Lenovo Global Technology Think System SR630 V4 SPECpower_ssj2008 = 25,474 overall ssj_ops/watt
Test Sponsor: Lenovo Global Technology SPEC License #: 9017 Test Method: Single Node
Tested By: Lenovo Global Technology Test Location: Beijing, China Test Date: Jun 29, 2026
Hardware Availability: Feb-2026 Software Availability: Nov-2025 Publication: Jul 14, 2026
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% 21,936,794 714 30,740
90% 89.9% 19,799,212 629 31,474
80% 80.0% 17,616,746 562 31,362
70% 70.0% 15,409,929 511 30,161
60% 60.0% 13,214,496 458 28,825
50% 50.0% 11,010,874 411 26,781
40% 40.0% 8,816,220 370 23,835
30% 30.0% 6,608,604 340 19,452
20% 20.0% 4,404,580 298 14,759
10% 10.0% 2,203,341 253 8,719
Active Idle 0 205 0
∑ssj_ops / ∑power = 25,474
Graph of results
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 SR630 V4
Form Factor: 1U
CPU Name: Intel Xeon 6787P
CPU Characteristics: 86-Core,2.00GHz,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 chip
Tertiary Cache: 336 MB I+D on chip per chip
Other Cache: None
Memory Amount (GB): 512
# and size of DIMM: 16 x 32 GB
Memory Details: 16 x 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 (W): 2 x 1300
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 Cards (NICs) Installed: 1 x ThinkSystem 10/25GbE 2-Port Ethernet Adapter P/N:4XC7A08238
NICs Enabled in Firmware / OS / Connected: 2/2/1
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 20348.4405)
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 -Xmn1900m -Xms2048m -Xmx2048m -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 [0,2,4,6] /AFFINITY [0x3,0xc,0x30,0xc0,0x300,0xc00,0x3000,0xc000,0x30000,0xc0000,0x300000,0xc00000,0x3000000,0xc000000,0x30000000,0xc0000000,0x300000000,0xc00000000,0x3000000000,0xc000000000,0x30000000000,0xc0000000000] start /NODE [1,3,5,7] /AFFINITY [0x3,0xc,0x30,0xc0,0x300,0xc00,0x3000,0xc000,0x30000,0xc0000,0x300000,0xc00000,0x3000000,0xc000000,0x30000000,0xc0000000,0x300000000,0xc00000000,0x3000000000,0xc000000000,0x30000000000]
JVM Instances: 172
JVM Initial Heap (MB): 2048
JVM Maximum Heap (MB): 2048
JVM Address Bits: 64
Boot Firmware Version: IHE116I
Management Firmware Version: IHX430Y
Workload Version: SSJ 1.2.10
Director Location: Controller
Other Software: KB5068787
Boot Firmware Settings
Management Firmware Settings
None
System Under Test Notes
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: 1.11.4-5bcc369b-20260119
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
Aggregate Electrical and Environmental Data
Target Load Average Active Power (W) Minimum Ambient Temperature (°C)
100% 714 22.6
90% 629 22.7
80% 562 22.8
70% 511 22.8
60% 458 22.8
50% 411 22.6
40% 370 22.6
30% 340 22.6
20% 298 22.6
10% 253 22.5
Active Idle 205 22.2
Line Standard Minimum Temperature (°C) Elevation (m)
220V / 50 Hz / 1 phase / 2 wires 22.2 43
See the Power/Temperature Details Report for additional details.
Aggregate Performance Data
Target Load Actual Load ssj_ops
Target Actual
Calibration 1     20,803,895
Calibration 2     21,920,052
Calibration 3     22,106,384
ssj_ops@calibrated=22,013,218
100% 99.7% 22,013,218 21,936,794
90% 89.9% 19,811,896 19,799,212
80% 80.0% 17,610,575 17,616,746
70% 70.0% 15,409,253 15,409,929
60% 60.0% 13,207,931 13,214,496
50% 50.0% 11,006,609 11,010,874
40% 40.0% 8,805,287 8,816,220
30% 30.0% 6,603,965 6,608,604
20% 20.0% 4,402,644 4,404,580
10% 10.0% 2,201,322 2,203,341
Active Idle   0 0
Graph of results
See the Host Performance Report for additional details.