Compal Electronics, Inc. SR224-2A SPECpower_ssj2008 = 39,794 overall ssj_ops/watt
Test Sponsor: Compal Electronics, Inc. SPEC License #: 6857 Test Method: Single Node
Tested By: Compal Electronics, Inc. Test Location: Neihu Dist, Taipei City, Taiwan (R.O.C.) Test Date: Apr 13, 2026
Hardware Availability: Jul-2025 Software Availability: Feb-2026 Publication: May 22, 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% 99.4% 36,681,569 770 47,636
90% 90.0% 33,210,883 717 46,295
80% 80.0% 29,514,736 628 47,006
70% 70.0% 25,818,468 560 46,107
60% 60.0% 22,119,053 512 43,194
50% 50.0% 18,443,445 464 39,707
40% 40.0% 14,756,457 413 35,739
30% 30.0% 11,068,350 358 30,920
20% 20.0% 7,383,971 302 24,439
10% 10.0% 3,689,412 247 14,913
Active Idle 0 121 0
∑ssj_ops / ∑power = 39,794
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: Compal Electronics, Inc.
Model: SR224-2A
Form Factor: 2U
CPU Name: AMD EPYC 9845 2.1 GHz
CPU Characteristics: 160 core, 2.1GHz, 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 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 (W): 1 x 1300
Power Supply Details: R1CA2132A-T00A
Disk Drive: 1 x 960GB M.2 NVME Express SSD
Disk Controller: Integrated PCIe controller
# and type of Network Interface Cards (NICs) Installed: 1 x PCIE i350 4-port
NICs Enabled in Firmware / OS / Connected: 4/4/1
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 20348.4773)
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 -Xmn1300m -Xms1550m -Xmx1550m -XX:+UseParallelGC -XX:ParallelGCThreads=2 -XX:+UseLargePages -XX:InlineSmallCode=3900 -XX:AutoBoxCacheMax=20000 -XX:FreqInlineSize=2500 -XX:CompileThresholdScaling=210 -XX:AllocatePrefetchDistance=384 -XX:AllocatePrefetchLines=10 -XX:+UseBiasedLocking -XX:+AggressiveHeap -XX:+OptimizeFill -XX:UseAVX=1 -XX:LargePageSizeInBytes=2m
JVM Affinity: start /NODE [0-19] /AFFINITY [0xF,0xF0,0xF00,0xF000,0xF0000,0xF00000,0xF000000,0xF0000000]
JVM Instances: 160
JVM Initial Heap (MB): 1550
JVM Maximum Heap (MB): 1550
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
none
Management Firmware Settings
System Under Test Notes
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: 1.11.4-5bcc369b-20260119
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 Active Power (W) Minimum Ambient Temperature (°C)
100% 770 21.5
90% 717 21.7
80% 628 21.5
70% 560 21.4
60% 512 21.5
50% 464 21.8
40% 413 21.8
30% 358 21.6
20% 302 21.4
10% 247 21.3
Active Idle 121 21.3
Line Standard Minimum Temperature (°C) Elevation (m)
225V / 60 Hz / 1 phase / 2 wires 21.3 132
See the Power/Temperature Details Report for additional details.
Aggregate Performance Data
Target Load Actual Load ssj_ops
Target Actual
Calibration 1     37,097,494
Calibration 2     36,916,139
Calibration 3     36,872,997
ssj_ops@calibrated=36,894,568
100% 99.4% 36,894,568 36,681,569
90% 90.0% 33,205,111 33,210,883
80% 80.0% 29,515,654 29,514,736
70% 70.0% 25,826,198 25,818,468
60% 60.0% 22,136,741 22,119,053
50% 50.0% 18,447,284 18,443,445
40% 40.0% 14,757,827 14,756,457
30% 30.0% 11,068,370 11,068,350
20% 20.0% 7,378,914 7,383,971
10% 10.0% 3,689,457 3,689,412
Active Idle   0 0
Graph of results
See the Host Performance Report for additional details.