SPECpower_ssj2008 Copyright (C) 2007-2026 Standard Performance Evaluation Corporation Dell Inc. PowerEdge R7725 SPECpower_ssj2008 = 13,686 overall ssj_ops/watt Test Sponsor: Dell Inc. SPEC License #: 6573 Tested By: Dell Inc. Test Location: Round Rock, TX, USA Test Date: Dec 19, 2025 Publication: Apr 22, 2026 Hardware Availability: Nov-2024 Software Availability: Jul-2025 Test Method: Single Node 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% | 99.7% | 16,374,959 | 883 | 18,537 90% | 90.0% | 14,788,201 | 857 | 17,253 80% | 80.0% | 13,139,580 | 825 | 15,934 70% | 70.0% | 11,506,912 | 763 | 15,076 60% | 60.0% | 9,853,086 | 704 | 14,004 50% | 50.0% | 8,219,702 | 643 | 12,789 40% | 40.0% | 6,566,031 | 532 | 12,347 30% | 30.0% | 4,930,659 | 445 | 11,090 20% | 20.0% | 3,288,436 | 406 | 8,102 10% | 10.0% | 1,646,253 | 353 | 4,669 Active Idle | 0 | 190 | 0 sum of ssj_ops / sum of power = | 13,686 System Under Test Set: 'sut' Set Identifier: sut Set Description: System Under Test # of Identical Nodes: 1 Comment: PowerEdge R7725 HARDWARE Hardware Vendor: Dell Inc. Model: PowerEdge R7725 Form Factor: 2U CPU Name: AMD EPYC 9355 3.55 GHz CPU Characteristics: 32 core, 3.55 GHz, 256 MB L3 Cache, Max Boost Clock up to 4.4 GHz CPU Frequency (MHz): 3550 CPU(s) Enabled: 64 cores, 2 chips, 32 cores/chip Hardware Threads: 128 (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: 256 MB I+D on chip per chip, 32 MB shared / 4 cores Other Cache: None Memory Amount (GB): 1536 # and size of DIMM: 24 x 64 GB Memory Details: 64 GB 2Rx4 PC5-6400-R, Slots A1-12, B1-12 populated. Power Supply Quantity and Rating 2 x 3200 (W): Power Supply Details: 2 x Delta 3200W Titanium Efficiency (DPN - J0KHH) Disk Drive: 4 x 3.84 TB E3.S NVMe (DPN - 6RC59), 2 x 480 GB M.2 NVMe (DPN - 3JC4V) Disk Controller: Onboard PCIe SSD Backplane, PCIe attached Boot Optimized Storage (BOSS) card # and type of Network Interface 1 x Broadcom 5719 Quad Port 1GbE LOM, 1 x Cards (NICs) Installed: Broadcom 57414 Dual Port 25GbE LOM NICs Enabled in Firmware / OS / 6/6/1 Connected: 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 17.0.16+12-LTS-247, mixed mode, sharing) JVM Command-line Options: -server -Xms1500m -Xmx1500m -Xmn1300m -XX:+UseParallelGC -XX:ParallelGCThreads=2 -XX:+UseLargePages -XX:LargePageSizeInBytes=2m -XX:+UseBiasedLocking -XX:InlineSmallCode=1500 -XX:UseAVX=1 -XX:AutoBoxCacheMax=20000 -XX:+OptimizeFill -XX:+AggressiveHeap JVM Affinity: start /NODE [0-15] /AFFINITY [0xF,0xF0] JVM Instances: 32 JVM Initial Heap (MB): 1500 JVM Maximum Heap (MB): 1500 JVM Address Bits: 64 Boot Firmware Version: 1.5.3 Management Firmware Version: 1.20.80.50 A00 Workload Version: SSJ 1.2.10 Director Location: Controller Other Software: None Boot Firmware Settings * NUMA Nodes per Socket: 4 * L3 Cache as NUMA Domain: Enabled * System Profile: Custom * Power Profile Select: Efficiency Mode Management Firmware Settings Minimum Power (Performance per Watt Optimized) System Under Test Notes * Each JVM instance was bound to 4 logical processors * 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 * Display set to turn off after 1 minute * SPECpower_ssj.props input.load_level.number_warehouses set to 128 due to a known inconsistency in processor reporting with this Java version * Power Plan Minimum processor state set to 0% * Power Plan Maximum processor state set to 100% * The System ROM used for this result contains Intel microcode 5A21000B Version for the Intel Xeon processor Controller System HARDWARE Hardware Vendor: Dell Inc Model: PowerEdge T150 CPU Description: Intel Xeon E-2378, 2.60 GHz Memory amount (GB): 32 SOFTWARE Operating System (OS): Microsoft Windows Server 2022 Datacenter JVM Vendor: Oracle Corporation JVM Version: Hotspot(TM) Client VM, version 15.0.2+7 (build 15.0.2+7, mixed mode) CCS Version: 1.2.6 Measurement Devices POWER ANALYZER PWR1 Hardware Vendor: Yokogawa Meters and Instruments Corporation Model: WT310 Serial Number: T11733384 Connectivity: RS-232 Input Connection: Default Metrology Institute: NIST Accredited by: TesCom Calibration Label: T126624 Date of Calibration: 13-Aug-2025 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 | Minimum | Active | Ambient | Power (W) | Temperature | | (Degrees C) ----------- | ---------- | ------------- 100% | 883 | 25.9 90% | 857 | 25.9 80% | 825 | 25.8 70% | 763 | 25.8 60% | 704 | 25.8 50% | 643 | 25.6 40% | 532 | 25.6 30% | 445 | 25.5 20% | 406 | 25.5 10% | 353 | 25.6 Active Idle | 190 | 25.5 Line Standard | Minimum | Elevation (m) | Temperature | | (Degrees C) | ------------------------- | --------------- | --------------- 208V / 60 Hz / 1 phase / | 25.5 | 255 2 wires | | See the Power/Temperature Details Report (power_ssj2008-20260406-01560-power.txt) for additional details. Aggregate Performance Data Target Load | Actual Load | ssj_ops | | Target | Actual ----------------- | ----------------- | ----------------- | ----------------- Calibration 1 | | | 16,617,708 Calibration 2 | | | 16,434,663 Calibration 3 | | | 16,422,965 ssj_ops@calibrated=16,428,814 100% | 99.7% | 16,428,814 | 16,374,959 90% | 90.0% | 14,785,933 | 14,788,201 80% | 80.0% | 13,143,051 | 13,139,580 70% | 70.0% | 11,500,170 | 11,506,912 60% | 60.0% | 9,857,289 | 9,853,086 50% | 50.0% | 8,214,407 | 8,219,702 40% | 40.0% | 6,571,526 | 6,566,031 30% | 30.0% | 4,928,644 | 4,930,659 20% | 20.0% | 3,285,763 | 3,288,436 10% | 10.0% | 1,642,881 | 1,646,253 Active Idle | | 0 | 0 See the Host Performance Report (power_ssj2008-20260406-01560.FHCJ3D4-R7725.txt) for additional details. Copyright (C) 2007-2026 Standard Performance Evaluation Corporation http://www.spec.org - info@spec.org SPECpower_ssj2008 Reporter Version: [SSJ 1.2.10, May 9, 2012]