Dell Inc. PowerEdge R6725 (AMD EPYC 9845, 2.10 GHz) SPECpower_ssj2008 = 36,654 overall ssj_ops/watt
Test Sponsor: Dell Inc. SPEC License #: 6573 Test Method: Single Node
Tested By: Dell Inc. Test Location: Round Rock, TX, USA Test Date: Oct 16, 2025
Hardware Availability: Mar-2025 Software Availability: Sep-2025 Publication: Nov 4, 2025
System Source: Single Supplier System Designation: Server Power Provisioning: Line-powered
Benchmark Results Summary
Performance Power Performance to Power Ratio
Target Load Actual Load ssj_ops Average Active Power (W)
100% 99.3% 33,267,172 711 46,822
90% 89.8% 30,064,850 662 45,427
80% 79.7% 26,689,373 611 43,665
70% 68.5% 22,947,456 562 40,817
60% 60.0% 20,096,512 524 38,365
50% 50.0% 16,751,863 466 35,950
40% 40.0% 13,396,888 411 32,633
30% 30.0% 10,060,939 357 28,172
20% 20.0% 6,703,915 307 21,805
10% 10.0% 3,345,243 256 13,073
Active Idle 0 135 0
∑ssj_ops / ∑power = 36,654
Graph of results
System Under Test
Set: 'sut'
Set Identifier: sut
Set Description: System Under Test
# of Identical Nodes: 1
Comment: PowerEdge R6725
Hardware
Hardware Vendor: Dell Inc.
Model: PowerEdge R6725 (AMD EPYC 9845, 2.10 GHz)
Form Factor: 1U
CPU Name: AMD EPYC 9845, 2.10 GHz
CPU Characteristics: 160 core, 2.10 GHz, 320 MB L3 Cache, Max Boost Clock up to 3.70 GHz
CPU Frequency (MHz): 2100
CPU(s) Enabled: 320 cores, 2 chips, 160 cores/chip
Hardware Threads: 640 (2 / core)
CPU(s) Orderable: 1,2 chip
Primary Cache: 32 KB I + 48 KB D on chip per core
Secondary Cache: 1 MB I+D on chip per core
Tertiary Cache: 320 MB I+D on chip per chip
Other Cache: None
Memory Amount (GB): 384
# and size of DIMM: 24 x 16 GB
Memory Details: 16 GB 1Rx8 PC5-6400-R running at 4800MT/s Slots A1-12, B1-12 populated
Power Supply Quantity and Rating (W): 1 x 1100
Power Supply Details: 1100W Titanium Efficiency, Dell P/N: D5NDX
Disk Drive: 1 x 480 GB M.2 NVMe, Dell P/N: VR66V
Disk Controller: PCIe attached Boot Optimized Storage (BOSS) card, Dell P/N: CMFVP
# and type of Network Interface Cards (NICs) Installed: 1 x Dual-port Intel E610-XT2, Dell P/N: FC0HK
NICs Enabled in Firmware / OS / Connected: 2/2/1
Network Speed (Mbit): 1000
Keyboard: None
Mouse: None
Monitor: None
Optical Drives: No
Other Hardware: None
Software
Power Management: Balanced power plan in OS (see SUT notes)
Operating System (OS): Microsoft Windows Server 2025 Datacenter
OS Version: Version 24H2 (OS Build 26100.1)
Filesystem: NTFS
JVM Vendor: Oracle Corporation
JVM Version: Java Hotspot(TM) 64-Bit Server VM (build 15.0.2+7-27, mixed mode,sharing)
JVM Command-line Options: -server -Xms1500m -Xmx1500m -Xmn1300m -XX:+UseParallelGC -XX:SurvivorRatio=1 -XX:TargetSurvivorRatio=99 -XX:ParallelGCThreads=2 -XX:+UseLargePages -XX:UseLargePageSizeInBytes=2m -XX:+UseBiasedLocking -XX:UseAVX=1 -XX:AutoBoxCacheMax=20000 -XX:+OptimizeFill -XX:FreqInlineSize=2500
JVM Affinity: start /NODE [0-19] /AFFINITY [0xF,0XF0,0XF00,0XF000,0XF0000,0XF00000,0XF000000,0XF0000000]
JVM Instances: 160
JVM Initial Heap (MB): 1500
JVM Maximum Heap (MB): 1500
JVM Address Bits: 64
Boot Firmware Version: 1.4.1
Management Firmware Version: 1.20.70.50
Workload Version: SSJ 1.2.10
Director Location: Controller
Other Software: None
Boot Firmware Settings
Management Firmware Settings
Minimum Power (Performance per Watt Optimized)
System Under Test Notes
Controller System
Hardware
Hardware Vendor: Dell Inc
Model: PowerEdge R6515
CPU Description: AMD EPYC 7H12, 2.60 GHz
Memory amount (GB): 512
Software
Operating System (OS): Microsoft Windows Server 2022 Standard
JVM Vendor: Oracle Corporation
JVM Version: Java HotSpot(TM) 64-Bit Server VM (build 15.0.2+7-27, mixed mode, sharing)
CCS Version: 1.2.6
Measurement Devices
Power Analyzer pwr1
Hardware Vendor: Yokogawa Meters and Instruments Corporation
Model: WT210
Serial Number: 91H648897
Connectivity: RS-232
Input Connection: Default
Metrology Institute: NIST
Accredited by: TesCom
Calibration Label: 334272376
Date of Calibration: 18-Dec-2024
PTDaemon Host System: same as CCS
PTDaemon Host OS: same as CCS
PTDaemon Version: 1.11.1-462c978e-20240907
Setup Description: Connected to power supply
Temperature Sensor temp1
Hardware Vendor: Digi International Inc.
Model: Watchport/H
Driver Version: 5.10.26.0
Connectivity: USB
PTDaemon Host System: same as CCS
PTDaemon Host OS: same as CCS
Setup Description: 25 mm in front of SUT main airflow intake
Notes
None
Aggregate Electrical and Environmental Data
Target Load Average Active Power (W) Minimum Ambient Temperature (°C)
100% 711 21.6
90% 662 21.6
80% 611 21.6
70% 562 21.6
60% 524 21.6
50% 466 21.6
40% 411 21.6
30% 357 21.6
20% 307 21.6
10% 256 21.6
Active Idle 135 21.6
Line Standard Minimum Temperature (°C) Elevation (m)
208V / 60 Hz / 1 phase / 2 wires 21.6 255
See the Power/Temperature Details Report for additional details.
Aggregate Performance Data
Target Load Actual Load ssj_ops
Target Actual
Calibration 1     33,680,792
Calibration 2     33,514,164
Calibration 3     33,461,977
ssj_ops@calibrated=33,488,070
100% 99.3% 33,488,070 33,267,172
90% 89.8% 30,139,263 30,064,850
80% 79.7% 26,790,456 26,689,373
70% 68.5% 23,441,649 22,947,456
60% 60.0% 20,092,842 20,096,512
50% 50.0% 16,744,035 16,751,863
40% 40.0% 13,395,228 13,396,888
30% 30.0% 10,046,421 10,060,939
20% 20.0% 6,697,614 6,703,915
10% 10.0% 3,348,807 3,345,243
Active Idle   0 0
Graph of results
See the Host Performance Report for additional details.