SPECpower_ssj2008 Copyright (C) 2007-2026 Standard Performance Evaluation Corporation Lenovo Global Technology Think System SR650 V4 SPECpower_ssj2008 = 26,126 overall ssj_ops/watt Test Sponsor: Lenovo Global Technology SPEC License #: 9017 Tested By: Lenovo Global Technology Test Location: Beijing, China Test Date: Jul 22, 2026 Publication: Aug 11, 2026 Hardware Availability: Jul-2026 Software Availability: Jun-2024 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% | 99.4% | 25,507,370 | 886 | 28,805 90% | 90.0% | 23,095,498 | 828 | 27,902 80% | 79.8% | 20,473,255 | 655 | 31,271 70% | 70.0% | 17,963,503 | 571 | 31,435 60% | 59.0% | 15,141,860 | 497 | 30,439 50% | 49.7% | 12,756,200 | 443 | 28,767 40% | 38.8% | 9,964,113 | 389 | 25,596 30% | 30.0% | 7,699,527 | 349 | 22,051 20% | 20.0% | 5,130,083 | 302 | 16,986 10% | 10.0% | 2,563,086 | 252 | 10,187 Active Idle | 0 | 198 | 0 sum of ssj_ops / sum of power = | 26,126 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 SR650 V4 Form Factor: 2U CPU Name: Intel Xeon 6787P 2.0 GHz CPU Characteristics: 86 core, 2.0GHz, 336MB L3 Cache CPU Frequency (MHz): 2000 CPU(s) Enabled: 172 cores, 2 chips, 86 cores/chip Hardware Threads: 344 (2 / core) CPU(s) Orderable: 1,2 chips Primary Cache: 64 KB I + 48 KB D on chip per core Secondary Cache: 2 MB I+D on chip per core Tertiary Cache: 336 MB I+D on chip per chips Other Cache: None Memory Amount (GB): 512 # and size of DIMM: 16 x 32768 MB Memory Details: 32GB 2Rx8 PC5-6400-R; slots 1, 3, 5, 7, 10, 12, 14, 16, 17, 19, 21, 23, 26, 28, 30 and 32 populated Power Supply Quantity and Rating 2 x 1300 (W): Power Supply Details: Lenovo P/N:4P57A88621 Disk Drive: 1 x 960GB 2.5" NVMe SSD P/N:4XB7A93066 Disk Controller: Integrated NvMe controller # and type of Network Interface 1 x ThinkSystem Broadcom 5719 1GbE RJ45 Cards (NICs) Installed: 4-port OCP Ethernet Adapter P/N:4XC7A08235 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: Enabled (see SUT Notes) Operating System (OS): SUSE Linux Enterprise Server 15 SP6 OS Version: 6.4.0-150600.21-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 -Xmn1900m -Xms2048m -Xmx2048m -XX:ParallelGCThreads=2 -XX:+UseLargePages -XX:InlineSmallCode=1500 -XX:AutoBoxCacheMax=20000 -XX:+UseParallelGC -XX:FreqInlineSize=2500 -XX:CompileThresholdScaling=210 JVM Affinity: for each physicalCore { numactl -C physicalCoreId, physicalCoreId + 1 } JVM Instances: 172 JVM Initial Heap (MB): 2048 JVM Maximum Heap (MB): 2048 JVM Address Bits: 64 Boot Firmware Version: ihe120l Management Firmware Version: ihx430y Workload Version: SSJ 1.2.10 Director Location: Controller Other Software: None Boot Firmware Settings * Operating Mode: Custom Mode * Page Policy: Adaptive * Turbo Mode: Enabled * Hardware Prefetcher: Disable * Adjacent Cache Prefetch: Disable * DCU Streamer Prefetcher: Disable * SNC: Enabled * Virtual Numa: Enabled * Homeless Prefetch:Disable * CPU Frequency Limits: Restrict maximum frequency to 2.60Ghz Management Firmware Settings None System Under Test Notes * Benchmark started via ssh * Each JVM instance was bound to 2 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 Intel microcode version 0x1000423 for the Intel Xeon 6787P 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: 1.11.4-5bcc369b-20260119 Setup Description: Connected to PSU 1 PSU 2 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 344 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% | 886 | 21.4 90% | 828 | 21.4 80% | 655 | 21.5 70% | 571 | 21.4 60% | 497 | 21.4 50% | 443 | 21.6 40% | 389 | 21.8 30% | 349 | 21.9 20% | 302 | 21.9 10% | 252 | 21.9 Active Idle | 198 | 21.9 Line Standard | Minimum | Elevation (m) | Temperature | | (Degrees C) | ------------------------- | --------------- | --------------- 220V / 50 Hz / 1 phase / | 21.4 | 43 2 wires | | See the Power/Temperature Details Report (power_ssj2008-20260727-01581-power.txt) for additional details. Aggregate Performance Data Target Load | Actual Load | ssj_ops | | Target | Actual ----------------- | ----------------- | ----------------- | ----------------- Calibration 1 | | | 24,304,779 Calibration 2 | | | 25,587,612 Calibration 3 | | | 25,718,640 ssj_ops@calibrated=25,653,126 100% | 99.4% | 25,653,126 | 25,507,370 90% | 90.0% | 23,087,813 | 23,095,498 80% | 79.8% | 20,522,501 | 20,473,255 70% | 70.0% | 17,957,188 | 17,963,503 60% | 59.0% | 15,391,876 | 15,141,860 50% | 49.7% | 12,826,563 | 12,756,200 40% | 38.8% | 10,261,250 | 9,964,113 30% | 30.0% | 7,695,938 | 7,699,527 20% | 20.0% | 5,130,625 | 5,130,083 10% | 10.0% | 2,565,313 | 2,563,086 Active Idle | | 0 | 0 See the Host Performance Report (power_ssj2008-20260727-01581.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]