SPECpower_ssj2008 Copyright (C) 2007-2026 Standard Performance Evaluation Corporation Lenovo Global Technology Think System SR665 V3 SPECpower_ssj2008 = 43,403 overall ssj_ops/watt Test Sponsor: Lenovo Global Technology SPEC License #: 9017 Tested By: Lenovo Global Technology Test Location: Beijing, China Test Date: Jan 24, 2026 Publication: Feb 10, 2026 Hardware Availability: Jan-2026 Software Availability: Jun-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% | 99.5% | 37,001,234 | 696 | 53,157 90% | 90.0% | 33,454,592 | 646 | 51,801 80% | 80.0% | 29,744,170 | 574 | 51,798 70% | 70.0% | 26,029,186 | 529 | 49,173 60% | 60.0% | 22,304,861 | 482 | 46,243 50% | 50.0% | 18,588,388 | 435 | 42,705 40% | 40.0% | 14,859,959 | 387 | 38,437 30% | 30.0% | 11,147,127 | 334 | 33,387 20% | 20.0% | 7,431,887 | 279 | 26,654 10% | 10.0% | 3,718,645 | 226 | 16,428 Active Idle | 0 | 118 | 0 sum of ssj_ops / sum of power = | 43,403 System Under Test Set: 'sut' Set Identifier: sut Set Description: System Under Test # of Identical Nodes: 1 Comment: 'SUT' HARDWARE Hardware Vendor: Lenovo Global Technology Model: Think System SR665 V3 Form Factor: 2U CPU Name: AMD EPYC 9845 2.1 GHz CPU Characteristics: 160-Core,2.10GHz 320MB L3 Cache CPU Frequency (MHz): 2100 CPU(s) Enabled: 320 cores, 2 chips, 160 cores/chip Hardware Threads: 640 (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: 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: 24 x 16GB 1Rx8 PC5-6400-RD1; slots 1 to 24 populated Power Supply Quantity and Rating 1 x 1800 (W): Power Supply Details: Lenovo P/N:4P57A78362 Disk Drive: 1 x 480GB M.2 SSD P/N:4XB7B07588 M.2 Module P/N:4Y37A79663 Disk Controller: Integrated SATA controller # and type of Network Interface 1 x ThinkSystem 10/25GbE 2-Port Ethernet Cards (NICs) Installed: Adapter P/N:4XC7A08238 NICs Enabled in Firmware / OS / 2/2/1 Connected: Network Speed (Mbit): 10000 Keyboard: None Mouse: None Monitor: None Optical Drives: No Other Hardware: None SOFTWARE Power Management: Enabled (see SUT Notes) Operating System (OS): SUSE Linux Enterprise Server 15 SP7 OS Version: 6.4.0-150700.51-default Filesystem: xfs JVM Vendor: Oracle Corporation JVM Version: Java HotSpot(TM) 64-Bit Server VM (build 17.0.10+11-LTS-240, mixed mode, sharing), version 17.0.10 JVM Command-line Options: -server -Xmn1300m -Xms1550m -Xmx1550m -XX:ParallelGCThreads=2 -XX:+UseLargePages -XX:InlineSmallCode=1500 -XX:AutoBoxCacheMax=20000 -XX:+UseParallelGC -XX:FreqInlineSize=2500 -XX:CompileThresholdScaling=210 -XX:+AlwaysPreTouch JVM Affinity: for each even physicalCoreId { numactl -C physicalCoreId, physicalCoreId + 1, physicalCoreId + 320, physicalCoreId + 321} JVM Instances: 160 JVM Initial Heap (MB): 1550 JVM Maximum Heap (MB): 1550 JVM Address Bits: 64 Boot Firmware Version: KAE142F Management Firmware Version: KAX364U Workload Version: SSJ 1.2.10 Director Location: Controller Other Software: None Boot Firmware Settings * Choose Operating Mode: Custom Mode * NUMA nodes per socket: NPS2 * ACPI SRAT L3 Cache as NUMA Domain: Enable * Memory Speed: Minimum * BoostFmax:Manual * BoostFmax:2200 * L1 Stream HW Prefetcher: Disable * L2 Stream HW Prefetcher: Disable * PCIe Gen Speed Selection: Gen1 Management Firmware Settings None System Under Test Notes * Benchmark started via ssh * Each JVM instance was bound to 4 logical processors * cpupower frequency-set -g ondemand * kernal parameter:pcie_aspm=force pcie_aspm.policy=powersupersave * echo -n 98 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold * echo -n 1000000 > /sys/devices/system/cpu/cpufreq/ondemand/sampling_rate * The system ROM used for this result contains AMD AGESA version 0xb10104f for the AMD EPYC 9845 processor Controller System HARDWARE Hardware Vendor: Lenovo Global Technology Model: ThinkSystem SR650 CPU Description: 2 x Intel Xeon Gold 5218 Memory amount (GB): 768 SOFTWARE Operating System (OS): Microsoft Windows Server 2019 DataCenter - Version 1809 (OS Build 17763.2268) JVM Vendor: Oracle Corporation JVM Version: Oracle Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode), version 1.7.0_80 CCS Version: 1.2.6 Measurement Devices POWER ANALYZER PWR1 Hardware Vendor: YOKOGAWA, Inc. Model: WT310E Serial Number: C3UG05013E Connectivity: USB Input Connection: Default Metrology Institute: China National Accreditation Service for Conformity Assessment (CNAS) Accredited by: CHINA CEPREI LABORATORY CALIBRATION & TESTING CENTRB Calibration Label: 1GA25011731-0007 Date of Calibration: 19-Sep-2025 PTDaemon Host System: same as CCS PTDaemon Host OS: same as CCS PTDaemon Version: 1.11.3-a7835373-20251015 Setup Description: Connected to PSU 1 TEMPERATURE SENSOR TEMP1 Hardware Vendor: Digi International, Inc. Model: Watchport/H Driver Version: 5.70.105.0 Connectivity: USB PTDaemon Host System: same as CCS PTDaemon Host OS: same as CCS Setup Description: 50 mm in front of SUT main intake Notes * SPECpower_ssj.props input.load_level.number_warehouses set to 640 due to a known inconsistency in processor reporting with this Java version. Aggregate Electrical and Environmental Data Target Load | Average | Minimum | Active | Ambient | Power (W) | Temperature | | (Degrees C) ----------- | ---------- | ------------- 100% | 696 | 22.6 90% | 646 | 22.5 80% | 574 | 22.6 70% | 529 | 22.7 60% | 482 | 22.8 50% | 435 | 22.8 40% | 387 | 22.9 30% | 334 | 23.0 20% | 279 | 23.0 10% | 226 | 23.0 Active Idle | 118 | 23.1 Line Standard | Minimum | Elevation (m) | Temperature | | (Degrees C) | ------------------------- | --------------- | --------------- 220V / 50 Hz / 1 phase / | 22.5 | 43 2 wires | | See the Power/Temperature Details Report (power_ssj2008-20260126-01552-power.txt) for additional details. Aggregate Performance Data Target Load | Actual Load | ssj_ops | | Target | Actual ----------------- | ----------------- | ----------------- | ----------------- Calibration 1 | | | 34,638,315 Calibration 2 | | | 37,149,746 Calibration 3 | | | 37,193,531 ssj_ops@calibrated=37,171,638 100% | 99.5% | 37,171,638 | 37,001,234 90% | 90.0% | 33,454,474 | 33,454,592 80% | 80.0% | 29,737,311 | 29,744,170 70% | 70.0% | 26,020,147 | 26,029,186 60% | 60.0% | 22,302,983 | 22,304,861 50% | 50.0% | 18,585,819 | 18,588,388 40% | 40.0% | 14,868,655 | 14,859,959 30% | 30.0% | 11,151,491 | 11,147,127 20% | 20.0% | 7,434,328 | 7,431,887 10% | 10.0% | 3,717,164 | 3,718,645 Active Idle | | 0 | 0 See the Host Performance Report (power_ssj2008-20260126-01552.localhost.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]