Dell Inc. PowerEdge XR8720t (Intel Xeon 6716P-B) SPECpower_ssj2008 = 17,889 overall ssj_ops/watt
Test Sponsor: Dell Inc. SPEC License #: 6573 Test Method: Single Node
Tested By: Dell Inc. Test Location: Round Rock, TX, USA Test Date: Feb 25, 2026
Hardware Availability: Jan-2026 Software Availability: Nov-2025 Publication: Mar 24, 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% 99.8% 6,149,456 283 21,743
90% 90.1% 5,549,000 264 21,054
80% 80.0% 4,931,812 220 22,428
70% 70.1% 4,317,807 195 22,186
60% 60.0% 3,699,349 175 21,161
50% 50.0% 3,079,044 157 19,554
40% 40.1% 2,470,264 143 17,334
30% 30.0% 1,850,129 130 14,266
20% 20.1% 1,236,245 119 10,432
10% 10.0% 616,123 107 5,735
Active Idle 0 104 0
∑ssj_ops / ∑power = 17,889
Graph of results
System Under Test
Set: 'sut'
Set Identifier: sut
Set Description: System Under Test
# of Identical Nodes: 1
Comment: PowerEdge XR8720t
Hardware
Hardware Vendor: Dell Inc.
Model: PowerEdge XR8720t (Intel Xeon 6716P-B)
Form Factor: 2U
CPU Name: Intel Xeon 6716P-B 2.5 GHz
CPU Characteristics: 40 core, 2.5 GHz, 160 MB L3 Cache, Max Boost Clock up to 3.5 GHz
CPU Frequency (MHz): 2500
CPU(s) Enabled: 40 cores, 1 chip, 40 cores/chip
Hardware Threads: 80 (2 / core)
CPU(s) Orderable: 1 chip
Primary Cache: 64 KB I + 48 KB D on chip per core
Secondary Cache: 2 MB I+D on chip per core
Tertiary Cache: 160 MB I+D on chip per chip
Other Cache: None
Memory Amount (GB): 128
# and size of DIMM: 4 x 32 GB
Memory Details: 32 GB 2Rx4 PC5-6400-R running at 6400MHz Slots A5-8 populated.
Power Supply Quantity and Rating (W): 1 x 1800
Power Supply Details: 1 x 1800W Titanium Efficiency (SKU: 450-BCXB)
Disk Drive: 1 x 480 GB NVMe Gen4 M.2 SSD
Disk Controller: Integrated PCIe Controller
# and type of Network Interface Cards (NICs) Installed: 1 x Intel(R) Ethernet Connection E825-C
NICs Enabled in Firmware / OS / Connected: 8/8/2
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 16.0
OS Version: 6.12.0-160000.5-default
Filesystem: xfs
JVM Vendor: Oracle
JVM Version: Java HotSpot(TM) 64-Bit Server VM(build 17.0.11+7-LTS-207, mixed mode)
JVM Command-line Options: -server -Xms1024m -Xmx1024m -Xmn800m -XX:+UseParallelGC -XX:ParallelGCThreads=2 -XX:+UseLargePages -XX:LargePageSizeInBytes=2m -XX:+UseBiasedLocking -XX:InlineSmallCode=1500 -XX:UseAVX=1 -XX:AutoBoxCacheMax=20000 -XX:+OptimizeFill -XX:+AggressiveHeap
JVM Affinity: for each physicalCore { numactl -C physicalCoreId, physicalCoreId + 40}
JVM Instances: 40
JVM Initial Heap (MB): 1024
JVM Maximum Heap (MB): 1024
JVM Address Bits: 64
Boot Firmware Version: 1.0.4
Management Firmware Version: 1.30.05.10 A00
Workload Version: SSJ 1.2.10
Director Location: Controller
Other Software: None
Boot Firmware Settings
Management Firmware Settings
none
System Under Test Notes
Controller System
Hardware
Hardware Vendor: Dell Inc
Model: PowerEdge R650xs
CPU Description: 2 x Intel Xeon Gold 5315Y, 3.20 GHz
Memory amount (GB): 512
Software
Operating System (OS): Microsoft Windows Server 2022 Standard
JVM Vendor: Oracle Corporation
JVM Version: Java Development Kit 15.0.2
CCS Version: 1.2.6
Measurement Devices
Power Analyzer pwr1
Hardware Vendor: Yokogawa Meters and Instruments Corporation
Model: WT310
Serial Number: T11733387
Connectivity: RS-232
Input Connection: Default
Metrology Institute: NIST
Accredited by: TesCom
Calibration Label: T126625
Date of Calibration: 13-Aug-2025
PTDaemon Host System: same as CCS
PTDaemon Host OS: same as CCS
PTDaemon Version: 1.11.3-a7835373-20251015
Setup Description: Connected to power supply
Temperature Sensor temp1
Hardware Vendor: Digi International Inc.
Model: Watchport/H
Driver Version: 5.10.26.0
Connectivity: USB
PTDaemon Host System: same as CCS
PTDaemon Host OS: same as CCS
Setup Description: 25 mm in front of SUT main airflow intake
Notes
None
Aggregate Electrical and Environmental Data
Target Load Average Active Power (W) Minimum Ambient Temperature (°C)
100% 283 20.9
90% 264 20.9
80% 220 20.9
70% 195 21.0
60% 175 21.0
50% 157 21.0
40% 143 21.0
30% 130 21.0
20% 119 21.1
10% 107 21.1
Active Idle 104 21.1
Line Standard Minimum Temperature (°C) Elevation (m)
208V / 60 Hz / 1 phase / 2 wires 20.9 255
Aggregate Performance Data
Target Load Actual Load ssj_ops
Target Actual
Calibration 1     6,254,502
Calibration 2     6,168,566
Calibration 3     6,154,782
ssj_ops@calibrated=6,161,674
100% 99.8% 6,161,674 6,149,456
90% 90.1% 5,545,507 5,549,000
80% 80.0% 4,929,339 4,931,812
70% 70.1% 4,313,172 4,317,807
60% 60.0% 3,697,004 3,699,349
50% 50.0% 3,080,837 3,079,044
40% 40.1% 2,464,670 2,470,264
30% 30.0% 1,848,502 1,850,129
20% 20.1% 1,232,335 1,236,245
10% 10.0% 616,167 616,123
Active Idle   0 0
Graph of results