The register · 392 models
Servers
Enterprise servers certified under ENERGY STAR, with the configuration they were tested in and the idle power measured under the SERT test. A server spends most of its life near idle, so idle power matters.
Certified models
392
Makers
19
Types
5
most are rack-mount
Latest certification
Aug 2026
By type
- Rack-mount 308
- Multi-node 28
- Blade - Half Chassis 26
- Tower/Pedestal 25
- Blade - Full Chassis 5
Lowest idle power
| Model | Type | Processor sockets | Processor (as tested) | Idle power (typical config) |
|---|---|---|---|---|
| Fujitsu PRIMERGY TX1310 M5 E-Star Fam1 | Tower/Pedestal | 1 | Xeon E-2378G | 30.2 W |
| Hewlett Packard Enterprise HPE ProLiant ML30 Gen10 Plus | Tower/Pedestal | 1 | Xeon (R) E-2336 | 31.3 W |
| Ace Computers PR-GDGFS1 | Rack-mount | 2 | EPYC 9115 | 34.9 W |
| Fujitsu PRIMERGY TX1320 M6 E-Star Fam 1 | Tower/Pedestal | 1 | Xeon(R) E-2436 | 35.9 W |
| Hewlett Packard Enterprise HPE ProLiant DL20 Gen10 Plus | Rack-mount | 1 | Xeon (R) E-2336 | 36.8 W |
| Hewlett Packard Enterprise HPE ProLiant DL20 Gen11 | Rack-mount | 1 | Xeon(R) E-2414 | 37 W |
| Hewlett Packard Enterprise HPE ProLiant ML30 Gen11 | Tower/Pedestal | 1 | Xeon(R) E-2414 | 40 W |
| Lenovo ThinkSystem ST50 V3 | Tower/Pedestal | 1 | Intel Xeon E-2456 | 40.2 W |
| Fujitsu PRIMERGY TX1320 M5 E-Star Fam1 | Tower/Pedestal | 1 | Xeon E-2378G | 40.9 W |
| DELL E104S | Rack-mount | 1 | Xeon Gold E 2436 | 44.4 W |
| Fujitsu PRIMERGY RX1330 M6 E-Star Fam 1 | Rack-mount | 1 | Xeon(R) E-2436 | 45.2 W |
| Fujitsu PRIMERGY RX1330 M5 E-Star Fam1 | Rack-mount | 1 | Xeon E-2388G | 46.8 W |
| Lenovo ThinkSystem ST250 V3 | Tower/Pedestal | 1 | Intel Xeon E-2456 | 51.9 W |
| Lenovo ThinkSystem ST45 V3 | Tower/Pedestal | 1 | AMD EPYC 4244P | 52 W |
| Lenovo ThinkSystem SR250 V3 | Rack-mount | 1 | Intel Xeon E-2456 | 52.4 W |
New
Most recently certified
| Model | Type | Processor sockets | Processor (as tested) | Idle power (typical config) |
|---|---|---|---|---|
| DELL E103S | Multi-node | 1 | Xeon(R) 6766P-B | 206 W |
| ALTOS BrainSphere T110 F7 | Tower/Pedestal | 1 | Intel(R) Xeon(R) 6315P | 55 W |
| XFUSION G8550 V8********** | Rack-mount | 2 | AMD EPYC 9455 48-Core Processor | 672 W |
| Supermicro AS -1116CS-TN, MD101-R10H14 | Rack-mount | 1 | EPYC 9655 96-Core Processor | 147 W |
| Hewlett Packard Enterprise HPE ProLiant Compute DL360 Gen12 1P | Rack-mount | 1 | Xeon(R) 6530P | 115 W |
| Hewlett Packard Enterprise HPE ProLiant Compute DL380 Gen12 2P | Rack-mount | 2 | Xeon(R) 6527P | 211 W |
| Hewlett Packard Enterprise HPE ProLiant Compute DL360 Gen12 2P | Rack-mount | 2 | Xeon(R) 6530P | 218 W |
| Hewlett Packard Enterprise HPE ProLiant Compute DL380 Gen12 1P | Rack-mount | 2 | Xeon(R) 6527P | 119 W |
| Hewlett Packard Enterprise HPE ProLiant Compute ML350 Gen12 1P | Tower/Pedestal | 2 | Xeon(R) 6505P | 93.8 W |
| Hewlett Packard Enterprise HPE ProLiant Compute ML350 Gen12 2P | Tower/Pedestal | 2 | Xeon(R) 6505P | 172 W |
| XFUSION G6550 V8********** | Rack-mount | 2 | AMD EPYC 9455 48-Core Processor | 433 W |
| Hitachi HA810 G6 1P | Rack-mount | 1 | Xeon(R) 6530P | 115 W |
| Hitachi HA820 G6 2P | Rack-mount | 2 | Xeon(R) 6527P | 211 W |
| ZTE R5300 G5 | Rack-mount | 2 | Intel(R)Xeon(R) Platinum 8468 | 539 W |
| KAYTUS KR4266-X3-A0-R0-00 | Rack-mount | 2 | Xeon(R) 6766E | 482 W |
Source: ENERGY STAR certified servers data, US EPA, models listed for the US market. Data build 2026-09-29. Methodology.