SPECpower_ssj2008 Copyright (C) 2007-2026 Standard Performance Evaluation Corporation Compal Electronics, Inc. SR224-2A SPECpower_ssj2008 = 30,134 overall ssj_ops/watt Test Sponsor: Compal Electronics, Inc. SPEC License #: 6857 Tested By: Compal Electronics, Inc. Test Location: Neihu Dist, Taipei City, Taiwan (R.O.C.) Test Date: Jan 20, 2026 Publication: Mar 9, 2026 Hardware Availability: Mar-2025 Software Availability: Nov-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% | 99.6% | 37,760,479 | 997 | 37,871 90% | 90.0% | 34,104,590 | 936 | 36,453 80% | 80.0% | 30,321,028 | 867 | 34,988 70% | 70.0% | 26,513,094 | 801 | 33,098 60% | 60.1% | 22,759,018 | 726 | 31,354 50% | 50.0% | 18,944,729 | 652 | 29,060 40% | 40.0% | 15,160,315 | 576 | 26,324 30% | 30.0% | 11,358,135 | 493 | 23,018 20% | 20.0% | 7,580,525 | 408 | 18,573 10% | 10.0% | 3,788,849 | 318 | 11,906 Active Idle | 0 | 138 | 0 sum of ssj_ops / sum of power = | 30,134 System Under Test Set: 'sut' Set Identifier: sut Set Description: System Under Test # of Identical Nodes: 1 Comment: SUT HARDWARE Hardware Vendor: Compal Electronics, Inc. Model: SR224-2A Form Factor: 2U CPU Name: AMD EPYC 9755 2.7 GHz CPU Characteristics: 128 core, 2.7GHz, 512MB L3 Cache CPU Frequency (MHz): 2700 CPU(s) Enabled: 256 cores, 2 chips, 128 cores/chip Hardware Threads: 512 (2 / core) CPU(s) Orderable: 1,2 chips Primary Cache: 32 KB I + 48 KB D on chip per core Secondary Cache: 1 MB I+D on chip per core Tertiary Cache: 512 MB I+D on chip per chip, 32 MB shared/8 cores Other Cache: None Memory Amount (GB): 384 # and size of DIMM: 24 x 16384 MB Memory Details: [16GB 1Rx8 PC5-4800; slots A0, B0, C0, D0, E0, F0, G0 ,H0 ,I0 ,J0 ,K0 ,L0 populated] Power Supply Quantity and Rating 1 x 1300 (W): Power Supply Details: Acbel R1CA2132A-T00A Disk Drive: 1 x 1TB M.2 NVMe Express SSD Disk Controller: Integrated PCIe controller # and type of Network Interface 1 x OCP i350 4-port Cards (NICs) Installed: NICs Enabled in Firmware / OS / 4/4/1 Connected: Network Speed (Mbit): 1000 Keyboard: None Mouse: None Monitor: None Optical Drives: No Other Hardware: None SOFTWARE Power Management: Preferred plans in OS: Power Saver (see SUT Notes) Operating System (OS): Microsoft Windows Server 2022 Datacenter Evaluation OS Version: Version 21H2 (OS Build 20348.3807) Filesystem: NTFS JVM Vendor: Oracle JVM Version: "17.0.12" 2024-07-16 LTS Java(TM) SE Runtime Environment (build 17.0.12+8-LTS-286) Java HotSpot(TM) 64-Bit Server VM (build 17.0.12+8-LTS-286, mixed mode, sharing) JVM Command-line Options: -server -Xms2048m -Xmx2048m -Xmn1900m -XX:+UseParallelGC -XX:ParallelGCThreads=2 -XX:+UseLargePages -XX:LargePageSizeInBytes=2m -XX:+UseBiasedLocking -XX:InlineSmallCode=3900 -XX:UseAVX=0 -XX:AutoBoxCacheMax=20000 -XX:+OptimizeFill -XX:+AggressiveHeap -XX:FreqInlineSize=2500 -XX:AllocatePrefetchDistance=256 -XX:AllocatePrefetchLines=8 JVM Affinity: start /NODE [0-31] /AFFINITY [0xF,0xF0,0xF00,0xF000] JVM Instances: 128 JVM Initial Heap (MB): 2048 JVM Maximum Heap (MB): 2048 JVM Address Bits: 64 Boot Firmware Version: 10.27.0 Management Firmware Version: 1.41.0 Workload Version: SSJ 1.2.10 Director Location: Controller Other Software: None Boot Firmware Settings AMI Aptio Setup Utility : * L1 Stream HW Prefetcher = Disabled * L2 Stream HW Prefetcher = Disabled * NUMA nodes per socket = NPS4 * ACPI SRAT L3 Cache As NUMA Domain = Enabled * Power Profile Selection = Efficiency Mode * Determinism Enable = Power * SMEE = Disabled * SVM Mode = Disabled * Core Performance Boost = Disabled * SR-IOV Support = Disabled * DRAM Scrub time = Disabled * DDR Power Down Enable = Enabled * xGMI Link Width Control = Manual * xGMI Max Link Width Control = Manual * 4-link xGMI max speed = 20Gbps * 3-link xGMI max speed = 20Gbps * xGMI Max Link Width = 0(x4) * SATA Enable = Disabled * PCIE Link Speed Capability = Gen1 * ACPI CST C2 Latency = 18 * SATA Enable = Disabled * AVX512 = Disabled Management Firmware Settings none System Under Test Notes * Set input.load_level.number_warehouses=512 in the SPECpower_ssj.props * Each JVM instance was bound to 4 logical processors * OS Tunings: * 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 * Using Windows PowerShell, set the following powercfg properties: * Powercfg /setacvalueindex scheme_current sub_processor PERFDECTHRESHOLD 95 * Powercfg /setactive scheme_current * Display set to turn off after 1 minute * The system ROM used for this result contains AMD AGESA version 1.0.0.7 and microcode 0xb002152 for the AMD EPYC 9755 processor Controller System HARDWARE Hardware Vendor: Compal Electronics, Inc. Model: SR121-2A CPU Description: AMD EPYC 9184X, 3.54GHz Memory amount (GB): 64 SOFTWARE Operating System (OS): Windows Server 2019 DC JVM Vendor: Oracle JVM Version: java version "17.0.7" 2023-04-18 LTS, Java HotSpot(TM) 64-Bit Server VM (build 17.0.7+8-LTS-224, mixed mode, sharing), Java(TM) SE Runtime Environment (build 17.0.7+8-LTS-224) CCS Version: 1.2.6 Measurement Devices POWER ANALYZER PWR1 Hardware Vendor: Yokogawa Model: WT310E Serial Number: C3UE28006E Connectivity: USB Input Connection: Default Metrology Institute: NML (National Measurement Laboratory,Taiwan) Accredited by: OMNIO Calibration Laboratory Ltd. Calibration Label: OCL-250527T022 Date of Calibration: 28-May-2025 PTDaemon Host System: same as CCS PTDaemon Host OS: same as CCS PTDaemon Version: 1.11.3-a7835373-20251015 Setup Description: SUT Power Supply 1. TEMPERATURE SENSOR TEMP1 Hardware Vendor: Cleware Model: USB-Temp Driver Version: 5.3.4.0 Connectivity: USB PTDaemon Host System: same as CCS PTDaemon Host OS: same as CCS Setup Description: The front top of SUT main intake Notes None Aggregate Electrical and Environmental Data Target Load | Average | Minimum | Active | Ambient | Power (W) | Temperature | | (Degrees C) ----------- | ---------- | ------------- 100% | 997 | 20.9 90% | 936 | 21.2 80% | 867 | 21.3 70% | 801 | 21.4 60% | 726 | 21.5 50% | 652 | 21.6 40% | 576 | 21.7 30% | 493 | 21.8 20% | 408 | 21.6 10% | 318 | 21.6 Active Idle | 138 | 21.6 Line Standard | Minimum | Elevation (m) | Temperature | | (Degrees C) | ------------------------- | --------------- | --------------- 225V / 60 Hz / 1 phase / | 20.9 | 132 2 wires | | See the Power/Temperature Details Report (power_ssj2008-20260127-01554-power.txt) for additional details. Aggregate Performance Data Target Load | Actual Load | ssj_ops | | Target | Actual ----------------- | ----------------- | ----------------- | ----------------- Calibration 1 | | | 38,135,771 Calibration 2 | | | 37,909,843 Calibration 3 | | | 37,883,521 ssj_ops@calibrated=37,896,682 100% | 99.6% | 37,896,682 | 37,760,479 90% | 90.0% | 34,107,014 | 34,104,590 80% | 80.0% | 30,317,346 | 30,321,028 70% | 70.0% | 26,527,677 | 26,513,094 60% | 60.1% | 22,738,009 | 22,759,018 50% | 50.0% | 18,948,341 | 18,944,729 40% | 40.0% | 15,158,673 | 15,160,315 30% | 30.0% | 11,369,005 | 11,358,135 20% | 20.0% | 7,579,336 | 7,580,525 10% | 10.0% | 3,789,668 | 3,788,849 Active Idle | | 0 | 0 See the Host Performance Report (power_ssj2008-20260127-01554.WIN-2F2HG5E37AL.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]