SPECpower_ssj2008

Dell Inc. PowerEdge R7725 (AMD EPYC 9845)			SPECpower_ssj2008 = 38,812 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:	Jun 12, 2026
Hardware Availability:	May-2026	Software Availability:	Jan-2026	Publication:	Jun 30, 2026
System Source:	Single Supplier	System Designation:	Server	Power Provisioning:	Line-powered

Hardware
Hardware Vendor:	Dell Inc.
Model:	PowerEdge R7725 (AMD EPYC 9845)
Form Factor:	2U
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 PC5-6400R, slots A1-A12, B1-B12 populated.
Power Supply Quantity and Rating (W):	1 x 1500
Power Supply Details:	1500W Titanium Efficiency (Dell P/N: 1PKMH)
Disk Drive:	1 x 480 GB NVMe M.2 SSD (Dell P/N- 3H1F4)
Disk Controller:	BOSS N1 (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:	Power Saver plan in OS (see SUT notes)
Operating System (OS):	Microsoft Windows Server 2022 Datacenter
OS Version:	Version 21H2 (OS Build 20348.2113)
Filesystem:	ntfs
JVM Vendor:	Oracle Corporation
JVM Version:	Java HotSpot(TM) 64-Bit Server VM (build 17.0.18+8-LTS-264, mixed mode, sharing)
JVM Command-line Options:	-server -Xmn1300m -Xms1550m -Xmx1550m -XX:+UseParallelGC -XX:ParallelGCThreads=2 -XX:+UseLargePages -XX:InlineSmallCode=3900 -XX:AutoBoxCacheMax=20000 -XX:FreqInlineSize=2500 -XX:CompileThresholdScaling=210 -XX:AllocatePrefetchDistance=384 -XX:AllocatePrefetchLines=10 -XX:+UseBiasedLocking -XX:+AggressiveHeap -XX:+OptimizeFill -XX:UseAVX=1 -XX:LargePageSizeInBytes=2m
JVM Affinity:	start /NODE [0-19] /AFFINITY [0xF,0XF0,0XF00,0XF000,0XF0000,0XF00000,0XF000000,0XF0000000]
JVM Instances:	160
JVM Initial Heap (MB):	1550
JVM Maximum Heap (MB):	1550
JVM Address Bits:	64
Boot Firmware Version:	1.7.6
Management Firmware Version:	1.30.10.50
Workload Version:	SSJ 1.2.10
Director Location:	Controller
Other Software:	None

Dram Refresh Delay = Performance
DIMM Self Healing (Post Package Repair) on Uncorrectable Memory Error = Disabled
Virtualization Technology = Disabled
L1 Stream HW Prefetcher = Disabled
L2 Stream HW Prefetcher = Disabled
L1 Stride Prefetcher = Disabled
Numa Nodes per socket = 2
L3 cache as NUMA domain = Enabled
AVX 512 = Enabled
ACPI CST C2 Latency = 800
System Profile = Custom
Memory Frequency = 4800MT/s
Turbo Boost = Disabled
Determinism Control = Manual
Determinism Slider = Performance Determinism
Power Profile Select = Balanced Memory Performance Mode
Adaptive Allocation = Enabled
CPPC = Disabled
XGMI Max Speed = 20GT/s
PPT control = Manual
Customized PPT = 320
Boost Fmax = Manual
Manual Boost FMAX = 2400
Memory Patrol Scrub = Disabled
ApbDis = Enabled
ApbDis fixed DF P-state = P2
PDR Tuning = Blended
TDP Control = Manual
Customized cTDP = 320
DLWM = Forced value
DLWM forced width = x4

Minimum Power (Performance per Watt Optimized)

Each JVM instance was bound to 4 logical processors
SPECpower_ssj.props input.load_level.number_warehouses set to 640 due to a known inconsistency in processor reporting with this Java version
Using Windows PowerShell, set the following powercfg properties
powercfg /setacvalueindex scheme_current sub_processor CPOVERUTIL 60
Powercfg /setacvalueindex scheme_current sub_processor PERFBOOSTMODE 3
powercfg /setacvalueindex scheme_current sub_processor CPMINCORES1 100
powercfg /setacvalueindex scheme_current sub_processor CPMINCORES 100
powercfg /setacvalueindex scheme_current sub_processor PERFDECTHRESHOLD 95
powercfg /setacvalueindex scheme_current sub_processor PERFINCTHRESHOLD 98
Powercfg /setactive scheme_current
Power Plan Minimum processor state set to 0%
Power Plan Maximum processor state set to 100%
Using the local security settings console, "lock pages in memory" was enabled for the user running the benchmark
Hard Disk set to turn off after 1 minute

The system ROM used for this result contains AMD AGESA version 5910100B00000000 for the AMD EPYC 9845 processor.

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

Power Analyzer pwr1
Hardware Vendor:	Yokogawa Meters and Instruments Corporation
Model:	WT310
Serial Number:	T11733386
Connectivity:	RS-232
Input Connection:	Default
Metrology Institute:	NIST
Accredited by:	TesCom
Calibration Label:	TI26623
Date of Calibration:	13-Aug-2025
PTDaemon Host System:	same as CCS
PTDaemon Host OS:	same as CCS
PTDaemon Version:	1.11.4-5bcc369b-20260119
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

None

Target Load	Average Active Power (W)	Minimum Ambient Temperature (°C)
100%	711	22.6
90%	664	22.6
80%	612	22.6
70%	561	22.6
60%	510	22.6
50%	459	22.6
40%	404	22.6
30%	348	22.6
20%	291	22.6
10%	235	22.6
Active Idle	110	22.6

Line Standard	Minimum Temperature (°C)	Elevation (m)
208V / 60 Hz / 1 phase / 2 wires	22.6	255

See the Power/Temperature Details Report for additional details.

See the Host Performance Report for additional details.

SPECpower_ssj2008 Reporter Version: [SSJ 1.2.10, May 9, 2012]