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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

ModelTypeProcessor socketsProcessor (as tested)Idle power (typical config)
Fujitsu PRIMERGY TX1310 M5 E-Star Fam1Tower/Pedestal1Xeon E-2378G30.2 W
Hewlett Packard Enterprise HPE ProLiant ML30 Gen10 PlusTower/Pedestal1Xeon (R) E-233631.3 W
Ace Computers PR-GDGFS1Rack-mount2EPYC 911534.9 W
Fujitsu PRIMERGY TX1320 M6 E-Star Fam 1Tower/Pedestal1Xeon(R) E-243635.9 W
Hewlett Packard Enterprise HPE ProLiant DL20 Gen10 PlusRack-mount1Xeon (R) E-233636.8 W
Hewlett Packard Enterprise HPE ProLiant DL20 Gen11Rack-mount1Xeon(R) E-241437 W
Hewlett Packard Enterprise HPE ProLiant ML30 Gen11Tower/Pedestal1Xeon(R) E-241440 W
Lenovo ThinkSystem ST50 V3Tower/Pedestal1Intel Xeon E-245640.2 W
Fujitsu PRIMERGY TX1320 M5 E-Star Fam1Tower/Pedestal1Xeon E-2378G40.9 W
DELL E104SRack-mount1Xeon Gold E 243644.4 W
Fujitsu PRIMERGY RX1330 M6 E-Star Fam 1Rack-mount1Xeon(R) E-243645.2 W
Fujitsu PRIMERGY RX1330 M5 E-Star Fam1Rack-mount1Xeon E-2388G46.8 W
Lenovo ThinkSystem ST250 V3Tower/Pedestal1Intel Xeon E-245651.9 W
Lenovo ThinkSystem ST45 V3Tower/Pedestal1AMD EPYC 4244P52 W
Lenovo ThinkSystem SR250 V3Rack-mount1Intel Xeon E-245652.4 W

New

Most recently certified

ModelTypeProcessor socketsProcessor (as tested)Idle power (typical config)
DELL E103SMulti-node1Xeon(R) 6766P-B206 W
ALTOS BrainSphere T110 F7Tower/Pedestal1Intel(R) Xeon(R) 6315P55 W
XFUSION G8550 V8**********Rack-mount2AMD EPYC 9455 48-Core Processor672 W
Supermicro AS -1116CS-TN, MD101-R10H14Rack-mount1EPYC 9655 96-Core Processor147 W
Hewlett Packard Enterprise HPE ProLiant Compute DL360 Gen12 1PRack-mount1Xeon(R) 6530P115 W
Hewlett Packard Enterprise HPE ProLiant Compute DL380 Gen12 2PRack-mount2Xeon(R) 6527P211 W
Hewlett Packard Enterprise HPE ProLiant Compute DL360 Gen12 2PRack-mount2Xeon(R) 6530P218 W
Hewlett Packard Enterprise HPE ProLiant Compute DL380 Gen12 1PRack-mount2Xeon(R) 6527P119 W
Hewlett Packard Enterprise HPE ProLiant Compute ML350 Gen12 1PTower/Pedestal2Xeon(R) 6505P93.8 W
Hewlett Packard Enterprise HPE ProLiant Compute ML350 Gen12 2PTower/Pedestal2Xeon(R) 6505P172 W
XFUSION G6550 V8**********Rack-mount2AMD EPYC 9455 48-Core Processor433 W
Hitachi HA810 G6 1PRack-mount1Xeon(R) 6530P115 W
Hitachi HA820 G6 2PRack-mount2Xeon(R) 6527P211 W
ZTE R5300 G5Rack-mount2Intel(R)Xeon(R) Platinum 8468539 W
KAYTUS KR4266-X3-A0-R0-00Rack-mount2Xeon(R) 6766E482 W

Source: ENERGY STAR certified servers data, US EPA, models listed for the US market. Data build 2026-09-29. Methodology.