SPECpower_ssj2008 Copyright (C) 2007-2026 Standard Performance Evaluation Corporation Lenovo Global Technology Think System SR665 V3 SPECpower_ssj2008 = 44,648 overall ssj_ops/watt Test Sponsor: Lenovo Global Technology SPEC License #: 9017 Tested By: Lenovo Global Technology Test Location: Beijing, China Test Date: Feb 9, 2026 Publication: Mar 9, 2026 Hardware Availability: Jan-2026 Software Availability: Aug-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% | 99.9% | 38,497,690 | 736 | 52,339 90% | 89.8% | 34,630,340 | 620 | 55,823 80% | 80.0% | 30,841,297 | 574 | 53,713 70% | 70.0% | 26,975,750 | 533 | 50,574 60% | 60.0% | 23,128,562 | 488 | 47,359 50% | 50.0% | 19,273,883 | 442 | 43,608 40% | 40.0% | 15,421,754 | 392 | 39,331 30% | 30.0% | 11,567,362 | 340 | 34,006 20% | 20.0% | 7,705,142 | 284 | 27,089 10% | 10.0% | 3,857,965 | 227 | 17,013 Active Idle | 0 | 109 | 0 sum of ssj_ops / sum of power = | 44,648 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:4P57A78359 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): Microsoft Windows Server 2022 Datacenter OS Version: Version 21H2(OS Build 20348.4052) Filesystem: NTFS 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:AllocatePrefetchDistance=256 -XX:AllocatePrefetchLines=8 -XX:AutoBoxCacheMax=20000 -XX:+UseParallelGC -XX:FreqInlineSize=2500 -XX:CompileThresholdScaling=210 JVM Affinity: start /NODE [0-19] /AFFINITY [0xF,0xF0,0xF00,0xF000,0xF0000,0xF00000,0xF0 00000,0xF0000000] 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: KB5063880 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:2400 * 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 Windows Remote Desktop Connection * Using the local security settings console, "lock pages in memory" was enabled for the user running the benchmark * Balanced mode * Hard Disk set to turn off after 1 minute * Display set to turn off after 1 minute * Minmum processor state set to 0%. * Maximum processor state set to 100%. * Using Windows PowerShell, set the following powercfg properties: * Powercfg /setacvalueindex scheme_current sub_processor PROCTHROTTLEMIN 0 * Powercfg /setacvalueindex scheme_current sub_processor PROCTHROTTLEMAX 100 * Powercfg /setacvalueindex scheme_current sub_processor PERFEPP 0 * Powercfg /setacvalueindex scheme_current sub_processor perfautonomous 1 * Powercfg /setactive scheme_current * Each JVM instance was bound to 4 logical processors * The system ROM used for this result contains AMD AGESA version 4F10100B00000000 for the AMD EPYC 9845 processor Controller System HARDWARE Hardware Vendor: Lenovo Global Technology Model: Thinksystem SR665 CPU Description: 2 x AMD EPYC 7773X Memory amount (GB): 512 SOFTWARE Operating System (OS): Microsoft Windows Server 2022 DataCenter - Version 21H2 (OS Build 20348.1249) 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: C3SH31010E Connectivity: USB Input Connection: Default Metrology Institute: China National Accreditation Service for Conformity Assessment (CNAS) Accredited by: CHINA CEPEREI LABORATORY CALIBRATION & TESTING CENTRE Calibration Label: 1GA25011731-0002 Date of Calibration: 15-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% | 736 | 23.7 90% | 620 | 23.8 80% | 574 | 23.9 70% | 533 | 24.1 60% | 488 | 24.3 50% | 442 | 24.4 40% | 392 | 24.2 30% | 340 | 24.1 20% | 284 | 24.1 10% | 227 | 24.1 Active Idle | 109 | 24.2 Line Standard | Minimum | Elevation (m) | Temperature | | (Degrees C) | ------------------------- | --------------- | --------------- 220V / 50 Hz / 1 phase / | 23.7 | 43 2 wires | | See the Power/Temperature Details Report (power_ssj2008-20260209-01555-power.txt) for additional details. Aggregate Performance Data Target Load | Actual Load | ssj_ops | | Target | Actual ----------------- | ----------------- | ----------------- | ----------------- Calibration 1 | | | 36,491,920 Calibration 2 | | | 38,585,717 Calibration 3 | | | 38,510,302 ssj_ops@calibrated=38,548,009 100% | 99.9% | 38,548,009 | 38,497,690 90% | 89.8% | 34,693,209 | 34,630,340 80% | 80.0% | 30,838,408 | 30,841,297 70% | 70.0% | 26,983,607 | 26,975,750 60% | 60.0% | 23,128,806 | 23,128,562 50% | 50.0% | 19,274,005 | 19,273,883 40% | 40.0% | 15,419,204 | 15,421,754 30% | 30.0% | 11,564,403 | 11,567,362 20% | 20.0% | 7,709,602 | 7,705,142 10% | 10.0% | 3,854,801 | 3,857,965 Active Idle | | 0 | 0 See the Host Performance Report (power_ssj2008-20260209-01555.WIN-TP51KHACMDT.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]