Bay-Nimbustor-4-Desktop-NAS-Diskless/562118108
[^8]: Provantage, accessed 2026-06-15. https://www.provantage.com/asustor-as5304t~7ASUO033.htm
[^9]: SabrePC, accessed 2026-06-15. https://www.sabrepc.com/AS5304T-ASUSTOR-S5491358
[^10]: ServerMall, accessed 2026-06-15. https://servermall.com/catalog/servers/dell-poweredge-r250-4lff/
[^11]: ServerMonkey, accessed 2026-06-15. https://www.servermonkey.com/servers/refurbished-dell/dell-poweredge-15th-generation/rackmount-servers/dell-poweredge-r250.html
[^12]: IT Creations, accessed 2026-06-15. https://www.itcreations.com/dell/dell-emc-poweredge-r250-server
[^13]: Dell (Malaysia), accessed 2026-06-15. https://www.dell.com/en-my/shop/servers-storage-and-networking/poweredge-t150-tower-server/spd/poweredge-t150/pet15011a
[^14]: Dell (Canada), accessed 2026-06-15. https://www.dell.com/en-ca/shop/servers-storage-and-networking/poweredge-t150/spd/poweredge-t150/pe_t150_p1q_vi_vp
[^15]: The Server Store, accessed 2026-06-15. https://www.theserverstore.com/dell-dell-poweredge-t150-workstation-w-intel-pentium-gold-g6405t-350ghz-dual-core-8gb-.html
[^16]: HPE QuickSpecs, accessed 2026-06-15. https://www.hpe.com/us/en/collaterals/collateral.a00073554enw.html
[^17]: SHI, accessed 2026-06-15. https://www.shi.com/product/39606614/HPE-ProLiant-MicroServer-Gen10-Plus-Entry
[^18]: HPE Store, accessed 2026-06-15. https://buy.hpe.com/us/en/compute/tower-servers/proliant-ml10-servers/hpe-proliant-ml30-gen11/p/1014788890
[^19]: CDW, accessed 2026-06-15. https://www.cdw.com/product/hpe-proliant-ml30-gen11-tower-xeon-e-2434-3.4-ghz-32-gb-ssd-2-x-960-g/7931770
[^20]: Provantage, accessed 2026-06-15. https://www.provantage.com/hpe-p65094-001~7HPE9EH9.htm
[^21]: HPE Store (reseller listings), accessed 2026-06-15. https://buy.hpe.com/us/en/compute/tower-servers/proliant-ml300-servers/hpe-proliant-ml350-gen11/p/1014696172
[^22]: CDW, accessed 2026-06-15. https://www.cdw.com/product/hpe-proliant-ml350-gen11-base-tower-xeon-silver-4410y-2-ghz-64-gb-ssd/7760403
[^23]: CDW (alternate configuration), accessed 2026-06-15. https://www.cdw.com/product/hpe-proliant-ml350-gen11-performance-tower-xeon-gold-5416s-2-ghz-64-gb/7770052